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Fix detection of available compilation flags.

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This commit is contained in:
Axel Naumann 2016-09-29 11:16:22 +02:00 committed by sftnight
parent 1ce8341b6d
commit 83b879cd3a
1 changed files with 10 additions and 4 deletions
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14
CMakeLists.txt
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@ -185,6 +185,15 @@ if( CMAKE_SOURCE_DIR STREQUAL CMAKE_BINARY_DIR AND NOT MSVC_IDE )
"`CMakeFiles'. Please delete them.")
endif()
# From ROOT:
function(cling_add_cxx_flag var flag)
string(REGEX REPLACE "[-.+/:= ]" "_" flag_esc "${flag}")
CHECK_CXX_COMPILER_FLAG("${flag}" CXX_HAS${flag_esc})
if(CXX_HAS${flag_esc})
set(${var} "${${var}} ${flag}" PARENT_SCOPE)
endif()
endfunction()
# Add appropriate flags for GCC
if (LLVM_COMPILER_IS_GCC_COMPATIBLE)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fno-common -Woverloaded-virtual")
@ -193,10 +202,7 @@ if (LLVM_COMPILER_IS_GCC_COMPATIBLE)
endif ()
foreach (check_flag "-Wno-nested-anon-types" "-Wno-covered-switch-default" "-Wno-unused-local-typedef")
check_cxx_compiler_flag(${check_flag} CXX_SUPPORTS_SOME_FLAG)
if (CXX_SUPPORTS_SOME_FLAG)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${check_flag}")
endif ()
cling_add_cxx_flag(CMAKE_CXX_FLAGS ${check_flag})
endforeach ()
endif ()