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-rw-r--r--libcxx/cmake/Modules/HandleLibCXXABI.cmake2
1 files changed, 1 insertions, 1 deletions
diff --git a/libcxx/cmake/Modules/HandleLibCXXABI.cmake b/libcxx/cmake/Modules/HandleLibCXXABI.cmake
index ac426979419..73723e3559b 100644
--- a/libcxx/cmake/Modules/HandleLibCXXABI.cmake
+++ b/libcxx/cmake/Modules/HandleLibCXXABI.cmake
@@ -88,7 +88,7 @@ elseif ("${LIBCXX_CXX_ABI_LIBNAME}" STREQUAL "libcxxabi")
# Assume c++abi is installed in the system, rely on -lc++abi link flag.
set(CXXABI_LIBNAME "c++abi")
endif()
- setup_abi_lib(""
+ setup_abi_lib("-DLIBCXX_BUILDING_LIBCXXABI"
${CXXABI_LIBNAME} "cxxabi.h;__cxxabi_config.h" ""
)
elseif ("${LIBCXX_CXX_ABI_LIBNAME}" STREQUAL "libcxxrt")
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