[Unix] Passing extra CMake args

Added support for compiler and linker additional arguments in CMake.
By using CLR_ADDITIONAL_LINKER_FLAGS and CLR_ADDITIONAL_COMPILER_OPTIONS
it's possible to pass toolchain options without changing Makefile.

Commit migrated from https://github.com/dotnet/coreclr/commit/ba61f968ff48f2aec448bb6d1448e3d56310f2e7

diff --git a/src/coreclr/CMakeLists.txt b/src/coreclr/CMakeLists.txt
index e59995d..7d5d501 100644 (file)
--- a/src/coreclr/CMakeLists.txt
+++ b/src/coreclr/CMakeLists.txt
@@ -450,6 +450,18 @@ elseif (CLR_CMAKE_PLATFORM_UNIX)
   endif(UPPERCASE_CMAKE_BUILD_TYPE STREQUAL DEBUG OR UPPERCASE_CMAKE_BUILD_TYPE STREQUAL CHECKED)
 endif(WIN32)
 
+# CLR_ADDITIONAL_LINKER_FLAGS - used for passing additional arguments to linker
+# CLR_ADDITIONAL_COMPILER_OPTIONS - used for passing additional arguments to compiler
+#
+# For example:
+#       ./build-native.sh cmakeargs "-DCLR_ADDITIONAL_COMPILER_OPTIONS=<...>" cmakeargs "-DCLR_ADDITIONAL_LINKER_FLAGS=<...>"
+#
+if(CLR_CMAKE_PLATFORM_UNIX)
+    set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} ${CLR_ADDITIONAL_LINKER_FLAGS}")
+    set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} ${CLR_ADDITIONAL_LINKER_FLAGS}" )
+    add_compile_options(${CLR_ADDITIONAL_COMPILER_OPTIONS})
+endif(CLR_CMAKE_PLATFORM_UNIX)
+
 if(CLR_CMAKE_PLATFORM_LINUX)
   set(CMAKE_ASM_FLAGS "${CMAKE_ASM_FLAGS} -Wa,--noexecstack")
   set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -Wl,--build-id=sha1")