Makefile

# Makefile for buildroot2
#
# Copyright (C) 1999-2005 by Erik Andersen <andersen@codepoet.org>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#

#--------------------------------------------------------------
# Just run 'make menuconfig', configure stuff, then run 'make'.
# You shouldn't need to mess with anything beyond this point...
#--------------------------------------------------------------
TOPDIR=./
CONFIG_CONFIG_IN = Config.in
CONFIG_DEFCONFIG = .defconfig
CONFIG = package/config
DATE:=$(shell date -u +%Y%m%d)

noconfig_targets := menuconfig config oldconfig randconfig \
	defconfig allyesconfig allnoconfig release tags \
	source-check help

# $(shell find . -name *_defconfig |sed 's/.*\///')

# Pull in the user's configuration file
ifeq ($(filter $(noconfig_targets),$(MAKECMDGOALS)),)
-include $(TOPDIR).config
endif
ifneq ($(BUILDROOT_DL_DIR),)
BR2_DL_DIR:=$(BUILDROOT_DL_DIR)
endif

# To put more focus on warnings, be less verbose as default
# Use 'make V=1' to see the full commands
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

CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \
	else if [ -x /bin/bash ]; then echo /bin/bash; \
	else echo sh; fi ; fi)

export CONFIG_SHELL quiet Q KBUILD_VERBOSE

ifndef HOSTAR
HOSTAR:=ar
endif
ifndef HOSTAS
HOSTAS:=as
endif
ifndef HOSTCC
HOSTCC:=gcc
else
endif
ifndef HOSTCXX
HOSTCXX:=g++
endif
ifndef HOSTLD
HOSTLD:=ld
endif
ifndef HOSTLN
HOSTLN:=ln
endif
HOSTAR :=$(shell $(CONFIG_SHELL) -c "which $(HOSTAR)" || type -p $(HOSTAR) || echo ar)
HOSTAS :=$(shell $(CONFIG_SHELL) -c "which $(HOSTAS)" || type -p $(HOSTAS) || echo as)
HOSTCC :=$(shell $(CONFIG_SHELL) -c "which $(HOSTCC)" || type -p $(HOSTCC) || echo gcc)
HOSTCXX:=$(shell $(CONFIG_SHELL) -c "which $(HOSTCXX)" || type -p $(HOSTCXX) || echo g++)
HOSTLD :=$(shell $(CONFIG_SHELL) -c "which $(HOSTLD)" || type -p $(HOSTLD) || echo ld)
HOSTLN :=$(shell $(CONFIG_SHELL) -c "which $(HOSTLN)" || type -p $(HOSTLN) || echo ln)
ifndef CFLAGS_FOR_BUILD
CFLAGS_FOR_BUILD:=-g -O2
endif
export HOSTAR HOSTAS HOSTCC HOSTCXX HOSTLD


ifeq ($(strip $(BR2_HAVE_DOT_CONFIG)),y)

# cc-option
# Usage: cflags-y += $(call cc-option, -march=winchip-c6, -march=i586)
# sets -march=winchip-c6 if supported else falls back to -march=i586
# without checking the latter.
cc-option = $(shell if $(TARGET_CC) $(TARGET_CFLAGS) $(1) -S -o /dev/null -xc /dev/null \
	> /dev/null 2>&1; then echo "$(1)"; else echo "$(2)"; fi ;)

#############################################################
#
# Hide troublesome environment variables from sub processes
#
#############################################################
unexport CROSS_COMPILE
unexport ARCH

#############################################################
#
# Setup the proper filename extensions for the host
#
##############################################################
ifneq ($(findstring linux,$(BR2_GNU_BUILD_SUFFIX)),)
HOST_EXEEXT:=
HOST_LIBEXT:=.a
HOST_SHREXT:=.so
endif
ifneq ($(findstring apple,$(BR2_GNU_BUILD_SUFFIX)),)
HOST_EXEEXT:=
HOST_LIBEXT:=.a
HOST_SHREXT:=.dylib
endif
ifneq ($(findstring cygwin,$(BR2_GNU_BUILD_SUFFIX)),)
HOST_EXEEXT:=.exe
HOST_LIBEXT:=.lib
HOST_SHREXT:=.dll
endif
ifneq ($(findstring mingw,$(BR2_GNU_BUILD_SUFFIX)),)
HOST_EXEEXT:=.exe
HOST_LIBEXT:=.lib
HOST_SHREXT:=.dll
endif

# The preferred type of libs we build for the target
ifeq ($(BR2_PREFER_STATIC_LIB),y)
LIBTGTEXT=.a
#PREFERRED_LIB_FLAGS:=--disable-shared --enable-static
else
LIBTGTEXT=.so
#PREFERRED_LIB_FLAGS:=--disable-static --enable-shared
endif
PREFERRED_LIB_FLAGS:=--enable-static --enable-shared

##############################################################
#
# The list of stuff to build for the target toolchain
# along with the packages to build for the target.
#
##############################################################
ifeq ($(BR2_TOOLCHAIN_BUILDROOT),y)
BASE_TARGETS:=uclibc-configured binutils gcc uclibc-target-utils
else
BASE_TARGETS:=uclibc
endif
TARGETS:=

# setup uor pathes
include project/Makefile.in

BR2_DEPENDS_DIR=$(PROJECT_BUILD_DIR)/buildroot-config

include toolchain/Makefile.in
include package/Makefile.in

#############################################################
#
# You should probably leave this stuff alone unless you know
# what you are doing.
#
#############################################################

all: world

# In this section, we need .config
include .config.cmd

include project/*.mk

# We also need the various per-package makefiles, which also add
# each selected package to TARGETS if that package was selected
# in the .config file.
ifeq ($(BR2_TOOLCHAIN_BUILDROOT),y)
# avoid pulling in external toolchain which is broken for toplvl parallel builds
include $(filter-out $(wildcard toolchain/external-toolchain/*),$(wildcard toolchain/*/*.mk))
else
include toolchain/*/*.mk
endif

ifeq ($(BR2_PACKAGE_LINUX),y)
TARGETS+=linux26-modules
endif

include package/*/*.mk

# target stuff is last so it can override anything else
include target/Makefile.in

TARGETS+=erase-fakeroots

TARGETS_CLEAN:=$(patsubst %,%-clean,$(TARGETS))
TARGETS_SOURCE:=$(patsubst %,%-source,$(TARGETS))
TARGETS_DIRCLEAN:=$(patsubst %,%-dirclean,$(TARGETS))

# all targets depend on the crosscompiler and it's prerequisites
$(TARGETS): $(BASE_TARGETS)

$(BR2_DEPENDS_DIR): .config
	rm -rf $@
	cp -dpRf $(CONFIG)/buildroot-config $@

dirs: $(DL_DIR) $(TOOL_BUILD_DIR) $(BUILD_DIR) $(STAGING_DIR) $(TARGET_DIR) \
	$(BR2_DEPENDS_DIR) \
	$(BINARIES_DIR) $(PROJECT_BUILD_DIR)

$(BASE_TARGETS): dirs

world: dependencies dirs target-host-info $(BASE_TARGETS) $(TARGETS)


.PHONY: all world dirs clean dirclean distclean source \
	$(BASE_TARGETS) $(TARGETS) \
	$(TARGETS_CLEAN) $(TARGETS_DIRCLEAN) $(TARGETS_SOURCE) \
	$(DL_DIR) $(TOOL_BUILD_DIR) $(BUILD_DIR) $(STAGING_DIR) $(TARGET_DIR) \
	$(BR2_DEPENDS_DIR) \
	$(BINARIES_DIR) $(PROJECT_BUILD_DIR)

#############################################################
#
# staging and target directories do NOT list these as
# dependencies anywhere else
#
#############################################################
$(DL_DIR) $(TOOL_BUILD_DIR) $(BUILD_DIR) \
	$(PROJECT_BUILD_DIR) $(BINARIES_DIR):
	@mkdir -p $@

$(STAGING_DIR):
	@mkdir -p $(STAGING_DIR)/bin
	@mkdir -p $(STAGING_DIR)/lib
ifeq ($(BR2_TOOLCHAIN_SYSROOT),y)
	@mkdir -p $(STAGING_DIR)/usr/lib
else
	@ln -snf . $(STAGING_DIR)/usr
	@mkdir -p $(STAGING_DIR)/usr/$(REAL_GNU_TARGET_NAME)
	@ln -snf ../lib $(STAGING_DIR)/usr/lib
	@ln -snf ../lib $(STAGING_DIR)/usr/$(REAL_GNU_TARGET_NAME)/lib
endif
	@mkdir -p $(STAGING_DIR)/usr/include

$(PROJECT_BUILD_DIR)/.root:
	mkdir -p $(TARGET_DIR)
	if ! [ -d "$(TARGET_DIR)/bin" ]; then \
		if [ -d "$(TARGET_SKELETON)" ]; then \
			cp -fa $(TARGET_SKELETON)/* $(TARGET_DIR)/ ; \
		fi; \
		touch $(STAGING_DIR)/.fakeroot.00000 ; \
	fi
	-find $(TARGET_DIR) -type d -name CVS | xargs rm -rf
	-find $(TARGET_DIR) -type d -name .svn | xargs rm -rf
	touch $@

$(TARGET_DIR): $(PROJECT_BUILD_DIR)/.root

erase-fakeroots:
	rm -f $(PROJECT_BUILD_DIR)/.fakeroot*

source: $(TARGETS_SOURCE) $(HOST_SOURCE)

_source-check:
	$(MAKE) SPIDER=--spider source

#############################################################
#
# Cleanup and misc junk
#
#############################################################
clean: $(TARGETS_CLEAN)
	rm -rf $(STAGING_DIR) $(TARGET_DIR) $(IMAGE)

dirclean: $(TARGETS_DIRCLEAN)
	rm -rf $(STAGING_DIR) $(TARGET_DIR) $(IMAGE)

distclean:
ifeq ($(DL_DIR),$(BASE_DIR)/dl)
	rm -rf $(DL_DIR)
endif
	rm -rf $(BUILD_DIR) $(PROJECT_BUILD_DIR) $(BINARIES_DIR) \
	$(LINUX_KERNEL) $(IMAGE) $(BASE_DIR)/include \
		.config.cmd
	$(MAKE) -C $(CONFIG) clean

sourceball:
	rm -rf $(BUILD_DIR) $(PROJECT_BUILD_DIR) $(BINARIES_DIR)
	set -e; \
	cd ..; \
	rm -f buildroot.tar.bz2; \
	tar -cvf buildroot.tar buildroot; \
	bzip2 -9 buildroot.tar; \


else # ifeq ($(strip $(BR2_HAVE_DOT_CONFIG)),y)

all: menuconfig

# configuration
# ---------------------------------------------------------------------------

HOSTCFLAGS=$(CFLAGS_FOR_BUILD)
export HOSTCFLAGS

$(CONFIG)/conf:
	@mkdir -p $(CONFIG)/buildroot-config
	$(MAKE) CC="$(HOSTCC)" -C $(CONFIG) conf
	-@if [ ! -f .config ] ; then \
		cp $(CONFIG_DEFCONFIG) .config; \
	fi
$(CONFIG)/mconf:
	@mkdir -p $(CONFIG)/buildroot-config
	$(MAKE) CC="$(HOSTCC)" -C $(CONFIG) conf mconf
	-@if [ ! -f .config ] ; then \
		cp $(CONFIG_DEFCONFIG) .config; \
	fi

menuconfig: $(CONFIG)/mconf
	@mkdir -p $(CONFIG)/buildroot-config
	@if ! KCONFIG_AUTOCONFIG=$(CONFIG)/buildroot-config/auto.conf \
		KCONFIG_AUTOHEADER=$(CONFIG)/buildroot-config/autoconf.h \
		$(CONFIG)/mconf $(CONFIG_CONFIG_IN); then \
		test -f .config.cmd || rm -f .config; \
	fi

config: $(CONFIG)/conf
	@mkdir -p $(CONFIG)/buildroot-config
	@KCONFIG_AUTOCONFIG=$(CONFIG)/buildroot-config/auto.conf \
		KCONFIG_AUTOHEADER=$(CONFIG)/buildroot-config/autoconf.h \
		$(CONFIG)/conf $(CONFIG_CONFIG_IN)

oldconfig: $(CONFIG)/conf
	@mkdir -p $(CONFIG)/buildroot-config
	@KCONFIG_AUTOCONFIG=$(CONFIG)/buildroot-config/auto.conf \
		KCONFIG_AUTOHEADER=$(CONFIG)/buildroot-config/autoconf.h \
		$(CONFIG)/conf -o $(CONFIG_CONFIG_IN)

randconfig: $(CONFIG)/conf
	@mkdir -p $(CONFIG)/buildroot-config
	@KCONFIG_AUTOCONFIG=$(CONFIG)/buildroot-config/auto.conf \
		KCONFIG_AUTOHEADER=$(CONFIG)/buildroot-config/autoconf.h \
		$(CONFIG)/conf -r $(CONFIG_CONFIG_IN)

allyesconfig: $(CONFIG)/conf
	cat $(CONFIG_DEFCONFIG) > .config
	@mkdir -p $(CONFIG)/buildroot-config
	@KCONFIG_AUTOCONFIG=$(CONFIG)/buildroot-config/auto.conf \
		KCONFIG_AUTOHEADER=$(CONFIG)/buildroot-config/autoconf.h \
		$(CONFIG)/conf -y $(CONFIG_CONFIG_IN)
	#sed -i -e "s/^CONFIG_DEBUG.*/# CONFIG_DEBUG is not set/" .config

allnoconfig: $(CONFIG)/conf
	@mkdir -p $(CONFIG)/buildroot-config
	@KCONFIG_AUTOCONFIG=$(CONFIG)/buildroot-config/auto.conf \
		KCONFIG_AUTOHEADER=$(CONFIG)/buildroot-config/autoconf.h \
		$(CONFIG)/conf -n $(CONFIG_CONFIG_IN)

defconfig: $(CONFIG)/conf
	@mkdir -p $(CONFIG)/buildroot-config
	@KCONFIG_AUTOCONFIG=$(CONFIG)/buildroot-config/auto.conf \
		KCONFIG_AUTOHEADER=$(CONFIG)/buildroot-config/autoconf.h \
		$(CONFIG)/conf -d $(CONFIG_CONFIG_IN)

# check if download URLs are outdated
source-check: allyesconfig
	$(MAKE) _source-check

#############################################################
#
# Cleanup and misc junk
#
#############################################################
clean:
	rm -f .config .config.old .config.cmd .tmpconfig.h
	- $(MAKE) -C $(CONFIG) clean

distclean: clean
	rm -rf sources/*

endif # ifeq ($(strip $(BR2_HAVE_DOT_CONFIG)),y)

%_defconfig: $(CONFIG)/conf
	cp $(shell find ./target/ -name $@) .config
	@$(CONFIG)/conf -o $(CONFIG_CONFIG_IN)

help:
	@echo 'Cleaning:'
	@echo '  clean                  - delete temporary files created by build'
	@echo '  distclean              - delete all non-source files (including .config)'
	@echo
	@echo 'Build:'
	@echo '  all                    - make world'
	@echo
	@echo 'Configuration:'
	@echo '  menuconfig             - interactive curses-based configurator'
	@echo '  oldconfig              - resolve any unresolved symbols in .config'
	@echo
	@echo 'Miscellaneous:'
	@echo '  source                 - download all sources needed for offline-build'
	@echo '  source-check           - check all packages for valid download URLs'
	@echo
	@echo 'See docs/REAME and docs/buildroot.html for further details'
	@echo

.PHONY: dummy subdirs release distclean clean config oldconfig \
	menuconfig tags check test depend defconfig help