[llvm] 309dcc1 - [gn] port a80e65e00ada7

[Nico Weber via llvm-commits]

Author: Nico Weber
Date: 2024-01-22T14:19:29-05:00
New Revision: 309dcc112b1d3f0a24ea67e5b0377c649637260f

URL: https://github.com/llvm/llvm-project/commit/309dcc112b1d3f0a24ea67e5b0377c649637260f
DIFF: https://github.com/llvm/llvm-project/commit/309dcc112b1d3f0a24ea67e5b0377c649637260f.diff

LOG: [gn] port a80e65e00ada7

See here for context:
https://github.com/llvm/llvm-project/pull/65534#issuecomment-1904633461

Added: 
    

Modified: 
    llvm/utils/gn/secondary/libcxx/src/BUILD.gn

Removed: 
    


################################################################################
diff  --git a/llvm/utils/gn/secondary/libcxx/src/BUILD.gn b/llvm/utils/gn/secondary/libcxx/src/BUILD.gn
index 095cd5bb5b7cc1e..79504775ea21f56 100644
--- a/llvm/utils/gn/secondary/libcxx/src/BUILD.gn
+++ b/llvm/utils/gn/secondary/libcxx/src/BUILD.gn
@@ -56,6 +56,9 @@ config("cxx_config") {
     "_LIBCPP_BUILDING_LIBRARY",
     "_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER",
   ]
+  if (current_os != "win") {
+    defines += [ "LIBCXX_BUILDING_LIBCXXABI" ]
+  }
   if (target_os == "win") {
     cflags += [ "/Zl" ]
     defines += [