diff options
Diffstat (limited to 'Makefile')
| -rw-r--r-- | Makefile | 80 |
1 files changed, 40 insertions, 40 deletions
@@ -334,7 +334,7 @@ KALLSYMS = scripts/kallsyms PERL = perl CHECK = sparse -CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ +CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ $(CF) MODFLAGS = -DMODULE CFLAGS_MODULE = $(MODFLAGS) AFLAGS_MODULE = $(MODFLAGS) @@ -382,6 +382,9 @@ RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn --exclude CV scripts_basic: $(Q)$(MAKE) $(build)=scripts/basic +# To avoid any implicit rule to kick in, define an empty command. +scripts/basic/%: scripts_basic ; + .PHONY: outputmakefile # outputmakefile generate a Makefile to be placed in output directory, if # using a seperate output directory. This allows convinient use @@ -444,9 +447,8 @@ ifeq ($(config-targets),1) include $(srctree)/arch/$(ARCH)/Makefile export KBUILD_DEFCONFIG -config: scripts_basic outputmakefile FORCE - $(Q)$(MAKE) $(build)=scripts/kconfig $@ -%config: scripts_basic outputmakefile FORCE +config %config: scripts_basic outputmakefile FORCE + $(Q)mkdir -p include/linux $(Q)$(MAKE) $(build)=scripts/kconfig $@ else @@ -489,6 +491,7 @@ include .config # If .config is newer than include/linux/autoconf.h, someone tinkered # with it and forgot to run make oldconfig include/linux/autoconf.h: .config + $(Q)mkdir -p include/linux $(Q)$(MAKE) -f $(srctree)/Makefile silentoldconfig else # Dummy target needed, because used as prerequisite @@ -641,8 +644,13 @@ quiet_cmd_vmlinux__ ?= LD $@ # Generate new vmlinux version quiet_cmd_vmlinux_version = GEN .version cmd_vmlinux_version = set -e; \ - . $(srctree)/scripts/mkversion > .tmp_version; \ - mv -f .tmp_version .version; \ + if [ ! -r .version ]; then \ + rm -f .version; \ + echo 1 >.version; \ + else \ + mv .version .old_version; \ + expr 0$$(cat .old_version) + 1 >.version; \ + fi; \ $(MAKE) $(build)=init # Generate System.map @@ -756,6 +764,7 @@ endif # ifdef CONFIG_KALLSYMS # vmlinux image - including updated kernel symbols vmlinux: $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) $(kallsyms.o) FORCE $(call if_changed_rule,vmlinux__) + $(Q)rm -f .old_version # The actual objects are generated when descending, # make sure no implicit rule kicks in @@ -768,22 +777,27 @@ $(sort $(vmlinux-init) $(vmlinux-main)) $(vmlinux-lds): $(vmlinux-dirs) ; # Error messages still appears in the original language .PHONY: $(vmlinux-dirs) -$(vmlinux-dirs): prepare-all scripts +$(vmlinux-dirs): prepare scripts $(Q)$(MAKE) $(build)=$@ # Things we need to do before we recursively start building the kernel -# or the modules are listed in "prepare-all". -# A multi level approach is used. prepare1 is updated first, then prepare0. -# prepare-all is the collection point for the prepare targets. +# or the modules are listed in "prepare". +# A multi level approach is used. prepareN is processed before prepareN-1. +# archprepare is used in arch Makefiles and when processed asm symlink, +# version.h and scripts_basic is processed / created. + +# Listed in dependency order +.PHONY: prepare archprepare prepare0 prepare1 prepare2 prepare3 -.PHONY: prepare-all prepare prepare0 prepare1 prepare2 +# prepare-all is deprecated, use prepare as valid replacement +.PHONY: prepare-all -# prepare2 is used to check if we are building in a separate output directory, +# prepare3 is used to check if we are building in a separate output directory, # and if so do: # 1) Check that make has not been executed in the kernel src $(srctree) # 2) Create the include2 directory, used for the second asm symlink -prepare2: +prepare3: ifneq ($(KBUILD_SRC),) @echo ' Using $(srctree) as source for kernel' $(Q)if [ -f $(srctree)/.config ]; then \ @@ -795,18 +809,23 @@ ifneq ($(KBUILD_SRC),) $(Q)ln -fsn $(srctree)/include/asm-$(ARCH) include2/asm endif -# prepare1 creates a makefile if using a separate output directory -prepare1: prepare2 outputmakefile +# prepare2 creates a makefile if using a separate output directory +prepare2: prepare3 outputmakefile -prepare0: prepare1 include/linux/version.h include/asm \ +prepare1: prepare2 include/linux/version.h include/asm \ include/config/MARKER ifneq ($(KBUILD_MODULES),) $(Q)rm -rf $(MODVERDIR) $(Q)mkdir -p $(MODVERDIR) endif +archprepare: prepare1 scripts_basic + +prepare0: archprepare FORCE + $(Q)$(MAKE) $(build)=. + # All the preparing.. -prepare-all: prepare0 prepare +prepare prepare-all: prepare0 # Leave this as default for preprocessing vmlinux.lds.S, which is now # done in arch/$(ARCH)/kernel/Makefile @@ -845,7 +864,7 @@ include/asm: # Split autoconf.h into include/linux/config/* -include/config/MARKER: include/linux/autoconf.h +include/config/MARKER: scripts/basic/split-include include/linux/autoconf.h @echo ' SPLIT include/linux/autoconf.h -> include/config/*' @scripts/basic/split-include include/linux/autoconf.h include/config @touch $@ @@ -897,7 +916,7 @@ modules: $(vmlinux-dirs) $(if $(KBUILD_BUILTIN),vmlinux) # Target to prepare building external modules .PHONY: modules_prepare -modules_prepare: prepare-all scripts +modules_prepare: prepare scripts # Target to install modules .PHONY: modules_install @@ -949,26 +968,6 @@ modules modules_install: FORCE endif # CONFIG_MODULES -# Generate asm-offsets.h -# --------------------------------------------------------------------------- - -define filechk_gen-asm-offsets - (set -e; \ - echo "#ifndef __ASM_OFFSETS_H__"; \ - echo "#define __ASM_OFFSETS_H__"; \ - echo "/*"; \ - echo " * DO NOT MODIFY."; \ - echo " *"; \ - echo " * This file was generated by arch/$(ARCH)/Makefile"; \ - echo " *"; \ - echo " */"; \ - echo ""; \ - sed -ne "/^->/{s:^->\([^ ]*\) [\$$#]*\([^ ]*\) \(.*\):#define \1 \2 /* \3 */:; s:->::; p;}"; \ - echo ""; \ - echo "#endif" ) -endef - - ### # Cleaning is done on three levels. # make clean Delete most generated files @@ -991,7 +990,7 @@ MRPROPER_FILES += .config .config.old include/asm .version \ # clean: rm-dirs := $(CLEAN_DIRS) clean: rm-files := $(CLEAN_FILES) -clean-dirs := $(addprefix _clean_,$(vmlinux-alldirs)) +clean-dirs := $(addprefix _clean_,$(srctree) $(vmlinux-alldirs)) .PHONY: $(clean-dirs) clean archclean $(clean-dirs): @@ -1070,6 +1069,7 @@ help: @echo ' rpm - Build a kernel as an RPM package' @echo ' tags/TAGS - Generate tags file for editors' @echo ' cscope - Generate cscope index' + @echo ' kernelrelease - Output the release version string' @echo '' @echo 'Static analysers' @echo ' buildcheck - List dangling references to vmlinux discarded sections' |
