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kbuild: make samples depend on headers_install

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Olof's build test setup keeps failing to compile arm64 kernels
because of a toolchain that uses outdated kernel headers:

/work/build/batch/samples/seccomp/bpf-fancy.c:13:27: fatal error: linux/seccomp.h: No such file or directory

This is of course something he could change, but it also indicates
that others may run into the same problem. Running 'make headers_install'
avoids the issue by ensuring that the kernel headers are put into
the $(objdir)/usr/include path before we build the samples.

The same problem happened for the Documentation build in the
past and was fixed up with commit 8e2faea877 ("Make Documenation
depend on headers_install"). This adds an identical Makefile dependency
for the samples/ subdirectory.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Michal Marek <mmarek@suse.com>
This commit is contained in:
Arnd Bergmann 2016-07-04 16:39:35 +02:00 committed by Michal Marek
parent db547ef190
commit ddea05fa14
1 changed files with 1 additions and 1 deletions
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Makefile
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@ -1620,7 +1620,7 @@ endif
$(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
$(build)=$(build-dir)
# Make sure the latest headers are built for Documentation
Documentation/: headers_install
Documentation/ samples/: headers_install
%/: prepare scripts FORCE
$(cmd_crmodverdir)
$(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \