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Test for -ffile-prefix-map support instead of comparing versions.

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Comparing versions is not viable because Apple clang has its own
versioning scheme which is also undocumented.
This commit is contained in:
whitequark 2019-11-24 18:55:46 +00:00
parent 690f87cf4a
commit fb536a155d
1 changed files with 7 additions and 6 deletions
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13
CMakeLists.txt
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@ -66,12 +66,13 @@ endif()
# common compiler flags
if((CMAKE_CXX_COMPILER_ID STREQUAL "GNU" AND NOT (CMAKE_CXX_COMPILER_VERSION VERSION_LESS 8.0)) OR
CMAKE_CXX_COMPILER_ID MATCHES "Clang")
set(DEBUG_FLAGS "-fdebug-prefix-map=${CMAKE_CURRENT_SOURCE_DIR}=.")
set(DEBUG_FLAGS "${DEBUG_FLAGS} -ffile-prefix-map=${CMAKE_CURRENT_SOURCE_DIR}=.")
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${DEBUG_FLAGS}")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${DEBUG_FLAGS}")
include(CheckCXXCompilerFlag)
set(FILE_PREFIX_MAP "-ffile-prefix-map=${CMAKE_CURRENT_SOURCE_DIR}=.")
check_cxx_compiler_flag("${FILE_PREFIX_MAP}" HAS_FILE_PREFIX_MAP)
if(HAS_FILE_PREFIX_MAP)
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${FILE_PREFIX_MAP}")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${FILE_PREFIX_MAP}")
endif()
if(MINGW)