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Use more proper cmake to set the C/C++ standard version

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This commit is contained in:
Chris Robinson
2019-07-27 18:58:19 -07:00
parent 7cfb353334
commit 659b6d4245
1 changed files with 6 additions and 13 deletions
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CMakeLists.txt
+6 -13
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@@ -117,20 +117,13 @@ CHECK_TYPE_SIZE("long" SIZEOF_LONG)
CHECK_TYPE_SIZE("long long" SIZEOF_LONG_LONG)
CHECK_C_COMPILER_FLAG(-std=c11 HAVE_STD_C11)
IF(HAVE_STD_C11)
SET(CMAKE_C_FLAGS "-std=c11 ${CMAKE_C_FLAGS}")
ELSE()
CHECK_C_COMPILER_FLAG(-std=c99 HAVE_STD_C99)
IF(HAVE_STD_C99)
SET(CMAKE_C_FLAGS "-std=c99 ${CMAKE_C_FLAGS}")
ENDIF()
ENDIF()
# Require C++11
SET(CMAKE_CXX_STANDARD 11)
SET(CMAKE_CXX_STANDARD_REQUIRED TRUE)
# Prefer C11, but support C99 and C90 too.
SET(CMAKE_C_STANDARD 11)
CHECK_CXX_COMPILER_FLAG(-std=c++11 HAVE_STD_CXX11)
IF(HAVE_STD_CXX11)
SET(CMAKE_CXX_FLAGS "-std=c++11 ${CMAKE_CXX_FLAGS}")
ENDIF()
if(NOT WIN32)
# Check if _POSIX_C_SOURCE and _XOPEN_SOURCE needs to be set for POSIX functions