cmake HAVE_VFORK examples

shadowsocks/shadowsocks-libev cmake/configure.cmake :83 

check_function_exists(vfork HAVE_VFORK)

SWI-Prolog/swipl-devel cmake/Config.cmake :167 

check_function_exists(vfork HAVE_VFORK)

snl-dakota/dakota src/CMakeLists.txt :181 

check_function_exists(vfork HAVE_VFORK)

snl-dakota/dakota src/CMakeLists.txt :185 

endif(HAVE_VFORK)

CTSRD-CHERI/cheribsd contrib/tcpdump/CMakeLists.txt :566 

check_function_exists(vfork HAVE_VFORK)

gccxml/gccxml GCC/config_cmake/CMakeLists.txt :253 

CHECK_FUNCTION_EXISTS(vfork HAVE_VFORK)

MiKTeX/miktex CMakeLists.txt :1367 

check_function_exists(vfork HAVE_VFORK)

HumbleNet/HumbleNet 3rdparty/libwebsockets/CMakeLists.txt :215 

CHECK_FUNCTION_EXISTS(vfork HAVE_VFORK)

Icinga/icinga2 CMakeLists.txt :369 

check_function_exists(vfork HAVE_VFORK)

ShadowsocksR-Live/shadowsocksr-native cmake/configure.cmake :109 

check_function_exists ( vfork HAVE_VFORK )