https://gcc.gnu.org/g:3bc96cf6b3ba4579c2bdfe6a8c4404052c0c0353
commit 3bc96cf6b3ba4579c2bdfe6a8c4404052c0c0353 Author: Alexandre Oliva <ol...@adacore.com> Date: Thu May 8 02:18:16 2025 -0300 vxworks: undefine TARGET_FORTIFY_SOURCE_DEFAULT_LEVEL config.gcc arranges for vxworks 7r2+ targets to include linux.h, because of the similarity, but linux.h defines TARGET_FORTIFY_SOURCE_DEFAULT_LEVEL to a function declared in linux-protos.h, and defined in linux.cc, neither of which vxworks targets include. Undefine it in vxworks.h. for gcc/ChangeLog * config/vxworks.h (TARGET_FORTIFY_SOURCE_DEFAULT_LEVEL): Undefine. Diff: --- gcc/config/vxworks.h | 3 +++ 1 file changed, 3 insertions(+) diff --git a/gcc/config/vxworks.h b/gcc/config/vxworks.h index 204a8e000d40..1ad4c1553ba9 100644 --- a/gcc/config/vxworks.h +++ b/gcc/config/vxworks.h @@ -433,3 +433,6 @@ extern void vxworks_emit_call_builtin___clear_cache (rtx begin, rtx end); so silence the warning (instead of passing -flinker-output=nolto-rel). */ #undef LTO_PLUGIN_SPEC #define LTO_PLUGIN_SPEC "%{!mrtp:-plugin-opt=-linker-output-auto-nolto-rel}" + +/* Undo the linux.h definition. */ +#undef TARGET_FORTIFY_SOURCE_DEFAULT_LEVEL