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[libc++] Don't override LIBCXX_CXX_ABI_INCLUDE_PATHS for libcxxrt

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When testing libc++ for our cross-compiled CheriBSD target we specify an
explicit LIBCXX_CXX_ABI_INCLUDE_PATHS for libcxxrt. The hardcoded path
/usr/include/c++/v1 was introduced in 61e89737c5daf7b65341936f88f68efb680cdcd4
and overrides any value passed on the CMake command line. Fix this by using
it as a fallback rather than a fixed default value.

Reviewed By: #libc, ldionne
Differential Revision: https://reviews.llvm.org/D82095
This commit is contained in:
Alex Richardson 2020-06-18 17:07:49 +01:00
parent 3ce0e92f45
commit 7142fef03d
1 changed files with 6 additions and 2 deletions
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8
libcxx/cmake/Modules/HandleLibCXXABI.cmake
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@ -102,7 +102,9 @@ if ("${LIBCXX_CXX_ABI_LIBNAME}" STREQUAL "libstdc++" OR
"${_LIBSUPCXX_LIBNAME}" "${_LIBSUPCXX_LIBNAME}" "${_LIBSUPCXX_INCLUDE_FILES}" "bits"
)
elseif ("${LIBCXX_CXX_ABI_LIBNAME}" STREQUAL "libcxxabi")
set(LIBCXX_CXX_ABI_INCLUDE_PATHS "${LIBCXX_SOURCE_DIR}/../libcxxabi/include")
if(NOT LIBCXX_CXX_ABI_INCLUDE_PATHS)
set(LIBCXX_CXX_ABI_INCLUDE_PATHS "${LIBCXX_SOURCE_DIR}/../libcxxabi/include")
endif()
if(LIBCXX_STANDALONE_BUILD AND NOT (LIBCXX_CXX_ABI_INTREE OR HAVE_LIBCXXABI))
set(shared c++abi)
@ -116,7 +118,9 @@ elseif ("${LIBCXX_CXX_ABI_LIBNAME}" STREQUAL "libcxxabi")
"-DLIBCXX_BUILDING_LIBCXXABI"
"${shared}" "${static}" "cxxabi.h;__cxxabi_config.h" "")
elseif ("${LIBCXX_CXX_ABI_LIBNAME}" STREQUAL "libcxxrt")
set(LIBCXX_CXX_ABI_INCLUDE_PATHS "/usr/include/c++/v1")
if(NOT LIBCXX_CXX_ABI_INCLUDE_PATHS)
set(LIBCXX_CXX_ABI_INCLUDE_PATHS "/usr/include/c++/v1")
endif()
setup_abi_lib(
"-DLIBCXXRT"
"cxxrt" "cxxrt" "cxxabi.h;unwind.h;unwind-arm.h;unwind-itanium.h" ""