cmake HAVE_GETTID examples

cmake HAVE_GETTID examples

Lewuathe/mlir-hello thirdparty/llvm-project/lldb/unittests/Process/elf-core/CMakeLists.txt :22

check_symbol_exists(gettid "unistd.h" HAVE_GETTID)

Lewuathe/mlir-hello thirdparty/llvm-project/lldb/unittests/Process/elf-core/CMakeLists.txt :24

target_compile_definitions(ProcessElfCoreTests PRIVATE HAVE_GETTID)

ceph/ceph cmake/modules/CephChecks.cmake :43

check_function_exists(gettid HAVE_GETTID)

MRPT/mrpt cmakemodules/script_detect_functions_headers.cmake :19

CHECK_FUNCTION_EXISTS(gettid HAVE_GETTID)

netdata/netdata CMakeLists.txt :496

check_function_exists(gettid HAVE_GETTID)