cmake HAVE_VFORK_H examples

shadowsocks/shadowsocks-libev cmake/configure.cmake :84 

check_include_files(vfork.h HAVE_VFORK_H)

SWI-Prolog/swipl-devel cmake/Config.cmake :51 

check_include_file(vfork.h HAVE_VFORK_H)

InsightSoftwareConsortium/ITK Modules/ThirdParty/MINC/src/libminc/CMakeLists.txt :201 

CHECK_INCLUDE_FILES(vfork.h     HAVE_VFORK_H)

gccxml/gccxml GCC/config_cmake/CMakeLists.txt :201 

CHECK_INCLUDE_FILE(vfork.h HAVE_VFORK_H)

HumbleNet/HumbleNet 3rdparty/libwebsockets/CMakeLists.txt :241 

CHECK_INCLUDE_FILE(vfork.h HAVE_VFORK_H)

ShadowsocksR-Live/shadowsocksr-native cmake/configure.cmake :77 

check_include_files ( vfork.h HAVE_VFORK_H )