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kbuild: improve check-symlink 

o if include/asm point to a nonexisting directory remove the asm symlink
o if include/asm is a directory error out

This fixes a situation where one could be left with a symlink
to asm-x86 but that directory no longer exist and thus the build
would error out.

include/asm may be a directory if the kernel tree has been copied

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
This commit is contained in:
Sam Ravnborg 2008-10-25 22:58:23 +02:00
parent 46dca86cb9
commit dcc2da1a96
1 changed files with 5 additions and 0 deletions
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5
Makefile
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@ -961,6 +961,7 @@ export CPPFLAGS_vmlinux.lds += -P -C -U$(ARCH)
# The asm symlink changes when $(ARCH) changes.
# Detect this and ask user to run make mrproper
# If asm is a stale symlink (point to dir that does not exist) remove it
define check-symlink
set -e; \
if [ -L include/asm ]; then \
@ -970,6 +971,10 @@ define check-symlink
echo " set ARCH or save .config and run 'make mrproper' to fix it"; \
exit 1; \
fi; \
test -e $$asmlink || rm include/asm; \
elif [ -d include/asm ]; then \
echo "ERROR: $@ is a directory but a symlink was expected";\
exit 1; \
fi
endef