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| author | Nicolas Pitre <nicolas.pitre@linaro.org> | 2016-04-22 15:25:00 -0400 |
|---|---|---|
| committer | Michal Marek <mmarek@suse.com> | 2016-04-26 10:39:19 +0200 |
| commit | 2441e78b19192cd9ea1ce93027a5732a2117f026 (patch) | |
| tree | 64d942caf22837e283f6be06e63e71aabe7ea4bc /Makefile | |
| parent | ba79d401f1aee52186ff09607e9405cfb805307d (diff) | |
| download | linux-2441e78b19192cd9ea1ce93027a5732a2117f026.tar.gz linux-2441e78b19192cd9ea1ce93027a5732a2117f026.tar.bz2 linux-2441e78b19192cd9ea1ce93027a5732a2117f026.zip | |
kbuild: better abstract vmlinux sequential prerequisites
When CONFIG_TRIM_UNUSED_KSYMS=y and CONFIG_BUILD_DOCSRC=y it is possible
to get the following error:
ERROR: "cn_del_callback" [Documentation/connector/cn_test.ko] undefined!
ERROR: "cn_add_callback" [Documentation/connector/cn_test.ko] undefined!
ERROR: "cn_netlink_send" [Documentation/connector/cn_test.ko] undefined!
../scripts/Makefile.modpost:91: recipe for target '__modpost' failed
It is not sufficient to do "vmlinux-dirs += Documentation" as this also
depends on the headers_check target, and all of this needs to be done
before adjust_autoksyms.sh is executed.
Let's sort this out by gathering those sequential prerequisites in a make
target of their own, separate from the vmlinux target. And by doing so,
the special autoksyms_recursive target is no longer needed.
Signed-off-by: Nicolas Pitre <nico@linaro.org>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Tested-by: Randy Dunlap <rdunlap@infradead.org>
Diffstat (limited to 'Makefile')
| -rw-r--r-- | Makefile | 31 |
1 files changed, 15 insertions, 16 deletions
@@ -926,17 +926,11 @@ export KBUILD_ALLDIRS := $(sort $(filter-out arch/%,$(vmlinux-alldirs)) arch Doc vmlinux-deps := $(KBUILD_LDS) $(KBUILD_VMLINUX_INIT) $(KBUILD_VMLINUX_MAIN) -# Final link of vmlinux - cmd_link-vmlinux = $(CONFIG_SHELL) $< $(LD) $(LDFLAGS) $(LDFLAGS_vmlinux) -quiet_cmd_link-vmlinux = LINK $@ - -# Include targets which we want to -# execute if the rest of the kernel build went well. -vmlinux: scripts/link-vmlinux.sh $(vmlinux-deps) FORCE -ifdef CONFIG_TRIM_UNUSED_KSYMS - $(Q)$(CONFIG_SHELL) $(srctree)/scripts/adjust_autoksyms.sh \ - "$(MAKE) KBUILD_MODULES=1 -f $(srctree)/Makefile autoksyms_recursive" -endif +# Include targets which we want to execute sequentially if the rest of the +# kernel build went well. If CONFIG_TRIM_UNUSED_KSYMS is set, this might be +# evaluated more than once. +PHONY += vmlinux_prereq +vmlinux_prereq: $(vmlinux-deps) FORCE ifdef CONFIG_HEADERS_CHECK $(Q)$(MAKE) -f $(srctree)/Makefile headers_check endif @@ -946,17 +940,22 @@ endif ifdef CONFIG_GDB_SCRIPTS $(Q)ln -fsn `cd $(srctree) && /bin/pwd`/scripts/gdb/vmlinux-gdb.py endif - +$(call if_changed,link-vmlinux) - -autoksyms_recursive: $(vmlinux-deps) +ifdef CONFIG_TRIM_UNUSED_KSYMS $(Q)$(CONFIG_SHELL) $(srctree)/scripts/adjust_autoksyms.sh \ - "$(MAKE) KBUILD_MODULES=1 -f $(srctree)/Makefile autoksyms_recursive" -PHONY += autoksyms_recursive + "$(MAKE) KBUILD_MODULES=1 -f $(srctree)/Makefile vmlinux_prereq" +endif # standalone target for easier testing include/generated/autoksyms.h: FORCE $(Q)$(CONFIG_SHELL) $(srctree)/scripts/adjust_autoksyms.sh true +# Final link of vmlinux + cmd_link-vmlinux = $(CONFIG_SHELL) $< $(LD) $(LDFLAGS) $(LDFLAGS_vmlinux) +quiet_cmd_link-vmlinux = LINK $@ + +vmlinux: scripts/link-vmlinux.sh vmlinux_prereq FORCE + +$(call if_changed,link-vmlinux) + # Build samples along the rest of the kernel ifdef CONFIG_SAMPLES vmlinux-dirs += samples |