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# ARM EABI Toolchain Makefile
#
# Copyright (C) 2012 by James Snyder <jbsnyder@fanplastic.org>
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.

#### HIGH LEVEL/SYSTEM CONFIG OPTIONS #####

SHELL = /bin/bash
UNAME := $(shell uname)
TARGET = arm-none-eabi
PREFIX ?= $(HOME)/arm-cs-tools
PATH := ${PREFIX}/bin:${PATH}

ifeq ($(UNAME), Linux)
PROCS ?= $(shell grep -c ^processor /proc/cpuinfo)
else ifeq ($(UNAME), Darwin)
PROCS ?= $(shell sysctl -n hw.ncpu)
else
PROCS ?= 2
endif

MATCH_CS ?= false
OPT_NEWLIB_SIZE ?= true
NEWLIB_NOFLOAT ?= false
FULL_MULTILIBS ?= false

#### PRIMARY TOOLCHAIN VERSIONS #####

CS_MAJ ?= 2013
CS_MIN ?= 05
CS_BASE ?= $(CS_MAJ).$(CS_MIN)
CS_REV ?= 23
GCC_VERSION ?= 4.7
MPC_VERSION ?= 2013.05
SOURCE_PACKAGE ?= 11441
BIN_PACKAGE ?= 11442

#### PRIMARY TOOLCHAIN URLS / FILES #####

CS_VERSION = $(CS_BASE)-$(CS_REV)

LOCAL_BASE = arm-$(CS_VERSION)-arm-none-eabi
LOCAL_SOURCE = $(LOCAL_BASE).src.tar.bz2
LOCAL_BIN = $(LOCAL_BASE)-i686-pc-linux-gnu.tar.bz2
SOURCE_URL = https://sourcery.mentor.com/GNUToolchain/package$(SOURCE_PACKAGE)/public/arm-none-eabi/$(LOCAL_SOURCE)
BIN_URL = https://sourcery.mentor.com/GNUToolchain/package$(BIN_PACKAGE)/public/arm-none-eabi/$(LOCAL_BIN)

SOURCE_MD5_CHCKSUM ?= 4c791ddbb3d4bcfee29a26eb4db5a244
BIN_MD5_CHECKSUM ?= 9d206de1c74f9454e468ddcdd72c9c53

#### BUILD LABELING / TAGGING #####
BUILD_ID ?= $(shell git describe --always)
TODAY = $(shell date "+%Y%m%d")

ifeq ($(strip $(BUILD_ID)),)
BUILD_ID = $(TODAY)
endif


ifeq ($(MATCH_CS),true)
NEWLIB_FLAGS?="-g -O2 -fno-unroll-loops"
PKG_TAG?="CS"
else
PKG_TAG?="JBS"
endif

ifeq ($(NEWLIB_NOFLOAT),true)
NEWLIB_FLOAT?="--disable-newlib-io-float"
FLOAT_TAG?="NO_FLOAT_IO"
else
NEWLIB_FLOAT?=""
FLOAT_TAG?="FLOAT_IO"
endif

ifeq ($(FULL_MULTILIBS),true)
MULTILIB_FLAGS?="--enable-extra-sgxx-multilibs"
MULTILIB_TAG?="SGXX_ML"
else
MULTILIB_FLAGS?="--enable-extra-sgxxlite-multilibs"
MULTILIB_TAG?="SGXXLITE_ML"
endif

BUG_URL ?= https://github.com/jsnyder/arm-eabi-toolchain
PKG_VERSION ?= "32-bit ARM EABI Toolchain $(PKG_TAG)-$(FLOAT_TAG)-$(MULTILIB_TAG)-$(CS_BASE)-$(CS_REV)-$(BUILD_ID)"

STATICLIBS := $(CURDIR)/$(BUILD_PATH)/libs/

############## BUILD VARS ###############

BUILD_PATH = build
CONFIG_STATUS = config.status
MOD_CONFIG = $(BUILD_PATH)/$(1)/$(CONFIG_STATUS)

############### BUILD RULES ###############

.SECONDARY:

.PRECIOUS: $(LOCAL_BASE)/%-$(CS_VERSION).tar.bz2

default: install-cross

.PHONY: install-tools
install-tools: cross-binutils cross-gcc cross-gdb

.PHONY: install-cross
install-cross: install-tools install-note

.PHONY: install-deps
install-deps: gmp mpfr mpc

sudomode:
ifneq ($(USER),root)
@echo Please run this target with sudo!
@echo e.g.: sudo make targetname
@exit 1
endif

.PHONY: install-note
install-note: install-tools
@echo
@echo ====== INSTALLATION NOTE ======
@echo Your tools have now been installed at the following prefix:
@echo $(PREFIX)
@echo
@echo Please be sure to add something similar to the following to your .bash_profile, .zshrc, etc:
@echo export PATH=$(PREFIX)/bin:'$$PATH'
@echo

$(LOCAL_SOURCE):
ifeq ($(USER),root)
sudo -u $(SUDO_USER) curl -LO $(SOURCE_URL)
else
curl -LO $(SOURCE_URL)
endif

$(LOCAL_BIN):
ifeq ($(USER),root)
sudo -u $(SUDO_USER) curl -LO $(BIN_URL)
else
curl -LO $(BIN_URL)
endif

$(LOCAL_BIN).md5sum : $(LOCAL_BIN)
@openssl md5 $< | cut -f 2 -d " " - > $@
@([ "$$(<$@)" = "$(BIN_MD5_CHECKSUM)" ] || \
( echo "Bad Checksum! Please remove the following file and retry: $(LOCAL_BIN)" && false ))

$(LOCAL_SOURCE).md5sum : $(LOCAL_SOURCE)
@openssl md5 $< | cut -f 2 -d " " - > $@
@([ "$$(<$@)" = "$(SOURCE_MD5_CHCKSUM)" ] || \
( echo "Bad Checksum! Please remove the following file and retry: $(LOCAL_SOURCE)" && false ))

$(LOCAL_BASE)/%-$(CS_VERSION).tar.bz2 : $(LOCAL_SOURCE).md5sum
ifeq ($(USER),root)
@(tgt=`tar -jtf $(LOCAL_SOURCE) | grep $*` && \
sudo -u $(SUDO_USER) tar -jxvf $(LOCAL_SOURCE) $$tgt && \
sudo -u $(SUDO_USER) touch $$tgt)
else
@(tgt=`tar -jtf $(LOCAL_SOURCE) | grep $*` && \
tar -jxvf $(LOCAL_SOURCE) $$tgt && \
touch $$tgt)
endif

arm-$(CS_BASE): $(LOCAL_BIN).md5sum
ifeq ($(USER),root)
sudo -u $(SUDO_USER) tar -jtf $(LOCAL_BIN) | grep -e '.*cs3.*[ah]$$' -e '.*\.ld' \
-e '.*.\.inc' | xargs tar -jxvf $(LOCAL_BIN)
else
tar -jtf $(LOCAL_BIN) | grep -e '.*cs3.*[ah]$$' -e '.*\.ld' \
-e '.*.\.inc' | xargs tar -jxvf $(LOCAL_BIN)
endif

install-bin-extras: arm-$(CS_BASE)
ifeq ($(USER),root)
pushd arm-$(CS_BASE) ; \
sudo -u $(SUDO_USER) cp -r arm-none-eabi $(PREFIX) ; \
popd ;
else
pushd arm-$(CS_BASE) ; \
cp -r arm-none-eabi $(PREFIX) ; \
popd ;
endif

multilibbash: gcc-$(GCC_VERSION)-$(CS_BASE)
pushd gcc-$(GCC_VERSION)-$(CS_BASE) ; \
patch -N -p0 < ../patches/gcc-multilib-bash.patch ; \
popd ;

gcc-$(GCC_VERSION)-$(CS_BASE) : $(LOCAL_BASE)/gcc-$(CS_VERSION).tar.bz2
ifeq ($(USER),root)
sudo -u $(SUDO_USER) tar -jxf $<
else
tar -jxf $<
endif
touch $@

mpc-$(MPC_VERSION) : $(LOCAL_BASE)/mpc-$(CS_VERSION).tar.bz2
ifeq ($(USER),root)
sudo -u $(SUDO_USER) tar -jxf $<
else
tar -jxf $<
endif
touch $@


%-$(CS_BASE) : $(LOCAL_BASE)/%-$(CS_VERSION).tar.bz2
ifeq ($(USER),root)
sudo -u $(SUDO_USER) tar -jxf $<
else
tar -jxf $<
endif
touch $@

$(call MOD_CONFIG,gmp) : gmp-$(CS_BASE)
mkdir -p $(BUILD_PATH)/gmp && cd $(BUILD_PATH)/gmp ; \
../../gmp-$(CS_BASE)/configure --disable-shared --prefix=$(STATICLIBS)

gmp: $(call MOD_CONFIG,gmp)
cd $(BUILD_PATH)/$@ ; \
$(MAKE) -j$(PROCS) all && \
$(MAKE) install

$(call MOD_CONFIG,mpfr) : gmp mpfr-$(CS_BASE)
mkdir -p $(BUILD_PATH)/mpfr && cd $(BUILD_PATH)/mpfr && \
../../mpfr-$(CS_BASE)/configure --disable-shared --enable-static --prefix=$(STATICLIBS) --with-gmp=$(STATICLIBS)

mpfr: $(call MOD_CONFIG,mpfr)
cd $(BUILD_PATH)/$@ ; \
$(MAKE) -j$(PROCS) all && \
$(MAKE) install

$(call MOD_CONFIG,mpc) : mpc-$(MPC_VERSION)
mkdir -p $(BUILD_PATH)/mpc && cd $(BUILD_PATH)/mpc ; \
../../mpc-$(CS_BASE)/configure --disable-shared --enable-static --prefix=$(STATICLIBS) --with-mpfr=$(STATICLIBS) --with-gmp=$(STATICLIBS)

mpc: $(call MOD_CONFIG,mpc)
cd $(BUILD_PATH)/$@ ; \
$(MAKE) -j$(PROCS) all && \
$(MAKE) install

$(call MOD_CONFIG,binutils) : binutils-$(CS_BASE)
mkdir -p $(BUILD_PATH)/binutils && cd $(BUILD_PATH)/binutils && \
../../binutils-$(CS_BASE)/configure --prefix=$(PREFIX) \
--target=$(TARGET) --with-pkgversion=$(PKG_VERSION) \
--with-sysroot="$(PREFIX)/$(TARGET)" --with-bugurl=$(BUG_URL) \
--disable-nls --disable-werror

cross-binutils: $(call MOD_CONFIG,binutils)
cd $(BUILD_PATH)/binutils ; \
touch makeinfo && chmod +x makeinfo && export PATH=$$(pwd):$$PATH && \
$(MAKE) -j$(PROCS) && \
$(MAKE) installdirs install-host install-target

CS_SPECS='--with-specs=%{save-temps: -fverbose-asm} \
-D__CS_SOURCERYGXX_MAJ__=$(CS_MAJ) -D__CS_SOURCERYGXX_MIN__=$(CS_MIN) \
-D__CS_SOURCERYGXX_REV__=$(CS_REV) %{O2:%{!fno-remove-local-statics: \
-fremove-local-statics}} \
%{O*:%{O|O0|O1|O2|Os:;:%{!fno-remove-local-statics: \
-fremove-local-statics}}}'

$(call MOD_CONFIG,gcc-first) : gmp mpfr mpc cross-binutils gcc-$(GCC_VERSION)-$(CS_BASE) multilibbash
mkdir -p $(BUILD_PATH)/gcc-first && cd $(BUILD_PATH)/gcc-first && \
../../gcc-$(GCC_VERSION)-$(CS_BASE)/configure \
--prefix=$(PREFIX) --with-pkgversion=$(PKG_VERSION) \
--with-bugurl=$(BUG_URL) --target=$(TARGET) $(DEPENDENCIES) \
--disable-libquadmath --enable-languages="c" --with-gnu-ld \
--with-gnu-as --disable-nls --disable-libssp \
--with-newlib --without-headers --disable-shared --enable-lto \
--disable-threads --disable-libmudflap --disable-libgomp \
--disable-libstdcxx-pch --disable-libunwind-exceptions \
--disable-decimal-float --enable-poison-system-directories \
--with-sysroot="$(PREFIX)/$(TARGET)" \
--with-build-time-tools="$(PREFIX)/$(TARGET)/bin" \
--disable-libffi $(MULTILIB_FLAGS) $(CS_SPECS) \
--with-gmp=$(STATICLIBS) --with-mpfr=$(STATICLIBS) --with-mpc=$(STATICLIBS)

cross-gcc-first: $(call MOD_CONFIG,gcc-first)
cd $(BUILD_PATH)/gcc-first ; \
$(MAKE) -j$(PROCS) && \
$(MAKE) installdirs install-target && \
$(MAKE) install-gcc

$(call MOD_CONFIG,gcc-final) : gmp mpfr mpc cross-binutils cross-gcc-first cross-newlib gcc-$(GCC_VERSION)-$(CS_BASE) multilibbash
mkdir -p $(BUILD_PATH)/gcc-final && cd $(BUILD_PATH)/gcc-final && \
mkdir -p $(PREFIX)/$(TARGET)/usr/include && \
../../gcc-$(GCC_VERSION)-$(CS_BASE)/configure \
--prefix=$(PREFIX) --with-pkgversion=$(PKG_VERSION) \
--with-bugurl=$(BUG_URL) --target=$(TARGET) $(DEPENDENCIES) \
--enable-languages="c,c++" --with-gnu-ld --with-gnu-as \
--with-newlib --disable-nls --disable-libssp \
--disable-shared --enable-threads --with-headers=yes \
--disable-libmudflap --disable-libgomp --enable-lto \
--disable-libstdcxx-pch --enable-poison-system-directories \
--with-sysroot="$(PREFIX)/$(TARGET)" \
--with-build-time-tools="$(PREFIX)/$(TARGET)/bin" \
$(MULTILIB_FLAGS) $(CS_SPECS) \
--with-gmp=$(STATICLIBS) --with-mpfr=$(STATICLIBS) --with-mpc=$(STATICLIBS)

cross-gcc: $(call MOD_CONFIG,gcc-final)
cd $(BUILD_PATH)/gcc-final ; \
$(MAKE) -j$(PROCS) && \
$(MAKE) installdirs install-target && \
$(MAKE) install-gcc



ifeq ($(OPT_NEWLIB_SIZE),true)
NEWLIB_FLAGS?="-g -ffunction-sections -fdata-sections \
-DPREFER_SIZE_OVER_SPEED -D__OPTIMIZE_SIZE__ -Os -fomit-frame-pointer \
-fno-unroll-loops -D__BUFSIZ__=256 -mabi=aapcs"
else
NEWLIB_FLAGS?="-g -O2 -fno-unroll-loops"
endif

$(call MOD_CONFIG,newlib) : cross-binutils cross-gcc-first newlib-$(CS_BASE)
mkdir -p $(BUILD_PATH)/newlib && cd $(BUILD_PATH)/newlib && \
../../newlib-$(CS_BASE)/configure --prefix=$(PREFIX) \
--target=$(TARGET) --disable-newlib-supplied-syscalls \
--disable-libgloss --disable-nls \
--with-build-time-tools="$(PREFIX)/bin" \
$(NEWLIB_FLOAT) \
--enable-newlib-io-long-long --enable-newlib-register-fini


cross-newlib: $(call MOD_CONFIG,newlib)
cd $(BUILD_PATH)/newlib ; \
$(MAKE) -j$(PROCS) CFLAGS_FOR_TARGET=$(NEWLIB_FLAGS) CCASFLAGS=$(NEWLIB_FLAGS) && \
$(MAKE) install

$(call MOD_CONFIG,gdb) : gdb-$(CS_BASE)
mkdir -p $(BUILD_PATH)/gdb && cd $(BUILD_PATH)/gdb && \
../../gdb-$(CS_BASE)/configure --prefix=$(PREFIX) --target=$(TARGET) --with-pkgversion=$(PKG_VERSION) --with-bugurl=$(BUG_URL) --disable-werror

cross-gdb: $(call MOD_CONFIG,gdb)
cd $(BUILD_PATH)/gdb ; \
touch makeinfo && chmod +x makeinfo && export PATH=$$(pwd):$$PATH && \
$(MAKE) -j$(PROCS) CFLAGS="-Wno-error=return-type" && \
$(MAKE) installdirs install-host install-target

.PHONY : clean
clean:
rm -rf build *-$(CS_BASE) binutils-* gcc-* gdb-* newlib-* $(LOCAL_BASE)
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