check-uapi: use dummy libc includes

Based on Thomas Weißschuh's series to kernel headers to no longer require
an installed libc when build testing the uapi headers, the same can now
be done for the scripts/check-uapi.sh script.

The only required change here is to add the  usr/dummy-include include
path.

Link: https://lore.kernel.org/lkml/20260227-kbuild-uapi-libc-v1-0-c17de0d19776@weissschuh.net/
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Thomas Weißschuh <linux@weissschuh.net>
Acked-by: Nathan Chancellor <nathan@kernel.org>
Link: https://patch.msgid.link/20260306163309.2015837-4-arnd@kernel.org
Signed-off-by: Nicolas Schier <nsc@kernel.org>

diff --git a/scripts/check-uapi.sh b/scripts/check-uapi.sh
index e4d120eb09e340fd3eaa6e5c48b8900e51febccc..c8beec58871c9f82cdf42d61d518f0a523b9841b 100755 (executable)
--- a/scripts/check-uapi.sh
+++ b/scripts/check-uapi.sh
@@ -191,6 +191,7 @@ do_compile() {
                  -fno-eliminate-unused-debug-types \
                  -g \
                  "-I${inc_dir}" \
+                 "-Iusr/dummy-include" \
                  -include "$header" \
                  -
 }