[vcpkg] Add support for muslc, static crt linkage, and forcing the system binaries for cmake and ninja

scripts/bootstrap.sh

@@ -1,12 +1,23 @@
 #!/bin/sh
 
 vcpkgDisableMetrics="OFF"
+vcpkgUseSystem=false
 for var in "$@"
 do
-    if [ "$var" = "-disableMetrics" ]; then
+    if [ "$var" = "-disableMetrics" -o "$var" = "--disableMetrics" ]; then
         vcpkgDisableMetrics="ON"
+    elif [ "$var" = "-useSystemBinaries" -o "$var" = "--useSystemBinaries" ]; then
+        vcpkgUseSystem=true
+    elif [ "$var" = "-help" -o "$var" = "--help" ]; then
+        echo "Usage: ./bootstrap-vcpkg.sh [options]"
+        echo
+        echo "Options:"
+        echo "    -help                Display usage help"
+        echo "    -disableMetrics      Do not build metrics reporting into the executable"
+        echo "    -useSystemBinaries   Force use of the system utilities for building vcpkg"
+        exit 1
     else
-        echo "Unknown argument $var"
+        echo "Unknown argument $var. Use '-help' for help."
         exit 1
     fi
 done
@@ -191,13 +202,13 @@ selectCXX()
     if [ "$gccversion" -lt "6" ]; then
         echo "CXX ($CXX) is too old; please install a newer compiler such as g++-7."
         echo "On Ubuntu try the following:"
-        echo "sudo add-apt-repository ppa:ubuntu-toolchain-r/test -y"
+        echo "  sudo add-apt-repository ppa:ubuntu-toolchain-r/test -y"
-        echo "sudo apt-get update -y"
+        echo "  sudo apt-get update -y"
-        echo "sudo apt-get install g++-7 -y"
+        echo "  sudo apt-get install g++-7 -y"
         echo "On CentOS try the following:"
-        echo "sudo yum install centos-release-scl"
+        echo "  sudo yum install centos-release-scl"
-        echo "sudo yum install devtoolset-7"
+        echo "  sudo yum install devtoolset-7"
-        echo "scl enable devtoolset-7 bash"
+        echo "  scl enable devtoolset-7 bash"
         return 1
     fi
 
@@ -206,8 +217,14 @@ selectCXX()
 
 # Preparation
 UNAME="$(uname)"
-fetchTool "cmake" "$UNAME" cmakeExe || exit 1
+
-fetchTool "ninja" "$UNAME" ninjaExe || exit 1
+if $vcpkgUseSystem; then
+    cmakeExe="cmake"
+    ninjaExe="ninja"
+else
+    fetchTool "cmake" "$UNAME" cmakeExe || exit 1
+    fetchTool "ninja" "$UNAME" ninjaExe || exit 1
+fi
 selectCXX CXX || exit 1
 
 # Do the build

scripts/toolchains/linux.cmake

@@ -16,5 +16,9 @@ if(NOT _CMAKE_IN_TRY_COMPILE)
 
     string(APPEND CMAKE_SHARED_LINKER_FLAGS_INIT " ${VCPKG_LINKER_FLAGS} ")
     string(APPEND CMAKE_EXE_LINKER_FLAGS_INIT " ${VCPKG_LINKER_FLAGS} ")
+    if(VCPKG_CRT_LINKAGE STREQUAL "static")
+        string(APPEND CMAKE_SHARED_LINKER_FLAGS_INIT "-static ")
+        string(APPEND CMAKE_EXE_LINKER_FLAGS_INIT "-static ")
+    endif()
 endif()
 endif()

toolsrc/src/vcpkg.cpp

@@ -171,8 +171,10 @@ static void inner(const VcpkgCmdArguments& args)
             default_triplet = Triplet::from_canonical_name("x64-osx");
 #elif defined(__FreeBSD__)
             default_triplet = Triplet::from_canonical_name("x64-freebsd");
-#else
+#elif defined(__GLIBC__)
             default_triplet = Triplet::from_canonical_name("x64-linux");
+#else
+            default_triplet = Triplet::from_canonical_name("x64-linux-musl");
 #endif
         }
     }

toolsrc/src/vcpkg/tools.cpp

@@ -253,6 +253,11 @@ namespace vcpkg
 
         static PathAndVersion get_path(const VcpkgPaths& paths)
         {
+            if (System::get_environment_variable("VCPKG_FORCE_SYSTEM_BINARIES").has_value())
+            {
+                return {"cmake", "0"};
+            }
+
             std::vector<fs::path> candidate_paths;
 #if defined(_WIN32) || defined(__APPLE__) || defined(__linux__)
             static const ToolData TOOL_DATA = parse_tool_data_from_xml(paths, "cmake");
@@ -317,6 +322,11 @@ namespace vcpkg
 
         static PathAndVersion get_path(const VcpkgPaths& paths)
         {
+            if (System::get_environment_variable("VCPKG_FORCE_SYSTEM_BINARIES").has_value())
+            {
+                return {"ninja", "0"};
+            }
+
             static const ToolData TOOL_DATA = parse_tool_data_from_xml(paths, "ninja");
 
             std::vector<fs::path> candidate_paths;