| |
| include(CheckCCompilerFlag) |
| include(CheckCXXCompilerFlag) |
| include(CheckLibraryExists) |
| |
| check_library_exists(c fopen "" LIBUNWIND_HAS_C_LIB) |
| |
| if (NOT LIBUNWIND_USE_COMPILER_RT) |
| check_library_exists(gcc_s __gcc_personality_v0 "" LIBUNWIND_HAS_GCC_S_LIB) |
| endif() |
| |
| # libunwind is built with -nodefaultlibs, so we want all our checks to also |
| # use this option, otherwise we may end up with an inconsistency between |
| # the flags we think we require during configuration (if the checks are |
| # performed without -nodefaultlibs) and the flags that are actually |
| # required during compilation (which has the -nodefaultlibs). libc is |
| # required for the link to go through. We remove sanitizers from the |
| # configuration checks to avoid spurious link errors. |
| check_c_compiler_flag(-nodefaultlibs LIBUNWIND_HAS_NODEFAULTLIBS_FLAG) |
| if (LIBUNWIND_HAS_NODEFAULTLIBS_FLAG) |
| set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} -nodefaultlibs") |
| if (LIBUNWIND_HAS_C_LIB) |
| list(APPEND CMAKE_REQUIRED_LIBRARIES c) |
| endif () |
| if (LIBUNWIND_USE_COMPILER_RT) |
| list(APPEND CMAKE_REQUIRED_FLAGS -rtlib=compiler-rt) |
| find_compiler_rt_library(builtins LIBUNWIND_BUILTINS_LIBRARY) |
| list(APPEND CMAKE_REQUIRED_LIBRARIES "${LIBUNWIND_BUILTINS_LIBRARY}") |
| elseif (LIBUNWIND_HAS_GCC_S_LIB) |
| list(APPEND CMAKE_REQUIRED_LIBRARIES gcc_s) |
| endif () |
| if (MINGW) |
| # Mingw64 requires quite a few "C" runtime libraries in order for basic |
| # programs to link successfully with -nodefaultlibs. |
| if (LIBUNWIND_USE_COMPILER_RT) |
| set(MINGW_RUNTIME ${LIBUNWIND_BUILTINS_LIBRARY}) |
| else () |
| set(MINGW_RUNTIME gcc_s gcc) |
| endif() |
| set(MINGW_LIBRARIES mingw32 ${MINGW_RUNTIME} moldname mingwex msvcrt advapi32 |
| shell32 user32 kernel32 mingw32 ${MINGW_RUNTIME} |
| moldname mingwex msvcrt) |
| list(APPEND CMAKE_REQUIRED_LIBRARIES ${MINGW_LIBRARIES}) |
| endif() |
| if (CMAKE_C_FLAGS MATCHES -fsanitize OR CMAKE_CXX_FLAGS MATCHES -fsanitize) |
| set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} -fno-sanitize=all") |
| endif () |
| if (CMAKE_C_FLAGS MATCHES -fsanitize-coverage OR CMAKE_CXX_FLAGS MATCHES -fsanitize-coverage) |
| set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} -fno-sanitize-coverage=edge,trace-cmp,indirect-calls,8bit-counters") |
| endif () |
| endif () |
| |
| # Check compiler flags |
| check_c_compiler_flag(-funwind-tables LIBUNWIND_HAS_FUNWIND_TABLES) |
| check_cxx_compiler_flag(-fno-exceptions LIBUNWIND_HAS_NO_EXCEPTIONS_FLAG) |
| check_cxx_compiler_flag(-fno-rtti LIBUNWIND_HAS_NO_RTTI_FLAG) |
| check_cxx_compiler_flag(-fstrict-aliasing LIBUNWIND_HAS_FSTRICT_ALIASING_FLAG) |
| check_cxx_compiler_flag(-nostdinc++ LIBUNWIND_HAS_NOSTDINCXX_FLAG) |
| check_cxx_compiler_flag(-Wall LIBUNWIND_HAS_WALL_FLAG) |
| check_cxx_compiler_flag(-W LIBUNWIND_HAS_W_FLAG) |
| check_cxx_compiler_flag(-Wno-unused-function LIBUNWIND_HAS_WNO_UNUSED_FUNCTION_FLAG) |
| check_cxx_compiler_flag(-Wunused-variable LIBUNWIND_HAS_WUNUSED_VARIABLE_FLAG) |
| check_cxx_compiler_flag(-Wunused-parameter LIBUNWIND_HAS_WUNUSED_PARAMETER_FLAG) |
| check_cxx_compiler_flag(-Wstrict-aliasing LIBUNWIND_HAS_WSTRICT_ALIASING_FLAG) |
| check_cxx_compiler_flag(-Wstrict-overflow LIBUNWIND_HAS_WSTRICT_OVERFLOW_FLAG) |
| check_cxx_compiler_flag(-Wwrite-strings LIBUNWIND_HAS_WWRITE_STRINGS_FLAG) |
| check_cxx_compiler_flag(-Wchar-subscripts LIBUNWIND_HAS_WCHAR_SUBSCRIPTS_FLAG) |
| check_cxx_compiler_flag(-Wmismatched-tags LIBUNWIND_HAS_WMISMATCHED_TAGS_FLAG) |
| check_cxx_compiler_flag(-Wmissing-braces LIBUNWIND_HAS_WMISSING_BRACES_FLAG) |
| check_cxx_compiler_flag(-Wshorten-64-to-32 LIBUNWIND_HAS_WSHORTEN_64_TO_32_FLAG) |
| check_cxx_compiler_flag(-Wsign-conversion LIBUNWIND_HAS_WSIGN_CONVERSION_FLAG) |
| check_cxx_compiler_flag(-Wsign-compare LIBUNWIND_HAS_WSIGN_COMPARE_FLAG) |
| check_cxx_compiler_flag(-Wshadow LIBUNWIND_HAS_WSHADOW_FLAG) |
| check_cxx_compiler_flag(-Wconversion LIBUNWIND_HAS_WCONVERSION_FLAG) |
| check_cxx_compiler_flag(-Wnewline-eof LIBUNWIND_HAS_WNEWLINE_EOF_FLAG) |
| check_cxx_compiler_flag(-Wundef LIBUNWIND_HAS_WUNDEF_FLAG) |
| check_cxx_compiler_flag(-pedantic LIBUNWIND_HAS_PEDANTIC_FLAG) |
| check_cxx_compiler_flag(-Werror LIBUNWIND_HAS_WERROR_FLAG) |
| check_cxx_compiler_flag(-Wno-error LIBUNWIND_HAS_WNO_ERROR_FLAG) |
| check_cxx_compiler_flag(/WX LIBUNWIND_HAS_WX_FLAG) |
| check_cxx_compiler_flag(/WX- LIBUNWIND_HAS_NO_WX_FLAG) |
| check_cxx_compiler_flag(/EHsc LIBUNWIND_HAS_EHSC_FLAG) |
| check_cxx_compiler_flag(/EHs- LIBUNWIND_HAS_NO_EHS_FLAG) |
| check_cxx_compiler_flag(/EHa- LIBUNWIND_HAS_NO_EHA_FLAG) |
| check_cxx_compiler_flag(/GR- LIBUNWIND_HAS_NO_GR_FLAG) |
| check_cxx_compiler_flag(-std=c++11 LIBUNWIND_HAS_STD_CXX11) |
| |
| if(LIBUNWIND_HAS_STD_CXX11) |
| set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11") |
| endif() |
| |
| check_library_exists(dl dladdr "" LIBUNWIND_HAS_DL_LIB) |
| check_library_exists(pthread pthread_once "" LIBUNWIND_HAS_PTHREAD_LIB) |
| |
