Allow overriding FetchContent using CPM (#352 )

* Override FetchContent paramers, fixes #281 * add check to verify that dependency is cached * update test comment * rename test file and class * update test indentation
Add liblava to "Built with CPM.cmake" (#346 )
2025-11-18 15:17:30 -05:00 · 2022-05-16 21:28:44 +02:00 · 2022-04-10 18:59:05 +00:00 · 2022-02-11 19:37:32 +01:00 · 2022-02-09 11:25:26 +00:00 · 2022-02-07 20:21:43 +01:00
75 changed files with 2085 additions and 420 deletions
--- a/.cmake-format
+++ b/.cmake-format
@@ -33,6 +33,8 @@ parse:
        DOWNLOAD_NO_EXTRACT: 1
        HTTP_USERNAME: 1
        HTTP_PASSWORD: 1
+        EXCLUDE_FROM_ALL: 1
+        SOURCE_SUBDIR: 1
        OPTIONS: +
    cpmfindpackage:
      pargs:
--- a/.github/workflows/examples.yml
+++ b/.github/workflows/examples.yml
@@ -0,0 +1,30 @@
+name: Examples
+
+on:
+  push:
+    branches:
+    - master
+  pull_request:
+    branches:
+    - master
+
+jobs:
+  gcc:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: build all
+        env:
+          CC: gcc
+          CXX: g++
+        run: python3 examples/build_all.py
+
+  clang:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: build all
+        env:
+          CC: clang
+          CXX: clang++
+        run: python3 examples/build_all.py
--- a/.github/workflows/macos.yml
+++ b/.github/workflows/macos.yml
@@ -1,22 +0,0 @@
-name: MacOS
-
-on:
-  push:
-    branches:
-      - master
-  pull_request:
-    branches:
-      - master
-
-jobs:
-  build:
-
-    runs-on: macos-latest
-    
-    steps:
-    - uses: actions/checkout@v1
-    
-    - name: run tests
-      run: |
-        cmake -Htest -Bbuild/test
-        cmake --build build/test --target test-verbose
--- a/.github/workflows/style.yml
+++ b/.github/workflows/style.yml
@@ -22,7 +22,7 @@ jobs:
        pip3 install cmake_format==0.6.11 pyyaml

    - name: configure
-      run: cmake -Htest/style -Bbuild/style
+      run: cmake -Stest/style -Bbuild/style

    - name: check style
      run: cmake --build build/style --target check-format
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -0,0 +1,33 @@
+name: Test
+
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+    branches:
+      - master
+
+jobs:
+  tests:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        # windows-latest is windows-2019 which carries a pretty old version of ruby (2.5)
+        # we need at least ruby 2.7 for the tests
+        # instead of dealing with installing a modern version of ruby on 2019, we'll just use windows-2022 here
+        os: [ubuntu-latest, windows-2022, macos-latest]
+
+    steps:
+      - name: clone
+        uses: actions/checkout@v2
+
+      - name: unit tests
+        run: |
+          cmake -Stest -Bbuild/test
+          cmake --build build/test --target test-verbose
+
+      - name: integration tests
+        run: ruby test/integration/runner.rb
+        env:
+          CPM_INTEGRATION_TEST_DIR: ./build/integration
--- a/.github/workflows/ubuntu.yml
+++ b/.github/workflows/ubuntu.yml
@@ -1,29 +0,0 @@
-name: Ubuntu
-
-on:
-  push:
-    branches:
-    - master
-  pull_request:
-    branches:
-    - master
-
-jobs:
-  build:
-
-    runs-on: ubuntu-latest
-    
-    steps:
-    - uses: actions/checkout@v1
-    
-    - name: install updates
-      run: |
-        wget -O cmake.sh https://cmake.org/files/v3.14/cmake-3.14.0-Linux-x86_64.sh 
-        sudo sh cmake.sh --skip-license --exclude-subdir --prefix=/usr/local
-        export PATH=/usr/local/bin:$PATH
-        cmake --version
-    
-    - name: run tests
-      run: |
-        cmake -Htest -Bbuild/test
-        cmake --build build/test --target test-verbose
--- a/.github/workflows/windows.yml
+++ b/.github/workflows/windows.yml
@@ -1,22 +0,0 @@
-name: Windows
-
-on:
-  push:
-    branches:
-    - master
-  pull_request:
-    branches:
-    - master
-
-jobs:
-  build:
-
-    runs-on: windows-latest
-    
-    steps:
-    - uses: actions/checkout@v1
-    
-    - name: run tests
-      run: |
-        cmake -Htest -Bbuild/test
-        cmake --build build/test --target test-verbose
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,50 +0,0 @@
-language: cpp
-sudo: require
-dist: xenial
-
-common_sources: &all_sources
-  - ubuntu-toolchain-r-test
-  - llvm-toolchain-trusty
-
-python:
-  - 3.7
-
-matrix:
-  include:
-    - os: linux
-      compiler: gcc
-      addons: &gcc8
-        apt:
-          sources: *all_sources
-          packages:
-            - g++-8
-      env:
-        - MATRIX_EVAL="export CC=gcc-8; export CXX=g++-8;"
-
-    - os: linux
-      compiler: clang
-      addons:
-        apt:
-          sources: *all_sources
-          packages:
-            - g++-8
-            - clang-6.0
-      env:
-        - MATRIX_EVAL="export CC=clang-6.0; export CXX=clang++-6.0;"
-
-before_install:
-  # Update compilers
-  - eval "${MATRIX_EVAL}"
-  - echo "CC=$CC CXX=$CXX"
-  # Install a supported cmake version (>= 3.14)
-  - wget -O cmake.sh https://cmake.org/files/v3.14/cmake-3.14.0-Linux-x86_64.sh
-  - sudo sh cmake.sh --skip-license --exclude-subdir --prefix=/usr/local
-  - export PATH=/usr/local/bin:$PATH
-  - cmake --version
-
-script:
-  # unit tests
-  - cmake -Htest -Bbuild/test
-  - cmake --build build/test --target test-verbose
-  # build examples
-  - python3 examples/build_all.py
--- a/CONTRIBUTORS.md
+++ b/CONTRIBUTORS.md
@@ -0,0 +1,32 @@
+# CPM.cmake Contributors
+
+For detailed breakdown of individual contributions see the [Contributors page on GitHub](https://github.com/cpm-cmake/CPM.cmake/graphs/contributors)
+
+* [Lars Melchior](https://github.com/TheLartians)
+* [Borislav Stanimirov](https://github.com/iboB)
+* [Paul T](https://github.com/DeveloperPaul123)
+* [Leonardo Lima](https://github.com/leozz37)
+* [pgorgon-hem](https://github.com/pgorgon-hem)
+* [Xavier Muller](https://github.com/xmuller)
+* NVIDIA CORPORATION via [Robert Maynard](https://github.com/robertmaynard)
+* [Kingsley Chen](https://github.com/kingsamchen)
+* [alexandreSalconiDenis](https://github.com/alexandreSalconiDenis)
+* [DNKpp](https://github.com/DNKpp)
+* [Olivier Le Doeuff](https://github.com/OlivierLDff)
+* [Stuart Dootson](https://github.com/studoot)
+* [Tobias Hellmann](https://github.com/Tobi823)
+* [Giuseppe Cesarano](https://github.com/GiuseppeCesarano)
+* [Pavel Sokolov](https://github.com/hacker-cb)
+* [Claus Klein](https://github.com/ClausKlein)
+* [Clare Macrae](https://github.com/claremacrae)
+* [Kai Germaschewski](https://github.com/germasch)
+* [Andrea Barbadoro](https://github.com/andijcr)
+* [MixusMinimax](https://github.com/MixusMinimax)
+* [Dan Raviv](https://github.com/danra)
+* [Prabir Shrestha](https://github.com/prabirshrestha)
+* [Paul Taylor](https://github.com/trxcllnt)
+* [Ryan Mast](https://github.com/nightlark)
+* [Vinpasso](https://github.com/Vinpasso)
+* [Yotam Gingold](https://github.com/yig)
+* [jecassis](https://github.com/jecassis)
+* [Johel Ernesto Guerrero Peña](https://github.com/JohelEGP)
--- a/2
+++ b/2
@@ -1,6 +1,6 @@
 MIT License

-Copyright (c) 2019 Lars Melchior
+Copyright (c) 2019-2022 Lars Melchior and contributors

 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
--- a/README.md
+++ b/README.md
@@ -1,7 +1,3 @@
-[![Build Status](https://travis-ci.com/cpm-cmake/CPM.cmake.svg?branch=master)](https://travis-ci.com/cpm-cmake/CPM.cmake)
-[![Actions Status](https://github.com/cpm-cmake/CPM.cmake/workflows/MacOS/badge.svg)](https://github.com/cpm-cmake/CPM.cmake/actions)
-[![Actions Status](https://github.com/cpm-cmake/CPM.cmake/workflows/Windows/badge.svg)](https://github.com/cpm-cmake/CPM.cmake/actions)
-[![Actions Status](https://github.com/cpm-cmake/CPM.cmake/workflows/Ubuntu/badge.svg)](https://github.com/cpm-cmake/CPM.cmake/actions)

 <br />
 <p align="center">
@@ -11,7 +7,7 @@

 # Setup-free CMake dependency management

-CPM.cmake is a CMake script that adds dependency management capabilities to CMake.
+CPM.cmake is a cross-platform CMake script that adds dependency management capabilities to CMake.
 It's built as a thin wrapper around CMake's [FetchContent](https://cmake.org/cmake/help/latest/module/FetchContent.html) module that adds version control, caching, a simple API [and more](#comparison-to-pure-fetchcontent--externalproject).

 ## Manage everything
@@ -27,9 +23,9 @@ For everything else, the targets can be created manually after the dependency ha

 ## Usage

-After `CPM.cmake` has been [added](#adding-cpm) to your project, the function `CPMAddPackage` or `CPMFindPackage` can be used to fetch and configure a dependency.
+After `CPM.cmake` has been [added](#adding-cpm) to your project, the function `CPMAddPackage` can be used to fetch and configure a dependency.
 Afterwards, any targets defined in the dependency can be used directly.
-`CPMFindPackage` and `CPMAddPackage` take the following named parameters.
+`CPMAddPackage` takes the following named parameters.

 ```cmake
 CPMAddPackage(
@@ -43,18 +39,44 @@ CPMAddPackage(

 The origin may be specified by a `GIT_REPOSITORY`, but other sources, such as direct URLs, are [also supported](https://cmake.org/cmake/help/v3.11/module/ExternalProject.html#external-project-definition).
 If `GIT_TAG` hasn't been explicitly specified it defaults to `v(VERSION)`, a common convention for git projects.
-On the other hand, if `VERSION` hasn't been explicitly specified, CPM can automatically identify the version from the git tag in some common cases. 
-`GIT_TAG` can also be set to a specific commit or a branch name such as `master` to always download the most recent version.
-The optional argument `FIND_PACKAGE_ARGUMENTS` can be specified to a string of parameters that will be passed to `find_package` if enabled (see below).
+On the other hand, if `VERSION` hasn't been explicitly specified, CPM can automatically identify the version from the git tag in some common cases.
+`GIT_TAG` can also be set to a specific commit or a branch name such as `master`, however this isn't recommended, as such packages will only be updated when the cache is cleared.

-After calling `CPMAddPackage` or `CPMFindPackage`, the following variables are defined in the local scope, where `<dependency>` is the name of the dependency.
+If an additional optional parameter `EXCLUDE_FROM_ALL` is set to a truthy value, then any targets defined inside the dependency won't be built by default. See the [CMake docs](https://cmake.org/cmake/help/latest/prop_tgt/EXCLUDE_FROM_ALL.html) for details.
+
+A single-argument compact syntax is also supported:
+
+```cmake
+# A git package from a given uri with a version
+CPMAddPackage("uri@version")
+# A git package from a given uri with a git tag or commit hash
+CPMAddPackage("uri#tag")
+# A git package with both version and tag provided
+CPMAddPackage("uri@version#tag")
+```
+
+In the shorthand syntax if the URI is of the form `gh:user/name`, it is interpreted as GitHub URI and converted to `https://github.com/user/name.git`. If the URI is of the form `gl:user/name`, it is interpreted as a [GitLab](https://gitlab.com/explore/) URI and converted to `https://gitlab.com/user/name.git`. If the URI is of the form `bb:user/name`, it is interpreted as a [Bitbucket](https://bitbucket.org/) URI and converted to `https://bitbucket.org/user/name.git`. Otherwise the URI used verbatim as a git URL. All packages added using the shorthand syntax will be added using the [EXCLUDE_FROM_ALL](https://cmake.org/cmake/help/latest/prop_tgt/EXCLUDE_FROM_ALL.html) flag.
+
+The single-argument syntax also works for URLs:
+
+```cmake
+# An archive package from a given url. The version is inferred
+CPMAddPackage("https://example.com/my-package-1.2.3.zip")
+# An archive package from a given url with an MD5 hash provided
+CPMAddPackage("https://example.com/my-package-1.2.3.zip#MD5=68e20f674a48be38d60e129f600faf7d")
+# An archive package from a given url. The version is explicitly given
+CPMAddPackage("https://example.com/my-package.zip@1.2.3")
+```
+
+After calling `CPMAddPackage`, the following variables are defined in the local scope, where `<dependency>` is the name of the dependency.

 - `<dependency>_SOURCE_DIR` is the path to the source of the dependency.
 - `<dependency>_BINARY_DIR` is the path to the build directory of the dependency.
 - `<dependency>_ADDED` is set to `YES` if the dependency has not been added before, otherwise it is set to `NO`.

-The difference between `CPMFindPackage` and `CPMAddPackage` is that `CPMFindPackage` will try to find a local dependency via CMake's `find_package` and fallback to `CPMAddPackage` if the dependency is not found.
-This behaviour can be also modified globally via [CPM options](#options).
+For using CPM.cmake projects with external package managers, such as conan or vcpkg, setting the variable [`CPM_USE_LOCAL_PACKAGES`](#options) will make CPM.cmake try to add a package through `find_package` first, and add it from source if it doesn't succeed.
+
+In rare cases, this behaviour may be desirable by default. The function `CPMFindPackage` will try to find a local dependency via CMake's `find_package` and fallback to `CPMAddPackage`, if the dependency is not found.

 ## Full CMakeLists Example

@@ -69,12 +91,7 @@ add_executable(tests tests.cpp)

 # add dependencies
 include(cmake/CPM.cmake)
-
-CPMAddPackage(
-  NAME Catch2
-  GITHUB_REPOSITORY catchorg/Catch2
-  VERSION 2.5.0
-)
+CPMAddPackage("gh:catchorg/Catch2@2.5.0")

 # link dependencies
 target_link_libraries(tests Catch2)
@@ -112,7 +129,7 @@ Dependencies using CPM will automatically use the updated script of the outermos
 ## Limitations

 - **No pre-built binaries** For every new build directory, all dependencies are initially downloaded and built from scratch. To avoid extra downloads it is recommend to set the [`CPM_SOURCE_CACHE`](#CPM_SOURCE_CACHE) environmental variable. Using a caching compiler such as [ccache](https://github.com/TheLartians/Ccache.cmake) can drastically reduce build time.
- **Dependent on good CMakeLists** Many libraries do not have CMakeLists that work well for subprojects. Luckily this is slowly changing, however, until then, some manual configuration may be required (see the snippets [below](#snippets) for examples). For best practices on preparing projects for CPM, see the [wiki](https://github.com/cpm-cmake/CPM.cmake/wiki/Preparing-projects-for-CPM.cmake). 
+- **Dependent on good CMakeLists** Many libraries do not have CMakeLists that work well for subprojects. Luckily this is slowly changing, however, until then, some manual configuration may be required (see the snippets [below](#snippets) for examples). For best practices on preparing projects for CPM, see the [wiki](https://github.com/cpm-cmake/CPM.cmake/wiki/Preparing-projects-for-CPM.cmake).
 - **First version used** In diamond-shaped dependency graphs (e.g. `A` depends on `C`@1.1 and `B`, which itself depends on `C`@1.2 the first added dependency will be used (in this case `C`@1.1). In this case, B requires a newer version of `C` than `A`, so CPM will emit a warning. This can be easily resolved by adding a new version of the dependency in the outermost project, or by introducing a [package lock file](#package-lock).

 For projects with more complex needs and where an extra setup step doesn't matter, it may be worth to check out an external C++ package manager such as [vcpkg](https://github.com/microsoft/vcpkg), [conan](https://conan.io) or [hunter](https://github.com/ruslo/hunter).
@@ -135,15 +152,14 @@ CPM.cmake is a wrapper for CMake's FetchContent module and adds a number of feat
 The most notable features are:

 - A simpler to use API
- Version checking: CPM.cmake will check the version number of any added dependency and omit a warning if another dependency requires a more recent version.
- Options: any Options passed to a dependency are stored and compared on later use, so if another dependency tries to add an existing dependency with incompatible options a warning will be emitted to the user.
+- Version checking: CPM.cmake will check the version number of any added dependency and emit a warning if another dependency requires a more recent version.
 - Offline builds: CPM.cmake will override CMake's download and update commands, which allows new builds to be configured while offline if all dependencies [are available locally](#cpm_source_cache).
 - Automatic shallow clone: if a version tag (e.g. `v2.2.0`) is provided and `CPM_SOURCE_CACHE` is used, CPM.cmake will perform a shallow clone of the dependency, which should be significantly faster while using less storage than a full clone.
 - Overridable: all `CPMAddPackage` can be configured to use `find_package` by setting a [CMake flag](#cpm_use_local_packages), making it easy to integrate into projects that may require local versioning through the system's package manager.
 - [Package lock files](#package-lock) for easier transitive dependency management.
 - Dependencies can be overridden [per-build](#local-package-override) using CMake CLI parameters.

-ExternalProject works similarly as FetchContent, however waits with adding dependencies until build time. 
+ExternalProject works similarly as FetchContent, however waits with adding dependencies until build time.
 This has a quite a few disadvantages, especially as it makes using custom toolchains / cross-compiling very difficult and can lead to problems with nested dependencies.

 ## Options
@@ -167,6 +183,7 @@ You can use `CPM_SOURCE_CACHE` on GitHub Actions workflows [cache](https://githu
 If set, CPM will forward all calls to `CPMFindPackage` as `CPMAddPackage`.
 This is useful to create reproducible builds or to determine if the source parameters have all been set correctly.
 This can also be set as an environmental variable.
+This can be controlled on a per package basis with the `CPM_DOWNLOAD_<dependency name>` variable.

 ### CPM_USE_LOCAL_PACKAGES

@@ -174,11 +191,18 @@ CPM can be configured to use `find_package` to search for locally installed depe
 If the option `CPM_LOCAL_PACKAGES_ONLY` is set, CPM will emit an error if the dependency is not found locally.
 These options can also be set as environmental variables.

+In the case that `find_package` requires additional arguments, the parameter `FIND_PACKAGE_ARGUMENTS` may be specified in the `CPMAddPackage` call. The value of this parameter will be forwarded to `find_package`.
+
+### CPM_USE_NAMED_CACHE_DIRECTORIES
+
+If set, CPM use additional directory level in cache to improve readability of packages names in IDEs like CLion. It changes cache structure, so all dependencies are downloaded again. There is no problem to mix both structures in one cache directory but then there may be 2 copies of some dependencies.
+This can also be set as an environmental variable.
+
 ## Local package override

 Library developers are often in the situation where they work on a locally checked out dependency at the same time as on a consumer project.
 It is possible to override the consumer's dependency with the version by supplying the CMake option `CPM_<dependency name>_SOURCE` set to the absolute path of the local library.
-For example, to use the local version of the dependency `Dep` at the path `/path/to/dep`, the consumer can be built with the following command. 
+For example, to use the local version of the dependency `Dep` at the path `/path/to/dep`, the consumer can be built with the following command.

 ```bash
 cmake -Bbuild -DCPM_Dep_SOURCE=/path/to/dep
@@ -205,7 +229,7 @@ See the [wiki](https://github.com/cpm-cmake/CPM.cmake/wiki/Package-lock) for mor

 ## Built with CPM.cmake

-Some amazing projects that are built using the CPM.cmake package manager. 
+Some amazing projects that are built using the CPM.cmake package manager.
 If you know others, feel free to add them here through a PR.

 <table>
@@ -234,6 +258,14 @@ If you know others, feel free to add them here through a PR.
        <p align="center"><b>ModernCppStarter</b></p>
      </a>
    </td>
+    <td>
+      <a href="https://git.io/liblava">
+        <p align="center">
+          <img src="https://github.com/liblava.png" alt="liblava" width="100pt" />
+        </p>
+        <p align="center"><b>liblava - Modern Vulkan library</b></p>
+      </a>
+    </td>
  </tr>
 </table>

@@ -244,51 +276,56 @@ See the [wiki](https://github.com/cpm-cmake/CPM.cmake/wiki/More-Snippets) for mo

 ### [Catch2](https://github.com/catchorg/Catch2)

+```cmake
+CPMAddPackage("gh:catchorg/Catch2@2.5.0")
+```
+
+### [Range-v3](https://github.com/ericniebler/range-v3)
+
+```Cmake
+CPMAddPackage("gh:ericniebler/range-v3#0.11.0")
+```
+
+### [Yaml-cpp](https://github.com/jbeder/yaml-cpp)
+
+```CMake
+# as the tag is in an unusual format, we need to explicitly specify the version
+CPMAddPackage("gh:jbeder/yaml-cpp#yaml-cpp-0.6.3@0.6.3")
+```
+
+### [nlohmann/json](https://github.com/nlohmann/json)
+
 ```cmake
 CPMAddPackage(
-  NAME Catch2
-  GITHUB_REPOSITORY catchorg/Catch2
-  VERSION 2.5.0
+  NAME nlohmann_json
+  VERSION 3.9.1
+  GITHUB_REPOSITORY nlohmann/json
+  OPTIONS 
+    "JSON_BuildTests OFF"
 )
 ```

-### [Boost (via boost-cmake)](https://github.com/Orphis/boost-cmake)
+### [Boost ](https://github.com/boostorg/boost)

 ```CMake
+# boost is a huge project and will take a while to download
+# using `CPM_SOURCE_CACHE` is strongly recommended
 CPMAddPackage(
-  NAME boost-cmake
-  GITHUB_REPOSITORY Orphis/boost-cmake
-  VERSION 1.67.0
+  NAME Boost
+  VERSION 1.77.0
+  GITHUB_REPOSITORY "boostorg/boost"
+  GIT_TAG "boost-1.77.0"
 )
 ```

 ### [cxxopts](https://github.com/jarro2783/cxxopts)

 ```cmake
+# the install option has to be explicitly set to allow installation
 CPMAddPackage(
-  NAME cxxopts
  GITHUB_REPOSITORY jarro2783/cxxopts
-  VERSION 2.2.0
-  OPTIONS
-    "CXXOPTS_BUILD_EXAMPLES Off"
-    "CXXOPTS_BUILD_TESTS Off"
-)
-```
-
-### [Yaml-cpp](https://github.com/jbeder/yaml-cpp)
-
-```CMake
-CPMAddPackage(
-  NAME yaml-cpp
-  GITHUB_REPOSITORY jbeder/yaml-cpp
-  # 0.6.2 uses deprecated CMake syntax
-  VERSION 0.6.3
-  # 0.6.3 is not released yet, so use a recent commit
-  GIT_TAG 012269756149ae99745b6dafefd415843d7420bb 
-  OPTIONS
-    "YAML_CPP_BUILD_TESTS Off"
-    "YAML_CPP_BUILD_CONTRIB Off"
-    "YAML_CPP_BUILD_TOOLS Off"
+  VERSION 2.2.1
+  OPTIONS "CXXOPTS_BUILD_EXAMPLES NO" "CXXOPTS_BUILD_TESTS NO" "CXXOPTS_ENABLE_INSTALL YES"
 )
 ```

@@ -298,48 +335,13 @@ CPMAddPackage(
 CPMAddPackage(
  NAME benchmark
  GITHUB_REPOSITORY google/benchmark
-  VERSION 1.4.1
-  OPTIONS
-    "BENCHMARK_ENABLE_TESTING Off"
+  VERSION 1.5.2
+  OPTIONS "BENCHMARK_ENABLE_TESTING Off"
 )

-if (benchmark_ADDED)
-  # compile with C++17
-  set_target_properties(benchmark PROPERTIES CXX_STANDARD 17)
-endif()
-```
-
-### [nlohmann/json](https://github.com/nlohmann/json)
-
-```cmake
-CPMAddPackage(
-  NAME nlohmann_json
-  VERSION 3.6.1  
-  # the git repo is incredibly large, so we download the archived include directory
-  URL https://github.com/nlohmann/json/releases/download/v3.6.1/include.zip
-  URL_HASH SHA256=69cc88207ce91347ea530b227ff0776db82dcb8de6704e1a3d74f4841bc651cf
-)
-
-if (nlohmann_json_ADDED)
-  add_library(nlohmann_json INTERFACE IMPORTED)
-  target_include_directories(nlohmann_json INTERFACE ${nlohmann_json_SOURCE_DIR})
-endif()
-```
-
-### [Range-v3](https://github.com/ericniebler/range-v3)
-
-```Cmake
-CPMAddPackage(
-  NAME range-v3
-  URL https://github.com/ericniebler/range-v3/archive/0.5.0.zip
-  VERSION 0.5.0
-  # the range-v3 CMakeLists screws with configuration options
-  DOWNLOAD_ONLY True
-)
-
-if(range-v3_ADDED) 
-  add_library(range-v3 INTERFACE IMPORTED)
-  target_include_directories(range-v3 INTERFACE "${range-v3_SOURCE_DIR}/include")
+if(benchmark_ADDED)
+  # enable c++11 to avoid compilation errors
+  set_target_properties(benchmark PROPERTIES CXX_STANDARD 11)
 endif()
 ```

--- a/cmake/CPM.cmake
+++ b/cmake/CPM.cmake
@@ -5,7 +5,7 @@
 # MIT License
 # -----------
 #[[
-  Copyright (c) 2021 Lars Melchior and additional contributors
+  Copyright (c) 2019-2022 Lars Melchior and contributors

  Permission is hereby granted, free of charge, to any person obtaining a copy
  of this software and associated documentation files (the "Software"), to deal
@@ -57,6 +57,13 @@ See https://github.com/cpm-cmake/CPM.cmake for more information."
  endif()
 endif()

+if(CURRENT_CPM_VERSION MATCHES "development-version")
+  message(WARNING "Your project is using an unstable development version of CPM.cmake. \
+Please update to a recent release if possible. \
+See https://github.com/cpm-cmake/CPM.cmake for details."
+  )
+endif()
+
 set_property(GLOBAL PROPERTY CPM_INITIALIZED true)

 option(CPM_USE_LOCAL_PACKAGES "Always try to use `find_package` to get dependencies"
@@ -76,6 +83,10 @@ option(CPM_INCLUDE_ALL_IN_PACKAGE_LOCK
       "Add all packages added through CPM.cmake to the package lock"
       $ENV{CPM_INCLUDE_ALL_IN_PACKAGE_LOCK}
 )
+option(CPM_USE_NAMED_CACHE_DIRECTORIES
+       "Use additional directory of package name in cache on the most nested level."
+       $ENV{CPM_USE_NAMED_CACHE_DIRECTORIES}
+)

 set(CPM_VERSION
    ${CURRENT_CPM_VERSION}
@@ -132,7 +143,64 @@ if(NOT CPM_DONT_CREATE_PACKAGE_LOCK)
 endif()

 include(FetchContent)
-include(CMakeParseArguments)
+
+# Try to infer package name from git repository uri (path or url)
+function(cpm_package_name_from_git_uri URI RESULT)
+  if("${URI}" MATCHES "([^/:]+)/?.git/?$")
+    set(${RESULT}
+        ${CMAKE_MATCH_1}
+        PARENT_SCOPE
+    )
+  else()
+    unset(${RESULT} PARENT_SCOPE)
+  endif()
+endfunction()
+
+# Try to infer package name and version from a url
+function(cpm_package_name_and_ver_from_url url outName outVer)
+  if(url MATCHES "[/\\?]([a-zA-Z0-9_\\.-]+)\\.(tar|tar\\.gz|tar\\.bz2|zip|ZIP)(\\?|/|$)")
+    # We matched an archive
+    set(filename "${CMAKE_MATCH_1}")
+
+    if(filename MATCHES "([a-zA-Z0-9_\\.-]+)[_-]v?(([0-9]+\\.)*[0-9]+[a-zA-Z0-9]*)")
+      # We matched <name>-<version> (ie foo-1.2.3)
+      set(${outName}
+          "${CMAKE_MATCH_1}"
+          PARENT_SCOPE
+      )
+      set(${outVer}
+          "${CMAKE_MATCH_2}"
+          PARENT_SCOPE
+      )
+    elseif(filename MATCHES "(([0-9]+\\.)+[0-9]+[a-zA-Z0-9]*)")
+      # We couldn't find a name, but we found a version
+      #
+      # In many cases (which we don't handle here) the url would look something like
+      # `irrelevant/ACTUAL_PACKAGE_NAME/irrelevant/1.2.3.zip`. In such a case we can't possibly
+      # distinguish the package name from the irrelevant bits. Moreover if we try to match the
+      # package name from the filename, we'd get bogus at best.
+      unset(${outName} PARENT_SCOPE)
+      set(${outVer}
+          "${CMAKE_MATCH_1}"
+          PARENT_SCOPE
+      )
+    else()
+      # Boldly assume that the file name is the package name.
+      #
+      # Yes, something like `irrelevant/ACTUAL_NAME/irrelevant/download.zip` will ruin our day, but
+      # such cases should be quite rare. No popular service does this... we think.
+      set(${outName}
+          "${filename}"
+          PARENT_SCOPE
+      )
+      unset(${outVer} PARENT_SCOPE)
+    endif()
+  else()
+    # No ideas yet what to do with non-archives
+    unset(${outName} PARENT_SCOPE)
+    unset(${outVer} PARENT_SCOPE)
+  endif()
+endfunction()

 # Initialize logging prefix
 if(NOT CPM_INDENT)
@@ -166,7 +234,7 @@ function(cpm_create_module_file Name)
  if(NOT CPM_DONT_UPDATE_MODULE_PATH)
    # erase any previous modules
    file(WRITE ${CPM_MODULE_PATH}/Find${Name}.cmake
-         "include(${CPM_FILE})\n${ARGN}\nset(${Name}_FOUND TRUE)"
+         "include(\"${CPM_FILE}\")\n${ARGN}\nset(${Name}_FOUND TRUE)"
    )
  endif()
 endfunction()
@@ -183,13 +251,19 @@ function(CPMFindPackage)
    endif()
  endif()

-  if(CPM_DOWNLOAD_ALL)
+  set(downloadPackage ${CPM_DOWNLOAD_ALL})
+  if(DEFINED CPM_DOWNLOAD_${CPM_ARGS_NAME})
+    set(downloadPackage ${CPM_DOWNLOAD_${CPM_ARGS_NAME}})
+  elseif(DEFINED ENV{CPM_DOWNLOAD_${CPM_ARGS_NAME}})
+    set(downloadPackage $ENV{CPM_DOWNLOAD_${CPM_ARGS_NAME}})
+  endif()
+  if(downloadPackage)
    CPMAddPackage(${ARGN})
    cpm_export_variables(${CPM_ARGS_NAME})
    return()
  endif()

-  cpm_check_if_package_already_added(${CPM_ARGS_NAME} "${CPM_ARGS_VERSION}" "${CPM_ARGS_OPTIONS}")
+  cpm_check_if_package_already_added(${CPM_ARGS_NAME} "${CPM_ARGS_VERSION}")
  if(CPM_PACKAGE_ALREADY_ADDED)
    cpm_export_variables(${CPM_ARGS_NAME})
    return()
@@ -205,7 +279,7 @@ function(CPMFindPackage)
 endfunction()

 # checks if a package has been added before
-function(cpm_check_if_package_already_added CPM_ARGS_NAME CPM_ARGS_VERSION CPM_ARGS_OPTIONS)
+function(cpm_check_if_package_already_added CPM_ARGS_NAME CPM_ARGS_VERSION)
  if("${CPM_ARGS_NAME}" IN_LIST CPM_PACKAGES)
    CPMGetPackageVersion(${CPM_ARGS_NAME} CPM_PACKAGE_VERSION)
    if("${CPM_PACKAGE_VERSION}" VERSION_LESS "${CPM_ARGS_VERSION}")
@@ -214,17 +288,6 @@ function(cpm_check_if_package_already_added CPM_ARGS_NAME CPM_ARGS_VERSION CPM_A
          "${CPM_INDENT} requires a newer version of ${CPM_ARGS_NAME} (${CPM_ARGS_VERSION}) than currently included (${CPM_PACKAGE_VERSION})."
      )
    endif()
-    if(CPM_ARGS_OPTIONS)
-      foreach(OPTION ${CPM_ARGS_OPTIONS})
-        cpm_parse_option(${OPTION})
-        if(NOT "${${OPTION_KEY}}" STREQUAL "${OPTION_VALUE}")
-          message(
-            WARNING
-              "${CPM_INDENT} ignoring package option for ${CPM_ARGS_NAME}: ${OPTION_KEY} = ${OPTION_VALUE} (${${OPTION_KEY}})"
-          )
-        endif()
-      endforeach()
-    endif()
    cpm_get_fetch_properties(${CPM_ARGS_NAME})
    set(${CPM_ARGS_NAME}_ADDED NO)
    set(CPM_PACKAGE_ALREADY_ADDED
@@ -240,10 +303,186 @@ function(cpm_check_if_package_already_added CPM_ARGS_NAME CPM_ARGS_VERSION CPM_A
  endif()
 endfunction()

+# Parse the argument of CPMAddPackage in case a single one was provided and convert it to a list of
+# arguments which can then be parsed idiomatically. For example gh:foo/bar@1.2.3 will be converted
+# to: GITHUB_REPOSITORY;foo/bar;VERSION;1.2.3
+function(cpm_parse_add_package_single_arg arg outArgs)
+  # Look for a scheme
+  if("${arg}" MATCHES "^([a-zA-Z]+):(.+)$")
+    string(TOLOWER "${CMAKE_MATCH_1}" scheme)
+    set(uri "${CMAKE_MATCH_2}")
+
+    # Check for CPM-specific schemes
+    if(scheme STREQUAL "gh")
+      set(out "GITHUB_REPOSITORY;${uri}")
+      set(packageType "git")
+    elseif(scheme STREQUAL "gl")
+      set(out "GITLAB_REPOSITORY;${uri}")
+      set(packageType "git")
+    elseif(scheme STREQUAL "bb")
+      set(out "BITBUCKET_REPOSITORY;${uri}")
+      set(packageType "git")
+      # A CPM-specific scheme was not found. Looks like this is a generic URL so try to determine
+      # type
+    elseif(arg MATCHES ".git/?(@|#|$)")
+      set(out "GIT_REPOSITORY;${arg}")
+      set(packageType "git")
+    else()
+      # Fall back to a URL
+      set(out "URL;${arg}")
+      set(packageType "archive")
+
+      # We could also check for SVN since FetchContent supports it, but SVN is so rare these days.
+      # We just won't bother with the additional complexity it will induce in this function. SVN is
+      # done by multi-arg
+    endif()
+  else()
+    if(arg MATCHES ".git/?(@|#|$)")
+      set(out "GIT_REPOSITORY;${arg}")
+      set(packageType "git")
+    else()
+      # Give up
+      message(FATAL_ERROR "CPM: Can't determine package type of '${arg}'")
+    endif()
+  endif()
+
+  # For all packages we interpret @... as version. Only replace the last occurrence. Thus URIs
+  # containing '@' can be used
+  string(REGEX REPLACE "@([^@]+)$" ";VERSION;\\1" out "${out}")
+
+  # Parse the rest according to package type
+  if(packageType STREQUAL "git")
+    # For git repos we interpret #... as a tag or branch or commit hash
+    string(REGEX REPLACE "#([^#]+)$" ";GIT_TAG;\\1" out "${out}")
+  elseif(packageType STREQUAL "archive")
+    # For archives we interpret #... as a URL hash.
+    string(REGEX REPLACE "#([^#]+)$" ";URL_HASH;\\1" out "${out}")
+    # We don't try to parse the version if it's not provided explicitly. cpm_get_version_from_url
+    # should do this at a later point
+  else()
+    # We should never get here. This is an assertion and hitting it means there's a bug in the code
+    # above. A packageType was set, but not handled by this if-else.
+    message(FATAL_ERROR "CPM: Unsupported package type '${packageType}' of '${arg}'")
+  endif()
+
+  set(${outArgs}
+      ${out}
+      PARENT_SCOPE
+  )
+endfunction()
+
+# Check that the working directory for a git repo is clean
+function(cpm_check_git_working_dir_is_clean repoPath gitTag isClean)
+
+  find_package(Git REQUIRED)
+
+  if(NOT GIT_EXECUTABLE)
+    # No git executable, assume directory is clean
+    set(${isClean}
+        TRUE
+        PARENT_SCOPE
+    )
+    return()
+  endif()
+
+  # check for uncommitted changes
+  execute_process(
+    COMMAND ${GIT_EXECUTABLE} status --porcelain
+    RESULT_VARIABLE resultGitStatus
+    OUTPUT_VARIABLE repoStatus
+    OUTPUT_STRIP_TRAILING_WHITESPACE ERROR_QUIET
+    WORKING_DIRECTORY ${repoPath}
+  )
+  if(resultGitStatus)
+    # not supposed to happen, assume clean anyway
+    message(WARNING "Calling git status on folder ${repoPath} failed")
+    set(${isClean}
+        TRUE
+        PARENT_SCOPE
+    )
+    return()
+  endif()
+
+  if(NOT "${repoStatus}" STREQUAL "")
+    set(${isClean}
+        FALSE
+        PARENT_SCOPE
+    )
+    return()
+  endif()
+
+  # check for committed changes
+  execute_process(
+    COMMAND ${GIT_EXECUTABLE} diff -s --exit-code ${gitTag}
+    RESULT_VARIABLE resultGitDiff
+    OUTPUT_STRIP_TRAILING_WHITESPACE OUTPUT_QUIET
+    WORKING_DIRECTORY ${repoPath}
+  )
+
+  if(${resultGitDiff} EQUAL 0)
+    set(${isClean}
+        TRUE
+        PARENT_SCOPE
+    )
+  else()
+    set(${isClean}
+        FALSE
+        PARENT_SCOPE
+    )
+  endif()
+
+endfunction()
+
+# method to overwrite internal FetchContent properties, to allow using CPM.cmake to overload
+# FetchContent calls. As these are internal cmake properties, this method should be used carefully
+# and may need modification in future CMake versions. Source:
+# https://github.com/Kitware/CMake/blob/dc3d0b5a0a7d26d43d6cfeb511e224533b5d188f/Modules/FetchContent.cmake#L1152
+function(cpm_override_fetchcontent contentName)
+  cmake_parse_arguments(PARSE_ARGV 1 arg "" "SOURCE_DIR;BINARY_DIR" "")
+  if(NOT "${arg_UNPARSED_ARGUMENTS}" STREQUAL "")
+    message(FATAL_ERROR "Unsupported arguments: ${arg_UNPARSED_ARGUMENTS}")
+  endif()
+
+  string(TOLOWER ${contentName} contentNameLower)
+  set(prefix "_FetchContent_${contentNameLower}")
+
+  set(propertyName "${prefix}_sourceDir")
+  define_property(
+    GLOBAL
+    PROPERTY ${propertyName}
+    BRIEF_DOCS "Internal implementation detail of FetchContent_Populate()"
+    FULL_DOCS "Details used by FetchContent_Populate() for ${contentName}"
+  )
+  set_property(GLOBAL PROPERTY ${propertyName} "${arg_SOURCE_DIR}")
+
+  set(propertyName "${prefix}_binaryDir")
+  define_property(
+    GLOBAL
+    PROPERTY ${propertyName}
+    BRIEF_DOCS "Internal implementation detail of FetchContent_Populate()"
+    FULL_DOCS "Details used by FetchContent_Populate() for ${contentName}"
+  )
+  set_property(GLOBAL PROPERTY ${propertyName} "${arg_BINARY_DIR}")
+
+  set(propertyName "${prefix}_populated")
+  define_property(
+    GLOBAL
+    PROPERTY ${propertyName}
+    BRIEF_DOCS "Internal implementation detail of FetchContent_Populate()"
+    FULL_DOCS "Details used by FetchContent_Populate() for ${contentName}"
+  )
+  set_property(GLOBAL PROPERTY ${propertyName} TRUE)
+endfunction()
+
 # Download and add a package from source
 function(CPMAddPackage)
+  list(LENGTH ARGN argnLength)
+  if(argnLength EQUAL 1)
+    cpm_parse_add_package_single_arg("${ARGN}" ARGN)

-  set(flagArgs EXCLUDE_FROM_ALL)
+    # The shorthand syntax implies EXCLUDE_FROM_ALL
+    set(ARGN "${ARGN};EXCLUDE_FROM_ALL;YES")
+  endif()

  set(oneValueArgs
      NAME
@@ -253,17 +492,20 @@ function(CPMAddPackage)
      DOWNLOAD_ONLY
      GITHUB_REPOSITORY
      GITLAB_REPOSITORY
+      BITBUCKET_REPOSITORY
      GIT_REPOSITORY
      SOURCE_DIR
      DOWNLOAD_COMMAND
      FIND_PACKAGE_ARGUMENTS
      NO_CACHE
      GIT_SHALLOW
+      EXCLUDE_FROM_ALL
+      SOURCE_SUBDIR
  )

-  set(multiValueArgs OPTIONS)
+  set(multiValueArgs URL OPTIONS)

-  cmake_parse_arguments(CPM_ARGS "${flagArgs}" "${oneValueArgs}" "${multiValueArgs}" "${ARGN}")
+  cmake_parse_arguments(CPM_ARGS "" "${oneValueArgs}" "${multiValueArgs}" "${ARGN}")

  # Set default values for arguments

@@ -281,10 +523,10 @@ function(CPMAddPackage)

  if(DEFINED CPM_ARGS_GITHUB_REPOSITORY)
    set(CPM_ARGS_GIT_REPOSITORY "https://github.com/${CPM_ARGS_GITHUB_REPOSITORY}.git")
-  endif()
-
-  if(DEFINED CPM_ARGS_GITLAB_REPOSITORY)
+  elseif(DEFINED CPM_ARGS_GITLAB_REPOSITORY)
    set(CPM_ARGS_GIT_REPOSITORY "https://gitlab.com/${CPM_ARGS_GITLAB_REPOSITORY}.git")
+  elseif(DEFINED CPM_ARGS_BITBUCKET_REPOSITORY)
+    set(CPM_ARGS_GIT_REPOSITORY "https://bitbucket.org/${CPM_ARGS_BITBUCKET_REPOSITORY}.git")
  endif()

  if(DEFINED CPM_ARGS_GIT_REPOSITORY)
@@ -292,6 +534,11 @@ function(CPMAddPackage)
    if(NOT DEFINED CPM_ARGS_GIT_TAG)
      set(CPM_ARGS_GIT_TAG v${CPM_ARGS_VERSION})
    endif()
+
+    # If a name wasn't provided, try to infer it from the git repo
+    if(NOT DEFINED CPM_ARGS_NAME)
+      cpm_package_name_from_git_uri(${CPM_ARGS_GIT_REPOSITORY} CPM_ARGS_NAME)
+    endif()
  endif()

  set(CPM_SKIP_FETCH FALSE)
@@ -304,8 +551,35 @@ function(CPMAddPackage)
    endif()
  endif()

+  if(DEFINED CPM_ARGS_URL)
+    # If a name or version aren't provided, try to infer them from the URL
+    list(GET CPM_ARGS_URL 0 firstUrl)
+    cpm_package_name_and_ver_from_url(${firstUrl} nameFromUrl verFromUrl)
+    # If we fail to obtain name and version from the first URL, we could try other URLs if any.
+    # However multiple URLs are expected to be quite rare, so for now we won't bother.
+
+    # If the caller provided their own name and version, they trump the inferred ones.
+    if(NOT DEFINED CPM_ARGS_NAME)
+      set(CPM_ARGS_NAME ${nameFromUrl})
+    endif()
+    if(NOT DEFINED CPM_ARGS_VERSION)
+      set(CPM_ARGS_VERSION ${verFromUrl})
+    endif()
+
+    list(APPEND CPM_ARGS_UNPARSED_ARGUMENTS URL "${CPM_ARGS_URL}")
+  endif()
+
+  # Check for required arguments
+
+  if(NOT DEFINED CPM_ARGS_NAME)
+    message(
+      FATAL_ERROR
+        "CPM: 'NAME' was not provided and couldn't be automatically inferred for package added with arguments: '${ARGN}'"
+    )
+  endif()
+
  # Check if package has been added before
-  cpm_check_if_package_already_added(${CPM_ARGS_NAME} "${CPM_ARGS_VERSION}" "${CPM_ARGS_OPTIONS}")
+  cpm_check_if_package_already_added(${CPM_ARGS_NAME} "${CPM_ARGS_VERSION}")
  if(CPM_PACKAGE_ALREADY_ADDED)
    cpm_export_variables(${CPM_ARGS_NAME})
    return()
@@ -316,10 +590,13 @@ function(CPMAddPackage)
    set(PACKAGE_SOURCE ${CPM_${CPM_ARGS_NAME}_SOURCE})
    set(CPM_${CPM_ARGS_NAME}_SOURCE "")
    CPMAddPackage(
-      NAME ${CPM_ARGS_NAME}
-      SOURCE_DIR ${PACKAGE_SOURCE}
+      NAME "${CPM_ARGS_NAME}"
+      SOURCE_DIR "${PACKAGE_SOURCE}"
+      EXCLUDE_FROM_ALL "${CPM_ARGS_EXCLUDE_FROM_ALL}"
+      OPTIONS "${CPM_ARGS_OPTIONS}"
+      SOURCE_SUBDIR "${CPM_ARGS_SOURCE_SUBDIR}"
+      DOWNLOAD_ONLY "${DOWNLOAD_ONLY}"
      FORCE True
-      OPTIONS ${CPM_ARGS_OPTIONS}
    )
    cpm_export_variables(${CPM_ARGS_NAME})
    return()
@@ -332,7 +609,7 @@ function(CPMAddPackage)
    CPMAddPackage(${declaration})
    cpm_export_variables(${CPM_ARGS_NAME})
    # checking again to ensure version and option compatibility
-    cpm_check_if_package_already_added(${CPM_ARGS_NAME} "${CPM_ARGS_VERSION}" "${CPM_ARGS_OPTIONS}")
+    cpm_check_if_package_already_added(${CPM_ARGS_NAME} "${CPM_ARGS_VERSION}")
    return()
  endif()

@@ -354,16 +631,6 @@ function(CPMAddPackage)

  CPMRegisterPackage("${CPM_ARGS_NAME}" "${CPM_ARGS_VERSION}")

-  if(CPM_ARGS_OPTIONS)
-    foreach(OPTION ${CPM_ARGS_OPTIONS})
-      cpm_parse_option(${OPTION})
-      set(${OPTION_KEY}
-          ${OPTION_VALUE}
-          CACHE INTERNAL ""
-      )
-    endforeach()
-  endif()
-
  if(DEFINED CPM_ARGS_GIT_TAG)
    set(PACKAGE_INFO "${CPM_ARGS_GIT_TAG}")
  elseif(DEFINED CPM_ARGS_SOURCE_DIR)
@@ -372,6 +639,13 @@ function(CPMAddPackage)
    set(PACKAGE_INFO "${CPM_ARGS_VERSION}")
  endif()

+  if(DEFINED FETCHCONTENT_BASE_DIR)
+    # respect user's FETCHCONTENT_BASE_DIR if set
+    set(CPM_FETCHCONTENT_BASE_DIR ${FETCHCONTENT_BASE_DIR})
+  else()
+    set(CPM_FETCHCONTENT_BASE_DIR ${CMAKE_BINARY_DIR}/_deps)
+  endif()
+
  if(DEFINED CPM_ARGS_DOWNLOAD_COMMAND)
    list(APPEND CPM_ARGS_UNPARSED_ARGUMENTS DOWNLOAD_COMMAND ${CPM_ARGS_DOWNLOAD_COMMAND})
  elseif(DEFINED CPM_ARGS_SOURCE_DIR)
@@ -380,21 +654,46 @@ function(CPMAddPackage)
    string(TOLOWER ${CPM_ARGS_NAME} lower_case_name)
    set(origin_parameters ${CPM_ARGS_UNPARSED_ARGUMENTS})
    list(SORT origin_parameters)
-    string(SHA1 origin_hash "${origin_parameters}")
-    set(download_directory ${CPM_SOURCE_CACHE}/${lower_case_name}/${origin_hash})
+    if(CPM_USE_NAMED_CACHE_DIRECTORIES)
+      string(SHA1 origin_hash "${origin_parameters};NEW_CACHE_STRUCTURE_TAG")
+      set(download_directory ${CPM_SOURCE_CACHE}/${lower_case_name}/${origin_hash}/${CPM_ARGS_NAME})
+    else()
+      string(SHA1 origin_hash "${origin_parameters}")
+      set(download_directory ${CPM_SOURCE_CACHE}/${lower_case_name}/${origin_hash})
+    endif()
+    # Expand `download_directory` relative path. This is important because EXISTS doesn't work for
+    # relative paths.
+    get_filename_component(download_directory ${download_directory} ABSOLUTE)
    list(APPEND CPM_ARGS_UNPARSED_ARGUMENTS SOURCE_DIR ${download_directory})
    if(EXISTS ${download_directory})
-      # avoid FetchContent modules to improve performance
-      set(${CPM_ARGS_NAME}_BINARY_DIR ${CMAKE_BINARY_DIR}/_deps/${lower_case_name}-build)
-      set(${CPM_ARGS_NAME}_ADDED YES)
-      set(${CPM_ARGS_NAME}_SOURCE_DIR ${download_directory})
-      if(NOT CPM_ARGS_DOWNLOAD_ONLY AND EXISTS ${download_directory}/CMakeLists.txt)
-        cpm_add_subdirectory(
-          ${download_directory} ${${CPM_ARGS_NAME}_BINARY_DIR} "${CPM_ARGS_EXCLUDE_FROM_ALL}"
-        )
+      cpm_store_fetch_properties(
+        ${CPM_ARGS_NAME} "${download_directory}"
+        "${CPM_FETCHCONTENT_BASE_DIR}/${lower_case_name}-build"
+      )
+      cpm_get_fetch_properties("${CPM_ARGS_NAME}")
+
+      if(DEFINED CPM_ARGS_GIT_TAG)
+        # warn if cache has been changed since checkout
+        cpm_check_git_working_dir_is_clean(${download_directory} ${CPM_ARGS_GIT_TAG} IS_CLEAN)
+        if(NOT ${IS_CLEAN})
+          message(WARNING "Cache for ${CPM_ARGS_NAME} (${download_directory}) is dirty")
+        endif()
      endif()
-      set(CPM_SKIP_FETCH TRUE)
+
+      cpm_add_subdirectory(
+        "${CPM_ARGS_NAME}" "${DOWNLOAD_ONLY}"
+        "${${CPM_ARGS_NAME}_SOURCE_DIR}/${CPM_ARGS_SOURCE_SUBDIR}" "${${CPM_ARGS_NAME}_BINARY_DIR}"
+        "${CPM_ARGS_EXCLUDE_FROM_ALL}" "${CPM_ARGS_OPTIONS}"
+      )
      set(PACKAGE_INFO "${PACKAGE_INFO} at ${download_directory}")
+
+      # As the source dir is already cached/populated, we override the call to FetchContent.
+      set(CPM_SKIP_FETCH TRUE)
+      cpm_override_fetchcontent(
+        "${lower_case_name}" SOURCE_DIR "${${CPM_ARGS_NAME}_SOURCE_DIR}/${CPM_ARGS_SOURCE_SUBDIR}"
+        BINARY_DIR "${${CPM_ARGS_NAME}_BINARY_DIR}"
+      )
+
    else()
      # Enable shallow clone when GIT_TAG is not a commit hash. Our guess may not be accurate, but
      # it should guarantee no commit hash get mis-detected.
@@ -406,12 +705,12 @@ function(CPMAddPackage)
      endif()

      # remove timestamps so CMake will re-download the dependency
-      file(REMOVE_RECURSE ${CMAKE_BINARY_DIR}/_deps/${lower_case_name}-subbuild)
+      file(REMOVE_RECURSE ${CPM_FETCHCONTENT_BASE_DIR}/${lower_case_name}-subbuild)
      set(PACKAGE_INFO "${PACKAGE_INFO} to ${download_directory}")
    endif()
  endif()

-  cpm_create_module_file(${CPM_ARGS_NAME} "CPMAddPackage(${ARGN})")
+  cpm_create_module_file(${CPM_ARGS_NAME} "CPMAddPackage(\"${ARGN}\")")

  if(CPM_PACKAGE_LOCK_ENABLED)
    if((CPM_ARGS_VERSION AND NOT CPM_ARGS_SOURCE_DIR) OR CPM_INCLUDE_ALL_IN_PACKAGE_LOCK)
@@ -431,7 +730,14 @@ function(CPMAddPackage)
    cpm_declare_fetch(
      "${CPM_ARGS_NAME}" "${CPM_ARGS_VERSION}" "${PACKAGE_INFO}" "${CPM_ARGS_UNPARSED_ARGUMENTS}"
    )
-    cpm_fetch_package("${CPM_ARGS_NAME}" "${DOWNLOAD_ONLY}" "${CPM_ARGS_EXCLUDE_FROM_ALL}")
+    cpm_fetch_package("${CPM_ARGS_NAME}" populated)
+    if(${populated})
+      cpm_add_subdirectory(
+        "${CPM_ARGS_NAME}" "${DOWNLOAD_ONLY}"
+        "${${CPM_ARGS_NAME}_SOURCE_DIR}/${CPM_ARGS_SOURCE_SUBDIR}" "${${CPM_ARGS_NAME}_BINARY_DIR}"
+        "${CPM_ARGS_EXCLUDE_FROM_ALL}" "${CPM_ARGS_OPTIONS}"
+      )
+    endif()
    cpm_get_fetch_properties("${CPM_ARGS_NAME}")
  endif()

@@ -465,7 +771,7 @@ macro(cpm_export_variables name)
 endmacro()

 # declares a package, so that any call to CPMAddPackage for the package name will use these
-# arguments instead. Previous declarations will not be overriden.
+# arguments instead. Previous declarations will not be overridden.
 macro(CPMDeclarePackage Name)
  if(NOT DEFINED "CPM_DECLARATION_${Name}")
    set("CPM_DECLARATION_${Name}" "${ARGN}")
@@ -488,7 +794,7 @@ function(cpm_add_comment_to_package_lock Name)
  endif()
 endfunction()

-# includes the package lock file if it exists and creates a target `cpm-write-package-lock` to
+# includes the package lock file if it exists and creates a target `cpm-update-package-lock` to
 # update it
 macro(CPMUsePackageLock file)
  if(NOT CPM_DONT_CREATE_PACKAGE_LOCK)
@@ -542,61 +848,120 @@ function(cpm_get_fetch_properties PACKAGE)
  if(${CPM_DRY_RUN})
    return()
  endif()
-  FetchContent_GetProperties(${PACKAGE})
-  string(TOLOWER ${PACKAGE} lpackage)
+
  set(${PACKAGE}_SOURCE_DIR
-      "${${lpackage}_SOURCE_DIR}"
+      "${CPM_PACKAGE_${PACKAGE}_SOURCE_DIR}"
      PARENT_SCOPE
  )
  set(${PACKAGE}_BINARY_DIR
-      "${${lpackage}_BINARY_DIR}"
+      "${CPM_PACKAGE_${PACKAGE}_BINARY_DIR}"
      PARENT_SCOPE
  )
 endfunction()

-function(cpm_add_subdirectory SOURCE_DIR BINARY_DIR EXCLUDE)
-  if(EXCLUDE)
-    set(addSubdirectoryExtraArgs EXCLUDE_FROM_ALL)
-  else()
-    set(addSubdirectoryExtraArgs "")
+function(cpm_store_fetch_properties PACKAGE source_dir binary_dir)
+  if(${CPM_DRY_RUN})
+    return()
  endif()
-  add_subdirectory(${SOURCE_DIR} ${BINARY_DIR} ${addSubdirectoryExtraArgs})
+
+  set(CPM_PACKAGE_${PACKAGE}_SOURCE_DIR
+      "${source_dir}"
+      CACHE INTERNAL ""
+  )
+  set(CPM_PACKAGE_${PACKAGE}_BINARY_DIR
+      "${binary_dir}"
+      CACHE INTERNAL ""
+  )
 endfunction()

-# downloads a previously declared package via FetchContent
-function(cpm_fetch_package PACKAGE DOWNLOAD_ONLY EXCLUDE)
+# adds a package as a subdirectory if viable, according to provided options
+function(
+  cpm_add_subdirectory
+  PACKAGE
+  DOWNLOAD_ONLY
+  SOURCE_DIR
+  BINARY_DIR
+  EXCLUDE
+  OPTIONS
+)
+  if(NOT DOWNLOAD_ONLY AND EXISTS ${SOURCE_DIR}/CMakeLists.txt)
+    if(EXCLUDE)
+      set(addSubdirectoryExtraArgs EXCLUDE_FROM_ALL)
+    else()
+      set(addSubdirectoryExtraArgs "")
+    endif()
+    if(OPTIONS)
+      # the policy allows us to change options without caching
+      cmake_policy(SET CMP0077 NEW)
+      set(CMAKE_POLICY_DEFAULT_CMP0077 NEW)
+
+      # the policy allows us to change set(CACHE) without caching
+      if(POLICY CMP0126)
+        cmake_policy(SET CMP0126 NEW)
+        set(CMAKE_POLICY_DEFAULT_CMP0126 NEW)
+      endif()
+
+      foreach(OPTION ${OPTIONS})
+        cpm_parse_option("${OPTION}")
+        set(${OPTION_KEY} "${OPTION_VALUE}")
+      endforeach()
+    endif()
+    set(CPM_OLD_INDENT "${CPM_INDENT}")
+    set(CPM_INDENT "${CPM_INDENT} ${PACKAGE}:")
+    add_subdirectory(${SOURCE_DIR} ${BINARY_DIR} ${addSubdirectoryExtraArgs})
+    set(CPM_INDENT "${CPM_OLD_INDENT}")
+  endif()
+endfunction()
+
+# downloads a previously declared package via FetchContent and exports the variables
+# `${PACKAGE}_SOURCE_DIR` and `${PACKAGE}_BINARY_DIR` to the parent scope
+function(cpm_fetch_package PACKAGE populated)
+  set(${populated}
+      FALSE
+      PARENT_SCOPE
+  )
  if(${CPM_DRY_RUN})
    message(STATUS "${CPM_INDENT} package ${PACKAGE} not fetched (dry run)")
    return()
  endif()

  FetchContent_GetProperties(${PACKAGE})
+
  string(TOLOWER "${PACKAGE}" lower_case_name)

  if(NOT ${lower_case_name}_POPULATED)
    FetchContent_Populate(${PACKAGE})
-    if(NOT DOWNLOAD_ONLY AND EXISTS ${${lower_case_name}_SOURCE_DIR}/CMakeLists.txt)
-      set(CPM_OLD_INDENT "${CPM_INDENT}")
-      set(CPM_INDENT "${CPM_INDENT} ${PACKAGE}:")
-      cpm_add_subdirectory(
-        ${${lower_case_name}_SOURCE_DIR} ${${lower_case_name}_BINARY_DIR} ${EXCLUDE}
-      )
-      set(CPM_INDENT "${CPM_OLD_INDENT}")
-    endif()
+    set(${populated}
+        TRUE
+        PARENT_SCOPE
+    )
  endif()
+
+  cpm_store_fetch_properties(
+    ${CPM_ARGS_NAME} ${${lower_case_name}_SOURCE_DIR} ${${lower_case_name}_BINARY_DIR}
+  )
+
+  set(${PACKAGE}_SOURCE_DIR
+      ${${lower_case_name}_SOURCE_DIR}
+      PARENT_SCOPE
+  )
+  set(${PACKAGE}_BINARY_DIR
+      ${${lower_case_name}_BINARY_DIR}
+      PARENT_SCOPE
+  )
 endfunction()

 # splits a package option
 function(cpm_parse_option OPTION)
-  string(REGEX MATCH "^[^ ]+" OPTION_KEY ${OPTION})
-  string(LENGTH ${OPTION} OPTION_LENGTH)
-  string(LENGTH ${OPTION_KEY} OPTION_KEY_LENGTH)
+  string(REGEX MATCH "^[^ ]+" OPTION_KEY "${OPTION}")
+  string(LENGTH "${OPTION}" OPTION_LENGTH)
+  string(LENGTH "${OPTION_KEY}" OPTION_KEY_LENGTH)
  if(OPTION_KEY_LENGTH STREQUAL OPTION_LENGTH)
    # no value for key provided, assume user wants to set option to "ON"
    set(OPTION_VALUE "ON")
  else()
    math(EXPR OPTION_KEY_LENGTH "${OPTION_KEY_LENGTH}+1")
-    string(SUBSTRING ${OPTION} "${OPTION_KEY_LENGTH}" "-1" OPTION_VALUE)
+    string(SUBSTRING "${OPTION}" "${OPTION_KEY_LENGTH}" "-1" OPTION_VALUE)
  endif()
  set(OPTION_KEY
      "${OPTION_KEY}"
@@ -626,7 +991,7 @@ function(cpm_get_version_from_git_tag GIT_TAG RESULT)
  endif()
 endfunction()

-# guesses if the git tag is a commit hash or an actual tag or a branch nane.
+# guesses if the git tag is a commit hash or an actual tag or a branch name.
 function(cpm_is_git_tag_commit_hash GIT_TAG RESULT)
  string(LENGTH "${GIT_TAG}" length)
  # full hash has 40 characters, and short hash has at least 7 characters.
--- a/cmake/testing.cmake
+++ b/cmake/testing.cmake
@@ -3,13 +3,25 @@ function(ASSERT_EQUAL)
    message(FATAL_ERROR "assertion failed: invalid argument count: ${ARGC}")
  endif()

-  if(NOT ${ARGV0} STREQUAL ${ARGV1})
+  if(NOT "${ARGV0}" STREQUAL "${ARGV1}")
    message(FATAL_ERROR "assertion failed: '${ARGV0}' != '${ARGV1}'")
  else()
    message(STATUS "test passed: '${ARGV0}' == '${ARGV1}'")
  endif()
 endfunction()

+function(ASSERT_NOT_EQUAL)
+  if(NOT ARGC EQUAL 2)
+    message(FATAL_ERROR "assertion failed: invalid argument count: ${ARGC}")
+  endif()
+
+  if("${ARGV0}" STREQUAL "${ARGV1}")
+    message(FATAL_ERROR "assertion failed: '${ARGV0}' == '${ARGV1}'")
+  else()
+    message(STATUS "test passed: '${ARGV0}' != '${ARGV1}'")
+  endif()
+endfunction()
+
 function(ASSERT_EMPTY)
  if(NOT ARGC EQUAL 0)
    message(FATAL_ERROR "assertion failed: input ${ARGC} not empty: '${ARGV}'")
@@ -24,11 +36,27 @@ function(ASSERT_DEFINED KEY)
  endif()
 endfunction()

+function(ASSERT_NOT_DEFINED KEY)
+  if(DEFINED ${KEY})
+    message(FATAL_ERROR "assertion failed: '${KEY}' is defiend (${${KEY}})")
+  else()
+    message(STATUS "test passed: '${KEY}' is not defined")
+  endif()
+endfunction()
+
 function(ASSERT_TRUTHY KEY)
  if(${${KEY}})
    message(STATUS "test passed: '${KEY}' is set truthy")
  else()
-    message(FATAL_ERROR "assertion failed: value of '${KEY}' is not true (${${KEY}})")
+    message(FATAL_ERROR "assertion failed: value of '${KEY}' is not truthy (${${KEY}})")
+  endif()
+endfunction()
+
+function(ASSERT_FALSY KEY)
+  if(${${KEY}})
+    message(FATAL_ERROR "assertion failed: value of '${KEY}' is not falsy (${${KEY}})")
+  else()
+    message(STATUS "test passed: '${KEY}' is set falsy")
  endif()
 endfunction()

--- a/examples/TestingFramework/CMakeLists.txt
+++ b/examples/TestingFramework/CMakeLists.txt
@@ -0,0 +1,7 @@
+cmake_minimum_required(VERSION 3.14 FATAL_ERROR)
+
+project(CPMTestingFrameworkExample)
+
+include(../../cmake/CPM.cmake)
+CPMAddPackage("bb:HEMRND/TestingFramework@0.4.1")
+add_test_suites(TESTS SomeTest)
--- a/examples/TestingFramework/SomeTest.cpp
+++ b/examples/TestingFramework/SomeTest.cpp
@@ -0,0 +1,19 @@
+#include <HEM/TestingFramework.hpp>
+
+using namespace fakeit;
+
+class ITest {
+public:
+  virtual int getInt() = 0;
+};
+
+TEST_CASE("Testing Framework Test") {
+  constexpr int someIntValue = 123456;
+
+  Mock<ITest> testMock;
+  When(Method(testMock, getInt)).Return(someIntValue);
+
+  int readValue = testMock.get().getInt();
+
+  REQUIRE(readValue == someIntValue);
+}
--- a/examples/asio-standalone/CMakeLists.txt
+++ b/examples/asio-standalone/CMakeLists.txt
@@ -8,12 +8,7 @@ include(../../cmake/CPM.cmake)

 find_package(Threads REQUIRED)

-CPMAddPackage(
-  NAME asio
-  VERSION 1.18.1
-  GITHUB_REPOSITORY chriskohlhoff/asio
-  GIT_TAG asio-1-18-1 # asio uses non-standard version tag, we must specify GIT_TAG
-)
+CPMAddPackage("gh:chriskohlhoff/asio#asio-1-18-1@1.18.1")

 # ASIO doesn't use CMake, we have to configure it manually. Extra notes for using on Windows:
 #
--- a/examples/benchmark/CMakeLists.txt
+++ b/examples/benchmark/CMakeLists.txt
@@ -6,11 +6,7 @@ project(CPMExampleBenchmark)

 include(../../cmake/CPM.cmake)

-CPMAddPackage(
-  NAME fibonacci
-  GITLAB_REPOSITORY TheLartians/Fibonacci
-  VERSION 2.0
-)
+CPMAddPackage("gh:cpm-cmake/testpack-fibonacci@2.0")

 CPMAddPackage(
  NAME benchmark
@@ -20,7 +16,7 @@ CPMAddPackage(
 )

 if(benchmark_ADDED)
-  # Don't use C++14 because it doesn't work in some configurations.
+  # enable c++11 to avoid compilation errors
  set_target_properties(benchmark PROPERTIES CXX_STANDARD 11)
 endif()

--- a/examples/boost/CMakeLists.txt
+++ b/examples/boost/CMakeLists.txt
@@ -11,13 +11,11 @@ target_compile_features(CPMExampleBoost PRIVATE cxx_std_17)

 include(../../cmake/CPM.cmake)

-CPMFindPackage(
+CPMAddPackage(
  NAME Boost
-  GITHUB_REPOSITORY Orphis/boost-cmake
-  VERSION 1.67.0
-  FIND_PACKAGE_ARGUMENTS "COMPONENTS system"
+  VERSION 1.77.0
+  GITHUB_REPOSITORY "boostorg/boost"
+  GIT_TAG "boost-1.77.0"
 )

-find_package(Threads REQUIRED)
-
-target_link_libraries(CPMExampleBoost PRIVATE Boost::system Threads::Threads)
+target_link_libraries(CPMExampleBoost PRIVATE Boost::asio)
--- a/examples/build_all.py
+++ b/examples/build_all.py
@@ -26,7 +26,7 @@ for example in examples:
  print("running example %s" % example.name)
  print("================" + ('=' * len(example.name)))
  project = Path(".") / 'build' / example.name
-  configure = runCommand('cmake -H%s -B%s' % (example, project))
+  configure = runCommand('cmake -S%s -B%s' % (example, project))
  print('  ' + '\n  '.join([line for line in configure.split('\n') if 'CPM:' in line]))
  build = runCommand('cmake --build %s -- -j%i' % (project, os.cpu_count() / 2))
  print('  ' + '\n  '.join([line for line in build.split('\n') if 'Built target' in line]))
--- a/examples/catch2/CMakeLists.txt
+++ b/examples/catch2/CMakeLists.txt
@@ -6,17 +6,8 @@ project(CPMExampleCatch2)

 include(../../cmake/CPM.cmake)

-CPMAddPackage(
-  NAME fibonacci
-  GITHUB_REPOSITORY TheLartians/Fibonacci
-  VERSION 2.0
-)
-
-CPMAddPackage(
-  NAME Catch2
-  GITHUB_REPOSITORY catchorg/Catch2
-  VERSION 2.13.4
-)
+CPMAddPackage("gh:cpm-cmake/testpack-fibonacci@2.0")
+CPMAddPackage("gh:catchorg/Catch2@2.13.4")

 # ---- Create binary ----

--- a/examples/cxxopts/CMakeLists.txt
+++ b/examples/cxxopts/CMakeLists.txt
@@ -6,12 +6,7 @@ project(CPMExampleCXXOpts)

 include(../../cmake/CPM.cmake)

-CPMAddPackage(
-  NAME cxxopts
-  GITHUB_REPOSITORY jarro2783/cxxopts
-  VERSION 2.2.0
-  OPTIONS "CXXOPTS_BUILD_EXAMPLES Off" "CXXOPTS_BUILD_TESTS Off"
-)
+CPMAddPackage("gh:jarro2783/cxxopts@2.2.0")

 # ---- Create binary ----

--- a/examples/cxxopts/main.cpp
+++ b/examples/cxxopts/main.cpp
@@ -3,8 +3,14 @@

 int main(int argc, char** argv) {
  cxxopts::Options options("MyProgram", "One line description of MyProgram");
-  options.add_options()("h,help", "Show help")("d,debug", "Enable debugging")(
-      "f,file", "File name", cxxopts::value<std::string>());
+
+  // clang-format off
+  options.add_options()
+    ("h,help", "Show help")
+    ("d,debug", "Enable debugging")
+    ("f,file", "File name", cxxopts::value<std::string>()
+  );
+  // clang-format on

  auto result = options.parse(argc, argv);

--- a/examples/doctest/CMakeLists.txt
+++ b/examples/doctest/CMakeLists.txt
@@ -6,17 +6,8 @@ project(CPMExampleDoctest)

 include(../../cmake/CPM.cmake)

-CPMAddPackage(
-  NAME fibonacci
-  GITLAB_REPOSITORY TheLartians/Fibonacci
-  VERSION 2.0
-)
-
-CPMAddPackage(
-  NAME doctest
-  GITHUB_REPOSITORY onqtam/doctest
-  GIT_TAG 2.4.5
-)
+CPMAddPackage("gh:cpm-cmake/testpack-fibonacci@2.0")
+CPMAddPackage("gh:onqtam/doctest#2.4.5")

 # ---- Create binary ----

--- a/examples/fmt/CMakeLists.txt
+++ b/examples/fmt/CMakeLists.txt
@@ -6,11 +6,7 @@ project(CPMJSONExample)

 include(../../cmake/CPM.cmake)

-CPMAddPackage(
-  NAME fmt
-  GIT_TAG 7.1.3
-  GITHUB_REPOSITORY fmtlib/fmt
-)
+CPMAddPackage("gh:fmtlib/fmt#7.1.3")

 # ---- Executable ----

--- a/examples/gtest/CMakeLists.txt
+++ b/examples/gtest/CMakeLists.txt
@@ -6,11 +6,7 @@ project(CPMExampleGtest)

 include(../../cmake/CPM.cmake)

-CPMAddPackage(
-  NAME fibonacci
-  GITLAB_REPOSITORY TheLartians/Fibonacci
-  VERSION 2.0
-)
+CPMAddPackage("gh:cpm-cmake/testpack-fibonacci@2.0")

 CPMAddPackage(
  NAME googletest
--- a/examples/json/CMakeLists.txt
+++ b/examples/json/CMakeLists.txt
@@ -5,22 +5,10 @@ project(CPMJSONExample)
 # ---- Dependencies ----

 include(../../cmake/CPM.cmake)
-
-CPMAddPackage(
-  NAME nlohmann_json
-  VERSION 3.9.1
-  # not using the repo as it takes forever to clone
-  URL https://github.com/nlohmann/json/releases/download/v3.9.1/include.zip
-  URL_HASH SHA256=6bea5877b1541d353bd77bdfbdb2696333ae5ed8f9e8cc22df657192218cad91
-)
-
-if(nlohmann_json_ADDED)
-  add_library(nlohmann_json INTERFACE)
-  target_include_directories(nlohmann_json SYSTEM INTERFACE ${nlohmann_json_SOURCE_DIR}/include)
-endif()
+CPMAddPackage("gh:nlohmann/json@3.10.5")

 # ---- Executable ----

 add_executable(CPMJSONExample main.cpp)
 target_compile_features(CPMJSONExample PRIVATE cxx_std_17)
-target_link_libraries(CPMJSONExample nlohmann_json)
+target_link_libraries(CPMJSONExample nlohmann_json::nlohmann_json)
--- a/examples/linenoise/CMakeLists.txt
+++ b/examples/linenoise/CMakeLists.txt
@@ -6,11 +6,7 @@ project(CPMlinenoiseExample)

 include(../../cmake/CPM.cmake)

-CPMAddPackage(
-  NAME linenoise
-  GIT_TAG 1.0
-  GITHUB_REPOSITORY antirez/linenoise
-)
+CPMAddPackage("gh:antirez/linenoise#1.0")

 if(linenoise_ADDED)
  add_library(linenoise ${linenoise_SOURCE_DIR}/linenoise.c)
--- a/examples/range-v3/CMakeLists.txt
+++ b/examples/range-v3/CMakeLists.txt
@@ -6,18 +6,7 @@ project(CPMRangev3Example)

 include(../../cmake/CPM.cmake)

-CPMAddPackage(
-  NAME range-v3
-  URL https://github.com/ericniebler/range-v3/archive/0.11.0.zip
-  VERSION 0.11.0
-  # the range-v3 CMakeLists screws with configuration options
-  DOWNLOAD_ONLY True
-)
-
-if(range-v3_ADDED)
-  add_library(range-v3 INTERFACE IMPORTED)
-  target_include_directories(range-v3 SYSTEM INTERFACE "${range-v3_SOURCE_DIR}/include")
-endif()
+CPMAddPackage("gh:ericniebler/range-v3#0.11.0")

 # ---- Executable ----

--- a/examples/range-v3/main.cpp
+++ b/examples/range-v3/main.cpp
@@ -32,7 +32,7 @@ auto is_six = [](int i) { return i == 6; };
 int main() {
  std::vector<int> v{6, 2, 3, 4, 5, 6};
  cout << std::boolalpha;
-  cout << "vector: " << ranges::view::all(v) << '\n';
+  cout << "vector: " << ranges::views::all(v) << '\n';

  cout << "vector any_of is_six: " << ranges::any_of(v, is_six) << '\n';
  cout << "vector all_of is_six: " << ranges::all_of(v, is_six) << '\n';
--- a/examples/spdlog/CMakeLists.txt
+++ b/examples/spdlog/CMakeLists.txt
@@ -6,11 +6,7 @@ project(CPMSpdlogExample)

 include(../../cmake/CPM.cmake)

-CPMAddPackage(
-  NAME spdlog
-  GITHUB_REPOSITORY gabime/spdlog
-  VERSION 1.8.2
-)
+CPMAddPackage("gh:gabime/spdlog@1.8.2")

 # ---- Executable ----

--- a/examples/yaml/CMakeLists.txt
+++ b/examples/yaml/CMakeLists.txt
@@ -6,13 +6,7 @@ project(CPMYamlExample)

 include(../../cmake/CPM.cmake)

-CPMAddPackage(
-  NAME yaml-cpp
-  GIT_REPOSITORY https://github.com/jbeder/yaml-cpp.git
-  VERSION 0.6.3
-  GIT_TAG yaml-cpp-0.6.3
-  OPTIONS "YAML_CPP_BUILD_TESTS Off" "YAML_CPP_BUILD_CONTRIB Off" "YAML_CPP_BUILD_TOOLS Off"
-)
+CPMAddPackage("gh:jbeder/yaml-cpp#yaml-cpp-0.6.3@0.6.3")

 # ---- Executable ----

--- a/test/integration/.gitignore
+++ b/test/integration/.gitignore
@@ -0,0 +1,2 @@
+# Use this to have a local integration test which is for personal experiments
+test_local.rb
--- a/test/integration/README.md
+++ b/test/integration/README.md
@@ -0,0 +1,44 @@
+# CPM.cmake Integration Tests
+
+The integration tests of CPM.cmake are written in Ruby. They use a custom integration test framework which extends the [Test::Unit](https://www.rubydoc.info/github/test-unit/test-unit/Test/Unit) library.
+
+They require Ruby 2.7.0 or later.
+
+## Running tests
+
+To run all tests from the repo root execute:
+
+```
+$ ruby test/integration/runner.rb
+```
+
+The runner will run all tests and generate a report of the exeuction.
+
+The current working directory doesn't matter. If you are in `<repo-root>/test/integration`, you can run simply `$ ruby runner.rb`.
+
+You can execute with `--help` (`$ ruby runner.rb --help`) to see various configuration options of the runner like running individual tests or test cases, or ones that match a regex.
+
+The tests themselves are situated in the Ruby scripts prefixed with `test_`. `<repo-root>/test/integration/test_*`. You can also run an individual test script. For example to only run the **basics** test case, you can execute `$ ruby test_basics.rb`
+
+The tests generate CMake scripts and execute CMake and build toolchains. By default they do this in a directory they generate in your temp path (`/tmp/cpm-test/` on Linux). You can configure the working directory of the tests with an environment variable `CPM_INTEGRATION_TEST_DIR`. For example `$ CPM_INTEGRATION_TEST_DIR=~/mycpmtest; ruby runner.rb`
+
+## Writing tests
+
+Writing tests makes use of the custom integration test framework in `lib.rb`. It is a relatively small extension of Ruby's Test::Unit library.
+
+### The Gist
+
+* Tests cases are Ruby scripts in this directory. The file names must be prefixed with `test_`
+* The script should `require_relative './lib'` to allow for individual execution (or else if will only be executable from the runner)
+* A test case file should contain a single class which inherits from `IntegrationTest`. It *can* contain multiple classes, but that's bad practice as it makes individual execution harder and implies a dependency between the classes.
+* There should be no dependency between the test scripts. Each should be executable individually and the order in which multiple ones are executed mustn't matter.
+* The class should contain methods, also prefixed with `test_` which will be executed by the framework. In most cases there would be a single test method per class.
+* In case there are multiple test methods, they will be executed in the order in which they are defined.
+* The test methods should contain assertions which check for the expected state of things at varous points of the test's execution.
+
+### More
+
+* [A basic tutorial on writing integration tests.](tutorial.md)
+* [A brief reference of the integration test framework](reference.md)
+* Make sure you're familiar with the [idiosyncrasies](idiosyncrasies.md) of writing integration tests
+* [Some tips and tricks](tips.md)
--- a/test/integration/idiosyncrasies.md
+++ b/test/integration/idiosyncrasies.md
@@ -0,0 +1,98 @@
+# Notable Idiosyncrasies When Writing Integration Tests
+
+As an integration test framework based on a unit test framework the one created for CPM.cmake suffers from several idiosyncrasies. Make sure you familiarize yourself with them before writing integration tests.
+
+## No shared instance variables between methods
+
+The runner will create an instance of the test class for each test method. This means that instance variables defined in a test method, *will not* be visible in another. For example:
+
+```ruby
+class MyTest < IntegrationTest
+  def test_something
+    @x = 123
+    assert_equal 123, @x # Pass. @x is 123
+  end
+  def test_something_else
+    assert_equal 123, @x # Fail! @x would be nil here
+  end
+end
+```
+
+There are hacks around sharing Ruby state between methods, but we choose not to use them. If you want to initialize something for all test methods, use `setup`.
+
+```ruby
+class MyTest < IntegrationTest
+  def setup
+    @x = 123
+  end
+  def test_something
+    assert_equal 123, @x # Pass. @x is 123 thanks to setup
+  end
+  def test_something_else
+    assert_equal 123, @x # Pass. @x is 123 thanks to setup
+  end
+end
+```
+
+## `IntegrationTest` makes use of `Test::Unit::TestCase#cleanup`
+
+After each test method the `cleanup` method is called thanks to Test::Unit. If you require the use of `cleanup` in your own tests, make sure you call `super` to also run `IntegrationTest#cleanup`.
+
+```ruby
+class MyTest < IntegrationTest
+  def cleanup
+    super
+    my_cleanup
+  end
+  # ...
+end
+```
+
+## It's better to have assertions in test methods as opposed to helper methods
+
+Test::Unit will display a helpful message if an assertion has failed. It will also include the line of code in the test method which caused the failure. However if an assertion is not in the test method, it will display the line which calls the method in which it is. So, please try, to have most assertions in test methods (though we acknowledge that in certain cases this is not practical). For example, if you only require scopes, try using lambdas.
+
+Instead of this:
+
+```ruby
+class MyTest < IntegrationTest
+  def test_something
+    do_a
+    do_b
+    do_c
+  end
+  def do_a
+    # ...
+  end
+  def do_b
+    # ...
+    assert false # will display failed line as "do_b"
+  end
+  def do_c
+    # ...
+  end
+end
+```
+
+...write this:
+
+```ruby
+class MyTest < IntegrationTest
+  def test_something
+    do_a = -> {
+      # ...
+    }
+    do_b = -> {
+      # ...
+      assert false # will display failed line as "assert false"
+    }
+    do_c = -> {
+      # ...
+    }
+
+    do_a.()
+    do_b.()
+    do_c.()
+  end
+end
+```
--- a/test/integration/lib.rb
+++ b/test/integration/lib.rb
@@ -0,0 +1,200 @@
+require 'fileutils'
+require 'open3'
+require 'tmpdir'
+require 'test/unit'
+
+module TestLib
+  TMP_DIR = File.expand_path(ENV['CPM_INTEGRATION_TEST_DIR'] || File.join(Dir.tmpdir, 'cpm-test', Time.now.strftime('%Y_%m_%d-%H_%M_%S')))
+  CPM_PATH = File.expand_path('../../cmake/CPM.cmake', __dir__)
+
+  TEMPLATES_DIR = File.expand_path('templates', __dir__)
+
+  # Environment variables which are read by cpm
+  CPM_ENV = %w(
+    CPM_USE_LOCAL_PACKAGES
+    CPM_LOCAL_PACKAGES_ONLY
+    CPM_DOWNLOAD_ALL
+    CPM_DONT_UPDATE_MODULE_PATH
+    CPM_DONT_CREATE_PACKAGE_LOCK
+    CPM_INCLUDE_ALL_IN_PACKAGE_LOCK
+    CPM_USE_NAMED_CACHE_DIRECTORIES
+    CPM_SOURCE_CACHE
+  )
+  def self.clear_env
+    CPM_ENV.each { ENV[_1] = nil }
+  end
+end
+
+puts "Warning: test directory '#{TestLib::TMP_DIR}' already exists" if File.exist?(TestLib::TMP_DIR)
+raise "Cannot find 'CPM.cmake' at '#{TestLib::CPM_PATH}'" if !File.file?(TestLib::CPM_PATH)
+
+puts "Running CPM.cmake integration tests"
+puts "Temp directory: '#{TestLib::TMP_DIR}'"
+
+# Clean all CPM-related env vars
+TestLib.clear_env
+
+class Project
+  def initialize(src_dir, bin_dir)
+    @src_dir = src_dir
+    @bin_dir = bin_dir
+  end
+
+  attr :src_dir, :bin_dir
+
+  def create_file(target_path, text, args = {})
+    target_path = File.join(@src_dir, target_path)
+
+    # tweak args
+    args[:cpm_path] = TestLib::CPM_PATH if !args[:cpm_path]
+    args[:packages] = [args[:package]] if args[:package] # if args contain package, create the array
+    args[:packages] = args[:packages].join("\n") if args[:packages] # join all packages if any
+
+    File.write target_path, text % args
+  end
+
+  def create_file_from_template(target_path, source_path, args = {})
+    source_path = File.join(@src_dir, source_path)
+    raise "#{source_path} doesn't exist" if !File.file?(source_path)
+    src_text = File.read source_path
+    create_file target_path, src_text, args
+  end
+
+  # common function to create ./CMakeLists.txt from ./lists.in.cmake
+  def create_lists_from_default_template(args = {})
+    create_file_from_template 'CMakeLists.txt', 'lists.in.cmake', args
+  end
+
+  CommandResult = Struct.new :out, :err, :status
+  def configure(extra_args = '')
+    CommandResult.new *Open3.capture3("cmake -S #{@src_dir} -B #{@bin_dir} #{extra_args}")
+  end
+  def build(extra_args = '')
+    CommandResult.new *Open3.capture3("cmake --build #{@bin_dir} #{extra_args}")
+  end
+
+  class CMakeCache
+    class Entry
+      def initialize(val, type, advanced, desc)
+        @val = val
+        @type = type
+        @advanced = advanced
+        @desc = desc
+      end
+      attr :val, :type, :advanced, :desc
+      alias_method :advanced?, :advanced
+      def inspect
+        "(#{val.inspect} #{type}" + (advanced? ? ' ADVANCED)' : ')')
+      end
+    end
+
+    Package = Struct.new(:ver, :src_dir, :bin_dir)
+
+    def self.from_dir(dir)
+      entries = {}
+      cur_desc = ''
+      file = File.join(dir, 'CMakeCache.txt')
+      return nil if !File.file?(file)
+      File.readlines(file).each { |line|
+        line.strip!
+        next if line.empty?
+        next if line.start_with? '#' # comment
+        if line.start_with? '//'
+          cur_desc += line[2..]
+        else
+          m = /(.+?)(-ADVANCED)?:([A-Z]+)=(.*)/.match(line)
+          raise "Error parsing '#{line}' in #{file}" if !m
+          entries[m[1]] = Entry.new(m[4], m[3], !!m[2], cur_desc)
+          cur_desc = ''
+        end
+      }
+      CMakeCache.new entries
+    end
+
+    def initialize(entries)
+      @entries = entries
+
+      package_list = self['CPM_PACKAGES']
+      @packages = if package_list
+        # collect package data
+        @packages = package_list.split(';').map { |name|
+          [name, Package.new(
+            self["CPM_PACKAGE_#{name}_VERSION"],
+            self["CPM_PACKAGE_#{name}_SOURCE_DIR"],
+            self["CPM_PACKAGE_#{name}_BINARY_DIR"]
+          )]
+        }.to_h
+      else
+        {}
+      end
+    end
+
+    attr :entries, :packages
+
+    def [](key)
+      e = @entries[key]
+      return nil if !e
+      e.val
+    end
+  end
+  def read_cache
+    CMakeCache.from_dir @bin_dir
+  end
+end
+
+class IntegrationTest < Test::Unit::TestCase
+  self.test_order = :defined # run tests in order of defintion (as opposed to alphabetical)
+
+  def cleanup
+    # Clear cpm-related env vars which may have been set by the test
+    TestLib.clear_env
+  end
+
+  # extra assertions
+
+  def assert_success(res)
+    msg = build_message(nil, "command status was expected to be a success, but failed with code <?> and STDERR:\n\n#{res.err}", res.status.to_i)
+    assert_block(msg) { res.status.success? }
+  end
+
+  def assert_same_path(a, b)
+    msg = build_message(nil, "<?> expected but was\n<?>", a, b)
+    assert_block(msg) { File.identical? a, b }
+  end
+
+  # utils
+  class << self
+    def startup
+      @@test_dir = File.join(TestLib::TMP_DIR, self.name.
+        # to-underscore conversion from Rails
+        gsub(/::/, '/').
+        gsub(/([A-Z]+)([A-Z][a-z])/,'\1_\2').
+        gsub(/([a-z\d])([A-Z])/,'\1_\2').
+        tr("-", "_").
+        downcase
+      )
+    end
+  end
+
+  def cur_test_dir
+    @@test_dir
+  end
+
+  def make_project(template_dir = nil)
+    test_name = local_name
+    test_name = test_name[5..] if test_name.start_with?('test_')
+
+    base = File.join(cur_test_dir, test_name)
+    src_dir = base + '-src'
+
+    FileUtils.mkdir_p src_dir
+
+    if template_dir
+      template_dir = File.join(TestLib::TEMPLATES_DIR, template_dir)
+      raise "#{template_dir} is not a directory" if !File.directory?(template_dir)
+      FileUtils.copy_entry template_dir, src_dir
+    end
+
+    Project.new src_dir, base + '-bin'
+  end
+end
--- a/test/integration/reference.md
+++ b/test/integration/reference.md
@@ -0,0 +1,65 @@
+# Integration Test Framework Refernce
+
+## `TestLib`
+
+A module for the framework. Provides global data and functionality. For ease of use the utility classes are *not* in this module.
+
+Provides:
+
+* `TMP_DIR` - the temporary directory for the current test run
+* `CPM_PATH` - path to CPM.cmake. The thing that is being tested
+* `TEMPLATES_DIR` - path to integration test templates
+* `CPM_ENV` - an array of the names of all environment variables, which CPM.cmake may read
+* `.clear_env` - a function to clear all aforementioned environment variables
+
+## `Project`
+
+A helper class to manage a CMake project.
+
+Provides:
+
+* `#initialize(src_dir, bin_dir)` - create a project with a given source and binary directory
+* `#src_dir`, `#bin_dir` - get project directories
+* `#create_file(target_path, text, args = {})` - create a file in the project's source directory with a given test. The `args` hash is used to interpolate markup in the text string.
+    * Will set `:cpm_path` in `args` to `TestLib::CPM_PATH` if not already present.
+    * If `:package` is present it will be added to the array `:packages`
+    * Will convert `:packages` form an array to a string
+* `#create_file_from_template(target_path, source_path, args = {})` - create a file in the project source directory, based on another file in the project source directory. The contents of the file at `source_path` will be read and used in `create_file`
+* `#create_lists_from_default_template(args = {})` - same as `create_file_from_template('CMakeLists.txt', 'lists.in.cmake', args)`
+* `::CommandResult` - a struct of:
+    * `out` - the standard output from a command execution
+    * `err` - the standard error output from the execution
+    * `status` - the [`Process::Status`](https://ruby-doc.org/core-2.7.0/Process/Status.html) of the execution
+* `#configure(extra_args = '') => CommandResult` - configure the project with optional extra args to CMake
+* `#build(extra_args = '') => CommandResult` - build the project with optional extra args to CMake
+* `::CMakeCache` - a helper class with the contents of a CMakeCache.txt. Provides:
+    * `::Entry` - a CMake cache entry of:
+        * `val` - the value as string
+        * `type` - the type as string
+        * `advanced?` - whether the entry is an advanced option
+        * `desc` - the description of the entry (can be an empty string)
+    * `::Package` - the CMake cache for a CPM.cmake package. A struct of:
+        * `ver` - the version as string
+        * `src_dir`, `bin_dir` - the source and binary directories of the package
+    * `.from_dir(dir)` - create an instance of `CMakeCache` from `<dir>/CMakeLists.txt`
+    * `#initialize(entries)` - create a cache from a hash of entries by name. Will populate packages.
+    * `#entries => {String => Entry}` - the entries of the cache
+    * `#packages => {String => Package}` - CPM.cmake packages by name found in the cache
+    * `#[](key) => String` - an entry value from an entry name. Created because the value is expected to be needed much more frequently than the entire entry data. To get a full entry use `cache.entries['name']`.
+* `read_cache => CMakeCache` - reads the CMake cache in the binary directory of the project and returns it as a `CMakeCache` instance
+
+## `IntegrationTest`
+
+The class which must be a parent of all integration test case classes. It itself extends `Test::Unit::TestCase` with:
+
+### Assertions
+
+* `assert_success(res)` - assert that an instance of `Project::CommandResult` is a success
+* `assert_same_path(a, b)` - assert that two strings represent the same path. For example on Windows `c:\foo` and `C:\Foo` do.
+
+### Utils
+
+* `cur_test_dir` - the directory of the current test case. A subdirectory of `TestLib::TMP_DIR`
+* `make_project(template_dir = nil)` - create a project from a test method. Will create a the project's source and binary directories as subdirectories of `cur_test_dir`.
+    * Optionally work with a template directory, in which case it will copy the contents of the template directory (one from `templates`) in the project's source directory.
+
--- a/test/integration/runner.rb
+++ b/test/integration/runner.rb
@@ -0,0 +1,4 @@
+require_relative './lib'
+
+exit Test::Unit::AutoRunner::run(true, __dir__)
+
--- a/test/integration/templates/no-deps/lists.in.cmake
+++ b/test/integration/templates/no-deps/lists.in.cmake
@@ -0,0 +1,7 @@
+cmake_minimum_required(VERSION 3.14 FATAL_ERROR)
+
+project(no-deps)
+
+include("%{cpm_path}")
+
+add_executable(no-deps main.c)
--- a/test/integration/templates/no-deps/main.c
+++ b/test/integration/templates/no-deps/main.c
@@ -0,0 +1,6 @@
+#include <stdio.h>
+
+int main() {
+  puts("Hello");
+  return 0;
+}
--- a/test/integration/templates/using-adder/lists.in.cmake
+++ b/test/integration/templates/using-adder/lists.in.cmake
@@ -0,0 +1,13 @@
+cmake_minimum_required(VERSION 3.14 FATAL_ERROR)
+
+project(using-adder)
+
+set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin)
+
+include("%{cpm_path}")
+
+%{packages}
+
+add_executable(using-adder using-adder.cpp)
+
+target_link_libraries(using-adder adder)
--- a/test/integration/templates/using-adder/using-adder.cpp
+++ b/test/integration/templates/using-adder/using-adder.cpp
@@ -0,0 +1,8 @@
+#include <adder/adder.hpp>
+#include <cstdio>
+
+int main() {
+  int sum = adder::add(5, 3);
+  std::printf("%d\n", sum);
+  return 0;
+}
--- a/test/integration/templates/using-fibadder/lists.in.cmake
+++ b/test/integration/templates/using-fibadder/lists.in.cmake
@@ -0,0 +1,13 @@
+cmake_minimum_required(VERSION 3.14 FATAL_ERROR)
+
+project(using-fibadder)
+
+set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin)
+
+include("%{cpm_path}")
+
+%{packages}
+
+add_executable(using-fibadder using-fibadder.cpp)
+
+target_link_libraries(using-fibadder fibadder)
--- a/test/integration/templates/using-fibadder/using-fibadder.cpp
+++ b/test/integration/templates/using-fibadder/using-fibadder.cpp
@@ -0,0 +1,8 @@
+#include <cstdio>
+#include <fibadder/fibadder.hpp>
+
+int main() {
+  int sum = fibadder::fibadd(6, 7);
+  std::printf("%d\n", sum);
+  return 0;
+}
--- a/test/integration/test_basics.rb
+++ b/test/integration/test_basics.rb
@@ -0,0 +1,56 @@
+require_relative './lib'
+
+# Tests of cpm caches and vars when no packages are used
+
+class Basics < IntegrationTest
+  # Test cpm caches with no cpm-related env vars
+  def test_cpm_default
+    prj = make_project 'no-deps'
+    prj.create_lists_from_default_template
+    assert_success prj.configure
+
+    @cache = prj.read_cache
+
+    assert_empty @cache.packages
+
+    assert_same_path TestLib::CPM_PATH, check_and_get('CPM_FILE')
+    assert_same_path File.dirname(TestLib::CPM_PATH), check_and_get('CPM_DIRECTORY')
+
+    assert_equal 'OFF', check_and_get('CPM_DRY_RUN')
+    assert_equal 'CPM:', check_and_get('CPM_INDENT')
+    assert_equal '1.0.0-development-version', check_and_get('CPM_VERSION')
+
+    assert_equal 'OFF', check_and_get('CPM_SOURCE_CACHE', 'PATH')
+    assert_equal 'OFF', check_and_get('CPM_DOWNLOAD_ALL', 'BOOL')
+    assert_equal 'OFF', check_and_get('CPM_LOCAL_PACKAGES_ONLY', 'BOOL')
+    assert_equal 'OFF', check_and_get('CPM_USE_LOCAL_PACKAGES', 'BOOL')
+    assert_equal 'OFF', check_and_get('CPM_USE_NAMED_CACHE_DIRECTORIES', 'BOOL')
+
+    assert_equal 'OFF', check_and_get('CPM_DONT_CREATE_PACKAGE_LOCK', 'BOOL')
+    assert_equal 'OFF', check_and_get('CPM_INCLUDE_ALL_IN_PACKAGE_LOCK', 'BOOL')
+    assert_same_path File.join(prj.bin_dir, 'cpm-package-lock.cmake'), check_and_get('CPM_PACKAGE_LOCK_FILE')
+
+    assert_equal 'OFF', check_and_get('CPM_DONT_UPDATE_MODULE_PATH', 'BOOL')
+    assert_same_path File.join(prj.bin_dir, 'CPM_modules'), check_and_get('CPM_MODULE_PATH')
+  end
+
+  # Test when env CPM_SOURCE_CACHE is set
+  def test_env_cpm_source_cache
+    ENV['CPM_SOURCE_CACHE'] = cur_test_dir
+
+    prj = make_project 'no-deps'
+    prj.create_lists_from_default_template
+    assert_success prj.configure
+
+    @cache = prj.read_cache
+
+    assert_equal cur_test_dir, check_and_get('CPM_SOURCE_CACHE', 'PATH')
+  end
+
+  def check_and_get(key, type = 'INTERNAL')
+    e = @cache.entries[key]
+    assert_not_nil e, key
+    assert_equal type, e.type, key
+    e.val
+  end
+end
--- a/test/integration/test_fetchcontent_compatibility.rb
+++ b/test/integration/test_fetchcontent_compatibility.rb
@@ -0,0 +1,43 @@
+require_relative './lib'
+
+# Tests FetchContent overriding with CPM
+
+class FetchContentCompatibility < IntegrationTest
+  def setup
+    @cache_dir = File.join(cur_test_dir, 'cpmcache')
+    ENV['CPM_SOURCE_CACHE'] = @cache_dir
+  end
+
+  def test_add_dependency_cpm_and_fetchcontent
+    prj = make_project 'using-adder'
+    
+    prj.create_lists_from_default_template package: <<~PACK
+      CPMAddPackage(
+        NAME testpack-adder
+        GITHUB_REPOSITORY cpm-cmake/testpack-adder
+        VERSION 1.0.0
+        OPTIONS "ADDER_BUILD_TESTS OFF"
+      )
+
+      # should have no effect, as we added the dependency using CPM
+      FetchContent_Declare(
+        testpack-adder
+        GIT_REPOSITORY https://github.com/cpm-cmake/testpack-adder
+        GIT_TAG v1.0.0
+      )
+      FetchContent_MakeAvailable(testpack-adder)
+    PACK
+
+    # configure with unpopulated cache
+    assert_success prj.configure
+    assert_success prj.build
+
+    # cache is populated
+    assert_true File.exist?(File.join(@cache_dir, "testpack-adder"))
+
+    # configure with populated cache
+    assert_success prj.configure
+    assert_success prj.build
+  end
+
+end
--- a/test/integration/test_simple.rb
+++ b/test/integration/test_simple.rb
@@ -0,0 +1,91 @@
+require_relative './lib'
+
+class Simple < IntegrationTest
+  ADDER_PACKAGE_NAME = 'testpack-adder'
+
+  def test_update_single_package
+    prj = make_project 'using-adder'
+    adder_cache0 = nil
+    adder_ver_file = nil
+
+    create_with_commit_sha = -> {
+      prj.create_lists_from_default_template package:
+        'CPMAddPackage("gh:cpm-cmake/testpack-adder#cad1cd4b4cdf957c5b59e30bc9a1dd200dbfc716")'
+      assert_success prj.configure
+
+      cache = prj.read_cache
+      assert_equal 1, cache.packages.size
+
+      adder_cache = cache.packages[ADDER_PACKAGE_NAME]
+      assert_not_nil adder_cache
+      assert_equal '0', adder_cache.ver
+      assert File.directory? adder_cache.src_dir
+      assert File.directory? adder_cache.bin_dir
+
+      adder_ver_file = File.join(adder_cache.src_dir, 'version')
+      assert File.file? adder_ver_file
+      assert_equal 'initial', File.read(adder_ver_file).strip
+
+      # calculated adder values
+      assert_equal 'ON', cache['ADDER_BUILD_EXAMPLES']
+      assert_equal 'ON', cache['ADDER_BUILD_TESTS']
+      assert_equal adder_cache.src_dir, cache['adder_SOURCE_DIR']
+      assert_equal adder_cache.bin_dir, cache['adder_BINARY_DIR']
+
+      # store for future comparisons
+      adder_cache0 = adder_cache
+    }
+    update_to_version_1 = -> {
+      prj.create_lists_from_default_template package:
+        'CPMAddPackage("gh:cpm-cmake/testpack-adder@1.0.0")'
+      assert_success prj.configure
+
+      cache = prj.read_cache
+      assert_equal 1, cache.packages.size
+
+      adder_cache = cache.packages[ADDER_PACKAGE_NAME]
+      assert_not_nil adder_cache
+      assert_equal '1.0.0', adder_cache.ver
+
+      # dirs shouldn't have changed
+      assert_equal adder_cache0.src_dir, adder_cache.src_dir
+      assert_equal adder_cache0.bin_dir, adder_cache.bin_dir
+
+      assert_equal '1.0.0', File.read(adder_ver_file).strip
+    }
+    update_with_option_off_and_build = -> {
+      prj.create_lists_from_default_template package: <<~PACK
+        CPMAddPackage(
+          NAME testpack-adder
+          GITHUB_REPOSITORY cpm-cmake/testpack-adder
+          VERSION 1.0.0
+          OPTIONS "ADDER_BUILD_TESTS OFF"
+        )
+      PACK
+      assert_success prj.configure
+      assert_success prj.build
+
+      exe_dir = File.join(prj.bin_dir, 'bin')
+      assert File.directory? exe_dir
+
+      exes = Dir[exe_dir + '/**/*'].filter {
+        # on multi-configuration generators (like Visual Studio) the executables will be in bin/<Config>
+        # also filter-out other articacts like .pdb or .dsym
+        !File.directory?(_1) && File.stat(_1).executable?
+      }.map {
+        # remove .exe extension if any (there will be one on Windows)
+        File.basename(_1, '.exe')
+      }.sort
+
+      # we should end up with two executables
+      # * simple - the simple example from adder
+      # * using-adder - for this project
+      # ...and notably no test for adder, which must be disabled from the option override from above
+      assert_equal ['simple', 'using-adder'], exes
+    }
+
+    create_with_commit_sha.()
+    update_to_version_1.()
+    update_with_option_off_and_build.()
+  end
+end
--- a/test/integration/test_source_cache.rb
+++ b/test/integration/test_source_cache.rb
@@ -0,0 +1,80 @@
+require_relative './lib'
+
+# Tests with source cache
+
+class SourceCache < IntegrationTest
+  def setup
+    @cache_dir = File.join(cur_test_dir, 'cpmcache')
+    ENV['CPM_SOURCE_CACHE'] = @cache_dir
+  end
+
+  def test_add_remove_dependency
+    prj = make_project 'using-fibadder'
+
+    ###################################
+    # create
+    prj.create_lists_from_default_template package: 'CPMAddPackage("gh:cpm-cmake/testpack-fibadder@1.0.0")'
+    assert_success prj.configure
+
+    @cache = prj.read_cache
+
+    # fibadder - adder
+    #          \ fibonacci - Format
+    assert_equal 4, @cache.packages.size
+
+    check_package_cache 'testpack-fibadder', '1.0.0', '6a17d24c95c44a169ff8ba173f52876a2ba3d137'
+    check_package_cache 'testpack-adder', '1.0.0', '1a4c153849d8e0cf9a3a245e5f6ab6e4722d8995'
+    check_package_cache 'testpack-fibonacci', '2.0', '332c789cb09b8c2f92342dfb874c82bec643daf6'
+    check_package_cache 'Format.cmake', '1.0', 'c5897bd28c5032d45f7f669c8fb470790d2ae156'
+
+    ###################################
+    # add one package with a newer version
+    prj.create_lists_from_default_template packages: [
+      'CPMAddPackage("gh:cpm-cmake/testpack-adder@1.0.1")',
+      'CPMAddPackage("gh:cpm-cmake/testpack-fibadder@1.0.0")',
+    ]
+    assert_success prj.configure
+
+    @cache = prj.read_cache
+    assert_equal 4, @cache.packages.size
+
+    check_package_cache 'testpack-fibadder', '1.0.0', '6a17d24c95c44a169ff8ba173f52876a2ba3d137'
+    check_package_cache 'testpack-adder', '1.0.1', '84eb33c1b8db880083cefc2adf4dc3f04778cd44'
+    check_package_cache 'testpack-fibonacci', '2.0', '332c789cb09b8c2f92342dfb874c82bec643daf6'
+    check_package_cache 'Format.cmake', '1.0', 'c5897bd28c5032d45f7f669c8fb470790d2ae156'
+  end
+
+  def test_second_project
+    prj = make_project 'using-fibadder'
+    prj.create_lists_from_default_template package: 'CPMAddPackage("gh:cpm-cmake/testpack-fibadder@1.1.0")'
+    assert_success prj.configure
+
+    @cache = prj.read_cache
+
+    # fibadder - adder
+    #          \ fibonacci - Format
+    assert_equal 4, @cache.packages.size
+
+    check_package_cache 'testpack-fibadder', '1.1.0', '603d79d88d7230cc749460a0f476df862aa70ead'
+    check_package_cache 'testpack-adder', '1.0.1', '84eb33c1b8db880083cefc2adf4dc3f04778cd44'
+    check_package_cache 'testpack-fibonacci', '2.0', '332c789cb09b8c2f92342dfb874c82bec643daf6'
+    check_package_cache 'Format.cmake', '1.0', 'c5897bd28c5032d45f7f669c8fb470790d2ae156'
+  end
+
+  def test_cache_dir_contents
+    num_subdirs = -> (name) { Dir["#{File.join(@cache_dir, name.downcase)}/*/"].size }
+    assert_equal 2, num_subdirs.('testpack-fibadder')
+    assert_equal 2, num_subdirs.('testpack-adder')
+    assert_equal 1, num_subdirs.('testpack-fibonacci')
+    assert_equal 1, num_subdirs.('Format.cmake')
+  end
+
+  def check_package_cache(name, ver, dir_sha1)
+    package = @cache.packages[name]
+    assert_not_nil package, name
+    assert_equal ver, package.ver
+    expected_parent_dir = File.join(@cache_dir, name.downcase)
+    assert package.src_dir.start_with?(expected_parent_dir), "#{package.src_dir} must be in #{expected_parent_dir}"
+    assert_equal dir_sha1, File.basename(package.src_dir)
+  end
+end
--- a/test/integration/tips.md
+++ b/test/integration/tips.md
@@ -0,0 +1,35 @@
+# Tips and Tricks
+
+## Playing and experimenting
+
+Create a file called `test_local.rb` in this directory to have an integration test which is for your personal experiments and just playing with the integration test framework. `test_local.rb` is gitignored.
+
+## Speeding-up development
+
+Running an integration test requires configuring directories with CMake which can be quite slow. To speed-up development of integration tests consider doing the following steps:
+
+**Work with standalone tests**
+
+Instead of starting the runner, run just your integration test (`$ ruby test_your_test.rb`). This won't burden the execution with the others.
+
+**Export the environment variable `CPM_INTEGRATION_TEST_DIR` to some local directory**
+
+By default the framework generates a new temporary directory for each test run. If you override the temp directory to a specific one, rerunning the tests will work with the binary directories from the previous run and will improve the performance considerably.
+
+*NOTE HOWEVER* that in certain cases this may not be an option. Some tests might assert that certain artifacts in the temporary directory are missing but upon rerunning in an existing directory they will be there causing the test to fail.
+
+*ALSO NOTE* that this may silently affect reruns based on CMake caches from previous runs. If your test fails in peculiar ways on reruns, try a clean run. Always do a clean run before declaring a test a success.
+
+**Set `CPM_SOURCE_CACHE` even if the test doesn't require it**
+
+This is not a option for tests which explicitly check that there is no source cache. However certain tests may be indiferent to this. For such cases in development, you can add a setup function in the lines of:
+
+```ruby
+def setup
+  ENV['CPM_SOURCE_CACHE'] = '/home/myself/.testcpmcache'
+end
+```
+
+Then the packages from your test will be cached and not redownloaded every time which is a dramatic improvement in performance.
+
+*NOTE HOWEVER* that this may introduce subtle bugs. Always test without this dev-only addition, before declaring a test a success.
--- a/test/integration/tutorial.md
+++ b/test/integration/tutorial.md
@@ -0,0 +1,69 @@
+# Integration Test Tutorial
+
+Let's create an integration test which checks that CPM.cmake can make a specific package available.
+
+First we do some boilerplate.
+
+```ruby
+require_relative './lib'
+
+class MyTest < IntegrationTest
+  # test that CPM.cmake can make https://github.com/cpm-cmake/testpack-adder/ available as a package
+  def test_make_adder_available
+  end
+end
+```
+
+Now we have our test case class, and the single test method that we will require. Let's focus on the method's contents. The integration test framework provides us with a helper class, `Project`, which can be used for this scenario. A project has an assoiciated pair of source and binary directories in the temporary directory and it provides methods to work with them.
+
+We start by creating the project:
+
+```ruby
+prj = make_project
+```
+
+`make_project` is method of IntegrationTest which generates a source and a binary directory for it based on the name of our test class and test method. The project doesn't contain anything yet, so let's create some source files:
+
+```ruby
+prj.create_file 'main.cpp', <<~SRC
+  #include <iostream>
+  #include <adder/adder.hpp>
+  int main() {
+      std::cout << adder::add(1, 2) << '\\n';
+      return 0;
+  }
+SRC
+prj.create_file 'CMakeLists.txt', <<~SRC
+  cmake_minimum_required(VERSION 3.14 FATAL_ERROR)
+  project(using-adder)
+  set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin)
+  include("%{cpm_path}")
+  CPMAddPackage("gh:cpm-cmake/testpack-adder@1.0.0")
+  add_executable(using-adder main.cpp)
+  target_link_libraries(using-adder adder)
+SRC
+```
+
+Note the line `include("%{cpm_path}")` when creating `CMakeLists.txt`. It contains a markup `%{cpm_path}`. `Project#create_file` will see such markups and substitute them with the appropriate values (in this case the path to CPM.cmake).
+
+Now that we have the two files we need it's time we configure our project. We can use the opportunity to assert that the configure is successful as we expect it to be.
+
+```ruby
+assert_success prj.configure
+```
+
+Now we can read the generated `CMakeCache.txt` and assert that certain values we expect are inside. `Project` provides a method for that: `read_cache`. It will return an instance of `Project::CMakeCache` which contains the data from the cache and provides additional helper functionalities. One of them is `packages`, which is a hash of the CPM.cmake packages in the cache with their versions, binary, source directories. So let's get the cache and assert that there is only one CPM.cmake package inside ant it has the version we expect.
+
+```ruby
+cache = prj.read_cache
+assert_equal 1, cache.packages.size
+assert_equal '1.0.0', cache.packages['testpack-adder'].ver
+```
+
+Finally let's assert that the project can be built. This would mean that CPM.cmake has made the package available to our test project and that it has the appropriate include directories and link libraries to make an executable out of `main.cpp`.
+
+```ruby
+assert_success prj.build
+```
+
+You can see the entire code for this tutorial in [tutorial.rb](tutorial.rb) in this directory.
--- a/test/integration/tutorial.rb
+++ b/test/integration/tutorial.rb
@@ -0,0 +1,37 @@
+# This file is intentionally not prefixed with test_
+# It is a tutorial for making integration tests and is not to be run from the runner
+require_relative './lib'
+
+class Tutorial < IntegrationTest
+  # test that CPM.cmake can make https://github.com/cpm-cmake/testpack-adder/ available as a package
+  def test_make_adder_available
+    prj = make_project
+
+    prj.create_file 'main.cpp', <<~SRC
+      #include <iostream>
+      #include <adder/adder.hpp>
+      int main() {
+          std::cout << adder::add(1, 2) << '\\n';
+          return 0;
+      }
+    SRC
+
+    prj.create_file 'CMakeLists.txt', <<~SRC
+      cmake_minimum_required(VERSION 3.14 FATAL_ERROR)
+      project(using-adder)
+      set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin)
+      include("%{cpm_path}")
+      CPMAddPackage("gh:cpm-cmake/testpack-adder@1.0.0")
+      add_executable(using-adder main.cpp)
+      target_link_libraries(using-adder adder)
+    SRC
+
+    assert_success prj.configure
+
+    cache = prj.read_cache
+    assert_equal 1, cache.packages.size
+    assert_equal '1.0.0', cache.packages['testpack-adder'].ver
+
+    assert_success prj.build
+  end
+end
--- a/test/style/CMakeLists.txt
+++ b/test/style/CMakeLists.txt
@@ -6,7 +6,9 @@ include(${CMAKE_CURRENT_LIST_DIR}/../../cmake/CPM.cmake)

 CPMAddPackage(
  NAME Format.cmake
-  VERSION 1.6
+  VERSION 1.7.3
  GITHUB_REPOSITORY TheLartians/Format.cmake
-  OPTIONS "FORMAT_CHECK_CMAKE ON"
+  # We exclude cmake files from integration tests as they contain invalid lines of code which are
+  # used by the integration test scripts
+  OPTIONS "CMAKE_FORMAT_EXCLUDE integration/templates"
 )
--- a/test/unit/broken_dependency/.gitignore
+++ b/test/unit/broken_dependency/.gitignore
@@ -0,0 +1,2 @@
+/CMakeLists.txt
+/package-lock.cmake
--- a/test/unit/broken_dependency/CMakeLists.txt.in
+++ b/test/unit/broken_dependency/CMakeLists.txt.in
@@ -0,0 +1,13 @@
+cmake_minimum_required(VERSION 3.14 FATAL_ERROR)
+
+project(CPMTest)
+
+# ---- Dependencies ----
+
+include(@CPM_PATH@/CPM.cmake)
+
+CPMAddPackage(
+  NAME BrokenDependency
+  SOURCE_DIR ${CMAKE_CURRENT_LIST_DIR}/dependency
+  EXCLUDE_FROM_ALL @EXCLUDE_FROM_ALL@
+)
--- a/test/unit/broken_dependency/dependency/CMakeLists.txt
+++ b/test/unit/broken_dependency/dependency/CMakeLists.txt
@@ -0,0 +1,3 @@
+project(BrokenDependency)
+
+add_custom_target(error ALL ${CMAKE_COMMAND} -E false)
--- a/test/unit/cache.cmake
+++ b/test/unit/cache.cmake
@@ -33,7 +33,7 @@ set(FIBONACCI_VERSION 1.0)
 reset_test()

 execute_process(
-  COMMAND ${CMAKE_COMMAND} "-H${CMAKE_CURRENT_LIST_DIR}/remote_dependency" "-B${TEST_BUILD_DIR}"
+  COMMAND ${CMAKE_COMMAND} "-S${CMAKE_CURRENT_LIST_DIR}/remote_dependency" "-B${TEST_BUILD_DIR}"
          "-DCPM_SOURCE_CACHE=${CPM_SOURCE_CACHE_DIR}" RESULT_VARIABLE ret
 )

@@ -76,7 +76,7 @@ reset_test()

 execute_process(
  COMMAND ${CMAKE_COMMAND} -E env "CPM_SOURCE_CACHE=${CPM_SOURCE_CACHE_DIR}" ${CMAKE_COMMAND}
-          "-H${CMAKE_CURRENT_LIST_DIR}/remote_dependency" "-B${TEST_BUILD_DIR}" RESULT_VARIABLE ret
+          "-S${CMAKE_CURRENT_LIST_DIR}/remote_dependency" "-B${TEST_BUILD_DIR}" RESULT_VARIABLE ret
 )

 assert_equal(${ret} "0")
@@ -86,7 +86,7 @@ assert_exists("${CPM_SOURCE_CACHE_DIR}/fibonacci")

 execute_process(
  COMMAND ${CMAKE_COMMAND} -E env "CPM_SOURCE_CACHE=${CPM_SOURCE_CACHE_DIR}" ${CMAKE_COMMAND}
-          "-H${CMAKE_CURRENT_LIST_DIR}/remote_dependency" "-B${TEST_BUILD_DIR}-2"
+          "-S${CMAKE_CURRENT_LIST_DIR}/remote_dependency" "-B${TEST_BUILD_DIR}-2"
  RESULT_VARIABLE ret
 )

@@ -99,7 +99,7 @@ reset_test()
 execute_process(
  COMMAND
    ${CMAKE_COMMAND} -E env "CPM_SOURCE_CACHE=${CMAKE_CURRENT_BINARY_DIR}/junk" ${CMAKE_COMMAND}
-    "-H${CMAKE_CURRENT_LIST_DIR}/remote_dependency" "-B${TEST_BUILD_DIR}"
+    "-S${CMAKE_CURRENT_LIST_DIR}/remote_dependency" "-B${TEST_BUILD_DIR}"
    "-DCPM_SOURCE_CACHE=${CPM_SOURCE_CACHE_DIR}"
  RESULT_VARIABLE ret
 )
@@ -116,7 +116,7 @@ reset_test()

 execute_process(
  COMMAND ${CMAKE_COMMAND} -E env "CPM_SOURCE_CACHE=${CPM_SOURCE_CACHE_DIR}" ${CMAKE_COMMAND}
-          "-H${CMAKE_CURRENT_LIST_DIR}/remote_dependency" "-B${TEST_BUILD_DIR}" RESULT_VARIABLE ret
+          "-S${CMAKE_CURRENT_LIST_DIR}/remote_dependency" "-B${TEST_BUILD_DIR}" RESULT_VARIABLE ret
 )

 assert_equal(${ret} "0")
@@ -130,7 +130,7 @@ update_cmake_lists()

 execute_process(
  COMMAND ${CMAKE_COMMAND} -E env "CPM_SOURCE_CACHE=${CPM_SOURCE_CACHE_DIR}" ${CMAKE_COMMAND}
-          "-H${CMAKE_CURRENT_LIST_DIR}/remote_dependency" "-B${TEST_BUILD_DIR}" RESULT_VARIABLE ret
+          "-S${CMAKE_CURRENT_LIST_DIR}/remote_dependency" "-B${TEST_BUILD_DIR}" RESULT_VARIABLE ret
 )

 assert_equal(${ret} "0")
--- a/test/unit/dirty-cache-check.cmake
+++ b/test/unit/dirty-cache-check.cmake
@@ -0,0 +1,49 @@
+include(${CPM_PATH}/CPM.cmake)
+include(${CPM_PATH}/testing.cmake)
+
+set(baseDir "${CMAKE_CURRENT_BINARY_DIR}/test_dirty_cache")
+
+find_package(Git REQUIRED)
+
+function(git_do dir)
+  execute_process(
+    COMMAND ${GIT_EXECUTABLE} -c user.name='User' -c user.email='user@email.org' ${ARGN}
+    RESULT_VARIABLE result
+    OUTPUT_VARIABLE status
+    OUTPUT_STRIP_TRAILING_WHITESPACE
+    WORKING_DIRECTORY "${dir}"
+  )
+  if(result)
+    message(FATAL_ERROR "git ${ARGN} fail: ${result} ${status}")
+  endif()
+endfunction()
+
+file(MAKE_DIRECTORY "${baseDir}")
+
+file(WRITE "${baseDir}/draft.txt" "this is a test")
+
+git_do("${baseDir}" init -b main)
+git_do("${baseDir}" commit --allow-empty -m "empty repo")
+message(STATUS "empty repo with file")
+cpm_check_git_working_dir_is_clean(${baseDir} HEAD emptygit_test)
+assert_falsy(emptygit_test)
+
+git_do("${baseDir}" add draft.txt)
+git_do("${baseDir}" commit -m "test change")
+git_do("${baseDir}" tag v0.0.0)
+message(STATUS "commit a change")
+cpm_check_git_working_dir_is_clean(${baseDir} v0.0.0 onecommit_test)
+assert_truthy(onecommit_test)
+
+file(WRITE "${baseDir}/draft.txt" "a modification")
+message(STATUS "dirty repo")
+cpm_check_git_working_dir_is_clean(${baseDir} v0.0.0 nonemptygit_test)
+assert_falsy(nonemptygit_test)
+
+git_do("${baseDir}" add draft.txt)
+git_do("${baseDir}" commit -m "another change")
+message(STATUS "repo clean")
+cpm_check_git_working_dir_is_clean(${baseDir} v0.0.0 twocommit_test)
+assert_falsy(twocommit_test)
+
+file(REMOVE_RECURSE "${baseDir}")
--- a/test/unit/exclude_from_all.cmake
+++ b/test/unit/exclude_from_all.cmake
@@ -0,0 +1,35 @@
+include(CMakePackageConfigHelpers)
+include(${CPM_PATH}/testing.cmake)
+
+set(TEST_BUILD_DIR ${CMAKE_CURRENT_BINARY_DIR}/exclude_from_all)
+
+function(init_project EXCLUDE_FROM_ALL)
+  configure_package_config_file(
+    "${CMAKE_CURRENT_LIST_DIR}/broken_dependency/CMakeLists.txt.in"
+    "${CMAKE_CURRENT_LIST_DIR}/broken_dependency/CMakeLists.txt"
+    INSTALL_DESTINATION ${CMAKE_CURRENT_BINARY_DIR}/junk
+  )
+
+  execute_process(
+    COMMAND ${CMAKE_COMMAND} "-S${CMAKE_CURRENT_LIST_DIR}/broken_dependency" "-B${TEST_BUILD_DIR}"
+    RESULT_VARIABLE ret
+  )
+
+  assert_equal(${ret} "0")
+endfunction()
+
+function(build_project expected_success)
+  execute_process(COMMAND ${CMAKE_COMMAND} "--build" "${TEST_BUILD_DIR}" RESULT_VARIABLE ret)
+
+  if(expected_success)
+    assert_equal(${ret} 0)
+  else()
+    assert_not_equal(${ret} 0)
+  endif()
+endfunction()
+
+init_project(FALSE)
+build_project(FALSE)
+
+init_project(TRUE)
+build_project(TRUE)
--- a/test/unit/fetchcontent_dependency.cmake
+++ b/test/unit/fetchcontent_dependency.cmake
@@ -0,0 +1,38 @@
+cmake_minimum_required(VERSION 3.14 FATAL_ERROR)
+
+include(${CPM_PATH}/testing.cmake)
+include(CMakePackageConfigHelpers)
+
+set(CPM_SOURCE_CACHE_DIR "${CMAKE_CURRENT_BINARY_DIR}/CPM")
+set(TEST_BUILD_DIR ${CMAKE_CURRENT_BINARY_DIR}/fetchcontent_dependency)
+
+function(clear_cache)
+  message(STATUS "clearing CPM cache")
+  file(REMOVE_RECURSE ${CPM_SOURCE_CACHE_DIR})
+  assert_not_exists("${CPM_SOURCE_CACHE_DIR}")
+endfunction()
+
+function(update_cmake_lists)
+  configure_package_config_file(
+    "${CMAKE_CURRENT_LIST_DIR}/fetchcontent_dependency/CMakeLists.txt.in"
+    "${CMAKE_CURRENT_LIST_DIR}/fetchcontent_dependency/CMakeLists.txt"
+    INSTALL_DESTINATION ${CMAKE_CURRENT_BINARY_DIR}/junk
+  )
+endfunction()
+
+function(reset_test)
+  clear_cache()
+  file(REMOVE_RECURSE ${TEST_BUILD_DIR})
+  update_cmake_lists()
+endfunction()
+
+# Read CPM_SOURCE_CACHE from arguments
+
+reset_test()
+
+execute_process(
+  COMMAND ${CMAKE_COMMAND} "-S${CMAKE_CURRENT_LIST_DIR}/fetchcontent_dependency"
+          "-B${TEST_BUILD_DIR}" "-DCPM_SOURCE_CACHE=${CPM_SOURCE_CACHE_DIR}" RESULT_VARIABLE ret
+)
+
+assert_equal(${ret} "0")
--- a/test/unit/fetchcontent_dependency/.gitignore
+++ b/test/unit/fetchcontent_dependency/.gitignore
@@ -0,0 +1,2 @@
+/CMakeLists.txt
+/package-lock.cmake
--- a/test/unit/fetchcontent_dependency/CMakeLists.txt.in
+++ b/test/unit/fetchcontent_dependency/CMakeLists.txt.in
@@ -0,0 +1,38 @@
+# ~~~
+#    ┌────────────────────────┐
+#    │ FetchContentDependency │
+#    └─────┬────────────┬─────┘
+#          │1.          │3.
+#          │            │
+# ┌────────▼────┐   ┌───▼─────────┐
+# │ Dependency  ├───►  Fibonacci  │
+# └─────────────┘2. └─────────────┘
+#
+# 1. Add Project with CPMAddPackage
+# 2. Dependency will add Fibonacci with FetchContent
+# 3. Our project add Fibonacci with CPMAddPackage
+# ~~~
+
+cmake_minimum_required(VERSION 3.14 FATAL_ERROR)
+
+project(CPMTest_FetchContentDependency)
+
+# ---- Dependencies ----
+
+include(@CPM_PATH@/CPM.cmake)
+
+# 1 & 2 Dependency will add Fibonacci using FetchContent (1 & 2)
+CPMAddPackage(NAME Dependency SOURCE_DIR ${CMAKE_CURRENT_LIST_DIR}/dependency)
+
+# 3 Add again Fibonacci that have already been populated with FetchContent_MakeAvailable
+#
+# * This test should highlight the fact that cpm_add_subdirectory is always called, even when
+#   cpm_fetch_package isn't populating the dependency
+# * NO_CACHE YES highlight a bug introduced in 32b063eba5c754f833725ed4b9e5f352bc3ca959 where
+#   cpm_fetch_package was checking undefined ${lower_case_name}_POPULATED variable
+CPMAddPackage(
+  NAME Fibonacci
+  GIT_REPOSITORY https://github.com/cpm-cmake/testpack-fibonacci.git
+  VERSION 2.0
+  NO_CACHE YES
+)
--- a/test/unit/fetchcontent_dependency/dependency/CMakeLists.txt
+++ b/test/unit/fetchcontent_dependency/dependency/CMakeLists.txt
@@ -0,0 +1,15 @@
+cmake_minimum_required(VERSION 3.14 FATAL_ERROR)
+
+project(CPMTest_Dependency)
+
+# ---- Dependencies ----
+
+include(FetchContent)
+
+FetchContent_Declare(
+  Fibonacci
+  GIT_REPOSITORY https://github.com/cpm-cmake/testpack-fibonacci.git
+  GIT_TAG v2.0
+)
+
+FetchContent_MakeAvailable(Fibonacci)
--- a/test/unit/local_dependency/OptionsCMakeLists.txt.in
+++ b/test/unit/local_dependency/OptionsCMakeLists.txt.in
@@ -0,0 +1,35 @@
+cmake_minimum_required(VERSION 3.14 FATAL_ERROR)
+
+project(CPMTest)
+
+# ---- Options ----
+
+option(ENABLE_TEST_COVERAGE "Enable test coverage" OFF)
+
+# ---- Dependencies ----
+
+include(@CPM_PATH@/CPM.cmake)
+
+CPMAddPackage(
+  NAME Dependency
+  SOURCE_DIR ${CMAKE_CURRENT_LIST_DIR}/dependency
+  OPTIONS
+    "DEFINE_ALTERNATIVE_FUNCTION YES"
+    "LIST_ARGUMENT a\\\\;b\\\\;c"
+  EXCLUDE_FROM_ALL YES
+)
+
+# ---- Dependencies ----
+
+alternative_dependency_function()
+
+# ---- Check parameters ----
+
+include(@CPM_PATH@/testing.cmake)
+
+message("DEFINE_ALTERNATIVE_FUNCTION: ${DEFINE_ALTERNATIVE_FUNCTION}")
+
+# this option is overridden by CPM.cmake
+ASSERT_NOT_DEFINED(DEFINE_ALTERNATIVE_FUNCTION)
+# this option is leaked by the dependency
+ASSERT_EQUAL(${LEAKED_OPTION} "OFF")
--- a/test/unit/local_dependency/SubdirCMakeLists.txt.in
+++ b/test/unit/local_dependency/SubdirCMakeLists.txt.in
@@ -0,0 +1,17 @@
+cmake_minimum_required(VERSION 3.14 FATAL_ERROR)
+
+project(CPMTest)
+
+# ---- Dependencies ----
+
+include(@CPM_PATH@/CPM.cmake)
+
+CPMAddPackage(
+  NAME Dependency
+  SOURCE_DIR ${CMAKE_CURRENT_LIST_DIR}/dependency
+  SOURCE_SUBDIR inner
+)
+
+# ---- Call inner dependency method to validate correct addition of subdirectory ----
+
+inner_dependency_function()
--- a/test/unit/local_dependency/dependency/CMakeLists.txt
+++ b/test/unit/local_dependency/dependency/CMakeLists.txt
@@ -1,3 +1,20 @@
-function(dependency_function)
-  message("called external method")
-endfunction()
+cmake_minimum_required(VERSION 3.0 FATAL_ERROR)
+
+option(DEFINE_ALTERNATIVE_FUNCTION "define the alternative function" OFF)
+option(LEAKED_OPTION "this option will be leaked to the outer scope" OFF)
+
+if(NOT DEFINE_ALTERNATIVE_FUNCTION)
+  function(dependency_function)
+    message("called external method")
+  endfunction()
+else()
+
+  # check if list was passed correctly
+  if(NOT "${LIST_ARGUMENT}" STREQUAL "a;b;c")
+    message(FATAL_ERROR "list argument not properly passed to dependency: '${LIST_ARGUMENT}'")
+  endif()
+
+  function(alternative_dependency_function)
+    message("called alternative external method")
+  endfunction()
+endif()
--- a/test/unit/local_dependency/dependency/inner/CMakeLists.txt
+++ b/test/unit/local_dependency/dependency/inner/CMakeLists.txt
@@ -0,0 +1,3 @@
+function(inner_dependency_function)
+  message("called inner method")
+endfunction()
--- a/test/unit/modules.cmake
+++ b/test/unit/modules.cmake
@@ -11,7 +11,7 @@ function(init_project_with_dependency TEST_DEPENDENCY_NAME)
  )

  execute_process(
-    COMMAND ${CMAKE_COMMAND} "-H${CMAKE_CURRENT_LIST_DIR}/local_dependency" "-B${TEST_BUILD_DIR}"
+    COMMAND ${CMAKE_COMMAND} "-S${CMAKE_CURRENT_LIST_DIR}/local_dependency" "-B${TEST_BUILD_DIR}"
    RESULT_VARIABLE ret
  )

--- a/test/unit/options.cmake
+++ b/test/unit/options.cmake
@@ -0,0 +1,19 @@
+include(CMakePackageConfigHelpers)
+include(${CPM_PATH}/testing.cmake)
+
+set(TEST_BUILD_DIR ${CMAKE_CURRENT_BINARY_DIR}/source_dir)
+
+set(TEST_DEPENDENCY_NAME Dependency)
+
+configure_package_config_file(
+  "${CMAKE_CURRENT_LIST_DIR}/local_dependency/OptionsCMakeLists.txt.in"
+  "${CMAKE_CURRENT_LIST_DIR}/local_dependency/CMakeLists.txt"
+  INSTALL_DESTINATION ${CMAKE_CURRENT_BINARY_DIR}/junk
+)
+
+execute_process(
+  COMMAND ${CMAKE_COMMAND} "-S${CMAKE_CURRENT_LIST_DIR}/local_dependency" "-B${TEST_BUILD_DIR}"
+  RESULT_VARIABLE ret
+)
+
+assert_equal(${ret} "0")
--- a/test/unit/package-lock.cmake
+++ b/test/unit/package-lock.cmake
@@ -24,7 +24,7 @@ function(configure_with_declare DECLARE_DEPENDENCY)
  )

  execute_process(
-    COMMAND ${CMAKE_COMMAND} -H${CMAKE_CURRENT_LIST_DIR}/local_dependency -B${TEST_BUILD_DIR}
+    COMMAND ${CMAKE_COMMAND} -S${CMAKE_CURRENT_LIST_DIR}/local_dependency -B${TEST_BUILD_DIR}
            -DCPM_INCLUDE_ALL_IN_PACKAGE_LOCK=1 RESULT_VARIABLE ret
  )

--- a/test/unit/package-override.cmake
+++ b/test/unit/package-override.cmake
@@ -12,7 +12,7 @@ configure_package_config_file(
 )

 execute_process(
-  COMMAND ${CMAKE_COMMAND} -H${CMAKE_CURRENT_LIST_DIR}/local_dependency -B${TEST_BUILD_DIR}
+  COMMAND ${CMAKE_COMMAND} -S${CMAKE_CURRENT_LIST_DIR}/local_dependency -B${TEST_BUILD_DIR}
          -DCPM_Dependency_SOURCE=${CMAKE_CURRENT_LIST_DIR}/local_dependency/dependency
  RESULT_VARIABLE ret
 )
--- a/test/unit/package_name_and_ver_from_url.cmake
+++ b/test/unit/package_name_and_ver_from_url.cmake
@@ -0,0 +1,60 @@
+cmake_minimum_required(VERSION 3.14 FATAL_ERROR)
+
+include(${CPM_PATH}/CPM.cmake)
+include(${CPM_PATH}/testing.cmake)
+
+cpm_package_name_and_ver_from_url("https://example.com/coolpack-1.2.3.zip" name ver)
+assert_equal("coolpack" ${name})
+assert_equal("1.2.3" ${ver})
+
+cpm_package_name_and_ver_from_url("https://example.com/cool-pack-v1.3.tar.gz" name ver)
+assert_equal("cool-pack" ${name})
+assert_equal("1.3" ${ver})
+
+cpm_package_name_and_ver_from_url(
+  "https://subd.zip.com/download.php?Cool.Pack-v1.2.3rc0.tar" name ver
+)
+assert_equal("Cool.Pack" ${name})
+assert_equal("1.2.3rc0" ${ver})
+
+cpm_package_name_and_ver_from_url(
+  "http://evil-1.2.tar.gz.com/Plan9_1.2.3a.tar.bz2?download" name ver
+)
+assert_equal("Plan9" ${name})
+assert_equal("1.2.3a" ${ver})
+
+cpm_package_name_and_ver_from_url(
+  "http://evil-1.2.tar.gz.com/Plan_9-1.2.3a.tar.bz2?download" name ver
+)
+assert_equal("Plan_9" ${name})
+assert_equal("1.2.3a" ${ver})
+
+cpm_package_name_and_ver_from_url(
+  "http://evil-1.2.tar.gz.com/Plan-9_1.2.3a.tar.bz2?download" name ver
+)
+assert_equal("Plan-9" ${name})
+assert_equal("1.2.3a" ${ver})
+
+cpm_package_name_and_ver_from_url("https://sf.com/distrib/SFLib-0.999.4.tar.gz/download" name ver)
+assert_equal("SFLib" ${name})
+assert_equal("0.999.4" ${ver})
+
+cpm_package_name_and_ver_from_url("https://example.com/coolpack/v5.6.5rc44.zip" name ver)
+assert_not_defined(name)
+assert_equal("5.6.5rc44" ${ver})
+
+cpm_package_name_and_ver_from_url("evil-1.3.zip.com/coolpack/release999.000beta.ZIP" name ver)
+assert_not_defined(name)
+assert_equal("999.000beta" ${ver})
+
+cpm_package_name_and_ver_from_url("https://example.com/Foo55.tar.gz" name ver)
+assert_equal("Foo55" ${name})
+assert_not_defined(ver)
+
+cpm_package_name_and_ver_from_url("https://example.com/foo" name ver)
+assert_not_defined(name)
+assert_not_defined(ver)
+
+cpm_package_name_and_ver_from_url("example.zip.com/foo" name ver)
+assert_not_defined(name)
+assert_not_defined(ver)
--- a/test/unit/package_name_from_git_uri.cmake
+++ b/test/unit/package_name_from_git_uri.cmake
@@ -0,0 +1,28 @@
+cmake_minimum_required(VERSION 3.14 FATAL_ERROR)
+
+include(${CPM_PATH}/CPM.cmake)
+include(${CPM_PATH}/testing.cmake)
+
+cpm_package_name_from_git_uri("https://github.com/cpm-cmake/CPM.cmake.git" name)
+assert_equal("CPM.cmake" ${name})
+
+cpm_package_name_from_git_uri("ssh://user@host.xz:123/path/to/pkg.git/" name)
+assert_equal("pkg" ${name})
+
+cpm_package_name_from_git_uri("git://host.xz/path/to/pkg.git" name)
+assert_equal("pkg" ${name})
+
+cpm_package_name_from_git_uri("git@host.xz:cool-pkg.git" name)
+assert_equal("cool-pkg" ${name})
+
+cpm_package_name_from_git_uri("file:///path/to/pkg33.git" name)
+assert_equal("pkg33" ${name})
+
+cpm_package_name_from_git_uri("../local-repo/.git" name)
+assert_equal("local-repo" ${name})
+
+cpm_package_name_from_git_uri("asdf" name)
+assert_not_defined(name)
+
+cpm_package_name_from_git_uri("/something.git/stuff" name)
+assert_not_defined(name)
--- a/test/unit/parse_add_package_single_arg.cmake
+++ b/test/unit/parse_add_package_single_arg.cmake
@@ -0,0 +1,71 @@
+cmake_minimum_required(VERSION 3.14 FATAL_ERROR)
+
+include(${CPM_PATH}/CPM.cmake)
+include(${CPM_PATH}/testing.cmake)
+
+cpm_parse_add_package_single_arg("gh:cpm-cmake/CPM.cmake" args)
+assert_equal("GITHUB_REPOSITORY;cpm-cmake/CPM.cmake" "${args}")
+
+cpm_parse_add_package_single_arg("gh:cpm-cmake/CPM.cmake@1.2.3" args)
+assert_equal("GITHUB_REPOSITORY;cpm-cmake/CPM.cmake;VERSION;1.2.3" "${args}")
+
+cpm_parse_add_package_single_arg("gh:cpm-cmake/CPM.cmake#master" args)
+assert_equal("GITHUB_REPOSITORY;cpm-cmake/CPM.cmake;GIT_TAG;master" "${args}")
+
+cpm_parse_add_package_single_arg("gh:cpm-cmake/CPM.cmake@0.20.3#asdf" args)
+assert_equal("GITHUB_REPOSITORY;cpm-cmake/CPM.cmake;VERSION;0.20.3;GIT_TAG;asdf" "${args}")
+
+cpm_parse_add_package_single_arg("gh:a/b#c@d" args)
+assert_equal("GITHUB_REPOSITORY;a/b;GIT_TAG;c;VERSION;d" "${args}")
+
+cpm_parse_add_package_single_arg("gh:foo#c@d" args)
+assert_equal("GITHUB_REPOSITORY;foo;GIT_TAG;c;VERSION;d" "${args}")
+
+cpm_parse_add_package_single_arg("gh:Foo@5" args)
+assert_equal("GITHUB_REPOSITORY;Foo;VERSION;5" "${args}")
+
+cpm_parse_add_package_single_arg("gl:foo/bar" args)
+assert_equal("GITLAB_REPOSITORY;foo/bar" "${args}")
+
+cpm_parse_add_package_single_arg("gl:foo/Bar" args)
+assert_equal("GITLAB_REPOSITORY;foo/Bar" "${args}")
+
+cpm_parse_add_package_single_arg("bb:foo/bar" args)
+assert_equal("BITBUCKET_REPOSITORY;foo/bar" "${args}")
+
+cpm_parse_add_package_single_arg("bb:foo/Bar" args)
+assert_equal("BITBUCKET_REPOSITORY;foo/Bar" "${args}")
+
+cpm_parse_add_package_single_arg("https://github.com/cpm-cmake/CPM.cmake.git@0.30.5" args)
+assert_equal("GIT_REPOSITORY;https://github.com/cpm-cmake/CPM.cmake.git;VERSION;0.30.5" "${args}")
+
+cpm_parse_add_package_single_arg("git@host.xz:user/pkg.git@0.1.2" args)
+assert_equal("GIT_REPOSITORY;git@host.xz:user/pkg.git;VERSION;0.1.2" "${args}")
+
+cpm_parse_add_package_single_arg("git@host.xz:user/pkg.git@0.1.2#rc" args)
+assert_equal("GIT_REPOSITORY;git@host.xz:user/pkg.git;VERSION;0.1.2;GIT_TAG;rc" "${args}")
+
+cpm_parse_add_package_single_arg(
+  "ssh://user@host.xz:123/path/to/pkg.git#fragment@1.2.3#branch" args
+)
+assert_equal(
+  "GIT_REPOSITORY;ssh://user@host.xz:123/path/to/pkg.git#fragment;VERSION;1.2.3;GIT_TAG;branch"
+  "${args}"
+)
+
+cpm_parse_add_package_single_arg("https://example.org/foo.tar.gz" args)
+assert_equal("URL;https://example.org/foo.tar.gz" "${args}")
+
+cpm_parse_add_package_single_arg("https://example.org/foo.tar.gz#baadf00d@1.2.0" args)
+assert_equal("URL;https://example.org/foo.tar.gz;URL_HASH;baadf00d;VERSION;1.2.0" "${args}")
+
+cpm_parse_add_package_single_arg("https://example.org/foo.tar.gz#MD5=baadf00d" args)
+assert_equal("URL;https://example.org/foo.tar.gz;URL_HASH;MD5=baadf00d" "${args}")
+
+cpm_parse_add_package_single_arg("https://example.org/Foo.zip#SHA3_512=1337" args)
+assert_equal("URL;https://example.org/Foo.zip;URL_HASH;SHA3_512=1337" "${args}")
+
+cpm_parse_add_package_single_arg("ftp://user:pass@server/pathname.zip#fragment#0ddb411@0" args)
+assert_equal(
+  "URL;ftp://user:pass@server/pathname.zip#fragment;URL_HASH;0ddb411;VERSION;0" "${args}"
+)
--- a/test/unit/remote_dependency/CMakeLists.txt.in
+++ b/test/unit/remote_dependency/CMakeLists.txt.in
@@ -12,7 +12,7 @@ include(@CPM_PATH@/CPM.cmake)

 CPMAddPackage(
  NAME fibonacci
-  GIT_REPOSITORY https://github.com/TheLartians/Fibonacci.git
+  GIT_REPOSITORY https://github.com/cpm-cmake/testpack-fibonacci.git
  VERSION @FIBONACCI_VERSION@
  @FIBONACCI_PACKAGE_ARGS@
 )
--- a/test/unit/source_dir.cmake
+++ b/test/unit/source_dir.cmake
@@ -12,7 +12,7 @@ configure_package_config_file(
 )

 execute_process(
-  COMMAND ${CMAKE_COMMAND} "-H${CMAKE_CURRENT_LIST_DIR}/local_dependency" "-B${TEST_BUILD_DIR}"
+  COMMAND ${CMAKE_COMMAND} "-S${CMAKE_CURRENT_LIST_DIR}/local_dependency" "-B${TEST_BUILD_DIR}"
  RESULT_VARIABLE ret
 )

--- a/test/unit/subdir.cmake
+++ b/test/unit/subdir.cmake
@@ -0,0 +1,17 @@
+include(CMakePackageConfigHelpers)
+include(${CPM_PATH}/testing.cmake)
+
+set(TEST_BUILD_DIR ${CMAKE_CURRENT_BINARY_DIR}/source_dir)
+
+configure_package_config_file(
+  "${CMAKE_CURRENT_LIST_DIR}/local_dependency/SubdirCMakeLists.txt.in"
+  "${CMAKE_CURRENT_LIST_DIR}/local_dependency/CMakeLists.txt"
+  INSTALL_DESTINATION ${CMAKE_CURRENT_BINARY_DIR}/junk
+)
+
+execute_process(
+  COMMAND ${CMAKE_COMMAND} "-S${CMAKE_CURRENT_LIST_DIR}/local_dependency" "-B${TEST_BUILD_DIR}"
+  RESULT_VARIABLE ret
+)
+
+assert_equal(${ret} "0")
Author	SHA1	Message	Date
Lars Melchior	a575ab57b7	Allow overriding FetchContent using CPM (#352 ) * Override FetchContent paramers, fixes #281 * add check to verify that dependency is cached * update test comment * rename test file and class * update test indentation	2022-05-16 21:28:44 +02:00
Lava Block	ca421f0e0c	Add liblava to "Built with CPM.cmake" (#346 )	2022-04-10 18:59:05 +00:00
Robert Maynard	005f202655	Add per package CPM_DOWNLOAD controls (#336 ) * Add per project CPM_DOWNLOAD controls Introduces support for `CPM_<PACKAGE>_DOWNLOAD` variable ( and env ) which allows finer grained control. * Address PR feedback on API names	2022-02-11 19:37:32 +01:00
Lars Bilke	865648e7bd	Fixed typos in comments	2022-02-09 11:25:26 +00:00
Borislav Stanimirov	33bdbae902	List of contributors (#340 ) * Updated copyright years. Same copyright holders in code and LICENSE * Contributor list. Order is from contributors gh page	2022-02-07 20:21:43 +01:00
Tobias Hellmann	9d3fad01d4	Fix broken example for nlohmann/json (#338 )	2022-01-27 22:59:28 +00:00
Robert Maynard	11c7ec8afa	Use CMake 3.14+ documented way to pass the source dir `-S`. (#337 ) The `-H<src_dir>` was never officially documented by CMake	2022-01-27 23:45:35 +01:00
Robert Maynard	4f7af69925	CMake 3.22 allows set/set(CACHE) to behave the same as set(X)/option(x) (#335 ) By enabling CMP0126 we tell CMake that when constructing a CACHE variable with the same name as a local variable to not unset the local variable. By enabling CMPO126 it makes sure that CPM behavior around `OPTION` is consistent if the option is created with `set(CACHE)` or with `option`.	2022-01-27 23:36:12 +01:00
Borislav Stanimirov	c58e98a0a0	Initial version of integration tests (#330 ) * Initial commit for integration tests. Experimental. Playing with potential syntax * Some experimental code to setup tests * Piecewise building of CMakeLists * First check * Alternative approach. Using ruby's test/unit * Parse CMakeCache. Separate lib * First integration test * Latest Format.cmake. Passing style * Allow user-provided integration test dir. Allow reuse * Separate class with utils for cache (no longer pure Hash) * Allow running of tests from any dir * Add integration tests to CI * Use an in-source integration test directory * Allow relative integration test dir from env * Custom assertion for a success of CommandResult * Windows-latest-latest * Enrich CMakeCache class with more CPM data * Added test for CPM-specific CMakeCache values * Style * Style * test_update_single_package * WiP for source cache test * Small source_cache test * Style * Moved env clean to cleanup to make setup methods simpler (not require super) * WiP for integration test documentation * WiP for integration test documentation * Project file creation tweaks * Split docs into multiple files. Complete tutorial. Reference. * Tips * Typo * Setup Ruby inistead of requiring windows-2022 * Revert "Setup Ruby inistead of requiring windows-2022" This reverts commit `8aa2732145`.	2022-01-19 00:18:41 +01:00
Lars Melchior	a27c66a3ea	Remove badges (#327 ) As we now use the unified CI workflow (#326), it seems we unfortunately [can't have separate badges for each OS](https://github.community/t/separate-workflow-badges-when-using-matrix-testing-possible/16708). As the display of the badges was to reference the cross-platform nature of the project, imo it can be replaced by adding a reference in the introduction instead.	2022-01-13 03:44:07 +02:00
Vinpasso	5cb7398a24	[Example] Disable JSON tests being included in ctest (#329 ) * Disable JSON tests being included in ctest If `CPMAddPackage` includes json without setting JSON_BuildTests off first then the target's ctest will include lots of json's tests. * Bump example JSON version to avoid JSON tests	2022-01-12 20:29:59 +01:00
Borislav Stanimirov	262f1e0602	Unified GitHub workflow for tests on major operating systems (#326 )	2022-01-11 21:16:04 +01:00
Dan Raviv	7cbef3efc8	Fix comment out-of-sync with modified code (#321 )	2022-01-06 08:46:54 +02:00
DNKpp	939123d1b4	Fix <package>_SOURCE_DIR and _BINARY_DIR handling when caching is active (#314 ) * fix: use CACHE variables instead relying on FetchContents mechanism * apply cmake-format Signed-off-by: DNKpp <DNKpp2011@gmail.com>	2021-12-30 16:20:37 +01:00
Lars Melchior	22078d5e0d	add quotes around module arguments (#313 )	2021-12-30 15:20:16 +02:00
Pavel Sokolov	96c268827b	Pass DOWNLOAD_ONLY flag when CPM_pkg_SOURCE is set. (#308 ) https://github.com/cpm-cmake/CPM.cmake/issues/307	2021-12-15 21:23:18 +01:00
Lars Melchior	dad37fbe4e	Change example ordering and add note on boost (#305 ) Reorders examples from simple to more complex. Also adds note on using `CPM_SOURCE_CACHE` for boost.	2021-12-12 15:09:50 +01:00
Lars Melchior	fed5f8e8a2	use official boost release (#304 )	2021-12-05 16:08:47 +01:00
Lars Melchior	d65613e860	add warning when not using release version of CPM.cmake (#303 )	2021-12-05 16:08:02 +01:00
Lars Melchior	718ea71759	Allow passing lists in the options (#302 ) * allow list options by passing option parameter as string, not value * add test * remove debug message * run formatter	2021-12-05 16:07:20 +01:00
Lars Melchior	6491382204	Remove travis badge from readme (#289 ) Follow up on #283 to remove the now obsolete travis badge.	2021-09-29 13:48:40 +03:00
pgorgon-hem	634800c619	Added directory inside cache to make it shown more friendly in CLion (#268 ) * Added directory inside cache to make it shown more friendly in CLion * Changed hash generation to omit collision with old cache scheme. Removed moving old directory for compatibility reason. * Added CPM_USE_NAMED_CACHE_DIRECTORIES option * Fixed formatting * Added description of CPM_USE_NAMED_CACHE_DIRECTORIES into README.md Co-authored-by: Paweł Gorgoń <pgorgon@hem-e.com>	2021-09-15 21:39:31 +02:00
Andrea Barbadoro	f552da96bd	Detecting when the cache is dirty (#284 ) * Check that the cache working directory is clean * cpm_check_working_dir_is_clean for non git repo will not terminate cmake * sileneced check for git repo, in case of error * style(CPM.cmake): fixed indentation for ERROR_QUIET * refactor(CPM.cmake): added logic to handle a cache folder inside a (not correlated) git repo this is accomplished by checking if we are in the directory where .git lives * style(CPM.cmake): stray tab to spaces * test(dirty-cache-check): added unit test to check cpm_check_working_dir_is_clean the test creates a file in a folder and then uses git to create a repo in that folder, to check various conditions * Update test/unit/dirty-cache-check.cmake added user.name and user.email to comply with test machine where git is not completely configured Co-authored-by: Lars Melchior <TheLartians@users.noreply.github.com> * feat(cpm_check_working_dir_is_clean): now it takes a git tag (works with hashes too) to check for uncommitted and commited changes * refactor(cpm_check_working_dir_is_clean): early return for the most common case of uncommited changes in a repo * refactor(cpm_check_git_working_dir_is_clean): removed edgecase detection (a non-git folder in an unrelated git repo) now the contract is that com_check_git_working_dir_is_clean is given the base folder of a git repo Co-authored-by: Andrew Gribble <ag131012@renishaw.com> Co-authored-by: Lars Melchior <TheLartians@users.noreply.github.com>	2021-09-15 11:38:49 +02:00
Olivier Le Doeuff	ea6a8eb895	Fix CPMAddPackage when FetchContent_MakeAvailable already added package (#288 ) Add fetchcontent_dependency unit test: * This test should highlight the fact that cpm_add_subdirectory is always called, even when cpm_fetch_package isn't populating the dependency * NO_CACHE YES highlight a bug introduced in `32b063eba5` where cpm_fetch_package was checking undefined ${lower_case_name}_POPULATED variable https://github.com/cpm-cmake/CPM.cmake/issues/287	2021-08-29 22:02:18 +02:00
MixusMinimax	a5c22bf6e8	use quotes for CPM_FILE when creating FIND.cmake (#286 )	2021-08-29 22:01:50 +02:00
Lars Melchior	c5cb85b2f1	Build examples in CI using GitHub (#283 ) * build examples in CI using github * update cxxopts style	2021-08-29 20:27:10 +02:00
pgorgon-hem	91585e3864	Added support for bitbucket repositories (#256 ) * Added support for bitbucket repositories: * added variable BITBUCKET_REPOSITORY * added short syntax in form "bb:user/repo" * added description of that to readme.md * Added test for bitbucket short syntax * Used elseif syntax in handling of git services (github, gitlab, bitbucket). * Added HEMRND/TestingFramework example located on bitbucket.org * Reformatted CMakeLists.txt in TestingFramework example * Bumped version of TestingFramework. It supports older version of c++ standard. Co-authored-by: Paweł Gorgoń <pgorgon@hem-e.com>	2021-06-08 19:15:40 +02:00
Stuart Dootson	9675d46517	Expand relative download directory to prevent unnecessary download (#267 ) * Expand relative download directory to prevent unnecessary download If `CMAKE_SOURCE_CACHE` (and thus `download_directory`) is set to a relative path, the condition `if(EXISTS ${download_directory})` will fail even if the required directory exists. Expanding the variable `download_directory` to an absolute path before the test will rectify this, preventing unnecessary downloads of the sources. * iFixed up formatting Co-authored-by: Stuart Dootson <stuart.dootson@rolls-royce.com>	2021-06-08 19:12:20 +02:00
Lars Melchior	7078e8286a	Remove branch name references from README (#265 ) As noted in #263, setting `GIT_TAG` to a branch name results in unexpected and unreproducible build behaviour, as it does not automatically update when the `HEAD` changes.	2021-06-08 15:55:03 +03:00
Lars Melchior	6a0277f16e	Update CMake to 3.20 for integration tests (#264 ) This allows us to use more recent projects in the examples	2021-06-08 15:27:31 +03:00
Lars Melchior	4502bf1e04	Forward exclude and subdir options when using local package override (#261 ) * forward exclude and subdir options when using local package override. fixes #260. * run cmake format * add SOURCE_SUBDIR parameter to cmake-format	2021-06-08 15:26:39 +03:00
Clare Macrae	dd3ba9792c	Fix typo in README - omit -> emit (#258 )	2021-06-02 09:36:29 +03:00
Lars Melchior	de5551e42c	Update boost-cmake (#252 ) * update boost-cmake * run cmake-format	2021-05-18 16:29:52 +03:00
Paul Taylor	7644c3a40f	Respect `FETCHCONTENT_BASE_DIR` if set by a user (#244 ) * Respect `FETCHCONTENT_BASE_DIR` if set by a user * Use a single `CPM_FETCHCONTENT_BASE_DIR` var	2021-04-16 17:27:51 +02:00
Lars Melchior	310efb9b17	Update more examples from the readme (#241 ) * update examples from the readme * add explainations to the examples	2021-03-26 18:31:35 +02:00
Lars Melchior	4fad2eac0a	remove option consistency check (#240 )	2021-03-25 19:24:44 +02:00
flagarde	ee08119642	Scope package options to avoid changing the local scope (#235 ) * Fix #222 * Fix #222 * move policy change and local options to cpm_add_subdirectory * change default policy as well see https://gitlab.kitware.com/cmake/cmake/-/issues/20312 * add test * update check to not use the NOT operator (interestingly it works as expected locally) * simplify test by not using options * check options in tests Co-authored-by: Lars Melchior <TheLartians@users.noreply.github.com>	2021-03-25 15:59:34 +01:00
Lars Melchior	259f1be8e2	update cxxopts and add reasonable options (#239 )	2021-03-25 14:20:06 +02:00
Lars Melchior	32b063eba5	Fix support for source subdirectories (#238 ) * add support for source subdirectories * style fixes * remove debug log * grammar fix in comment	2021-03-25 10:42:51 +01:00
Lars Melchior	d64d816585	Make CPMFindPackage less prominent in the Readme (#236 ) Giving `CPMFindPackage` a less prominent position, as in almost all cases, `CPMAddPackage` should be preferred. Following a related discussion in #222.	2021-03-22 12:37:11 +01:00
Lars Melchior	8e8dcc9a8d	moved test repostitory to CPM.cmake namespace (#228 )	2021-03-04 11:01:01 +02:00
Lars Melchior	8afc2af4f9	update more examples to use shorthand syntax (#223 ) * update more examples to use shorthand syntax * revert google-benchmark as tests require googletest to be installed * update comments * always quote single-arguments * undo accidental deletion	2021-02-25 09:53:28 +02:00
Borislav Stanimirov	a3d1048ad6	Infer package name and version from URL (#220 ) * Function to extract name and version from url. Some tests * Rewrite. Previous version was not safe enough. More tests * Allow underscore as a name-version separator (<name>_<ver>) * CPMAddPackage can infer name and version from url * Allow URL parse from single arg and uncomment tests * Info about shorthand syntax in README * Fix style * Fixed typo Co-authored-by: Lars Melchior <TheLartians@users.noreply.github.com> * Explicit hash algorithm in shorthand URL example. Also added tests which include a hash algorithm provided We can't document a default until it's confirmed here: https://gitlab.kitware.com/cmake/cmake/-/issues/21859 Co-authored-by: Lars Melchior <TheLartians@users.noreply.github.com>	2021-02-23 20:15:45 +01:00
Lars Melchior	492e762591	update examples to use new syntax where possible (#218 )	2021-02-23 08:14:32 +02:00
Borislav Stanimirov	3f6cbe7383	Single-argument shorthand syntax for CPMAddPackage (#207 ) * Added quotes in equality checks so lists can be compared * Function to parse argument of CPMAddPackage in case a single one was provided * Error on URL type in CPMAddPackage single-arg * Fixed format * Support single argument syntax of CPMAddPackage * Documenting and showcasing the new shorthand syntax of CPMAddPackage * Auto EXCLUDE_FROM_ALL for the shorthand syntax * Fixed accidental paste of TOLOWER * Document why some test cases are commented out Co-authored-by: Lars Melchior <TheLartians@users.noreply.github.com> * Update README.md Co-authored-by: Lars Melchior <TheLartians@users.noreply.github.com> * Removed GitHub as the default package shorthand provider Co-authored-by: Lars Melchior <TheLartians@users.noreply.github.com>	2021-02-22 21:12:06 +01:00
Borislav Stanimirov	4aadac1972	Improved regex match in cpm_package_name_from_git_uri (#206 )	2021-02-19 09:45:04 +01:00
Borislav Stanimirov	4cbf443363	If a name isn't provided, try to infer it from the git repo (#202 ) * Added assert_not_defined check * Function to get package name form git uri and tests * Autofix format * If name is not provided, try to infer it from the git repo * Unset result of cpm_package_name_from_git_uri if there is no match - Also reordered tests to ensure that the result is actually unset when needed * Removed trailing spaces in README * Updated the main example with the new minimal syntax * Well... autofix format again * Update error message for missing name to reflect the possible auto-infer step * Autofix format... yet again :)	2021-02-17 12:41:25 +01:00
Borislav Stanimirov	2744b87f07	FATAL_ERROR if no NAME is provided (#201 ) * FATAL_ERROR if no NAME is provided * Fixed format	2021-02-16 14:54:31 +00:00
Lars Melchior	fd539b8ff3	Add dependencies using EXCLUDE_FROM_ALL flag (#198 ) * add dependencies using EXCLUDE_FROM_ALL flag * respect DOWNLOAD_ONLY flag * set EXCLUDE_FROM_ALL as an optional flag * use one value arg for consistency * fix argument passing * add unit test * update cmake-format	2021-02-16 10:26:16 +00:00