$(Q)$(MAKE) $(build)=$@
# Build the kernel release string
-# The KERNELRELEASE is stored in a file named include/config/kernel.release
-# to be used when executing for example make install or make modules_install
#
-# Take the contents of any files called localversion* and the config
-# variable CONFIG_LOCALVERSION and append them to KERNELRELEASE.
-# LOCALVERSION from the command line override all of this
+# The KERNELRELEASE value built here is stored in the file
+# include/config/kernel.release, and is used when executing several
+# make targets, such as "make install" or "make modules_install."
+#
+# The eventual kernel release string consists of the following fields,
+# shown in a hierarchical format to show how smaller parts are concatenated
+# to form the larger and final value, with values coming from places like
+# the Makefile, kernel config options, make command line options and/or
+# SCM tag information.
+#
+# $(KERNELVERSION)
+# $(VERSION) eg, 2
+# $(PATCHLEVEL) eg, 6
+# $(SUBLEVEL) eg, 18
+# $(EXTRAVERSION) eg, -rc6
+# $(localver-full)
+# $(localver)
+# localversion* (all localversion* files)
+# $(CONFIG_LOCALVERSION) (from kernel config setting)
+# $(localver-auto) (only if CONFIG_LOCALVERSION_AUTO is set)
+# ./scripts/setlocalversion (SCM tag, if one exists)
+# $(LOCALVERSION) (from make command line if provided)
+#
+# Note how the final $(localver-auto) string is included *only* if the
+# kernel config option CONFIG_LOCALVERSION_AUTO is selected. Also, at the
+# moment, only git is supported but other SCMs can edit the script
+# scripts/setlocalversion and add the appropriate checks as needed.
nullstring :=
space := $(nullstring) # end of line
INSTALL_HDR_PATH=$(objtree)/usr
export INSTALL_HDR_PATH
+HDRARCHES=$(filter-out generic,$(patsubst $(srctree)/include/asm-%/Kbuild,%,$(wildcard $(srctree)/include/asm-*/Kbuild)))
+
+PHONY += headers_install_all
+headers_install_all: include/linux/version.h scripts_basic FORCE
+ $(Q)$(MAKE) $(build)=scripts scripts/unifdef
+ $(Q)for arch in $(HDRARCHES); do \
+ $(MAKE) ARCH=$$arch -f $(srctree)/scripts/Makefile.headersinst obj=include BIASMDIR=-bi-$$arch ;\
+ done
+
PHONY += headers_install
headers_install: include/linux/version.h scripts_basic FORCE
+ @if [ ! -r include/asm-$(ARCH)/Kbuild ]; then \
+ echo '*** Error: Headers not exportable for this architecture ($(ARCH))'; \
+ exit 1 ; fi
$(Q)$(MAKE) $(build)=scripts scripts/unifdef
- $(Q)rm -rf $(INSTALL_HDR_PATH)/include
$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.headersinst obj=include
PHONY += headers_check
help:
@echo 'Cleaning targets:'
- @echo ' clean - remove most generated files but keep the config'
+ @echo ' clean - remove most generated files but keep the config and'
+ @echo ' enough build support to build external modules'
@echo ' mrproper - remove all generated files + config + various backup files'
- @echo ' distclean - mrproper + patch files'
+ @echo ' distclean - mrproper + remove editor backup and patch files'
@echo ''
@echo 'Configuration targets:'
@$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help
@echo ' cscope - Generate cscope index'
@echo ' kernelrelease - Output the release version string'
@echo ' kernelversion - Output the version stored in Makefile'
- @echo ' headers_install - Install sanitised kernel headers to INSTALL_HDR_PATH'
+ @if [ -r include/asm-$(ARCH)/Kbuild ]; then \
+ echo ' headers_install - Install sanitised kernel headers to INSTALL_HDR_PATH'; \
+ fi
@echo ' (default: $(INSTALL_HDR_PATH))'
@echo ''
@echo 'Static analysers'
@echo ' checkstack - Generate a list of stack hogs'
@echo ' namespacecheck - Name space analysis on compiled kernel'
- @echo ' headers_check - Sanity check on exported headers'
+ @if [ -r include/asm-$(ARCH)/Kbuild ]; then \
+ echo ' headers_check - Sanity check on exported headers'; \
+ fi
@echo ''
@echo 'Kernel packaging:'
@$(MAKE) $(build)=$(package-dir) help
--langdef=kconfig \
--language-force=kconfig \
--regex-kconfig='/^[[:blank:]]*config[[:blank:]]+([[:alnum:]_]+)/\1/'; \
- $(all-defconfigs) | xargs $1 -a \
+ $(all-defconfigs) | xargs -r $1 -a \
--langdef=dotconfig \
--language-force=dotconfig \
--regex-dotconfig='/^#?[[:blank:]]*(CONFIG_[[:alnum:]_]+)/\1/'; \
$(all-sources) | xargs $1 -a; \
$(all-kconfigs) | xargs $1 -a \
--regex='/^[ \t]*config[ \t]+\([a-zA-Z0-9_]+\)/\1/'; \
- $(all-defconfigs) | xargs $1 -a \
+ $(all-defconfigs) | xargs -r $1 -a \
--regex='/^#?[ \t]?\(CONFIG_[a-zA-Z0-9_]+\)/\1/'; \
else \
$(all-sources) | xargs $1 -a; \
endif #ifeq ($(mixed-targets),1)
PHONY += checkstack kernelrelease kernelversion
+
+# Use $(SUBARCH) here instead of $(ARCH) so that this works for UML.
+# In the UML case, $(SUBARCH) is the name of the underlying
+# architecture, while for all other arches, it is the same as $(ARCH).
checkstack:
$(OBJDUMP) -d vmlinux $$(find . -name '*.ko') | \
- $(PERL) $(src)/scripts/checkstack.pl $(ARCH)
+ $(PERL) $(src)/scripts/checkstack.pl $(SUBARCH)
kernelrelease:
$(if $(wildcard include/config/kernel.release), $(Q)echo $(KERNELRELEASE), \