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[cmake] [libcxxabi] Fix find_path() problems when cross compiling

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When CMAKE_SYSROOT or CMAKE_FIND_ROOT_PATH is set, cmake
recommends setting CMAKE_FIND_ROOT_PATH_MODE_INCLUDE=ONLY
globally which means find_path() always prepends CMAKE_SYSROOT or
CMAKE_FIND_ROOT_PATH to all paths used in the search.

However, these find_path() invocations are looking for paths in
the libcxx and libunwind projects on the host system, not the
target system, which can be done by passing
NO_CMAKE_FIND_ROOT_PATH.

Differential Revision: https://reviews.llvm.org/D41623

llvm-svn: 323145
This commit is contained in:
Don Hinton 2018-01-22 19:41:05 +00:00
parent 46814bee63
commit ae858bf65f
1 changed files with 3 additions and 0 deletions
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3
libcxxabi/CMakeLists.txt
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@ -115,6 +115,7 @@ find_path(
${CMAKE_BINARY_DIR}/${LIBCXXABI_LIBCXX_INCLUDES}
${LIBCXXABI_LIBCXX_INCLUDE_DIRS}
${LLVM_INCLUDE_DIR}/c++/v1
NO_CMAKE_FIND_ROOT_PATH
)
set(LIBCXXABI_LIBCXX_INCLUDES "${LIBCXXABI_LIBCXX_INCLUDES}" CACHE PATH
@ -127,6 +128,7 @@ find_path(
${LIBCXXABI_LIBCXX_INCLUDES}/../
${LIBCXXABI_LIBCXX_SRC_DIRS}
NO_DEFAULT_PATH
NO_CMAKE_FIND_ROOT_PATH
)
if (LIBCXXABI_LIBCXX_PATH STREQUAL "LIBCXXABI_LIBCXX_PATH-NOTFOUND")
@ -425,6 +427,7 @@ if (LIBCXXABI_USE_LLVM_UNWINDER OR LLVM_NATIVE_ARCH MATCHES ARM)
${LLVM_MAIN_SRC_DIR}/projects/libunwind/include
${LLVM_MAIN_SRC_DIR}/runtimes/libunwind/include
NO_DEFAULT_PATH
NO_CMAKE_FIND_ROOT_PATH
)
if (LIBCXXABI_LIBUNWIND_INCLUDES_INTERNAL STREQUAL "LIBCXXABI_LIBUNWIND_INCLUDES_INTERNAL-NOTFOUND")