From d547005f6c2bf6fbee9fe0f4f99bb6ac2d5b04ab Mon Sep 17 00:00:00 2001
From: Slava Zakharin <szakharin@nvidia.com>
Date: Tue, 11 Mar 2025 16:14:53 -0700
Subject: [PATCH] [flang-rt] Enable -funwind-tables so that backtrace works.
 (#130848)

`backtrace` will not show anything unless it can unwind from
Fortran runtime, so it is useful to have this ability even
in the release build.
---
 flang-rt/cmake/modules/AddFlangRT.cmake | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/flang-rt/cmake/modules/AddFlangRT.cmake b/flang-rt/cmake/modules/AddFlangRT.cmake
index c9a180e16163..2292732daba6 100644
--- a/flang-rt/cmake/modules/AddFlangRT.cmake
+++ b/flang-rt/cmake/modules/AddFlangRT.cmake
@@ -198,7 +198,7 @@ function (add_flangrt_library name)
     # Use compiler-specific options to disable exceptions and RTTI.
     if (LLVM_COMPILER_IS_GCC_COMPATIBLE)
       target_compile_options(${tgtname} PRIVATE
-          $<$<COMPILE_LANGUAGE:CXX>:-fno-exceptions -fno-rtti -fno-unwind-tables -fno-asynchronous-unwind-tables>
+          $<$<COMPILE_LANGUAGE:CXX>:-fno-exceptions -fno-rtti -funwind-tables -fno-asynchronous-unwind-tables>
         )
     elseif (MSVC)
       target_compile_options(${tgtname} PRIVATE