cmake HAVE_POSIX_MEMALIGN_DEFAULT examples

Froser/gamemachine src/3rdparty/openal-soft-1.19.1/CMakeLists.txt :136 

CHECK_SYMBOL_EXISTS(posix_memalign stdlib.h HAVE_POSIX_MEMALIGN_DEFAULT)

glKarin/com.n0n3m4.diii4a Q3E/src/main/jni/doom3/neo/externlibs/openal-soft/CMakeLists.txt :192 

check_symbol_exists(posix_memalign stdlib.h HAVE_POSIX_MEMALIGN_DEFAULT)