Warzone2100/warzone2100
lib/sound/CMakeLists.txt
:34
CHECK_INCLUDE_FILE_CXX("AL/alext.h" HAVE_OPENAL_ALEXT_H)
CHECK_INCLUDE_FILE_CXX("AL/alext.h" HAVE_OPENAL_ALEXT_H)
target_compile_definitions(sound PRIVATE "-DHAVE_OPENAL_ALEXT_H")