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Check if _XOPEN_SOURCE needs to be set

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This commit is contained in:
Chris Robinson
2015-12-11 09:41:46 -08:00
parent 01e43e5d4d
commit e034afe107
1 changed files with 25 additions and 10 deletions
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CMakeLists.txt
+25 -10
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@@ -98,16 +98,31 @@ ELSE()
ENDIF()
ENDIF()
# Check if _POSIX_C_SOURCE needs to be set for POSIX functions
CHECK_SYMBOL_EXISTS(posix_memalign stdlib.h HAVE_POSIX_MEMALIGN_DEFAULT)
IF(NOT HAVE_POSIX_MEMALIGN_DEFAULT)
SET(OLD_REQUIRED_FLAGS ${CMAKE_REQUIRED_FLAGS})
SET(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} -D_POSIX_C_SOURCE=200809L")
CHECK_SYMBOL_EXISTS(posix_memalign stdlib.h HAVE_POSIX_MEMALIGN_POSIX)
IF(NOT HAVE_POSIX_MEMALIGN_POSIX)
SET(CMAKE_REQUIRED_FLAGS ${OLD_REQUIRED_FLAGS})
ELSE()
ADD_DEFINITIONS(-D_POSIX_C_SOURCE=200809L)
if(NOT WIN32)
# Check if _POSIX_C_SOURCE needs to be set for POSIX functions
CHECK_SYMBOL_EXISTS(posix_memalign stdlib.h HAVE_POSIX_MEMALIGN_DEFAULT)
IF(NOT HAVE_POSIX_MEMALIGN_DEFAULT)
SET(OLD_REQUIRED_FLAGS ${CMAKE_REQUIRED_FLAGS})
SET(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} -D_POSIX_C_SOURCE=200809L")
CHECK_SYMBOL_EXISTS(posix_memalign stdlib.h HAVE_POSIX_MEMALIGN_POSIX)
IF(NOT HAVE_POSIX_MEMALIGN_POSIX)
SET(CMAKE_REQUIRED_FLAGS ${OLD_REQUIRED_FLAGS})
ELSE()
ADD_DEFINITIONS(-D_POSIX_C_SOURCE=200809L)
ENDIF()
ENDIF()
# Check if _XOPEN_SOURCE needs to be set (if POSIX < 2008)
CHECK_SYMBOL_EXISTS(scandir dirent.h HAVE_SCANDIR_DEFAULT)
IF(NOT HAVE_SCANDIR_DEFAULT)
SET(OLD_REQUIRED_FLAGS ${CMAKE_REQUIRED_FLAGS})
SET(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} -D_XOPEN_SOURCE=700")
CHECK_SYMBOL_EXISTS(scandir dirent.h HAVE_SCANDIR_XOPEN)
IF(NOT HAVE_SCANDIR_XOPEN)
SET(CMAKE_REQUIRED_FLAGS ${OLD_REQUIRED_FLAGS})
ELSE()
ADD_DEFINITIONS(-D_XOPEN_SOURCE=700)
ENDIF()
ENDIF()
UNSET(OLD_REQUIRED_FLAGS)
ENDIF()