cmake HAVE_MINCORE examples

alibaba/AliSQL storage/tokudb/ft-index/cmake_modules/TokuFeatureDetection.cmake :73 

check_function_exists(mincore HAVE_MINCORE)

percona/PerconaFT cmake_modules/TokuFeatureDetection.cmake :74 

check_function_exists(mincore HAVE_MINCORE)

oscarlab/betrfs cmake_modules/TokuFeatureDetection.cmake :78 

check_function_exists(mincore HAVE_MINCORE)

gccxml/gccxml GCC/config_cmake/CMakeLists.txt :494 

CHECK_FUNCTION_EXISTS(mincore HAVE_MINCORE)