diff options
Diffstat (limited to 'Makefile')
| -rw-r--r-- | Makefile | 185 |
1 files changed, 185 insertions, 0 deletions
diff --git a/Makefile b/Makefile new file mode 100644 index 0000000..c99b962 --- /dev/null +++ b/Makefile @@ -0,0 +1,185 @@ +SRCROOT = . + +# *DOCUMENTATION* +# To see a list of typical targets execute "make help" + +# kbuild compatibility +export srctree := $(or $(KBUILD_SRC),$(shell pwd)) +export objtree := $(shell pwd) +export KLIBCSRC := usr/klibc +export VERSION := $(shell cat $(srctree)/$(KLIBCSRC)/version) +export KLIBCINC := usr/include +export KLIBCOBJ := usr/klibc +export KLIBCKERNELSRC ?= linux + +export VPATH := $(srctree) + +include $(srctree)/scripts/Kbuild.include + +KLIBCROSS ?= $(CROSS_COMPILE) +export KLIBCROSS +export CC := $(KLIBCROSS)gcc +export LD := $(KLIBCROSS)ld +export AR := $(KLIBCROSS)ar +export RANLIB := $(KLIBCROSS)ranlib +export STRIP := $(KLIBCROSS)strip +export NM := $(KLIBCROSS)nm +export OBJCOPY := $(KLIBCROSS)objcopy +export OBJDUMP := $(KLIBCROSS)objdump + +NOSTDINC_FLAGS := -nostdlib -nostdinc -isystem $(shell $(CC) -print-file-name=include) + +ARCH := $(shell uname -m | sed -e s/i.86/i386/ \ + -e s/parisc64/parisc/ -e s/sun4u/sparc64/ \ + -e s/arm.*/arm/ -e s/sa110/arm/ \ + -e s/aarch64.*/arm64/ -e s/sh.*/sh/ \ + -e s/ppc64le/ppc64/) +export KLIBCARCH ?= $(ARCH) +export KLIBCARCHDIR := $(shell echo $(KLIBCARCH) | sed -e s/s390x/s390/) + +export HOSTCC := gcc +export HOSTCFLAGS := -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer +export PERL := perl + +# Location for installation +export prefix = /usr +export bindir = $(prefix)/bin +export libdir = $(prefix)/lib +export mandir = $(prefix)/man +export INSTALLDIR = $(prefix)/lib/klibc +export INSTALLROOT = + +# Create a fake .config as present in the kernel tree +# But if it exists leave it alone +$(if $(wildcard $(objtree)/.config),,\ + $(shell cp $(srctree)/defconfig $(objtree)/.config)) + +# Prefix Make commands with $(Q) to silence them +# Use quiet_cmd_xxx, cmd_xxx to create nice output +# use make V=1 to get verbose output + +ifdef V + ifeq ("$(origin V)", "command line") + KBUILD_VERBOSE = $(V) + endif +endif +ifndef KBUILD_VERBOSE + KBUILD_VERBOSE = 0 +endif + +ifeq ($(KBUILD_VERBOSE),1) + quiet = + Q = +else + quiet=quiet_ + Q = @ +endif + +# If the user is running make -s (silent mode), suppress echoing of +# commands + +ifneq ($(findstring s,$(MAKEFLAGS)),) + quiet=silent_ +endif + +export quiet Q KBUILD_VERBOSE + +# Do not print "Entering directory ..." +MAKEFLAGS += --no-print-directory + +# Shorthand to call Kbuild.klibc +klibc := -f $(srctree)/scripts/Kbuild.klibc obj + +# Very first target +.PHONY: all klcc klibc +all: klcc klibc + +$(objtree)/.config: $(srctree)/defconfig + @echo "defconfig has changed, please remove or edit .config" + @false + +$(KLIBCKERNELSRC)/include: + @echo 'Missing kernel UAPI headers in $(KLIBCKERNELSRC)/include.' + @echo 'Install them by running:' + @echo ' make headers_install INSTALL_HDR_PATH=$(abspath $(KLIBCKERNELSRC))' + @echo 'in the kernel source directory.' + @false + +rpmbuild = $(shell which rpmbuild 2>/dev/null || which rpm) + +klibc.spec: klibc.spec.in $(KLIBCSRC)/version + sed -e 's/@@VERSION@@/$(VERSION)/g' < $< > $@ + +# Build klcc - it is the first target +klcc: $(objtree)/.config $(KLIBCKERNELSRC)/include + $(Q)$(MAKE) $(klibc)=klcc + +klibc: $(objtree)/.config $(KLIBCKERNELSRC)/include + $(Q)$(MAKE) $(klibc)=. + +test: klibc + $(Q)$(MAKE) $(klibc)=usr/klibc/tests + +help: + @echo 'Cleaning targets:' + @echo ' clean - Remove most generated files' + @echo ' mrproper - Remove all generated files + config' + @echo ' distclean - mprproper + editor backup + patch files' + @echo '' + @echo 'Build targets:' + @echo 'all - Build all targets' + @echo 'install - Install klibc' + @echo 'klcc - Wrapper around gcc to compile against klibc' + @echo 'test - Run klibc tests' + @echo + @echo 'Build options:' + @echo 'KLIBCKERNELSRC - Path to usr directory containing UAPI headers' + @echo 'make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build' + @echo 'make V=2 [targets] 2 => give reason for rebuild of target' + @echo + @echo 'Sample invocation:' + @echo 'make KLIBCKERNELSRC=`pwd`/../linux/usr/' + +### +# allow one to say make dir/file.o +# Caveat: works only for .c files where we have a Kbuild file in same dir +%.o: %.c FORCE + $(Q)$(MAKE) $(klibc)=$(dir $<) $(dir $<)$(notdir $@) + +%.s: %.c FORCE + $(Q)$(MAKE) $(klibc)=$(dir $<) $(dir $<)$(notdir $@) + +%.i: %.c FORCE + $(Q)$(MAKE) $(klibc)=$(dir $<) $(dir $<)$(notdir $@) + +FORCE: ; +### +# clean: remove generated files +# mrproper does a full cleaning including .config and linux symlink +FIND_IGNORE := \( -name .git -o -name .pc \) -prune -o +quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),RM $(wildcard $(rm-files))) + cmd_rmfiles = rm -f $(rm-files) +clean: + $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.clean obj=. + $(Q)find . $(FIND_IGNORE) \ + \( -name *.o -o -name *.a -o -name '.*.cmd' -o \ + -name '.*.d' -o -name '.*.tmp' \) \ + -type f -print | xargs rm -f + +rm-files := $(objtree)/.config linux +distclean mrproper: clean + $(Q)find . $(FIND_IGNORE) \ + \( -name '*.orig' -o -name '*.rej' -o -name '*~' \ + -o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \ + -o -name '.*.rej' -o -size 0 \ + -o -name '*%' -o -name '.*.cmd' -o -name 'core' \) \ + -type f -print | xargs rm -f + $(call cmd,rmfiles) + +install: all + $(Q)$(MAKE) -f $(srctree)/scripts/Kbuild.install obj=. + +# This does all the prep work needed to turn a freshly exported git repository +# into a release tarball tree +release: klibc.spec + rm -f .config |