Commit 1747269a authored Oct 03, 2019 by Masahiro Yamada

modpost: do not parse vmlinux for external module builds



When building external modules, $(objtree)/Module.symvers is scanned
for symbol information of vmlinux and in-tree modules.

Additionally, vmlinux is parsed if it exists in $(objtree)/.
This is totally redundant since all the necessary information is
contained in $(objtree)/Module.symvers.

Do not parse vmlinux at all for external module builds. This makes
sense because vmlinux is deleted by 'make clean'.

'make clean' leaves all the build artifacts for building external
modules. vmlinux is unneeded for that.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>

parent fab546e6

scripts/Makefile.modpost

+5 −3

Original line number	Diff line number	Diff line
		@@ -67,7 +67,11 @@ __modpost:

		else

		ifneq ($(KBUILD_EXTMOD),)
		MODPOST += $(subst -i,-n,$(filter -i,$(MAKEFLAGS))) -s -T -

		ifeq ($(KBUILD_EXTMOD),)
		MODPOST += $(wildcard vmlinux)
		else

		# set src + obj - they may be used in the modules's Makefile
		obj := $(KBUILD_EXTMOD)
		@@ -78,8 +82,6 @@ include $(if $(wildcard $(KBUILD_EXTMOD)/Kbuild), \
		$(KBUILD_EXTMOD)/Kbuild, $(KBUILD_EXTMOD)/Makefile)
		endif

		MODPOST += $(subst -i,-n,$(filter -i,$(MAKEFLAGS))) -s -T - $(wildcard vmlinux)

		# find all modules listed in modules.order
		modules := $(sort $(shell cat $(MODORDER)))

Admin message