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[libcxx] Add support for linking libc++ against a static ABI library.

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Summary:
This patch add the CMake option `LIBCXX_ENABLE_STATIC_ABI_LIBRARY` which, when enabled, will link libc++ against the static version of the ABI library.


Reviewers: mclow.lists, jroelofs, danalbert

Reviewed By: danalbert

Subscribers: compnerd, cfe-commits

Differential Revision: http://reviews.llvm.org/D8017

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@231076 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Eric Fiselier
2015-03-03 15:59:51 +00:00
parent 3ff0531e95
commit c0b166e944
4 changed files with 35 additions and 6 deletions
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21
lib/CMakeLists.txt
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@@ -34,22 +34,33 @@ else()
)
endif()
#if LIBCXX_CXX_ABI_LIBRARY_PATH is defined we want to add it to the search path.
if (DEFINED LIBCXX_CXX_ABI_LIBRARY_PATH)
target_link_libraries(cxx "-L${LIBCXX_CXX_ABI_LIBRARY_PATH}")
endif()
if (DEFINED LIBCXX_CXX_ABI_DEPS)
add_dependencies(cxx LIBCXX_CXX_ABI_DEPS)
endif()
set(libraries "")
if (LIBCXX_ENABLE_STATIC_ABI_LIBRARY)
# TODO(ericwf): Remove these GNU specific linker flags and let CMake do the
# configuration. This will be more portable.
list(APPEND libraries "-Wl,--whole-archive" "-Wl,-Bstatic")
list(APPEND libraries "${LIBCXX_CXX_ABI_LIBRARY}")
list(APPEND libraries "-Wl,-Bdynamic" "-Wl,--no-whole-archive")
else()
list(APPEND libraries "${LIBCXX_CXX_ABI_LIBRARY}")
endif()
# Generate library list.
set(libraries ${LIBCXX_CXX_ABI_LIBRARY})
append_if(libraries LIBCXX_HAS_PTHREAD_LIB pthread)
append_if(libraries LIBCXX_HAS_C_LIB c)
append_if(libraries LIBCXX_HAS_M_LIB m)
append_if(libraries LIBCXX_HAS_RT_LIB rt)
append_if(libraries LIBCXX_HAS_GCC_S_LIB gcc_s)
#if LIBCXX_CXX_ABI_LIBRARY_PATH is defined we want to add it to the search path.
if (DEFINED LIBCXX_CXX_ABI_LIBRARY_PATH)
target_link_libraries(cxx "-L${LIBCXX_CXX_ABI_LIBRARY_PATH}")
endif()
target_link_libraries(cxx ${libraries})
# Setup flags.