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[compiler-rt] Fix a bug in the cmakelists file when CMAKE_CXX_FLAGS are empty

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Right now, the regex expression will fail if the flags were not set. Instead, we should follow the pattern of other llvm projects and quote the expression, so that it can work even when the flags are not set.

Reviewed By: phosek

Differential Revision: https://reviews.llvm.org/D92586
This commit is contained in:
Stella Stamenova 2020-12-03 10:25:52 -08:00
parent e61a6a229a
commit 1410b72be3
1 changed files with 2 additions and 2 deletions
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4
compiler-rt/CMakeLists.txt
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@ -457,8 +457,8 @@ append_list_if(COMPILER_RT_HAS_NOSTDINCXX_FLAG -nostdinc++ SANITIZER_COMMON_CFLA
append_list_if(COMPILER_RT_HAS_NOSTDLIBXX_FLAG -nostdlib++ SANITIZER_COMMON_LINK_FLAGS)
# Remove -stdlib= which is unused when passing -nostdinc++...
string(REGEX MATCHALL "-stdlib=[a-zA-Z+]*" stdlib_flag ${CMAKE_CXX_FLAGS})
string(REGEX REPLACE "-stdlib=[a-zA-Z+]*" "" CMAKE_CXX_FLAGS ${CMAKE_CXX_FLAGS})
string(REGEX MATCHALL "-stdlib=[a-zA-Z+]*" stdlib_flag "${CMAKE_CXX_FLAGS}")
string(REGEX REPLACE "-stdlib=[a-zA-Z+]*" "" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}")
# ...we need it to build some runtimes and tests so readd it where appropriate.
list(APPEND COMPILER_RT_COMMON_CFLAGS ${stdlib_flag})