[PATCH] kbuild: correctly skip tilded backups in localversion files

 Tildes as in path as in filenames are handled correctly now:
 only files, containing tilde '~', are backups, thus are not valid.

 [KJ]:
 Definition of `space' was removed, scripts/Kbuild.include has one.
 That definition was taken right from the GNU make manual, while Kbuild's
 version is original.

Cc: Roman Zippel <zippel@linux-m68k.org>
Cc: Bastian Blank <bastian@waldi.eu.org>
Cc: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Oleg Verych <olecom@flower.upol.cz>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 6 insertions, 11 deletions

diff --git a/Makefile b/Makefile
index 7e2750f4ca70..cdeda68cf2aa 100644
--- a/Makefile
+++ b/Makefile
@@ -776,7 +776,7 @@ $(vmlinux-dirs): prepare scripts
 #         $(EXTRAVERSION)               eg, -rc6
 #       $(localver-full)
 #         $(localver)
-#           localversion*               (all localversion* files)
+#           localversion*               (files without backups, containing '~')
 #           $(CONFIG_LOCALVERSION)      (from kernel config setting)
 #         $(localver-auto)              (only if CONFIG_LOCALVERSION_AUTO is set)
 #           ./scripts/setlocalversion   (SCM tag, if one exists)
@@ -787,17 +787,12 @@ $(vmlinux-dirs): prepare scripts
 # moment, only git is supported but other SCMs can edit the script
 # scripts/setlocalversion and add the appropriate checks as needed.
 
-nullstring :=
-space      := $(nullstring) # end of line
+pattern = ".*/localversion[^~]*"
+string  = $(shell cat /dev/null \
+           `find $(objtree) $(srctree) -maxdepth 1 -regex $(pattern) | sort`)
 
-___localver = $(objtree)/localversion* $(srctree)/localversion*
-__localver  = $(sort $(wildcard $(___localver)))
-# skip backup files (containing '~')
-_localver = $(foreach f, $(__localver), $(if $(findstring ~, $(f)),,$(f)))
-
-localver = $(subst $(space),, \
-           $(shell cat /dev/null $(_localver)) \
-           $(patsubst "%",%,$(CONFIG_LOCALVERSION)))
+localver = $(subst $(space),, $(string) \
+                              $(patsubst "%",%,$(CONFIG_LOCALVERSION)))
 
 # If CONFIG_LOCALVERSION_AUTO is set scripts/setlocalversion is called
 # and if the SCM is know a tag from the SCM is appended.