aboutsummaryrefslogtreecommitdiff
path: root/scripts
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2017-11-17 17:45:29 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2017-11-17 17:45:29 -0800
commit09bd7c75e55cbaa6c731b0c3a5512ad89159f26f (patch)
treea73bd9f94d7661d6ff82f3374d4efea81925f7c8 /scripts
parentfa7f578076a8814caa5371e9f4949e408140766d (diff)
parent7f855fc805cd9c29867aed56cc20f818b36a7b7b (diff)
download96b-common-09bd7c75e55cbaa6c731b0c3a5512ad89159f26f.tar.gz
Merge tag 'kbuild-v4.15' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
Pull Kbuild updates from Masahiro Yamada: "One of the most remarkable improvements in this cycle is, Kbuild is now able to cache the result of shell commands. Some variables are expensive to compute, for example, $(call cc-option,...) invokes the compiler. It is not efficient to redo this computation every time, even when we are not actually building anything. Kbuild creates a hidden file ".cache.mk" that contains invoked shell commands and their results. The speed-up should be noticeable. Summary: - Fix arch build issues (hexagon, sh) - Clean up various Makefiles and scripts - Fix wrong usage of {CFLAGS,LDFLAGS}_MODULE in arch Makefiles - Cache variables that are expensive to compute - Improve cc-ldopton and ld-option for Clang - Optimize output directory creation" * tag 'kbuild-v4.15' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (30 commits) kbuild: move coccicheck help from scripts/Makefile.help to top Makefile sh: decompressor: add shipped files to .gitignore frv: .gitignore: ignore vmlinux.lds selinux: remove unnecessary assignment to subdir- kbuild: specify FORCE in Makefile.headersinst as .PHONY target kbuild: remove redundant mkdir from ./Kbuild kbuild: optimize object directory creation for incremental build kbuild: create object directories simpler and faster kbuild: filter-out PHONY targets from "targets" kbuild: remove redundant $(wildcard ...) for cmd_files calculation kbuild: create directory for make cache only when necessary sh: select KBUILD_DEFCONFIG depending on ARCH kbuild: fix linker feature test macros when cross compiling with Clang kbuild: shrink .cache.mk when it exceeds 1000 lines kbuild: do not call cc-option before KBUILD_CFLAGS initialization kbuild: Cache a few more calls to the compiler kbuild: Add a cache for generated variables kbuild: add forward declaration of default target to Makefile.asm-generic kbuild: remove KBUILD_SUBDIR_ASFLAGS and KBUILD_SUBDIR_CCFLAGS hexagon/kbuild: replace CFLAGS_MODULE with KBUILD_CFLAGS_MODULE ...
Diffstat (limited to 'scripts')
-rw-r--r--scripts/Kbuild.include106
-rw-r--r--scripts/Makefile.asm-generic3
-rw-r--r--scripts/Makefile.build25
-rw-r--r--scripts/Makefile.headersinst10
-rw-r--r--scripts/Makefile.help3
-rw-r--r--scripts/Makefile.host12
-rw-r--r--scripts/Makefile.lib34
-rw-r--r--scripts/Makefile.modpost3
-rwxr-xr-xscripts/link-vmlinux.sh15
-rwxr-xr-xscripts/mkcompile_h7
-rw-r--r--scripts/selinux/Makefile1
11 files changed, 129 insertions, 90 deletions
diff --git a/scripts/Kbuild.include b/scripts/Kbuild.include
index 9ffd3dda3889..065324a8046f 100644
--- a/scripts/Kbuild.include
+++ b/scripts/Kbuild.include
@@ -8,6 +8,8 @@ squote := '
empty :=
space := $(empty) $(empty)
space_escape := _-_SPACE_-_
+right_paren := )
+left_paren := (
###
# Name of target with a '.' as filename prefix. foo/bar.o => foo/.bar.o
@@ -80,6 +82,71 @@ cc-cross-prefix = \
echo $(c); \
fi)))
+# Tools for caching Makefile variables that are "expensive" to compute.
+#
+# Here we want to help deal with variables that take a long time to compute
+# by making it easy to store these variables in a cache.
+#
+# The canonical example here is testing for compiler flags. On a simple system
+# each call to the compiler takes 10 ms, but on a system with a compiler that's
+# called through various wrappers it can take upwards of 100 ms. If we have
+# 100 calls to the compiler this can take 1 second (on a simple system) or 10
+# seconds (on a complicated system).
+#
+# The "cache" will be in Makefile syntax and can be directly included.
+# Any time we try to reference a variable that's not in the cache we'll
+# calculate it and store it in the cache for next time.
+
+# Include values from last time
+make-cache := $(if $(KBUILD_EXTMOD),$(KBUILD_EXTMOD)/,$(if $(obj),$(obj)/)).cache.mk
+$(make-cache): ;
+-include $(make-cache)
+
+cached-data := $(filter __cached_%, $(.VARIABLES))
+
+# If cache exceeds 1000 lines, shrink it down to 500.
+ifneq ($(word 1000,$(cached-data)),)
+$(shell tail -n 500 $(make-cache) > $(make-cache).tmp; \
+ mv $(make-cache).tmp $(make-cache))
+endif
+
+create-cache-dir := $(if $(KBUILD_SRC),$(if $(cache-data),,1))
+
+# Usage: $(call __sanitize-opt,Hello=Hola$(comma)Goodbye Adios)
+#
+# Convert all '$', ')', '(', '\', '=', ' ', ',', ':' to '_'
+__sanitize-opt = $(subst $$,_,$(subst $(right_paren),_,$(subst $(left_paren),_,$(subst \,_,$(subst =,_,$(subst $(space),_,$(subst $(comma),_,$(subst :,_,$(1)))))))))
+
+# Usage: $(call shell-cached,shell_command)
+# Example: $(call shell-cached,md5sum /usr/bin/gcc)
+#
+# If we've already seen a call to this exact shell command (even in a
+# previous invocation of make!) we'll return the value. If not, we'll
+# compute it and store the result for future runs.
+#
+# This is a bit of voodoo, but basic explanation is that if the variable
+# was undefined then we'll evaluate the shell command and store the result
+# into the variable. We'll then store that value in the cache and finally
+# output the value.
+#
+# NOTE: The $$(2) here isn't actually a parameter to __run-and-store. We
+# happen to know that the caller will have their shell command in $(2) so the
+# result of "call"ing this will produce a reference to that $(2). The reason
+# for this strangeness is to avoid an extra level of eval (and escaping) of
+# $(2).
+define __run-and-store
+ifeq ($(origin $(1)),undefined)
+ $$(eval $(1) := $$(shell $$(2)))
+ifeq ($(create-cache-dir),1)
+ $$(shell mkdir -p $(dir $(make-cache)))
+ $$(eval create-cache-dir :=)
+endif
+ $$(shell echo '$(1) := $$($(1))' >> $(make-cache))
+endif
+endef
+__shell-cached = $(eval $(call __run-and-store,$(1)))$($(1))
+shell-cached = $(call __shell-cached,__cached_$(call __sanitize-opt,$(1)),$(1))
+
# output directory for tests below
TMPOUT := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/)
@@ -87,30 +154,36 @@ TMPOUT := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/)
# Usage: option = $(call try-run, $(CC)...-o "$$TMP",option-ok,otherwise)
# Exit code chooses option. "$$TMP" serves as a temporary file and is
# automatically cleaned up.
-try-run = $(shell set -e; \
+__try-run = set -e; \
TMP="$(TMPOUT).$$$$.tmp"; \
TMPO="$(TMPOUT).$$$$.o"; \
if ($(1)) >/dev/null 2>&1; \
then echo "$(2)"; \
else echo "$(3)"; \
fi; \
- rm -f "$$TMP" "$$TMPO")
+ rm -f "$$TMP" "$$TMPO"
+
+try-run = $(shell $(__try-run))
+
+# try-run-cached
+# This works like try-run, but the result is cached.
+try-run-cached = $(call shell-cached,$(__try-run))
# as-option
# Usage: cflags-y += $(call as-option,-Wa$(comma)-isa=foo,)
-as-option = $(call try-run,\
+as-option = $(call try-run-cached,\
$(CC) $(KBUILD_CFLAGS) $(1) -c -x assembler /dev/null -o "$$TMP",$(1),$(2))
# as-instr
# Usage: cflags-y += $(call as-instr,instr,option1,option2)
-as-instr = $(call try-run,\
+as-instr = $(call try-run-cached,\
printf "%b\n" "$(1)" | $(CC) $(KBUILD_AFLAGS) -c -x assembler -o "$$TMP" -,$(2),$(3))
# __cc-option
# Usage: MY_CFLAGS += $(call __cc-option,$(CC),$(MY_CFLAGS),-march=winchip-c6,-march=i586)
-__cc-option = $(call try-run,\
+__cc-option = $(call try-run-cached,\
$(1) -Werror $(2) $(3) -c -x c /dev/null -o "$$TMP",$(3),$(4))
# Do not attempt to build with gcc plugins during cc-option tests.
@@ -130,23 +203,23 @@ hostcc-option = $(call __cc-option, $(HOSTCC),\
# cc-option-yn
# Usage: flag := $(call cc-option-yn,-march=winchip-c6)
-cc-option-yn = $(call try-run,\
+cc-option-yn = $(call try-run-cached,\
$(CC) -Werror $(KBUILD_CPPFLAGS) $(CC_OPTION_CFLAGS) $(1) -c -x c /dev/null -o "$$TMP",y,n)
# cc-disable-warning
# Usage: cflags-y += $(call cc-disable-warning,unused-but-set-variable)
-cc-disable-warning = $(call try-run,\
+cc-disable-warning = $(call try-run-cached,\
$(CC) -Werror $(KBUILD_CPPFLAGS) $(CC_OPTION_CFLAGS) -W$(strip $(1)) -c -x c /dev/null -o "$$TMP",-Wno-$(strip $(1)))
# cc-name
# Expands to either gcc or clang
-cc-name = $(shell $(CC) -v 2>&1 | grep -q "clang version" && echo clang || echo gcc)
+cc-name = $(call shell-cached,$(CC) -v 2>&1 | grep -q "clang version" && echo clang || echo gcc)
# cc-version
-cc-version = $(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-version.sh $(CC))
+cc-version = $(call shell-cached,$(CONFIG_SHELL) $(srctree)/scripts/gcc-version.sh $(CC))
# cc-fullversion
-cc-fullversion = $(shell $(CONFIG_SHELL) \
+cc-fullversion = $(call shell-cached,$(CONFIG_SHELL) \
$(srctree)/scripts/gcc-version.sh -p $(CC))
# cc-ifversion
@@ -159,22 +232,23 @@ cc-if-fullversion = $(shell [ $(cc-fullversion) $(1) $(2) ] && echo $(3) || echo
# cc-ldoption
# Usage: ldflags += $(call cc-ldoption, -Wl$(comma)--hash-style=both)
-cc-ldoption = $(call try-run,\
- $(CC) $(1) -nostdlib -x c /dev/null -o "$$TMP",$(1),$(2))
+cc-ldoption = $(call try-run-cached,\
+ $(CC) $(1) $(KBUILD_CPPFLAGS) $(CC_OPTION_CFLAGS) -nostdlib -x c /dev/null -o "$$TMP",$(1),$(2))
# ld-option
# Usage: LDFLAGS += $(call ld-option, -X)
-ld-option = $(call try-run,\
- $(CC) -x c /dev/null -c -o "$$TMPO" ; $(LD) $(1) "$$TMPO" -o "$$TMP",$(1),$(2))
+ld-option = $(call try-run-cached,\
+ $(CC) $(KBUILD_CPPFLAGS) $(CC_OPTION_CFLAGS) -x c /dev/null -c -o "$$TMPO"; \
+ $(LD) $(LDFLAGS) $(1) "$$TMPO" -o "$$TMP",$(1),$(2))
# ar-option
# Usage: KBUILD_ARFLAGS := $(call ar-option,D)
# Important: no spaces around options
-ar-option = $(call try-run, $(AR) rc$(1) "$$TMP",$(1),$(2))
+ar-option = $(call try-run-cached, $(AR) rc$(1) "$$TMP",$(1),$(2))
# ld-version
# Note this is mainly for HJ Lu's 3 number binutil versions
-ld-version = $(shell $(LD) --version | $(srctree)/scripts/ld-version.sh)
+ld-version = $(call shell-cached,$(LD) --version | $(srctree)/scripts/ld-version.sh)
# ld-ifversion
# Usage: $(call ld-ifversion, -ge, 22252, y)
diff --git a/scripts/Makefile.asm-generic b/scripts/Makefile.asm-generic
index 524eeedc8d25..32ad8e93fbe1 100644
--- a/scripts/Makefile.asm-generic
+++ b/scripts/Makefile.asm-generic
@@ -6,6 +6,9 @@
# and for each file listed in this file with generic-y creates
# a small wrapper file in $(obj) (arch/$(SRCARCH)/include/generated/$(src))
+PHONY := all
+all:
+
kbuild-file := $(srctree)/arch/$(SRCARCH)/include/$(src)/Kbuild
-include $(kbuild-file)
diff --git a/scripts/Makefile.build b/scripts/Makefile.build
index e63af4e19382..f171225383cc 100644
--- a/scripts/Makefile.build
+++ b/scripts/Makefile.build
@@ -65,15 +65,6 @@ ifneq ($(hostprogs-y)$(hostprogs-m)$(hostlibs-y)$(hostlibs-m)$(hostcxxlibs-y)$(h
include scripts/Makefile.host
endif
-ifneq ($(KBUILD_SRC),)
-# Create output directory if not already present
-_dummy := $(shell [ -d $(obj) ] || mkdir -p $(obj))
-
-# Create directories for object files if directory does not exist
-# Needed when obj-y := dir/file.o syntax is used
-_dummy := $(foreach d,$(obj-dirs), $(shell [ -d $(d) ] || mkdir -p $(d)))
-endif
-
ifndef obj
$(warning kbuild: Makefile.build is included improperly)
endif
@@ -563,7 +554,7 @@ $(multi-used-m): FORCE
$(call multi_depend, $(multi-used-m), .o, -objs -y -m)
targets += $(multi-used-y) $(multi-used-m)
-
+targets := $(filter-out $(PHONY), $(targets))
# Descending
# ---------------------------------------------------------------------------
@@ -584,13 +575,23 @@ FORCE:
# optimization, we don't need to read them if the target does not
# exist, we will rebuild anyway in that case.
-targets := $(wildcard $(sort $(targets)))
-cmd_files := $(wildcard $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd))
+cmd_files := $(wildcard $(foreach f,$(sort $(targets)),$(dir $(f)).$(notdir $(f)).cmd))
ifneq ($(cmd_files),)
include $(cmd_files)
endif
+ifneq ($(KBUILD_SRC),)
+# Create directories for object files if they do not exist
+obj-dirs := $(sort $(obj) $(patsubst %/,%, $(dir $(targets))))
+# If cmd_files exist, their directories apparently exist. Skip mkdir.
+exist-dirs := $(sort $(patsubst %/,%, $(dir $(cmd_files))))
+obj-dirs := $(strip $(filter-out $(exist-dirs), $(obj-dirs)))
+ifneq ($(obj-dirs),)
+$(shell mkdir -p $(obj-dirs))
+endif
+endif
+
# Declare the contents of the .PHONY variable as phony. We keep that
# information in a variable se we can use it in if_changed and friends.
diff --git a/scripts/Makefile.headersinst b/scripts/Makefile.headersinst
index 99967948d764..d5e131471131 100644
--- a/scripts/Makefile.headersinst
+++ b/scripts/Makefile.headersinst
@@ -27,11 +27,11 @@ subdirs := $(patsubst $(srcdir)/%/,%,\
# Recursion
__headers: $(subdirs)
-.PHONY: $(subdirs)
+PHONY += $(subdirs)
$(subdirs):
$(Q)$(MAKE) $(hdr-inst)=$(obj)/$@ dst=$(dst)/$@
-# Skip header install/check for include/uapi and arch/$(hdr-arch)/include/uapi.
+# Skip header install/check for include/uapi and arch/$(SRCARCH)/include/uapi.
# We have only sub-directories there.
skip-inst := $(if $(filter %/uapi,$(obj)),1)
@@ -115,9 +115,8 @@ $(check-file): scripts/headers_check.pl $(output-files) FORCE
endif
-targets := $(wildcard $(sort $(targets)))
cmd_files := $(wildcard \
- $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd))
+ $(foreach f,$(sort $(targets)),$(dir $(f)).$(notdir $(f)).cmd))
ifneq ($(cmd_files),)
include $(cmd_files)
@@ -125,6 +124,7 @@ endif
endif # skip-inst
-.PHONY: $(PHONY)
PHONY += FORCE
FORCE: ;
+
+.PHONY: $(PHONY)
diff --git a/scripts/Makefile.help b/scripts/Makefile.help
deleted file mode 100644
index d03608f5db04..000000000000
--- a/scripts/Makefile.help
+++ /dev/null
@@ -1,3 +0,0 @@
-
-checker-help:
- @echo ' coccicheck - Check with Coccinelle.'
diff --git a/scripts/Makefile.host b/scripts/Makefile.host
index 10e5c3cb89dc..e6dc6ae2d7c4 100644
--- a/scripts/Makefile.host
+++ b/scripts/Makefile.host
@@ -49,15 +49,6 @@ host-cxxobjs := $(sort $(foreach m,$(host-cxxmulti),$($(m)-cxxobjs)))
host-cshobjs := $(sort $(foreach m,$(host-cshlib),$($(m:.so=-objs))))
host-cxxshobjs := $(sort $(foreach m,$(host-cxxshlib),$($(m:.so=-objs))))
-# output directory for programs/.o files
-# hostprogs-y := tools/build may have been specified.
-# Retrieve also directory of .o files from prog-objs or prog-cxxobjs notation
-host-objdirs := $(dir $(__hostprogs) $(host-cobjs) $(host-cxxobjs))
-
-host-objdirs := $(strip $(sort $(filter-out ./,$(host-objdirs))))
-
-
-__hostprogs := $(addprefix $(obj)/,$(__hostprogs))
host-csingle := $(addprefix $(obj)/,$(host-csingle))
host-cmulti := $(addprefix $(obj)/,$(host-cmulti))
host-cobjs := $(addprefix $(obj)/,$(host-cobjs))
@@ -67,9 +58,6 @@ host-cshlib := $(addprefix $(obj)/,$(host-cshlib))
host-cxxshlib := $(addprefix $(obj)/,$(host-cxxshlib))
host-cshobjs := $(addprefix $(obj)/,$(host-cshobjs))
host-cxxshobjs := $(addprefix $(obj)/,$(host-cxxshobjs))
-host-objdirs := $(addprefix $(obj)/,$(host-objdirs))
-
-obj-dirs += $(host-objdirs)
#####
# Handle options to gcc. Support building with separate output directory
diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib
index 2278405cbc80..08eb40a7729f 100644
--- a/scripts/Makefile.lib
+++ b/scripts/Makefile.lib
@@ -5,24 +5,25 @@ ccflags-y += $(EXTRA_CFLAGS)
cppflags-y += $(EXTRA_CPPFLAGS)
ldflags-y += $(EXTRA_LDFLAGS)
-#
-# flags that take effect in sub directories
-export KBUILD_SUBDIR_ASFLAGS := $(KBUILD_SUBDIR_ASFLAGS) $(subdir-asflags-y)
-export KBUILD_SUBDIR_CCFLAGS := $(KBUILD_SUBDIR_CCFLAGS) $(subdir-ccflags-y)
+# flags that take effect in current and sub directories
+KBUILD_AFLAGS += $(subdir-asflags-y)
+KBUILD_CFLAGS += $(subdir-ccflags-y)
# Figure out what we need to build from the various variables
# ===========================================================================
# When an object is listed to be built compiled-in and modular,
# only build the compiled-in version
-
obj-m := $(filter-out $(obj-y),$(obj-m))
# Libraries are always collected in one lib file.
# Filter out objects already built-in
-
lib-y := $(filter-out $(obj-y), $(sort $(lib-y) $(lib-m)))
+# Determine modorder.
+# Unfortunately, we don't have information about ordering between -y
+# and -m subdirs. Just put -y's first.
+modorder := $(patsubst %/,%/modules.order, $(filter %/, $(obj-y)) $(obj-m:.o=.ko))
# Handle objects in subdirs
# ---------------------------------------------------------------------------
@@ -30,12 +31,6 @@ lib-y := $(filter-out $(obj-y), $(sort $(lib-y) $(lib-m)))
# and add the directory to the list of dirs to descend into: $(subdir-y)
# o if we encounter foo/ in $(obj-m), remove it from $(obj-m)
# and add the directory to the list of dirs to descend into: $(subdir-m)
-
-# Determine modorder.
-# Unfortunately, we don't have information about ordering between -y
-# and -m subdirs. Just put -y's first.
-modorder := $(patsubst %/,%/modules.order, $(filter %/, $(obj-y)) $(obj-m:.o=.ko))
-
__subdir-y := $(patsubst %/,%,$(filter %/, $(obj-y)))
subdir-y += $(__subdir-y)
__subdir-m := $(patsubst %/,%,$(filter %/, $(obj-m)))
@@ -44,10 +39,9 @@ obj-y := $(patsubst %/, %/built-in.o, $(obj-y))
obj-m := $(filter-out %/, $(obj-m))
# Subdirectories we need to descend into
-
subdir-ym := $(sort $(subdir-y) $(subdir-m))
-# if $(foo-objs) exists, foo.o is a composite object
+# if $(foo-objs), $(foo-y), or $(foo-m) exists, foo.o is a composite object
multi-used-y := $(sort $(foreach m,$(obj-y), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y))), $(m))))
multi-used-m := $(sort $(foreach m,$(obj-m), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y)) $($(m:.o=-m))), $(m))))
multi-used := $(multi-used-y) $(multi-used-m)
@@ -57,15 +51,11 @@ single-used-m := $(sort $(filter-out $(multi-used-m),$(obj-m)))
# objects depend on those (obviously)
multi-objs-y := $(foreach m, $(multi-used-y), $($(m:.o=-objs)) $($(m:.o=-y)))
multi-objs-m := $(foreach m, $(multi-used-m), $($(m:.o=-objs)) $($(m:.o=-y)))
-multi-objs := $(multi-objs-y) $(multi-objs-m)
# $(subdir-obj-y) is the list of objects in $(obj-y) which uses dir/ to
# tell kbuild to descend
subdir-obj-y := $(filter %/built-in.o, $(obj-y))
-# $(obj-dirs) is a list of directories that contain object files
-obj-dirs := $(dir $(multi-objs) $(obj-y))
-
# Replace multi-part objects by their individual parts, look at local dir only
real-objs-y := $(foreach m, $(filter-out $(subdir-obj-y), $(obj-y)), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y))),$($(m:.o=-objs)) $($(m:.o=-y)),$(m))) $(extra-y)
real-objs-m := $(foreach m, $(obj-m), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y)) $($(m:.o=-m))),$($(m:.o=-objs)) $($(m:.o=-y)) $($(m:.o=-m)),$(m)))
@@ -93,11 +83,9 @@ multi-used-m := $(addprefix $(obj)/,$(multi-used-m))
multi-objs-y := $(addprefix $(obj)/,$(multi-objs-y))
multi-objs-m := $(addprefix $(obj)/,$(multi-objs-m))
subdir-ym := $(addprefix $(obj)/,$(subdir-ym))
-obj-dirs := $(addprefix $(obj)/,$(obj-dirs))
# These flags are needed for modversions and compiling, so we define them here
-# already
-# $(modname_flags) #defines KBUILD_MODNAME as the name of the module it will
+# $(modname_flags) defines KBUILD_MODNAME as the name of the module it will
# end up in (or would, if it gets compiled in)
# Note: Files that end up in two or more modules are compiled without the
# KBUILD_MODNAME definition. The reason is that any made-up name would
@@ -107,10 +95,10 @@ basename_flags = -DKBUILD_BASENAME=$(call name-fix,$(basetarget))
modname_flags = $(if $(filter 1,$(words $(modname))),\
-DKBUILD_MODNAME=$(call name-fix,$(modname)))
-orig_c_flags = $(KBUILD_CPPFLAGS) $(KBUILD_CFLAGS) $(KBUILD_SUBDIR_CCFLAGS) \
+orig_c_flags = $(KBUILD_CPPFLAGS) $(KBUILD_CFLAGS) \
$(ccflags-y) $(CFLAGS_$(basetarget).o)
_c_flags = $(filter-out $(CFLAGS_REMOVE_$(basetarget).o), $(orig_c_flags))
-orig_a_flags = $(KBUILD_CPPFLAGS) $(KBUILD_AFLAGS) $(KBUILD_SUBDIR_ASFLAGS) \
+orig_a_flags = $(KBUILD_CPPFLAGS) $(KBUILD_AFLAGS) \
$(asflags-y) $(AFLAGS_$(basetarget).o)
_a_flags = $(filter-out $(AFLAGS_REMOVE_$(basetarget).o), $(orig_a_flags))
_cpp_flags = $(KBUILD_CPPFLAGS) $(cppflags-y) $(CPPFLAGS_$(@F))
diff --git a/scripts/Makefile.modpost b/scripts/Makefile.modpost
index 991db7d6e4df..df4174405feb 100644
--- a/scripts/Makefile.modpost
+++ b/scripts/Makefile.modpost
@@ -143,8 +143,7 @@ FORCE:
# optimization, we don't need to read them if the target does not
# exist, we will rebuild anyway in that case.
-targets := $(wildcard $(sort $(targets)))
-cmd_files := $(wildcard $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd))
+cmd_files := $(wildcard $(foreach f,$(sort $(targets)),$(dir $(f)).$(notdir $(f)).cmd))
ifneq ($(cmd_files),)
include $(cmd_files)
diff --git a/scripts/link-vmlinux.sh b/scripts/link-vmlinux.sh
index e6818b8e7141..c0d129d7f430 100755
--- a/scripts/link-vmlinux.sh
+++ b/scripts/link-vmlinux.sh
@@ -188,10 +188,8 @@ sortextable()
# Delete output files in case of error
cleanup()
{
- rm -f .old_version
rm -f .tmp_System.map
rm -f .tmp_kallsyms*
- rm -f .tmp_version
rm -f .tmp_vmlinux*
rm -f built-in.o
rm -f System.map
@@ -239,12 +237,12 @@ esac
# Update version
info GEN .version
-if [ ! -r .version ]; then
- rm -f .version;
- echo 1 >.version;
+if [ -r .version ]; then
+ VERSION=$(expr 0$(cat .version) + 1)
+ echo $VERSION > .version
else
- mv .version .old_version;
- expr 0$(cat .old_version) + 1 >.version;
+ rm -f .version
+ echo 1 > .version
fi;
# final build of init/
@@ -332,6 +330,3 @@ if [ -n "${CONFIG_KALLSYMS}" ]; then
exit 1
fi
fi
-
-# We made a new kernel - delete old version file
-rm -f .old_version
diff --git a/scripts/mkcompile_h b/scripts/mkcompile_h
index 959199c3147e..87f1fc9801d7 100755
--- a/scripts/mkcompile_h
+++ b/scripts/mkcompile_h
@@ -28,12 +28,7 @@ LC_ALL=C
export LC_ALL
if [ -z "$KBUILD_BUILD_VERSION" ]; then
- if [ -r .version ]; then
- VERSION=`cat .version`
- else
- VERSION=0
- echo 0 > .version
- fi
+ VERSION=$(cat .version 2>/dev/null || echo 1)
else
VERSION=$KBUILD_BUILD_VERSION
fi
diff --git a/scripts/selinux/Makefile b/scripts/selinux/Makefile
index e8049da1831f..b3048b894a39 100644
--- a/scripts/selinux/Makefile
+++ b/scripts/selinux/Makefile
@@ -1,2 +1 @@
subdir-y := mdp genheaders
-subdir- += mdp genheaders