forked from OSchip/llvm-project
100 lines
5.1 KiB
CMake
100 lines
5.1 KiB
CMake
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include(CheckCCompilerFlag)
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include(CheckCXXCompilerFlag)
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include(CheckLibraryExists)
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check_library_exists(c fopen "" LIBUNWIND_HAS_C_LIB)
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if (NOT LIBUNWIND_USE_COMPILER_RT)
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check_library_exists(gcc_s __gcc_personality_v0 "" LIBUNWIND_HAS_GCC_S_LIB)
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check_library_exists(gcc __absvdi2 "" LIBUNWIND_HAS_GCC_LIB)
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endif()
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# libunwind is built with -nodefaultlibs, so we want all our checks to also
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# use this option, otherwise we may end up with an inconsistency between
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# the flags we think we require during configuration (if the checks are
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# performed without -nodefaultlibs) and the flags that are actually
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# required during compilation (which has the -nodefaultlibs). libc is
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# required for the link to go through. We remove sanitizers from the
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# configuration checks to avoid spurious link errors.
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check_c_compiler_flag(-nodefaultlibs LIBUNWIND_HAS_NODEFAULTLIBS_FLAG)
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if (LIBUNWIND_HAS_NODEFAULTLIBS_FLAG)
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set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} -nodefaultlibs")
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if (LIBUNWIND_HAS_C_LIB)
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list(APPEND CMAKE_REQUIRED_LIBRARIES c)
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endif ()
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if (LIBUNWIND_USE_COMPILER_RT)
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find_compiler_rt_library(builtins LIBUNWIND_BUILTINS_LIBRARY)
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list(APPEND CMAKE_REQUIRED_LIBRARIES "${LIBUNWIND_BUILTINS_LIBRARY}")
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else ()
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if (LIBUNWIND_HAS_GCC_S_LIB)
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list(APPEND CMAKE_REQUIRED_LIBRARIES gcc_s)
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endif ()
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if (LIBUNWIND_HAS_GCC_LIB)
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list(APPEND CMAKE_REQUIRED_LIBRARIES gcc)
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endif ()
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endif ()
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if (MINGW)
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# Mingw64 requires quite a few "C" runtime libraries in order for basic
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# programs to link successfully with -nodefaultlibs.
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if (LIBUNWIND_USE_COMPILER_RT)
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set(MINGW_RUNTIME ${LIBUNWIND_BUILTINS_LIBRARY})
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else ()
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set(MINGW_RUNTIME gcc_s gcc)
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endif()
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set(MINGW_LIBRARIES mingw32 ${MINGW_RUNTIME} moldname mingwex msvcrt advapi32
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shell32 user32 kernel32 mingw32 ${MINGW_RUNTIME}
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moldname mingwex msvcrt)
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list(APPEND CMAKE_REQUIRED_LIBRARIES ${MINGW_LIBRARIES})
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endif()
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if (CMAKE_C_FLAGS MATCHES -fsanitize OR CMAKE_CXX_FLAGS MATCHES -fsanitize)
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set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} -fno-sanitize=all")
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endif ()
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if (CMAKE_C_FLAGS MATCHES -fsanitize-coverage OR CMAKE_CXX_FLAGS MATCHES -fsanitize-coverage)
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set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} -fno-sanitize-coverage=edge,trace-cmp,indirect-calls,8bit-counters")
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endif ()
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endif ()
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# Check compiler flags
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check_c_compiler_flag(-funwind-tables LIBUNWIND_HAS_FUNWIND_TABLES)
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check_cxx_compiler_flag(-fno-exceptions LIBUNWIND_HAS_NO_EXCEPTIONS_FLAG)
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check_cxx_compiler_flag(-fno-rtti LIBUNWIND_HAS_NO_RTTI_FLAG)
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check_cxx_compiler_flag(-fstrict-aliasing LIBUNWIND_HAS_FSTRICT_ALIASING_FLAG)
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check_cxx_compiler_flag(-nostdinc++ LIBUNWIND_HAS_NOSTDINCXX_FLAG)
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check_cxx_compiler_flag(-Wall LIBUNWIND_HAS_WALL_FLAG)
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check_cxx_compiler_flag(-W LIBUNWIND_HAS_W_FLAG)
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check_cxx_compiler_flag(-Wno-unused-function LIBUNWIND_HAS_WNO_UNUSED_FUNCTION_FLAG)
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check_cxx_compiler_flag(-Wunused-variable LIBUNWIND_HAS_WUNUSED_VARIABLE_FLAG)
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check_cxx_compiler_flag(-Wunused-parameter LIBUNWIND_HAS_WUNUSED_PARAMETER_FLAG)
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check_cxx_compiler_flag(-Wstrict-aliasing LIBUNWIND_HAS_WSTRICT_ALIASING_FLAG)
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check_cxx_compiler_flag(-Wstrict-overflow LIBUNWIND_HAS_WSTRICT_OVERFLOW_FLAG)
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check_cxx_compiler_flag(-Wwrite-strings LIBUNWIND_HAS_WWRITE_STRINGS_FLAG)
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check_cxx_compiler_flag(-Wchar-subscripts LIBUNWIND_HAS_WCHAR_SUBSCRIPTS_FLAG)
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check_cxx_compiler_flag(-Wmismatched-tags LIBUNWIND_HAS_WMISMATCHED_TAGS_FLAG)
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check_cxx_compiler_flag(-Wmissing-braces LIBUNWIND_HAS_WMISSING_BRACES_FLAG)
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check_cxx_compiler_flag(-Wshorten-64-to-32 LIBUNWIND_HAS_WSHORTEN_64_TO_32_FLAG)
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check_cxx_compiler_flag(-Wsign-conversion LIBUNWIND_HAS_WSIGN_CONVERSION_FLAG)
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check_cxx_compiler_flag(-Wsign-compare LIBUNWIND_HAS_WSIGN_COMPARE_FLAG)
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check_cxx_compiler_flag(-Wshadow LIBUNWIND_HAS_WSHADOW_FLAG)
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check_cxx_compiler_flag(-Wconversion LIBUNWIND_HAS_WCONVERSION_FLAG)
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check_cxx_compiler_flag(-Wnewline-eof LIBUNWIND_HAS_WNEWLINE_EOF_FLAG)
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check_cxx_compiler_flag(-Wundef LIBUNWIND_HAS_WUNDEF_FLAG)
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check_cxx_compiler_flag(-pedantic LIBUNWIND_HAS_PEDANTIC_FLAG)
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check_cxx_compiler_flag(-Werror LIBUNWIND_HAS_WERROR_FLAG)
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check_cxx_compiler_flag(-Wno-error LIBUNWIND_HAS_WNO_ERROR_FLAG)
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check_cxx_compiler_flag(/WX LIBUNWIND_HAS_WX_FLAG)
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check_cxx_compiler_flag(/WX- LIBUNWIND_HAS_NO_WX_FLAG)
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check_cxx_compiler_flag(/EHsc LIBUNWIND_HAS_EHSC_FLAG)
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check_cxx_compiler_flag(/EHs- LIBUNWIND_HAS_NO_EHS_FLAG)
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check_cxx_compiler_flag(/EHa- LIBUNWIND_HAS_NO_EHA_FLAG)
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check_cxx_compiler_flag(/GR- LIBUNWIND_HAS_NO_GR_FLAG)
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check_cxx_compiler_flag(-std=c++11 LIBUNWIND_HAS_STD_CXX11)
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if(LIBUNWIND_HAS_STD_CXX11)
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set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11")
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endif()
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check_library_exists(dl dladdr "" LIBUNWIND_HAS_DL_LIB)
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check_library_exists(pthread pthread_once "" LIBUNWIND_HAS_PTHREAD_LIB)
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