File: libcxxabi-fix-link-builtins.diff

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llvm-toolchain-20 1%3A20.1.8-1
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if LIBCXXABI_USE_COMPILER_RT=ON, add builtins to libcxxabi library
flags, otherwise add libgcc following how libunwind does the same
Index: llvm-toolchain-snapshot_20~++20241210093637+322eb1a92e6d/libcxxabi/src/CMakeLists.txt
===================================================================
--- llvm-toolchain-snapshot_20~++20241210093637+322eb1a92e6d.orig/libcxxabi/src/CMakeLists.txt
+++ llvm-toolchain-snapshot_20~++20241210093637+322eb1a92e6d/libcxxabi/src/CMakeLists.txt
@@ -81,7 +81,9 @@ if (FUCHSIA)
     add_link_flags("-Wl,--push-state,--as-needed,-lzircon,--pop-state")
 endif()
 
-if (NOT LIBCXXABI_USE_COMPILER_RT)
+if (LIBCXXABI_USE_COMPILER_RT)
+  add_library_flags("${LIBCXXABI_BUILTINS_LIBRARY}")
+else()
   add_library_flags_if(LIBCXXABI_HAS_GCC_LIB gcc)
 endif()
 if (NOT LIBCXXABI_USE_LLVM_UNWINDER)