From 5a2029d3d777a82094367e3442b713856c4c9422 Mon Sep 17 00:00:00 2001
From: Martin Kroeker <martin@ruby.chemie.uni-freiburg.de>
Date: Sat, 24 Oct 2026 20:39:52 +0200
Subject: [PATCH] Ensure symbol visibility for the C LAPACK

---
 cmake/lapack.cmake | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/cmake/lapack.cmake b/cmake/lapack.cmake
index 81f0bcd386..15a87e5e06 100644
--- a/cmake/lapack.cmake
+++ b/cmake/lapack.cmake
@@ -1054,5 +1054,5 @@ if (NOT C_LAPACK)
     set_source_files_properties(${LA_SOURCES} PROPERTIES COMPILE_FLAGS "${LAPACK_FFLAGS} -fno-tree-vectorize")
   endif()
 else ()
-  set_source_files_properties(${LA_SOURCES} PROPERTIES COMPILE_FLAGS "${LAPACK_CFLAGS}")
+  set_source_files_properties(${LA_SOURCES} PROPERTIES COMPILE_FLAGS "${LAPACK_CFLAGS} -fvisibility=default")
 endif ()