cmake HAVE_LINUX_PTRACE_H examples

SwagSoftware/Kisak-Strike thirdparty/gperftools-2.8.1/CMakeLists.txt :201 

check_include_file("linux/ptrace.h" HAVE_LINUX_PTRACE_H)

ucla-vision/xivo thirdparty/gperftools/CMakeLists.txt :185 

check_include_file("linux/ptrace.h" HAVE_LINUX_PTRACE_H)

p4lang/open-p4studio pkgsrc/target-syslibs/third-party/gperftools/CMakeLists.txt :185 

check_include_file("linux/ptrace.h" HAVE_LINUX_PTRACE_H)