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CMake: Fix compile flag detection on old CMake

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This commit is contained in:
Max Bruckner 2017-02-07 16:43:13 +01:00
parent d00ca18ac2
commit 2f712c7456
1 changed files with 8 additions and 1 deletions
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9
CMakeLists.txt
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@ -33,7 +33,6 @@ if (ENABLE_CUSTOM_COMPILER_FLAGS)
-Wmissing-prototypes -Wmissing-prototypes
-Wstrict-overflow=2 -Wstrict-overflow=2
-Wcast-qual -Wcast-qual
-Wc++-compat
-Wundef -Wundef
-Wswitch-default -Wswitch-default
-Wconversion -Wconversion
@ -41,6 +40,14 @@ if (ENABLE_CUSTOM_COMPILER_FLAGS)
) )
endif() endif()
# "I am starting to hate CMake" - FSMaxB
# In older versions of CMake, testing for -Wc++-compat
# fails because it cannot compile a regular expression
# This seems to be a bug in the CheckCSourceCompiles module
if (NOT (CMAKE_MAJOR_VERSION EQUAL 2))
list(APPEND custom_compiler_flags "-Wc++-compat")
endif()
# apply custom compiler flags # apply custom compiler flags
foreach(compiler_flag ${custom_compiler_flags}) foreach(compiler_flag ${custom_compiler_flags})
CHECK_C_COMPILER_FLAG(${compiler_flag} "FLAG_SUPPORTED-${compiler_flag}") CHECK_C_COMPILER_FLAG(${compiler_flag} "FLAG_SUPPORTED-${compiler_flag}")