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-rw-r--r--libcxxabi/CMakeLists.txt7
1 files changed, 6 insertions, 1 deletions
diff --git a/libcxxabi/CMakeLists.txt b/libcxxabi/CMakeLists.txt
index 121b468ddb0..cab24b7fd57 100644
--- a/libcxxabi/CMakeLists.txt
+++ b/libcxxabi/CMakeLists.txt
@@ -114,7 +114,12 @@ endif()
option(LIBCXXABI_ENABLE_ASSERTIONS "Enable assertions independent of build mode." ON)
option(LIBCXXABI_ENABLE_PEDANTIC "Compile with pedantic enabled." ON)
option(LIBCXXABI_ENABLE_WERROR "Fail and stop if a warning is triggered." OFF)
-option(LIBCXXABI_USE_LLVM_UNWINDER "Build and use the LLVM unwinder." OFF)
+set(LIBCXXABI_USE_LLVM_UNWINDER_DEFAULT OFF)
+if (${LLVM_NATIVE_ARCH} MATCHES arm)
+ set(LIBCXXABI_USE_LLVM_UNWINDER_DEFAULT ON)
+endif ()
+option(LIBCXXABI_USE_LLVM_UNWINDER "Build and use the LLVM unwinder."
+ ${LIBCXXABI_USE_LLVM_UNWINDER_DEFAULT})
option(LIBCXXABI_ENABLE_THREADS "Build with threads enabled" ON)
set(LIBCXXABI_GCC_TOOLCHAIN "" CACHE STRING "GCC toolchain for cross compiling.")
set(LIBCXXABI_SYSROOT "" CACHE STRING "Sysroot for cross compiling.")
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