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Commitc820f097e0("tools: gnulib: install .m4 file with gl_ prefix") installed gnulib autoconf macros under gl_-prefixed file names. The scheme was later reverted in commitcda598a595, but the previously installed files were never removed from share/aclocal. As aclocal reads the whole directory, stale gl_*.m4 files can override the current unprefixed macros. This breaks elfutils builds on macOS after the gnulib stable-202507 update, resulting in empty #if expressions in the generated ctype.h. Remove the stale files in Host/Uninstall. Host/Install calls it first, so affected build trees are cleaned up automatically on the next gnulib reinstall. Signed-off-by: Josef Schlehofer <pepe.schlehofer@gmail.com> Link: https://github.com/openwrt/openwrt/pull/24759 Signed-off-by: Robert Marko <robimarko@gmail.com>