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authorPaul Smith <psmith@gnu.org>2006-03-05 17:14:10 -0500
committerSam Ravnborg <sam@mars.ravnborg.org>2006-03-06 00:09:51 +0100
commit4f1933620f57145212cdbb1ac6ce099eeeb21c5a (patch)
treec083cce1f0acedd92be2ac6eb5e6c49ebd84ac46
parent7b75b13cda8bd21e8636ea985f76e1ce5bd1a470 (diff)
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kbuild: change kbuild to not rely on incorrect GNU make behavior
The kbuild system takes advantage of an incorrect behavior in GNU make. Once this behavior is fixed, all files in the kernel rebuild every time, even if nothing has changed. This patch ensures kbuild works with both the incorrect and correct behaviors of GNU make. For more details on the incorrect behavior, see: http://lists.gnu.org/archive/html/bug-make/2006-03/msg00003.html Changes in this patch: - Keep all targets that are to be marked .PHONY in a variable, PHONY. - Add .PHONY: $(PHONY) to mark them properly. - Remove any $(PHONY) files from the $? list when determining whether targets are up-to-date or not. Signed-off-by: Paul Smith <psmith@gnu.org> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
-rw-r--r--Documentation/DocBook/Makefile8
-rw-r--r--Makefile64
-rw-r--r--arch/arm/Makefile5
-rw-r--r--arch/arm/boot/Makefile5
-rw-r--r--arch/arm/boot/bootp/Makefile5
-rw-r--r--arch/arm26/Makefile7
-rw-r--r--arch/arm26/boot/Makefile5
-rw-r--r--arch/i386/Makefile4
-rw-r--r--arch/ia64/Makefile5
-rw-r--r--arch/m32r/Makefile5
-rw-r--r--arch/powerpc/Makefile2
-rw-r--r--arch/ppc/Makefile2
-rw-r--r--arch/ppc/boot/Makefile5
-rw-r--r--arch/ppc/boot/openfirmware/Makefile7
-rw-r--r--arch/sh/Makefile2
-rw-r--r--arch/um/Makefile7
-rw-r--r--arch/x86_64/Makefile4
-rw-r--r--scripts/Kbuild.include13
-rw-r--r--scripts/Makefile.build12
-rw-r--r--scripts/Makefile.clean10
-rw-r--r--scripts/Makefile.modinst10
-rw-r--r--scripts/Makefile.modpost12
-rw-r--r--scripts/kconfig/Makefile4
-rw-r--r--scripts/kconfig/lxdialog/Makefile6
-rw-r--r--scripts/package/Makefile10
25 files changed, 144 insertions, 75 deletions
diff --git a/Documentation/DocBook/Makefile b/Documentation/DocBook/Makefile
index 1c955883cf5..2c6f66dea65 100644
--- a/Documentation/DocBook/Makefile
+++ b/Documentation/DocBook/Makefile
@@ -28,7 +28,7 @@ PS_METHOD = $(prefer-db2x)
###
# The targets that may be used.
-.PHONY: xmldocs sgmldocs psdocs pdfdocs htmldocs mandocs installmandocs
+PHONY += xmldocs sgmldocs psdocs pdfdocs htmldocs mandocs installmandocs
BOOKS := $(addprefix $(obj)/,$(DOCBOOKS))
xmldocs: $(BOOKS)
@@ -211,3 +211,9 @@ clean-dirs := $(patsubst %.xml,%,$(DOCBOOKS))
#man put files in man subdir - traverse down
subdir- := man/
+
+
+# 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.
+
+.PHONY: $(PHONY)
diff --git a/Makefile b/Makefile
index 12c8d714777..a59c1e2d0c2 100644
--- a/Makefile
+++ b/Makefile
@@ -95,7 +95,7 @@ ifdef O
endif
# That's our default target when none is given on the command line
-.PHONY: _all
+PHONY := _all
_all:
ifneq ($(KBUILD_OUTPUT),)
@@ -106,7 +106,7 @@ KBUILD_OUTPUT := $(shell cd $(KBUILD_OUTPUT) && /bin/pwd)
$(if $(KBUILD_OUTPUT),, \
$(error output directory "$(saved-output)" does not exist))
-.PHONY: $(MAKECMDGOALS)
+PHONY += $(MAKECMDGOALS)
$(filter-out _all,$(MAKECMDGOALS)) _all:
$(if $(KBUILD_VERBOSE:1=),@)$(MAKE) -C $(KBUILD_OUTPUT) \
@@ -123,7 +123,7 @@ ifeq ($(skip-makefile),)
# If building an external module we do not care about the all: rule
# but instead _all depend on modules
-.PHONY: all
+PHONY += all
ifeq ($(KBUILD_EXTMOD),)
_all: all
else
@@ -337,14 +337,14 @@ export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn --exc
# Rules shared between *config targets and build targets
# Basic helpers built in scripts/
-.PHONY: scripts_basic
+PHONY += scripts_basic
scripts_basic:
$(Q)$(MAKE) $(build)=scripts/basic
# To avoid any implicit rule to kick in, define an empty command.
scripts/basic/%: scripts_basic ;
-.PHONY: outputmakefile
+PHONY += outputmakefile
# outputmakefile generate a Makefile to be placed in output directory, if
# using a seperate output directory. This allows convinient use
# of make in output directory
@@ -420,7 +420,7 @@ ifeq ($(KBUILD_EXTMOD),)
# Additional helpers built in scripts/
# Carefully list dependencies so we do not try to build scripts twice
# in parrallel
-.PHONY: scripts
+PHONY += scripts
scripts: scripts_basic include/config/MARKER
$(Q)$(MAKE) $(build)=$(@)
@@ -720,7 +720,7 @@ $(sort $(vmlinux-init) $(vmlinux-main)) $(vmlinux-lds): $(vmlinux-dirs) ;
# make menuconfig etc.
# Error messages still appears in the original language
-.PHONY: $(vmlinux-dirs)
+PHONY += $(vmlinux-dirs)
$(vmlinux-dirs): prepare scripts
$(Q)$(MAKE) $(build)=$@
@@ -773,10 +773,10 @@ kernelrelease = $(KERNELVERSION)$(localver-full)
# version.h and scripts_basic is processed / created.
# Listed in dependency order
-.PHONY: prepare archprepare prepare0 prepare1 prepare2 prepare3
+PHONY += prepare archprepare prepare0 prepare1 prepare2 prepare3
# prepare-all is deprecated, use prepare as valid replacement
-.PHONY: prepare-all
+PHONY += prepare-all
# prepare3 is used to check if we are building in a separate output directory,
# and if so do:
@@ -857,7 +857,7 @@ include/linux/version.h: $(srctree)/Makefile .config .kernelrelease FORCE
# ---------------------------------------------------------------------------
-.PHONY: depend dep
+PHONY += depend dep
depend dep:
@echo '*** Warning: make $@ is unnecessary now.'
@@ -872,21 +872,21 @@ all: modules
# Build modules
-.PHONY: modules
+PHONY += modules
modules: $(vmlinux-dirs) $(if $(KBUILD_BUILTIN),vmlinux)
@echo ' Building modules, stage 2.';
$(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modpost
# Target to prepare building external modules
-.PHONY: modules_prepare
+PHONY += modules_prepare
modules_prepare: prepare scripts
# Target to install modules
-.PHONY: modules_install
+PHONY += modules_install
modules_install: _modinst_ _modinst_post
-.PHONY: _modinst_
+PHONY += _modinst_
_modinst_:
@if [ -z "`$(DEPMOD) -V 2>/dev/null | grep module-init-tools`" ]; then \
echo "Warning: you may need to install module-init-tools"; \
@@ -913,7 +913,7 @@ depmod_opts :=
else
depmod_opts := -b $(INSTALL_MOD_PATH) -r
endif
-.PHONY: _modinst_post
+PHONY += _modinst_post
_modinst_post: _modinst_
if [ -r System.map -a -x $(DEPMOD) ]; then $(DEPMOD) -ae -F System.map $(depmod_opts) $(KERNELRELEASE); fi
@@ -956,7 +956,7 @@ clean: rm-dirs := $(CLEAN_DIRS)
clean: rm-files := $(CLEAN_FILES)
clean-dirs := $(addprefix _clean_,$(srctree) $(vmlinux-alldirs))
-.PHONY: $(clean-dirs) clean archclean
+PHONY += $(clean-dirs) clean archclean
$(clean-dirs):
$(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@)
@@ -974,7 +974,7 @@ mrproper: rm-dirs := $(wildcard $(MRPROPER_DIRS))
mrproper: rm-files := $(wildcard $(MRPROPER_FILES))
mrproper-dirs := $(addprefix _mrproper_,Documentation/DocBook scripts)
-.PHONY: $(mrproper-dirs) mrproper archmrproper
+PHONY += $(mrproper-dirs) mrproper archmrproper
$(mrproper-dirs):
$(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@)
@@ -984,7 +984,7 @@ mrproper: clean archmrproper $(mrproper-dirs)
# distclean
#
-.PHONY: distclean
+PHONY += distclean
distclean: mrproper
@find $(srctree) $(RCS_FIND_IGNORE) \
@@ -1000,7 +1000,7 @@ distclean: mrproper
# rpm target kept for backward compatibility
package-dir := $(srctree)/scripts/package
-.PHONY: %-pkg rpm
+PHONY += %-pkg rpm
%pkg: FORCE
$(Q)$(MAKE) -f $(package-dir)/Makefile $@
@@ -1092,12 +1092,12 @@ else # KBUILD_EXTMOD
# We are always building modules
KBUILD_MODULES := 1
-.PHONY: crmodverdir
+PHONY += crmodverdir
crmodverdir:
$(Q)rm -rf $(MODVERDIR)
$(Q)mkdir -p $(MODVERDIR)
-.PHONY: $(objtree)/Module.symvers
+PHONY += $(objtree)/Module.symvers
$(objtree)/Module.symvers:
@test -e $(objtree)/Module.symvers || ( \
echo; \
@@ -1106,7 +1106,7 @@ $(objtree)/Module.symvers:
echo )
module-dirs := $(addprefix _module_,$(KBUILD_EXTMOD))
-.PHONY: $(module-dirs) modules
+PHONY += $(module-dirs) modules
$(module-dirs): crmodverdir $(objtree)/Module.symvers
$(Q)$(MAKE) $(build)=$(patsubst _module_%,%,$@)
@@ -1114,11 +1114,11 @@ modules: $(module-dirs)
@echo ' Building modules, stage 2.';
$(Q)$(MAKE) -rR -f $(srctree)/scripts/Makefile.modpost
-.PHONY: modules_install
+PHONY += modules_install
modules_install: _emodinst_ _emodinst_post
-install-dir := $(if $(INSTALL_MOD_DIR),$(INSTALL_MOD_DIR),extra)
-.PHONY: _emodinst_
+install-dir := $(if $(INSTALL_MOD_DIR),$(INSTALL_MOD_DIR),extra)
+PHONY += _emodinst_
_emodinst_:
$(Q)rm -rf $(MODLIB)/$(install-dir)
$(Q)mkdir -p $(MODLIB)/$(install-dir)
@@ -1133,13 +1133,13 @@ quiet_cmd_depmod = DEPMOD $(KERNELRELEASE)
$(KERNELRELEASE); \
fi
-.PHONY: _emodinst_post
+PHONY += _emodinst_post
_emodinst_post: _emodinst_
$(call cmd,depmod)
clean-dirs := $(addprefix _clean_,$(KBUILD_EXTMOD))
-.PHONY: $(clean-dirs) clean
+PHONY += $(clean-dirs) clean
$(clean-dirs):
$(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@)
@@ -1161,7 +1161,7 @@ help:
@echo ''
# Dummies...
-.PHONY: prepare scripts
+PHONY += prepare scripts
prepare: ;
scripts: ;
endif # KBUILD_EXTMOD
@@ -1274,7 +1274,7 @@ namespacecheck:
endif #ifeq ($(config-targets),1)
endif #ifeq ($(mixed-targets),1)
-.PHONY: checkstack
+PHONY += checkstack
checkstack:
$(OBJDUMP) -d vmlinux $$(find . -name '*.ko') | \
$(PERL) $(src)/scripts/checkstack.pl $(ARCH)
@@ -1357,4 +1357,10 @@ clean := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.clean obj
endif # skip-makefile
+PHONY += FORCE
FORCE:
+
+
+# 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.
+.PHONY: $(PHONY)
diff --git a/arch/arm/Makefile b/arch/arm/Makefile
index fbfc14a56b9..585d334234f 100644
--- a/arch/arm/Makefile
+++ b/arch/arm/Makefile
@@ -1,6 +1,9 @@
#
# arch/arm/Makefile
#
+# This file is included by the global makefile so that you can add your own
+# architecture-specific flags and dependencies.
+#
# This file is subject to the terms and conditions of the GNU General Public
# License. See the file "COPYING" in the main directory of this archive
# for more details.
@@ -176,7 +179,7 @@ endif
archprepare: maketools
-.PHONY: maketools FORCE
+PHONY += maketools FORCE
maketools: include/linux/version.h include/asm-arm/.arch FORCE
$(Q)$(MAKE) $(build)=arch/arm/tools include/asm-arm/mach-types.h
diff --git a/arch/arm/boot/Makefile b/arch/arm/boot/Makefile
index a174d63395e..ec9c400c7f8 100644
--- a/arch/arm/boot/Makefile
+++ b/arch/arm/boot/Makefile
@@ -1,6 +1,9 @@
#
# arch/arm/boot/Makefile
#
+# This file is included by the global makefile so that you can add your own
+# architecture-specific flags and dependencies.
+#
# This file is subject to the terms and conditions of the GNU General Public
# License. See the file "COPYING" in the main directory of this archive
# for more details.
@@ -73,7 +76,7 @@ $(obj)/bootpImage: $(obj)/bootp/bootp FORCE
$(call if_changed,objcopy)
@echo ' Kernel: $@ is ready'
-.PHONY: initrd FORCE
+PHONY += initrd FORCE
initrd:
@test "$(INITRD_PHYS)" != "" || \
(echo This machine does not support INITRD; exit -1)
diff --git a/arch/arm/boot/bootp/Makefile b/arch/arm/boot/bootp/Makefile
index 8e8879b6b3d..c394e305447 100644
--- a/arch/arm/boot/bootp/Makefile
+++ b/arch/arm/boot/bootp/Makefile
@@ -1,6 +1,9 @@
#
# linux/arch/arm/boot/bootp/Makefile
#
+# This file is included by the global makefile so that you can add your own
+# architecture-specific flags and dependencies.
+#
LDFLAGS_bootp :=-p --no-undefined -X \
--defsym initrd_phys=$(INITRD_PHYS) \
@@ -21,4 +24,4 @@ $(obj)/kernel.o: arch/arm/boot/zImage FORCE
$(obj)/initrd.o: $(INITRD) FORCE
-.PHONY: $(INITRD) FORCE
+PHONY += $(INITRD) FORCE
diff --git a/arch/arm26/Makefile b/arch/arm26/Makefile
index 844a9e46886..fe91eda98a9 100644
--- a/arch/arm26/Makefile
+++ b/arch/arm26/Makefile
@@ -1,6 +1,9 @@
#
# arch/arm26/Makefile
#
+# This file is included by the global makefile so that you can add your own
+# architecture-specific flags and dependencies.
+#
# This file is subject to the terms and conditions of the GNU General Public
# License. See the file "COPYING" in the main directory of this archive
# for more details.
@@ -49,9 +52,9 @@ all: zImage
boot := arch/arm26/boot
-.PHONY: maketools FORCE
+PHONY += maketools FORCE
maketools: FORCE
-
+
# Convert bzImage to zImage
bzImage: vmlinux
diff --git a/arch/arm26/boot/Makefile b/arch/arm26/boot/Makefile
index b5c2277654d..68acb7b0d47 100644
--- a/arch/arm26/boot/Makefile
+++ b/arch/arm26/boot/Makefile
@@ -1,6 +1,9 @@
#
# arch/arm26/boot/Makefile
#
+# This file is included by the global makefile so that you can add your own
+# architecture-specific flags and dependencies.
+#
# This file is subject to the terms and conditions of the GNU General Public
# License. See the file "COPYING" in the main directory of this archive
# for more details.
@@ -60,7 +63,7 @@ $(obj)/xipImage: vmlinux FORCE
@echo ' Kernel: $@ is ready'
endif
-.PHONY: initrd
+PHONY += initrd
initrd:
@test "$(INITRD_PHYS)" != "" || \
(echo This machine does not support INITRD; exit -1)
diff --git a/arch/i386/Makefile b/arch/i386/Makefile
index 36bef6543ac..ff6973a85c8 100644
--- a/arch/i386/Makefile
+++ b/arch/i386/Makefile
@@ -99,8 +99,8 @@ AFLAGS += $(mflags-y)
boot := arch/i386/boot
-.PHONY: zImage bzImage compressed zlilo bzlilo \
- zdisk bzdisk fdimage fdimage144 fdimage288 install
+PHONY += zImage bzImage compressed zlilo bzlilo \
+ zdisk bzdisk fdimage fdimage144 fdimage288 install
all: bzImage
diff --git a/arch/ia64/Makefile b/arch/ia64/Makefile
index f722e1a2594..80ea7506fa1 100644
--- a/arch/ia64/Makefile
+++ b/arch/ia64/Makefile
@@ -1,6 +1,9 @@
#
# ia64/Makefile
#
+# This file is included by the global makefile so that you can add your own
+# architecture-specific flags and dependencies.
+#
# This file is subject to the terms and conditions of the GNU General Public
# License. See the file "COPYING" in the main directory of this archive
# for more details.
@@ -62,7 +65,7 @@ drivers-$(CONFIG_OPROFILE) += arch/ia64/oprofile/
boot := arch/ia64/hp/sim/boot
-.PHONY: boot compressed check
+PHONY += boot compressed check
all: compressed unwcheck
diff --git a/arch/m32r/Makefile b/arch/m32r/Makefile
index 983d438b14b..229f66fc8e5 100644
--- a/arch/m32r/Makefile
+++ b/arch/m32r/Makefile
@@ -1,6 +1,9 @@
#
# m32r/Makefile
#
+# This file is included by the global makefile so that you can add your own
+# architecture-specific flags and dependencies.
+#
LDFLAGS :=
OBJCOPYFLAGS := -O binary -R .note -R .comment -S
@@ -39,7 +42,7 @@ drivers-$(CONFIG_OPROFILE) += arch/m32r/oprofile/
boot := arch/m32r/boot
-.PHONY: zImage
+PHONY += zImage
all: zImage
diff --git a/arch/powerpc/Makefile b/arch/powerpc/Makefile
index 5500ab55d04..5787d55a20b 100644
--- a/arch/powerpc/Makefile
+++ b/arch/powerpc/Makefile
@@ -150,7 +150,7 @@ CPPFLAGS_vmlinux.lds := -Upowerpc
BOOT_TARGETS = zImage zImage.initrd znetboot znetboot.initrd vmlinux.sm uImage
-.PHONY: $(BOOT_TARGETS)
+PHONY += $(BOOT_TARGETS)
boot := arch/$(ARCH)/boot
diff --git a/arch/ppc/Makefile b/arch/ppc/Makefile
index 98e940beeb3..9fbdf54ba2b 100644
--- a/arch/ppc/Makefile
+++ b/arch/ppc/Makefile
@@ -82,7 +82,7 @@ drivers-$(CONFIG_OPROFILE) += arch/powerpc/oprofile/
BOOT_TARGETS = zImage zImage.initrd znetboot znetboot.initrd vmlinux.sm
-.PHONY: $(BOOT_TARGETS)
+PHONY += $(BOOT_TARGETS)
all: uImage zImage
diff --git a/arch/ppc/boot/Makefile b/arch/ppc/boot/Makefile
index efd8ce515d5..84eec0bef93 100644
--- a/arch/ppc/boot/Makefile
+++ b/arch/ppc/boot/Makefile
@@ -1,6 +1,9 @@
#
# arch/ppc/boot/Makefile
#
+# This file is included by the global makefile so that you can add your own
+# architecture-specific flags and dependencies.
+#
# This file is subject to the terms and conditions of the GNU General Public
# License. See the file "COPYING" in the main directory of this archive
# for more details.
@@ -25,7 +28,7 @@ subdir- += simple openfirmware
hostprogs-y := $(addprefix utils/, addnote mknote hack-coff mkprep mkbugboot mktree)
-.PHONY: $(BOOT_TARGETS) $(bootdir-y)
+PHONY += $(BOOT_TARGETS) $(bootdir-y)
$(BOOT_TARGETS): $(bootdir-y)
diff --git a/arch/ppc/boot/openfirmware/Makefile b/arch/ppc/boot/openfirmware/Makefile
index 2a411ec2e65..66b73974375 100644
--- a/arch/ppc/boot/openfirmware/Makefile
+++ b/arch/ppc/boot/openfirmware/Makefile
@@ -1,5 +1,8 @@
# Makefile for making bootable images on various OpenFirmware machines.
#
+# This file is included by the global makefile so that you can add your own
+# architecture-specific flags and dependencies.
+#
# Paul Mackerras January 1997
# XCOFF bootable images for PowerMacs
# Geert Uytterhoeven September 1997
@@ -86,7 +89,7 @@ $(images)/zImage.chrp-rs6k $(images)/zImage.initrd.chrp-rs6k: \
# The targets used on the make command-line
-.PHONY: zImage zImage.initrd
+PHONY += zImage zImage.initrd
zImage: $(images)/zImage.chrp \
$(images)/zImage.chrp-rs6k
@echo ' kernel: $@ is ready ($<)'
@@ -96,7 +99,7 @@ zImage.initrd: $(images)/zImage.initrd.chrp \
TFTPIMAGE := /tftpboot/zImage
-.PHONY: znetboot znetboot.initrd
+PHONY += znetboot znetboot.initrd
znetboot: $(images)/zImage.chrp
cp $(images)/zImage.chrp $(TFTPIMAGE).chrp$(END)
@echo ' kernel: $@ is ready ($<)'
diff --git a/arch/sh/Makefile b/arch/sh/Makefile
index 08c9515c480..c72e17a96ee 100644
--- a/arch/sh/Makefile
+++ b/arch/sh/Makefile
@@ -172,7 +172,7 @@ include/asm-sh/.mach: $(wildcard include/config/sh/*.h) include/config/MARKER
archprepare: maketools include/asm-sh/.cpu include/asm-sh/.mach
-.PHONY: maketools FORCE
+PHONY += maketools FORCE
maketools: include/linux/version.h FORCE
$(Q)$(MAKE) $(build)=arch/sh/tools include/asm-sh/machtypes.h
diff --git a/arch/um/Makefile b/arch/um/Makefile
index c58b657f009..8d14c7a831b 100644
--- a/arch/um/Makefile
+++ b/arch/um/Makefile
@@ -1,4 +1,7 @@
-#
+#
+# This file is included by the global makefile so that you can add your own
+# architecture-specific flags and dependencies.
+#
# Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
# Licensed under the GPL
#
@@ -88,7 +91,7 @@ CONFIG_KERNEL_HALF_GIGS ?= 0
SIZE = (($(CONFIG_NEST_LEVEL) + $(CONFIG_KERNEL_HALF_GIGS)) * 0x20000000)
-.PHONY: linux
+PHONY += linux
all: linux
diff --git a/arch/x86_64/Makefile b/arch/x86_64/Makefile
index d7fd46479c5..7405dfd6522 100644
--- a/arch/x86_64/Makefile
+++ b/arch/x86_64/Makefile
@@ -67,8 +67,8 @@ drivers-$(CONFIG_OPROFILE) += arch/x86_64/oprofile/
boot := arch/x86_64/boot
-.PHONY: bzImage bzlilo install archmrproper \
- fdimage fdimage144 fdimage288 archclean
+PHONY += bzImage bzlilo install archmrproper \
+ fdimage fdimage144 fdimage288 archclean
#Default target when executing "make"
all: bzImage
diff --git a/scripts/Kbuild.include b/scripts/Kbuild.include
index c3d2e4e068c..59620b1554e 100644
--- a/scripts/Kbuild.include
+++ b/scripts/Kbuild.include
@@ -116,16 +116,18 @@ make-cmd = $(subst \#,\\\#,$(subst $$,$$$$,$(call escsq,$(cmd_$(1)))))
# function to only execute the passed command if necessary
# >'< substitution is for echo to work, >$< substitution to preserve $ when reloading .cmd file
# note: when using inline perl scripts [perl -e '...$$t=1;...'] in $(cmd_xxx) double $$ your perl vars
-#
-if_changed = $(if $(strip $? $(call arg-check, $(cmd_$(1)), $(cmd_$@)) ), \
+#
+if_changed = $(if $(strip $(filter-out $(PHONY),$?) \
+ $(call arg-check, $(cmd_$(1)), $(cmd_$@)) ), \
@set -e; \
$(echo-cmd) $(cmd_$(1)); \
echo 'cmd_$@ := $(make-cmd)' > $(@D)/.$(@F).cmd)
# execute the command and also postprocess generated .d dependencies
# file
-if_changed_dep = $(if $(strip $? $(filter-out FORCE $(wildcard $^),$^)\
- $(call arg-check, $(cmd_$(1)), $(cmd_$@)) ), \
+if_changed_dep = $(if $(strip $(filter-out $(PHONY),$?) \
+ $(filter-out FORCE $(wildcard $^),$^) \
+ $(call arg-check, $(cmd_$(1)), $(cmd_$@)) ), \
@set -e; \
$(echo-cmd) $(cmd_$(1)); \
scripts/basic/fixdep $(depfile) $@ '$(make-cmd)' > $(@D)/.$(@F).tmp; \
@@ -135,6 +137,7 @@ if_changed_dep = $(if $(strip $? $(filter-out FORCE $(wildcard $^),$^)\
# Usage: $(call if_changed_rule,foo)
# will check if $(cmd_foo) changed, or any of the prequisites changed,
# and if so will execute $(rule_foo)
-if_changed_rule = $(if $(strip $? $(call arg-check, $(cmd_$(1)), $(cmd_$@)) ),\
+if_changed_rule = $(if $(strip $(filter-out $(PHONY),$?) \
+ $(call arg-check, $(cmd_$(1)), $(cmd_$@)) ),\
@set -e; \
$(rule_$(1)))
diff --git a/scripts/Makefile.build b/scripts/Makefile.build
index 6ac96ea92bf..7afe3e76cb5 100644
--- a/scripts/Makefile.build
+++ b/scripts/Makefile.build
@@ -4,7 +4,7 @@
src := $(obj)
-.PHONY: __build
+PHONY := __build
__build:
# Read .config if it exist, otherwise ignore
@@ -308,14 +308,14 @@ targets += $(multi-used-y) $(multi-used-m)
# Descending
# ---------------------------------------------------------------------------
-.PHONY: $(subdir-ym)
+PHONY += $(subdir-ym)
$(subdir-ym):
$(Q)$(MAKE) $(build)=$@
# Add FORCE to the prequisites of a target to force it to be always rebuilt.
# ---------------------------------------------------------------------------
-.PHONY: FORCE
+PHONY += FORCE
FORCE:
@@ -330,3 +330,9 @@ cmd_files := $(wildcard $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd))
ifneq ($(cmd_files),)
include $(cmd_files)
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.
+
+.PHONY: $(PHONY)
diff --git a/scripts/Makefile.clean b/scripts/Makefile.clean
index 8974ea5fc87..cff33498fa1 100644
--- a/scripts/Makefile.clean
+++ b/scripts/Makefile.clean
@@ -4,7 +4,7 @@
src := $(obj)
-.PHONY: __clean
+PHONY := __clean
__clean:
# Shorthand for $(Q)$(MAKE) scripts/Makefile.clean obj=dir
@@ -87,10 +87,16 @@ endif
# Descending
# ---------------------------------------------------------------------------
-.PHONY: $(subdir-ymn)
+PHONY += $(subdir-ymn)
$(subdir-ymn):
$(Q)$(MAKE) $(clean)=$@
# If quiet is set, only print short version of command
cmd = @$(if $($(quiet)cmd_$(1)),echo ' $($(quiet)cmd_$(1))' &&) $(cmd_$(1))
+
+
+# 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.
+
+.PHONY: $(PHONY)
diff --git a/scripts/Makefile.modinst b/scripts/Makefile.modinst
index 23fd1bdc25c..2686dd5dce8 100644
--- a/scripts/Makefile.modinst
+++ b/scripts/Makefile.modinst
@@ -2,7 +2,7 @@
# Installing modules
# ==========================================================================
-.PHONY: __modinst
+PHONY := __modinst
__modinst:
include scripts/Kbuild.include
@@ -12,7 +12,7 @@ include scripts/Kbuild.include
__modules := $(sort $(shell grep -h '\.ko' /dev/null $(wildcard $(MODVERDIR)/*.mod)))
modules := $(patsubst %.o,%.ko,$(wildcard $(__modules:.ko=.o)))
-.PHONY: $(modules)
+PHONY += $(modules)
__modinst: $(modules)
@:
@@ -27,3 +27,9 @@ modinst_dir = $(if $(KBUILD_EXTMOD),$(ext-mod-dir),kernel/$(@D))
$(modules):
$(call cmd,modules_install,$(MODLIB)/$(modinst_dir))
+
+
+# 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.
+
+.PHONY: $(PHONY)
diff --git a/scripts/Makefile.modpost b/scripts/Makefile.modpost
index 563e3c5bd8d..0cfbe1cf243 100644
--- a/scripts/Makefile.modpost
+++ b/scripts/Makefile.modpost
@@ -32,7 +32,7 @@
# Step 4 is solely used to allow module versioning in external modules,
# where the CRC of each module is retrieved from the Module.symers file.
-.PHONY: _modpost
+PHONY := _modpost
_modpost: __modpost
include .config
@@ -60,7 +60,7 @@ quiet_cmd_modpost = MODPOST
$(if $(KBUILD_EXTMOD),-o $(modulesymfile)) \
$(filter-out FORCE,$^)
-.PHONY: __modpost
+PHONY += __modpost
__modpost: $(wildcard vmlinux) $(modules:.ko=.o) FORCE
$(call cmd,modpost)
@@ -97,7 +97,7 @@ targets += $(modules)
# Add FORCE to the prequisites of a target to force it to be always rebuilt.
# ---------------------------------------------------------------------------
-.PHONY: FORCE
+PHONY += FORCE
FORCE:
@@ -112,3 +112,9 @@ cmd_files := $(wildcard $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd))
ifneq ($(cmd_files),)
include $(cmd_files)
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.
+
+.PHONY: $(PHONY)
diff --git a/scripts/kconfig/Makefile b/scripts/kconfig/Makefile
index 52809450bee..e6499db4c8c 100644
--- a/scripts/kconfig/Makefile
+++ b/scripts/kconfig/Makefile
@@ -2,7 +2,7 @@
# Kernel configuration targets
# These targets are used from top-level makefile
-.PHONY: oldconfig xconfig gconfig menuconfig config silentoldconfig update-po-config
+PHONY += oldconfig xconfig gconfig menuconfig config silentoldconfig update-po-config
xconfig: $(obj)/qconf
$< arch/$(ARCH)/Kconfig
@@ -42,7 +42,7 @@ update-po-config: $(obj)/kxgettext
$(Q)rm -f arch/um/Kconfig_arch
$(Q)rm -f scripts/kconfig/linux_*.pot scripts/kconfig/config.pot
-.PHONY: randconfig allyesconfig allnoconfig allmodconfig defconfig
+PHONY += randconfig allyesconfig allnoconfig allmodconfig defconfig
randconfig: $(obj)/conf
$< -r arch/$(ARCH)/Kconfig
diff --git a/scripts/kconfig/lxdialog/Makefile b/scripts/kconfig/lxdialog/Makefile
index bbf4887cff7..a8b02632624 100644
--- a/scripts/kconfig/lxdialog/Makefile
+++ b/scripts/kconfig/lxdialog/Makefile
@@ -7,10 +7,10 @@ check-lxdialog := $(srctree)/$(src)/check-lxdialog.sh
# we really need to do so. (Do not call gcc as part of make mrproper)
HOST_EXTRACFLAGS = $(shell $(CONFIG_SHELL) $(check-lxdialog) -ccflags)
HOST_LOADLIBES = $(shell $(CONFIG_SHELL) $(check-lxdialog) -ldflags $(HOSTCC))
-
-HOST_EXTRACFLAGS += -DLOCALE
-.PHONY: dochecklxdialog
+HOST_EXTRACFLAGS += -DLOCALE
+
+PHONY += dochecklxdialog
$(obj)/dochecklxdialog:
$(Q)$(CONFIG_SHELL) $(check-lxdialog) -check $(HOSTCC) $(HOST_LOADLIBES)
diff --git a/scripts/package/Makefile b/scripts/package/Makefile
index c201ef001f0..d3038b7643a 100644
--- a/scripts/package/Makefile
+++ b/scripts/package/Makefile
@@ -32,7 +32,7 @@ MKSPEC := $(srctree)/scripts/package/mkspec
PREV := set -e; cd ..;
# rpm-pkg
-.PHONY: rpm-pkg rpm
+PHONY += rpm-pkg rpm
$(objtree)/kernel.spec: $(MKSPEC) $(srctree)/Makefile
$(CONFIG_SHELL) $(MKSPEC) > $@
@@ -54,10 +54,10 @@ rpm-pkg rpm: $(objtree)/kernel.spec
clean-files := $(objtree)/kernel.spec
# binrpm-pkg
-.PHONY: binrpm-pkg
+PHONY += binrpm-pkg
$(objtree)/binkernel.spec: $(MKSPEC) $(srctree)/Makefile
$(CONFIG_SHELL) $(MKSPEC) prebuilt > $@
-
+
binrpm-pkg: $(objtree)/binkernel.spec
$(MAKE) KBUILD_SRC=
set -e; \
@@ -72,7 +72,7 @@ clean-files += $(objtree)/binkernel.spec
# Deb target
# ---------------------------------------------------------------------------
#
-.PHONY: deb-pkg
+PHONY += deb-pkg
deb-pkg:
$(MAKE) KBUILD_SRC=
$(CONFIG_SHELL) $(srctree)/scripts/package/builddeb
@@ -82,7 +82,7 @@ clean-dirs += $(objtree)/debian/
# tarball targets
# ---------------------------------------------------------------------------
-.PHONY: tar%pkg
+PHONY += tar%pkg
tar%pkg:
$(MAKE) KBUILD_SRC=
$(CONFIG_SHELL) $(srctree)/scripts/package/buildtar $@