cmake HAVE_STRCSPN examples

gridlab-d/gridlab-d cmake/CheckDependencies.cmake :61 

CHECK_FUNCTION_EXISTS(strcspn HAVE_STRCSPN)

p4lang/open-p4studio cmake/ConfigureChecks.cmake :72 

check_function_exists(strcspn HAVE_STRCSPN)

p4lang/open-p4studio pkgsrc/target-syslibs/cmake/ConfigureChecks.cmake :61 

check_function_exists(strcspn HAVE_STRCSPN)

p4lang/open-p4studio pkgsrc/target-utils/cmake/ConfigureChecks.cmake :63 

check_function_exists(strcspn HAVE_STRCSPN)