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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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kbuild: vdso_install: hide readelf warnings

If 'readelf -n' encounters a note it does not recognize it emits a
warning. This for example happens when inspecting a compat vDSO for
which the main kernel toolchain was not used.
However the relevant build ID note is always readable, so the
warnings are pointless.

Hide the warnings to make it possible to extract build IDs for more
architectures in the future.

Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Reviewed-by: Nicolas Schier <nsc@kernel.org>
Reviewed-by: Nathan Chancellor <nathan@kernel.org>
Link: https://patch.msgid.link/20260331-kbuild-vdso-install-v2-2-606d0dc6beca@weissschuh.net
Signed-off-by: Nicolas Schier <nsc@kernel.org>

authored by

Thomas Weißschuh and committed by
Nicolas Schier ec213747 efa13f43

+1 -1
+1 -1
scripts/Makefile.vdsoinst
··· 21 21 22 22 # Some architectures create .build-id symlinks 23 23 ifneq ($(filter arm s390 sparc x86, $(SRCARCH)),) 24 - build-id-file := $$(shell $(READELF) -n $(1) | sed -n 's@^.*Build ID: \(..\)\(.*\)@\1/\2@p') 24 + build-id-file := $$(shell $(READELF) -n $(1) 2>/dev/null | sed -n 's@^.*Build ID: \(..\)\(.*\)@\1/\2@p') 25 25 link := $(install-dir)/.build-id/$$(build-id-file).debug 26 26 27 27 __default: $$(link)