[cpr] added find_package for cpr on install (#3185)

* added find_package for cpr on install

How to use:
find_package ( CPR REQUIRED )
if ( CPR_FOUND )
message ( STATUS "CPR_INCLUDE_DIRS = ${CPR_INCLUDE_DIRS}" )
message ( STATUS "CPR_LIBRARIES = ${CPR_LIBRARIES}" )
include_directories ( ${CPR_INCLUDE_DIRS} )
endif ( CPR_FOUND )

* [cpr] Provide config and targets files

ports/cpr/001-cpr-config.patch

@@ -0,0 +1,94 @@
+diff --git a/cpr/CMakeLists.txt b/cpr/CMakeLists.txt
+index a6db5bd..90bec48 100644
+--- a/cpr/CMakeLists.txt
++++ b/cpr/CMakeLists.txt
+@@ -1,47 +1,46 @@
+-message(STATUS "Using CURL_INCLUDE_DIRS: ${CURL_INCLUDE_DIRS}.")
+-include_directories(
+-    ${CPR_INCLUDE_DIRS}
+-    ${CURL_INCLUDE_DIRS})
+-
+ add_library(${CPR_LIBRARIES}
++  auth.cpp
++  cookies.cpp
++  cprtypes.cpp
++  digest.cpp
++  error.cpp
++  multipart.cpp
++  parameters.cpp
++  payload.cpp
++  proxies.cpp
++  session.cpp
++  timeout.cpp
++  util.cpp
++  ssl_options.cpp
++)
++
++target_link_libraries( ${CPR_LIBRARIES}
++  PUBLIC ${CURL_LIBRARIES}
++)
++
++target_include_directories(${CPR_LIBRARIES}
++  PUBLIC 
++    $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/../include>
++    $<INSTALL_INTERFACE:include>
++  PRIVATE
++    $<BUILD_INTERFACE:${CURL_INCLUDE_DIRS}>
++)
++
+ 
+-    # Source files
+-    auth.cpp
+-    cookies.cpp
+-    cprtypes.cpp
+-    digest.cpp
+-    error.cpp
+-    multipart.cpp
+-    parameters.cpp
+-    payload.cpp
+-    proxies.cpp
+-    session.cpp
+-    timeout.cpp
+-    util.cpp
+-    ssl_options.cpp
++set(TARGETS_EXPORT_NAME "${PROJECT_NAME}Targets")
++install(
++  TARGETS ${CPR_LIBRARIES}
++  EXPORT ${TARGETS_EXPORT_NAME}
++  RUNTIME DESTINATION bin
++  LIBRARY DESTINATION lib
++  ARCHIVE DESTINATION lib
++)
+ 
+-    # Header files (useful in IDEs)
+-    "${CPR_INCLUDE_DIRS}/cpr/api.h"
+-    "${CPR_INCLUDE_DIRS}/cpr/auth.h"
+-    "${CPR_INCLUDE_DIRS}/cpr/body.h"
+-    "${CPR_INCLUDE_DIRS}/cpr/cookies.h"
+-    "${CPR_INCLUDE_DIRS}/cpr/cpr.h"
+-    "${CPR_INCLUDE_DIRS}/cpr/cprtypes.h"
+-    "${CPR_INCLUDE_DIRS}/cpr/curlholder.h"
+-    "${CPR_INCLUDE_DIRS}/cpr/defines.h"
+-    "${CPR_INCLUDE_DIRS}/cpr/digest.h"
+-    "${CPR_INCLUDE_DIRS}/cpr/error.h"
+-    "${CPR_INCLUDE_DIRS}/cpr/max_redirects.h"
+-    "${CPR_INCLUDE_DIRS}/cpr/multipart.h"
+-    "${CPR_INCLUDE_DIRS}/cpr/parameters.h"
+-    "${CPR_INCLUDE_DIRS}/cpr/payload.h"
+-    "${CPR_INCLUDE_DIRS}/cpr/proxies.h"
+-    "${CPR_INCLUDE_DIRS}/cpr/response.h"
+-    "${CPR_INCLUDE_DIRS}/cpr/session.h"
+-    "${CPR_INCLUDE_DIRS}/cpr/timeout.h"
+-    "${CPR_INCLUDE_DIRS}/cpr/util.h"
+-    "${CPR_INCLUDE_DIRS}/cpr/ssl_options.h")
++install(
++  EXPORT ${TARGETS_EXPORT_NAME} 
++  DESTINATION "${CMAKE_INSTALL_LIBDIR}/cmake/${PROJECT_NAME}"
++)
+ 
+-message(STATUS "Using CURL_LIBRARIES: ${CURL_LIBRARIES}.")
+-target_link_libraries(${CPR_LIBRARIES}
+-    ${CURL_LIBRARIES})
++if (NOT DISABLE_INSTALL_HEADERS)
++  install(DIRECTORY ${CPR_INCLUDE_DIRS}/cpr DESTINATION include)
++endif()

ports/cpr/CONTROL

@@ -1,4 +1,4 @@
 Source: cpr
-Version: 1.3.0-4
+Version: 1.3.0-6
 Description: C++ Requests is a simple wrapper around libcurl inspired by the excellent Python Requests project.
 Build-Depends: curl[core]

ports/cpr/cprConfig.cmake

@@ -0,0 +1,27 @@
+####### Expanded from @PACKAGE_INIT@ by configure_package_config_file() #######
+####### Any changes to this file will be overwritten by the next CMake run ####
+####### The input file was Config.cmake.in                            ########
+
+get_filename_component(PACKAGE_PREFIX_DIR "${CMAKE_CURRENT_LIST_DIR}/../../" ABSOLUTE)
+
+macro(set_and_check _var _file)
+  set(${_var} "${_file}")
+  if(NOT EXISTS "${_file}")
+    message(FATAL_ERROR "File or directory ${_file} referenced by variable ${_var} does not exist !")
+  endif()
+endmacro()
+
+macro(check_required_components _NAME)
+  foreach(comp ${${_NAME}_FIND_COMPONENTS})
+    if(NOT ${_NAME}_${comp}_FOUND)
+      if(${_NAME}_FIND_REQUIRED_${comp})
+        set(${_NAME}_FOUND FALSE)
+      endif()
+    endif()
+  endforeach()
+endmacro()
+
+####################################################################################
+
+include("${CMAKE_CURRENT_LIST_DIR}/cprTargets.cmake")
+check_required_components("cpr")

ports/cpr/portfile.cmake

@@ -8,7 +8,8 @@ vcpkg_from_github(
     REF 1.3.0
     SHA512 fd08f8a592a5e1fb8dc93158a4850b81575983c08527fb415f65bd9284f93c804c8680d16c548744583cd26b9353a7d4838269cfc59ccb6003da8941f620c273
     HEAD_REF master
-    PATCHES enable-install.patch
+    PATCHES
+        001-cpr-config.patch
 )
 
 vcpkg_configure_cmake(
@@ -23,8 +24,13 @@ vcpkg_configure_cmake(
 
 vcpkg_install_cmake()
 
+file(INSTALL ${CMAKE_CURRENT_LIST_DIR}/cprConfig.cmake DESTINATION ${CURRENT_PACKAGES_DIR}/lib/cmake/cpr)
+vcpkg_fixup_cmake_targets(CONFIG_PATH lib/cmake/cpr)
+
 vcpkg_copy_pdbs()
 
+file(REMOVE_RECURSE ${CURRENT_PACKAGES_DIR}/debug/include)
+
 # Handle copyright
 file(COPY ${SOURCE_PATH}/LICENSE DESTINATION ${CURRENT_PACKAGES_DIR}/share/cpr)
 file(RENAME ${CURRENT_PACKAGES_DIR}/share/cpr/LICENSE ${CURRENT_PACKAGES_DIR}/share/cpr/copyright)