[Buildroot] [PATCH v2 2/2] Makefile: add check of binaries architecture
Yann E. MORIN
yann.morin.1998 at free.fr
Sun Mar 12 20:42:51 UTC 2017
Arnout, All,
On 2017-03-12 21:27 +0100, Arnout Vandecappelle spake thusly:
> On 12-03-17 18:49, Thomas Petazzoni wrote:
>
> [snip]
> > +READELF_ARCH_NAME = $(call qstrip,$(BR2_READELF_ARCH_NAME))
> > +
> > +ifneq ($(READELF_ARCH_NAME),)
>
> We set it for all arches, so this is never empty. Except when we forget to set
> it, but in that case we probably want this thing to be executed so we notice.
>
> > +define CHECK_BIN_ARCH
> > + support/scripts/check-bin-arch $(TARGET_DIR) \
> > + $(TARGET_CROSS) "$(READELF_ARCH_NAME)"
> > +endef
> > +TARGET_FINALIZE_HOOKS += CHECK_BIN_ARCH
> > +endif
>
> It would be nice to do it immediately after package install, so it becomes a
> package error rather than some post-build error that is more difficult to
> localise. Of course, with Yann's suggestion it would still report which package
> was the culprit, but I don't think it would show up in the autobuild results
> under the right package.
>
> To avoid too much overhead rechecking files all the time, it could be done as
> part of step_pkg_size_end which iterates over the files installed in target for
> that particular package. It would make the code a little more complicated,
> though, and perhaps also slower.
Or it could be a step after the step_pkg_size_end, which would basically
do:
sed -r -e "/^${pkg},(.+)$/!d; s//\1/;" "${BUILD_DIR}/packages-file-list.txt
to get the list of file installed by the current package.
Of course, that would only really and cleanly work from a clean build.
> > + farchname=$(${TARGET_CROSS}readelf -h ${f} | \
Please be sure to run it under the C locale, to be sure we can find what
we are looking for.
> > + grep '^ Machine:' | \
> > + sed 's/^ Machine: *\(.*\)/\1/')
>
> Why not the simpler sed -n '/^ Machine: *\(.*\)/s//\1/p' instead of the extra
> grep?
Or a bit easier to read (at least for me):
readelf [..] |sed -r -e '/^ Machine: +(.+)/!d; s//\1/;'
Regards,
Yann E. MORIN.
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