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Message-Id: <20191219183218.120498975@linuxfoundation.org>
Date: Thu, 19 Dec 2019 19:32:19 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-kernel@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
stable@...r.kernel.org,
Masahiro Yamada <yamada.masahiro@...ionext.com>,
Sasha Levin <sashal@...nel.org>
Subject: [PATCH 4.9 057/199] kbuild: fix single target build for external module
From: Masahiro Yamada <yamada.masahiro@...ionext.com>
[ Upstream commit e07db28eea38ed4e332b3a89f3995c86b713cb5b ]
Building a single target in an external module fails due to missing
.tmp_versions directory.
For example,
$ make -C /lib/modules/$(uname -r)/build M=$PWD foo.o
will fail in the following way:
CC [M] /home/masahiro/foo/foo.o
/bin/sh: 1: cannot create /home/masahiro/foo/.tmp_versions/foo.mod: Directory nonexistent
This is because $(cmd_crmodverdir) is executed only before building
/, %/, %.ko single targets of external modules. Create .tmp_versions
in the 'prepare' target.
Signed-off-by: Masahiro Yamada <yamada.masahiro@...ionext.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
Makefile | 11 +++--------
1 file changed, 3 insertions(+), 8 deletions(-)
diff --git a/Makefile b/Makefile
index 55a91bc3d8f9c..6baf1e6324255 100644
--- a/Makefile
+++ b/Makefile
@@ -1521,9 +1521,6 @@ else # KBUILD_EXTMOD
# We are always building modules
KBUILD_MODULES := 1
-PHONY += crmodverdir
-crmodverdir:
- $(cmd_crmodverdir)
PHONY += $(objtree)/Module.symvers
$(objtree)/Module.symvers:
@@ -1535,7 +1532,7 @@ $(objtree)/Module.symvers:
module-dirs := $(addprefix _module_,$(KBUILD_EXTMOD))
PHONY += $(module-dirs) modules
-$(module-dirs): crmodverdir $(objtree)/Module.symvers
+$(module-dirs): prepare $(objtree)/Module.symvers
$(Q)$(MAKE) $(build)=$(patsubst _module_%,%,$@)
modules: $(module-dirs)
@@ -1576,7 +1573,8 @@ help:
# Dummies...
PHONY += prepare scripts
-prepare: ;
+prepare:
+ $(cmd_crmodverdir)
scripts: ;
endif # KBUILD_EXTMOD
@@ -1701,17 +1699,14 @@ endif
# Modules
/: prepare scripts FORCE
- $(cmd_crmodverdir)
$(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
$(build)=$(build-dir)
# Make sure the latest headers are built for Documentation
Documentation/ samples/: headers_install
%/: prepare scripts FORCE
- $(cmd_crmodverdir)
$(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
$(build)=$(build-dir)
%.ko: prepare scripts FORCE
- $(cmd_crmodverdir)
$(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
$(build)=$(build-dir) $(@:.ko=.o)
$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
--
2.20.1
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