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

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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)
# 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)
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(-fPIC LIBCXXABI_HAS_FPIC_FLAG)
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(-nodefaultlibs LIBCXXABI_HAS_NODEFAULTLIBS_FLAG)
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)
check_cxx_compiler_flag(-Wno-unused-function LIBCXXABI_HAS_WNO_UNUSED_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)
[CMake] Use -std=c++11 if supported Summary: This patch adds a check for if -std=c++11 is a supported flag, and adds it to CMAKE_CXX_FLAGS if it is supported. Reviewers: EricWF Subscribers: cfe-commits Differential Revision: https://reviews.llvm.org/D24007 llvm-svn: 280021
2016-08-30 06:12:21 +08:00
check_cxx_compiler_flag(-std=c++11 LIBCXXABI_HAS_STD_CXX11)
if(LIBCXXABI_HAS_STD_CXX11)
[CMake] Trying to fix the bots I broke See: http://lab.llvm.org:8011/builders/libcxx-libcxxabi-x86_64-linux-ubuntu-cxx1z/builds/981/steps/build.libcxxabi/logs/stdio llvm-svn: 280023
2016-08-30 06:26:00 +08:00
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11")
[CMake] Use -std=c++11 if supported Summary: This patch adds a check for if -std=c++11 is a supported flag, and adds it to CMAKE_CXX_FLAGS if it is supported. Reviewers: EricWF Subscribers: cfe-commits Differential Revision: https://reviews.llvm.org/D24007 llvm-svn: 280021
2016-08-30 06:12:21 +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 libraries
Replace cmake check for printf with a check for fopen. Printf is a builtin, and the check fails with -Werror because of a clang warning about an incompatible redeclaration. llvm-svn: 255186
2015-12-10 08:44:42 +08:00
check_library_exists(c fopen "" LIBCXXABI_HAS_C_LIB)
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)
libc++abi: add a top level option for using CompilerRT Add an option to opt into compiler-rt instead of libgcc. This option defaults to OFF to avoid a behaviour change. It is not possible to mix and match different runtime libraries. Disabling this requires that libc++ is built accordingly. This knob is particularly useful for targets that are GCC by default (i.e. Linux). llvm-svn: 275505
2016-07-15 08:49:42 +08:00
if (NOT LIBCXXABI_USE_COMPILER_RT)
check_library_exists(gcc_s __gcc_personality_v0 "" LIBCXXABI_HAS_GCC_S_LIB)
endif ()
[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)