diff --git a/_config b/_config
index 04830e4..3bffa37 100644
--- a/_config
+++ b/_config
@@ -3890,6 +3890,13 @@ Macros:
 %product_libs_gcc_ver_libgdruntime4 13
 %gcc_version 13
 
+# 2024-08-08: Prefer gcc-build variants for building.
+# See SR#340895
+%if "%_repository" == "standard"
+Prefer: gcc-build-fortran
+Substitute: gcc-d gcc-build-d
+%endif
+
 %ext_info .gz
 %ext_man .gz