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llvm-project/libcxxabi/cmake/config-ix.cmake

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CMake
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[runtimes] Use -Wunknown-pragmas for the pragma check This is a follow up to r362055, we need -Wunknown-pragmas otherwise the check is going to succeed it the pragma isn't supported. llvm-svn: 362057
2019-05-30 13:38:06 +08:00
include(CMakePushCheckState)
Add a cmake build system. Will add support for tests with lit in a later patch. This does not yet support building the unwinder in src/Unwind. llvm-svn: 212286
2014-07-04 03:35:48 +08:00
include(CheckLibraryExists)
Add -funwind-tables to CMAKE_C_FLAGS. Without -funwind-tables, the compiler won't generate the unwinding table for these C functions. However, the functions in libunwind, such as `_Unwind_Backtrace()`, WILL unwind stack to get the backtrace. llvm-svn: 226823
2015-01-22 21:39:08 +08:00
include(CheckCCompilerFlag)
Add a cmake build system. Will add support for tests with lit in a later patch. This does not yet support building the unwinder in src/Unwind. llvm-svn: 212286
2014-07-04 03:35:48 +08:00
include(CheckCXXCompilerFlag)
[runtimes] Check if pragma comment(lib, ...) is supported first This fixes the issue introduced by r362048 where we always use pragma comment(lib, ...) for dependent libraries when the compiler is Clang, but older Clang versions don't support this pragma so we need to check first if it's supported before using it. llvm-svn: 362055
2019-05-30 12:40:21 +08:00
include(CheckCSourceCompiles)
Add a cmake build system. Will add support for tests with lit in a later patch. This does not yet support building the unwinder in src/Unwind. llvm-svn: 212286
2014-07-04 03:35:48 +08:00
Revert "[CMake] Use __libc_start_main rather than fopen when checking for C library" This reverts commit r352341: it broke the build on macOS which doesn't seem to provide __libc_start_main in its C library. llvm-svn: 352411
2019-01-29 03:26:41 +08:00
check_library_exists(c fopen "" LIBCXXABI_HAS_C_LIB)
[CMake][libcxxabi] Use -nodefaultlibs for CMake checks Since libc++abi is built with -nodefaultlibs, we should be using this option even for CMake checks to avoid any inconsistency and also to avoid dependency on a working C++ standard library just for the setting up the build itself. The implementation is largely similar to the one used by libc++. Differential Revision: https://reviews.llvm.org/D31639 llvm-svn: 299797
2017-04-08 04:10:41 +08:00
if (NOT LIBCXXABI_USE_COMPILER_RT)
check_library_exists(gcc_s __gcc_personality_v0 "" LIBCXXABI_HAS_GCC_S_LIB)
endif ()
# libc++abi 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 LIBCXXABI_HAS_NODEFAULTLIBS_FLAG)
if (LIBCXXABI_HAS_NODEFAULTLIBS_FLAG)
set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} -nodefaultlibs")
if (LIBCXXABI_HAS_C_LIB)
list(APPEND CMAKE_REQUIRED_LIBRARIES c)
endif ()
if (LIBCXXABI_USE_COMPILER_RT)
list(APPEND CMAKE_REQUIRED_FLAGS -rtlib=compiler-rt)
find_compiler_rt_library(builtins LIBCXXABI_BUILTINS_LIBRARY)
list(APPEND CMAKE_REQUIRED_LIBRARIES "${LIBCXXABI_BUILTINS_LIBRARY}")
elseif (LIBCXXABI_HAS_GCC_S_LIB)
list(APPEND CMAKE_REQUIRED_LIBRARIES gcc_s)
endif ()
Apply libc++ MinGW CMake fix to libc++abi llvm-svn: 302754
2017-05-11 10:00:25 +08:00
if (MINGW)
# Mingw64 requires quite a few "C" runtime libraries in order for basic
# programs to link successfully with -nodefaultlibs.
[Libcxxabi]: Support using compiler-rt for MinGW64 Reviewers: EricWF Differential Revision: https://reviews.llvm.org/D33098 llvm-svn: 302824
2017-05-12 05:16:29 +08:00
if (LIBCXXABI_USE_COMPILER_RT)
set(MINGW_RUNTIME ${LIBCXXABI_BUILTINS_LIBRARY})
else ()
set(MINGW_RUNTIME gcc_s gcc)
endif()
set(MINGW_LIBRARIES mingw32 ${MINGW_RUNTIME} moldname mingwex msvcrt advapi32
[libcxxabi] iconv is not needed for mingw-w64 llvm-svn: 304026
2017-05-27 03:39:39 +08:00
shell32 user32 kernel32 mingw32 ${MINGW_RUNTIME}
[Libcxxabi]: Support using compiler-rt for MinGW64 Reviewers: EricWF Differential Revision: https://reviews.llvm.org/D33098 llvm-svn: 302824
2017-05-12 05:16:29 +08:00
moldname mingwex msvcrt)
Fix Libc++abi linking under MinGW64 llvm-svn: 302760
2017-05-11 11:29:59 +08:00
list(APPEND CMAKE_REQUIRED_LIBRARIES ${MINGW_LIBRARIES})
Apply libc++ MinGW CMake fix to libc++abi llvm-svn: 302754
2017-05-11 10:00:25 +08:00
endif()
[CMake][libcxxabi] Use -nodefaultlibs for CMake checks Since libc++abi is built with -nodefaultlibs, we should be using this option even for CMake checks to avoid any inconsistency and also to avoid dependency on a working C++ standard library just for the setting up the build itself. The implementation is largely similar to the one used by libc++. Differential Revision: https://reviews.llvm.org/D31639 llvm-svn: 299797
2017-04-08 04:10:41 +08:00
if (CMAKE_C_FLAGS MATCHES -fsanitize OR CMAKE_CXX_FLAGS MATCHES -fsanitize)
set(CMAKE_REQUIRED_FLAGS "${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 "${CMAKE_REQUIRED_FLAGS} -fno-sanitize-coverage=edge,trace-cmp,indirect-calls,8bit-counters")
endif ()
endif ()
[runtimes] Check if pragma comment(lib, ...) is supported first This fixes the issue introduced by r362048 where we always use pragma comment(lib, ...) for dependent libraries when the compiler is Clang, but older Clang versions don't support this pragma so we need to check first if it's supported before using it. llvm-svn: 362055
2019-05-30 12:40:21 +08:00
# Check compiler pragmas
if(CMAKE_CXX_COMPILER_ID MATCHES "Clang")
[runtimes] Use -Wunknown-pragmas for the pragma check This is a follow up to r362055, we need -Wunknown-pragmas otherwise the check is going to succeed it the pragma isn't supported. llvm-svn: 362057
2019-05-30 13:38:06 +08:00
cmake_push_check_state()
set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} -Werror=unknown-pragmas")
[runtimes] Check if pragma comment(lib, ...) is supported first This fixes the issue introduced by r362048 where we always use pragma comment(lib, ...) for dependent libraries when the compiler is Clang, but older Clang versions don't support this pragma so we need to check first if it's supported before using it. llvm-svn: 362055
2019-05-30 12:40:21 +08:00
check_c_source_compiles("
#pragma comment(lib, \"c\")
int main() { return 0; }
" LIBCXXABI_HAS_COMMENT_LIB_PRAGMA)
[runtimes] Use -Wunknown-pragmas for the pragma check This is a follow up to r362055, we need -Wunknown-pragmas otherwise the check is going to succeed it the pragma isn't supported. llvm-svn: 362057
2019-05-30 13:38:06 +08:00
cmake_pop_check_state()
[runtimes] Check if pragma comment(lib, ...) is supported first This fixes the issue introduced by r362048 where we always use pragma comment(lib, ...) for dependent libraries when the compiler is Clang, but older Clang versions don't support this pragma so we need to check first if it's supported before using it. llvm-svn: 362055
2019-05-30 12:40:21 +08:00
endif()
Add a cmake build system. Will add support for tests with lit in a later patch. This does not yet support building the unwinder in src/Unwind. llvm-svn: 212286
2014-07-04 03:35:48 +08:00
# Check compiler flags
Add -funwind-tables to CMAKE_C_FLAGS. Without -funwind-tables, the compiler won't generate the unwinding table for these C functions. However, the functions in libunwind, such as `_Unwind_Backtrace()`, WILL unwind stack to get the backtrace. llvm-svn: 226823
2015-01-22 21:39:08 +08:00
check_c_compiler_flag(-funwind-tables LIBCXXABI_HAS_FUNWIND_TABLES)
unwind: use -fno-rtti -fno-exceptions -funwind-tables RTTI and exceptions are not needed for the unwinder, the use of C++ there is for very specific cases, and does not require dynamic_cast nor does it use exceptions. This avoids unnecessary references to type information being emitted. llvm-svn: 228408
2015-02-07 01:47:57 +08:00
check_cxx_compiler_flag(-fno-exceptions LIBCXXABI_HAS_NO_EXCEPTIONS_FLAG)
check_cxx_compiler_flag(-fno-rtti LIBCXXABI_HAS_NO_RTTI_FLAG)
Make cmake cxxflags match those in lib/buildit. llvm-svn: 212768
2014-07-11 06:23:03 +08:00
check_cxx_compiler_flag(-fstrict-aliasing LIBCXXABI_HAS_FSTRICT_ALIASING_FLAG)
Add a cmake build system. Will add support for tests with lit in a later patch. This does not yet support building the unwinder in src/Unwind. llvm-svn: 212286
2014-07-04 03:35:48 +08:00
check_cxx_compiler_flag(-nostdinc++ LIBCXXABI_HAS_NOSTDINCXX_FLAG)
check_cxx_compiler_flag(-Wall LIBCXXABI_HAS_WALL_FLAG)
check_cxx_compiler_flag(-W LIBCXXABI_HAS_W_FLAG)
Turn on -Wunused-function and cleanup occurances llvm-svn: 296936
2017-03-04 09:02:35 +08:00
check_cxx_compiler_flag(-Wunused-function LIBCXXABI_HAS_WUNUSED_FUNCTION_FLAG)
Make cmake cxxflags match those in lib/buildit. llvm-svn: 212768
2014-07-11 06:23:03 +08:00
check_cxx_compiler_flag(-Wunused-variable LIBCXXABI_HAS_WUNUSED_VARIABLE_FLAG)
check_cxx_compiler_flag(-Wunused-parameter LIBCXXABI_HAS_WUNUSED_PARAMETER_FLAG)
check_cxx_compiler_flag(-Wstrict-aliasing LIBCXXABI_HAS_WSTRICT_ALIASING_FLAG)
check_cxx_compiler_flag(-Wstrict-overflow LIBCXXABI_HAS_WSTRICT_OVERFLOW_FLAG)
Add a cmake build system. Will add support for tests with lit in a later patch. This does not yet support building the unwinder in src/Unwind. llvm-svn: 212286
2014-07-04 03:35:48 +08:00
check_cxx_compiler_flag(-Wwrite-strings LIBCXXABI_HAS_WWRITE_STRINGS_FLAG)
Make cmake cxxflags match those in lib/buildit. llvm-svn: 212768
2014-07-11 06:23:03 +08:00
check_cxx_compiler_flag(-Wchar-subscripts LIBCXXABI_HAS_WCHAR_SUBSCRIPTS_FLAG)
check_cxx_compiler_flag(-Wmismatched-tags LIBCXXABI_HAS_WMISMATCHED_TAGS_FLAG)
check_cxx_compiler_flag(-Wmissing-braces LIBCXXABI_HAS_WMISSING_BRACES_FLAG)
check_cxx_compiler_flag(-Wshorten-64-to-32 LIBCXXABI_HAS_WSHORTEN_64_TO_32_FLAG)
check_cxx_compiler_flag(-Wsign-conversion LIBCXXABI_HAS_WSIGN_CONVERSION_FLAG)
check_cxx_compiler_flag(-Wsign-compare LIBCXXABI_HAS_WSIGN_COMPARE_FLAG)
check_cxx_compiler_flag(-Wshadow LIBCXXABI_HAS_WSHADOW_FLAG)
check_cxx_compiler_flag(-Wconversion LIBCXXABI_HAS_WCONVERSION_FLAG)
check_cxx_compiler_flag(-Wnewline-eof LIBCXXABI_HAS_WNEWLINE_EOF_FLAG)
Enable -Wundef. The problem that caused the need for http://reviews.llvm.org/D7419 was caused by testing the value of something that was undefined. This should prevent that in the future. llvm-svn: 228257
2015-02-05 09:33:15 +08:00
check_cxx_compiler_flag(-Wundef LIBCXXABI_HAS_WUNDEF_FLAG)
Add a cmake build system. Will add support for tests with lit in a later patch. This does not yet support building the unwinder in src/Unwind. llvm-svn: 212286
2014-07-04 03:35:48 +08:00
check_cxx_compiler_flag(-pedantic LIBCXXABI_HAS_PEDANTIC_FLAG)
check_cxx_compiler_flag(-Werror LIBCXXABI_HAS_WERROR_FLAG)
check_cxx_compiler_flag(-Wno-error LIBCXXABI_HAS_WNO_ERROR_FLAG)
check_cxx_compiler_flag(/WX LIBCXXABI_HAS_WX_FLAG)
check_cxx_compiler_flag(/WX- LIBCXXABI_HAS_NO_WX_FLAG)
check_cxx_compiler_flag(/EHsc LIBCXXABI_HAS_EHSC_FLAG)
check_cxx_compiler_flag(/EHs- LIBCXXABI_HAS_NO_EHS_FLAG)
check_cxx_compiler_flag(/EHa- LIBCXXABI_HAS_NO_EHA_FLAG)
check_cxx_compiler_flag(/GR- LIBCXXABI_HAS_NO_GR_FLAG)
# Check libraries
libcxxabi must link to dl if using bundled unwind Patch by Ismail Donmez http://reviews.llvm.org/D4953 llvm-svn: 215950
2014-08-19 07:43:43 +08:00
check_library_exists(dl dladdr "" LIBCXXABI_HAS_DL_LIB)
Fix for libc++abi when using -Wl,--as-needed. The cmake files for libc++abi and the unwinder weren't linking against libpthread or an unwind library. If the tests were linked with -Wl,--as-needed, these libraries wouldn't be linked, causing them to fail. Patch contributed by İsmail Dönmez. llvm-svn: 212958
2014-07-15 01:00:29 +08:00
check_library_exists(pthread pthread_once "" LIBCXXABI_HAS_PTHREAD_LIB)
[libcxxabi] Add __cxa_thread_atexit for TLS support on Linux. Summary: Fixes PR21738. The implementation for this is handled by __cxa_thread_atexit_impl, which is supplied by libc. More information: https://sourceware.org/glibc/wiki/Destructor%20support%20for%20thread_local%20variables Reviewers: mclow.lists, EricWF, jroelofs Reviewed By: jroelofs Subscribers: majnemer, cfe-commits Differential Revision: http://reviews.llvm.org/D6708 llvm-svn: 224477
2014-12-18 08:03:57 +08:00
check_library_exists(c __cxa_thread_atexit_impl ""
LIBCXXABI_HAS_CXA_THREAD_ATEXIT_IMPL)