4.20-stable review patch. If anyone has any objections, please let me know.
------------------
From: Masahiro Yamada yamada.masahiro@socionext.com
commit e07db28eea38ed4e332b3a89f3995c86b713cb5b upstream.
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@socionext.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- Makefile | 11 +++-------- 1 file changed, 3 insertions(+), 8 deletions(-)
--- a/Makefile +++ b/Makefile @@ -1545,9 +1545,6 @@ else # KBUILD_EXTMOD
# We are always building modules KBUILD_MODULES := 1 -PHONY += crmodverdir -crmodverdir: - $(cmd_crmodverdir)
PHONY += $(objtree)/Module.symvers $(objtree)/Module.symvers: @@ -1559,7 +1556,7 @@ $(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) @@ -1600,7 +1597,8 @@ help:
# Dummies... PHONY += prepare scripts -prepare: ; +prepare: + $(cmd_crmodverdir) scripts: ; endif # KBUILD_EXTMOD
@@ -1724,17 +1722,14 @@ 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