path: root/Makefile
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authorMasahiro Yamada <yamada.masahiro@socionext.com>2019-08-02 19:23:58 +0900
committerMasahiro Yamada <yamada.masahiro@socionext.com>2019-08-10 01:40:25 +0900
commit47801c97deb71b9e279c15a02a44cf00aa11e7d9 (patch)
tree645ba10bf5d721b354965ce0d7a151ba7e33a4fb /Makefile
parente21a712a9685488f5ce80495b37b9fdbe96c230d (diff)
kbuild: revive single target %.ko
I removed the single target %.ko in commit ff9b45c55b26 ("kbuild: modpost: read modules.order instead of $(MODVERDIR)/*.mod") because the modpost stage does not work reliably. For instance, the module dependency, modversion, etc. do not work if we lack symbol information from the other modules. Yet, some people still want to build only one module in their interest, and it may be still useful if it is used within those limitations. Fixes: ff9b45c55b26 ("kbuild: modpost: read modules.order instead of $(MODVERDIR)/*.mod") Reported-by: Don Brace <don.brace@microsemi.com> Reported-by: Arend Van Spriel <arend.vanspriel@broadcom.com> Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Diffstat (limited to 'Makefile')
1 files changed, 11 insertions, 0 deletions
diff --git a/Makefile b/Makefile
index 23cdf1f41364..d1f35e32edc7 100644
--- a/Makefile
+++ b/Makefile
@@ -1002,6 +1002,8 @@ endif
PHONY += prepare0
+export MODORDER := $(if $(KBUILD_EXTMOD),$(KBUILD_EXTMOD)/)modules.order
ifeq ($(KBUILD_EXTMOD),)
core-y += kernel/ certs/ mm/ fs/ ipc/ security/ crypto/ block/
@@ -1771,6 +1773,15 @@ build-dir = $(patsubst %/,%,$(dir $(build-target)))
$(Q)$(MAKE) $(build)=$(build-dir) $(build-target)
%.symtypes: prepare FORCE
$(Q)$(MAKE) $(build)=$(build-dir) $(build-target)
+ifeq ($(KBUILD_EXTMOD),)
+# For the single build of an in-tree module, use a temporary file to avoid
+# the situation of modules_install installing an invalid modules.order.
+%.ko: MODORDER := .modules.tmp
+%.ko: prepare FORCE
+ $(Q)$(MAKE) $(build)=$(build-dir) $(build-target:.ko=.mod)
+ $(Q)echo $(build-target) > $(MODORDER)
+ $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
# Modules
PHONY += /

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