kbuild: improve check-symlink (dcc2da1a) · Commits · 戴 / test

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>

Makefile

+5 −0

Original line number	Diff line number	Diff line
		@@ -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

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