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

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Add CMake build and fix major Linux blockers. llvm-svn: 121510
2010-12-11 03:47:54 +08:00
include(CheckLibraryExists)
[CMake][libcxx] Use check_c_compiler_flag to check for nodefaultlibs We're using -nodefaultlibs to avoid the dependency on C++ library when using check_cxx_compiler_flag, and as such we cannot use check_cxx_compiler_flag to check the availability of -nodefaultlibs itself. llvm-svn: 299711
2017-04-07 05:06:33 +08:00
include(CheckCCompilerFlag)
Add CMake build and fix major Linux blockers. llvm-svn: 121510
2010-12-11 03:47:54 +08:00
include(CheckCXXCompilerFlag)
libc++: perform configuration checks with -nodefaultlibs We're compiling libc++ with -nodefaultlibs, so we should also pass this option during the configuration checks to ensure those checks are consistent with the actual build. The primary motivation here is to ease cross-compilation against a non-standard set of C++ libraries. Previously, the configuration checks would attempt to link against the standard C++ libraries, which would cause link failures when cross-compiling, even though the actual library link would go through correctly (because of the use of -nodefaultlibs and explicitly specifying any needed libraries). This is more correct even ignoring the motivation, however. Patch by Shoaib Meenai! llvm-svn: 280015
2016-08-30 05:33:37 +08:00
build: dont detect libraries for Windows Hard code the defaults for Windows for the time being. The checks really are always going to return the same value. Technically, the pthread linkage is possible, however, it seems better to use the Win32 threading along with the external threading support that we have added. llvm-svn: 290801
2017-01-02 04:20:38 +08:00
if(WIN32 AND NOT MINGW)
# NOTE(compnerd) this is technically a lie, there is msvcrt, but for now, lets
# let the default linking take care of that.
set(LIBCXX_HAS_C_LIB NO)
else()
check_library_exists(c fopen "" LIBCXX_HAS_C_LIB)
endif()
libc++: perform configuration checks with -nodefaultlibs We're compiling libc++ with -nodefaultlibs, so we should also pass this option during the configuration checks to ensure those checks are consistent with the actual build. The primary motivation here is to ease cross-compilation against a non-standard set of C++ libraries. Previously, the configuration checks would attempt to link against the standard C++ libraries, which would cause link failures when cross-compiling, even though the actual library link would go through correctly (because of the use of -nodefaultlibs and explicitly specifying any needed libraries). This is more correct even ignoring the motivation, however. Patch by Shoaib Meenai! llvm-svn: 280015
2016-08-30 05:33:37 +08:00
if (NOT LIBCXX_USE_COMPILER_RT)
build: dont detect libraries for Windows Hard code the defaults for Windows for the time being. The checks really are always going to return the same value. Technically, the pthread linkage is possible, however, it seems better to use the Win32 threading along with the external threading support that we have added. llvm-svn: 290801
2017-01-02 04:20:38 +08:00
if(WIN32 AND NOT MINGW)
set(LIBCXX_HAS_GCC_S_LIB NO)
else()
check_library_exists(gcc_s __gcc_personality_v0 "" LIBCXX_HAS_GCC_S_LIB)
endif()
libc++: perform configuration checks with -nodefaultlibs We're compiling libc++ with -nodefaultlibs, so we should also pass this option during the configuration checks to ensure those checks are consistent with the actual build. The primary motivation here is to ease cross-compilation against a non-standard set of C++ libraries. Previously, the configuration checks would attempt to link against the standard C++ libraries, which would cause link failures when cross-compiling, even though the actual library link would go through correctly (because of the use of -nodefaultlibs and explicitly specifying any needed libraries). This is more correct even ignoring the motivation, however. Patch by Shoaib Meenai! llvm-svn: 280015
2016-08-30 05:33:37 +08:00
endif()
# libc++ 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.
[CMake][libcxx] Use check_c_compiler_flag to check for nodefaultlibs We're using -nodefaultlibs to avoid the dependency on C++ library when using check_cxx_compiler_flag, and as such we cannot use check_cxx_compiler_flag to check the availability of -nodefaultlibs itself. llvm-svn: 299711
2017-04-07 05:06:33 +08:00
check_c_compiler_flag(-nodefaultlibs LIBCXX_SUPPORTS_NODEFAULTLIBS_FLAG)
libc++: perform configuration checks with -nodefaultlibs We're compiling libc++ with -nodefaultlibs, so we should also pass this option during the configuration checks to ensure those checks are consistent with the actual build. The primary motivation here is to ease cross-compilation against a non-standard set of C++ libraries. Previously, the configuration checks would attempt to link against the standard C++ libraries, which would cause link failures when cross-compiling, even though the actual library link would go through correctly (because of the use of -nodefaultlibs and explicitly specifying any needed libraries). This is more correct even ignoring the motivation, however. Patch by Shoaib Meenai! llvm-svn: 280015
2016-08-30 05:33:37 +08:00
if (LIBCXX_SUPPORTS_NODEFAULTLIBS_FLAG)
set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} -nodefaultlibs")
if (LIBCXX_HAS_C_LIB)
list(APPEND CMAKE_REQUIRED_LIBRARIES c)
endif ()
if (LIBCXX_USE_COMPILER_RT)
[CMake][libcxx] Use builtins rather than gcc_s when compiler-rt is requested When compiler-rt is requested, we should attempt to link compiler-rt builtins library rather than gcc_s. Differential Revision: https://reviews.llvm.org/D31617 llvm-svn: 299599
2017-04-06 06:53:05 +08:00
list(APPEND CMAKE_REQUIRED_FLAGS -rtlib=compiler-rt)
find_compiler_rt_library(builtins LIBCXX_BUILTINS_LIBRARY)
list(APPEND CMAKE_REQUIRED_LIBRARIES "${LIBCXX_BUILTINS_LIBRARY}")
libc++: perform configuration checks with -nodefaultlibs We're compiling libc++ with -nodefaultlibs, so we should also pass this option during the configuration checks to ensure those checks are consistent with the actual build. The primary motivation here is to ease cross-compilation against a non-standard set of C++ libraries. Previously, the configuration checks would attempt to link against the standard C++ libraries, which would cause link failures when cross-compiling, even though the actual library link would go through correctly (because of the use of -nodefaultlibs and explicitly specifying any needed libraries). This is more correct even ignoring the motivation, however. Patch by Shoaib Meenai! llvm-svn: 280015
2016-08-30 05:33:37 +08:00
elseif (LIBCXX_HAS_GCC_S_LIB)
list(APPEND CMAKE_REQUIRED_LIBRARIES gcc_s)
endif ()
Try to fix the libcxx build with mingw64 Summary: mingw64 has lots of default libs that libc++ and its test programs should link against. With this patch, cmake now runs successfully with GCC on Windows. Reviewers: mati865, EricWF Subscribers: mgorny, cfe-commits Differential Revision: https://reviews.llvm.org/D31518 llvm-svn: 299144
2017-03-31 08:34:05 +08:00
if (MINGW)
# Mingw64 requires quite a few "C" runtime libraries in order for basic
# programs to link successfully with -nodefaultlibs.
list(APPEND CMAKE_REQUIRED_LIBRARIES mingw32 gcc gcc_eh mingwex msvcrt gcc)
endif()
libc++: perform configuration checks with -nodefaultlibs We're compiling libc++ with -nodefaultlibs, so we should also pass this option during the configuration checks to ensure those checks are consistent with the actual build. The primary motivation here is to ease cross-compilation against a non-standard set of C++ libraries. Previously, the configuration checks would attempt to link against the standard C++ libraries, which would cause link failures when cross-compiling, even though the actual library link would go through correctly (because of the use of -nodefaultlibs and explicitly specifying any needed libraries). This is more correct even ignoring the motivation, however. Patch by Shoaib Meenai! llvm-svn: 280015
2016-08-30 05:33:37 +08:00
if (CMAKE_C_FLAGS MATCHES -fsanitize OR CMAKE_CXX_FLAGS MATCHES -fsanitize)
set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} -fno-sanitize=all")
endif ()
Fix libc++ configuration with -fsanitize-coverage Summary: a recent change (r280015) in libc++ configuration broke LibFuzzer bot: http://lab.llvm.org:8011/builders/sanitizer-x86_64-linux-fuzzer/builds/12245 It's not restricted just to that bot; any code that uses the sanitize coverage and configures libc++ hits it. This CL fixes the issue. Reviewers: compnerd Subscribers: aizatsky Differential Revision: https://reviews.llvm.org/D24116 llvm-svn: 280335
2016-09-01 09:38:32 +08:00
if (CMAKE_C_FLAGS MATCHES -fsanitize-coverage OR CMAKE_CXX_FLAGS MATCHES -fsanitize-coverage)
set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} -fno-sanitize-coverage=edge,trace-cmp,indirect-calls,8bit-counters")
endif ()
libc++: perform configuration checks with -nodefaultlibs We're compiling libc++ with -nodefaultlibs, so we should also pass this option during the configuration checks to ensure those checks are consistent with the actual build. The primary motivation here is to ease cross-compilation against a non-standard set of C++ libraries. Previously, the configuration checks would attempt to link against the standard C++ libraries, which would cause link failures when cross-compiling, even though the actual library link would go through correctly (because of the use of -nodefaultlibs and explicitly specifying any needed libraries). This is more correct even ignoring the motivation, however. Patch by Shoaib Meenai! llvm-svn: 280015
2016-08-30 05:33:37 +08:00
endif ()
build: dont detect libraries for Windows Hard code the defaults for Windows for the time being. The checks really are always going to return the same value. Technically, the pthread linkage is possible, however, it seems better to use the Win32 threading along with the external threading support that we have added. llvm-svn: 290801
2017-01-02 04:20:38 +08:00
if(NOT WIN32 OR MINGW)
include(CheckLibcxxAtomic)
endif()
Add CMake build and fix major Linux blockers. llvm-svn: 121510
2010-12-11 03:47:54 +08:00
# Check compiler flags
Reapply working parts of CMake cleanup. This patch adds the working parts of r243503. The difference with this patch is that it doesn't include the HandleLLVMOptions.cmake file. llvm-svn: 243698
2015-07-31 06:30:34 +08:00
[libcxx] Add support for LLVM_USE_SANITIZER to libcxx when being built standalone and in-tree Summary: This patch adds support for LLVM_USE_SANITIZER when being built in-tree and standalone. This patch does the following things: 1. define the LLVM_USE_SANITIZER option to "" when being built standalone. This also helps show we support it. 2. Translate LLVM_USE_SANITIZER when standalone in a very similar way done in llvm/cmake/HandleLLVMOptions.cmake. 3. Add config.llvm_use_sanitizer to lit.site.cfg.in 4. Add code to translate config.llvm_use_sanitizer's value into the needed compile flags in lit.cfg. Currently lit.cfg assumes that that the compiler supports '-fno-omit-frame-pointer' while CMakeLists.txt actually checks to see if its supported. We could pass this information to lit but I'm not sure its needed. Reviewers: mclow.lists, danalbert Reviewed By: danalbert Subscribers: cfe-commits Differential Revision: http://reviews.llvm.org/D4949 llvm-svn: 215872
2014-08-18 13:03:46 +08:00
check_cxx_compiler_flag(/WX LIBCXX_HAS_WX_FLAG)
check_cxx_compiler_flag(/WX- LIBCXX_HAS_NO_WX_FLAG)
check_cxx_compiler_flag(/EHsc LIBCXX_HAS_EHSC_FLAG)
check_cxx_compiler_flag(/EHs- LIBCXX_HAS_NO_EHS_FLAG)
check_cxx_compiler_flag(/EHa- LIBCXX_HAS_NO_EHA_FLAG)
check_cxx_compiler_flag(/GR- LIBCXX_HAS_NO_GR_FLAG)
Add CMake build and fix major Linux blockers. llvm-svn: 121510
2010-12-11 03:47:54 +08:00
Reapply working parts of CMake cleanup. This patch adds the working parts of r243503. The difference with this patch is that it doesn't include the HandleLLVMOptions.cmake file. llvm-svn: 243698
2015-07-31 06:30:34 +08:00
Add CMake build and fix major Linux blockers. llvm-svn: 121510
2010-12-11 03:47:54 +08:00
# Check libraries
build: dont detect libraries for Windows Hard code the defaults for Windows for the time being. The checks really are always going to return the same value. Technically, the pthread linkage is possible, however, it seems better to use the Win32 threading along with the external threading support that we have added. llvm-svn: 290801
2017-01-02 04:20:38 +08:00
if(WIN32 AND NOT MINGW)
# TODO(compnerd) do we want to support an emulation layer that allows for the
# use of pthread-win32 or similar libraries to emulate pthreads on Windows?
set(LIBCXX_HAS_PTHREAD_LIB NO)
set(LIBCXX_HAS_M_LIB NO)
set(LIBCXX_HAS_RT_LIB NO)
else()
check_library_exists(pthread pthread_create "" LIBCXX_HAS_PTHREAD_LIB)
check_library_exists(m ccos "" LIBCXX_HAS_M_LIB)
check_library_exists(rt clock_gettime "" LIBCXX_HAS_RT_LIB)
endif()