#######################################################################
#
# Makefile to build a linux hosted PPC cross compiler for
# PPC vxWorks 5.5.1 / Tornado 2.2.1
#
# Note:
#	To build the toolchain on newer linux systems,
#	we need to temporary install 'sed' and 'bison' to be
#	compatible for gcc configure and make scripts.
#
#######################################################################
CWD = $(shell readlink -f .)

ifeq ($(BUILD_NUMBER),)
BUILD_NO=0
else
BUILD_NO=$(BUILD_NUMBER)
endif

VERSION=0.4.1
SRCDIR=$(CWD)/SOURCES
BUILDDIR=$(CWD)/build
#WIND_BASE=$(HOME)/tornado/2.2.1
WIND_USR=$(WIND_BASE)/target
HOST=i686-pc-linux-gnu
GCC_TARGET=powerpc-wrs-vxworks55
MASCH=$(shell uname -m)
INSTDIR=$(CWD)/inst/crossppc
GCC_VERSION=2.95.3
GCC_TARGET_VERSION=2.95.4
LANGUAGES=c,c++
PACKAGE=$(CWD)/vxw55-crossppc-$(GCC_TARGET_VERSION)-$(BUILD_NO)-$(HOST).tar.gz

ifeq ($(WIND_BASE),)
$(error WIND_BASE not specified )
endif


JOBS=-j4

all: prepare mktools binutils xgcc uninsttools pack clean

prepare:
	mkdir -p $(BUILDDIR)
	mkdir -p $(INSTDIR)
	rm -Rf $(CWD)/unpacked
	mkdir -p $(CWD)/unpacked/sys-includes
	cp -Rvf $(WIND_BASE)/target/h/*  $(CWD)/unpacked/sys-includes
	cd $(CWD)/unpacked/sys-includes/sys && \
		patch -p0 < $(SRCDIR)/fdmatch.patch
	cd $(CWD)/unpacked && \
		tar -zxf $(SRCDIR)/gcc-2.95.3.tar.gz
	cd $(CWD)/unpacked/gcc-$(GCC_VERSION) && \
		patch -p1 <  $(SRCDIR)/gcc2.95.3-2.95.4vxw55.patch
	cd $(CWD)/unpacked && \
		tar -zxf $(SRCDIR)/sed-3.02.tar.gz
	cd $(CWD)/unpacked && \
		tar -zxf $(SRCDIR)/bison-1.28.tar.gz
	cd $(CWD)/unpacked && \
		tar -zxf $(SRCDIR)/binutils-2.10.1.tar.gz
	cd $(CWD)/unpacked/binutils-* && \
		patch -p1 < $(SRCDIR)/vx-ppc-binutils-2.10.diff
mktools:
	cd $(CWD)/unpacked/sed-* && \
		CC="gcc -m32 -std=gnu89" \
		CXX="g++ -m32" \
	./configure --prefix=$(INSTDIR) && \
	make && make install
	cd $(CWD)/unpacked/bison-* && \
		CC="gcc -m32 -std=gnu89" \
		CXX="g++ -m32" \
	./configure --prefix=$(INSTDIR) && \
	make && make install

uninsttools:
lll:
	cd $(CWD)/unpacked/sed-* && \
	    export PATH=$(PATH):/sbin && \
	    make uninstall
	cd $(CWD)/unpacked/bison-* && \
	    export PATH=$(PATH):/sbin && \
	    make uninstall

binutils:
	rm -Rf $(BUILDDIR)/binutils
	mkdir -p $(BUILDDIR)/binutils
	cd $(BUILDDIR)/binutils && \
	export PATH=$(INSTDIR)/bin:$(PATH) && \
		CC="gcc -m32 -std=gnu89" 	\
		CXX="g++ -m32" 			\
		HOST_LD_FLAGS="-m32" 		\
		$(CWD)/unpacked/binutils-2.10.1/configure \
			--build=$(HOST) 	\
			--host=$(HOST) 		\
			--prefix=$(INSTDIR) 	\
			--target=$(GCC_TARGET) 	\
			--with-headers=$(CWD)/unpacked/sys-includes \
			--with-libs=$(WIND_BASE)/target/lib 
	cd $(BUILDDIR)/binutils && \
	export PATH=$(INSTDIR)/bin:$(PATH) && \
		make $(JOBS) && \
		make install

xgcc:
	rm -Rf $(BUILDDIR)/gcc
	mkdir -p $(BUILDDIR)/gcc
	cd $(BUILDDIR)/gcc && \
		export WIND_BASE=$(WIND_BASE) && \
		export WIND_USR=$(WIND_USR) && \
		export PATH=$(INSTDIR)/bin:$(PATH) && \
		export YACC="$(INSTDIR)/bin/bison -y" && \
		bison --version && 		\
		CC="gcc -m32 -std=gnu89" 	\
		CXX="g++ -m32" 			\
		HOST_LD_FLAGS="-m32" 		\
		CFLAGS="-O2 -fno-strict-aliasing -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64" \
		$(CWD)/unpacked/gcc-$(GCC_VERSION)/configure \
			--build=$(HOST) \
			--host=$(HOST) \
			--prefix=$(INSTDIR) \
			--target=$(GCC_TARGET) \
			--with-headers=$(CWD)/unpacked/sys-includes \
			--with-libs=$(WIND_BASE)/target/lib \
			--enable-languages="$(LANGUAGES)"  \
			--disable-multilib \
			--with-gnu-as --with-gnu-ld 
	cd $(BUILDDIR)/gcc && \
		export WIND_BASE=$(WIND_BASE) && \
		export WIND_USR=$(WIND_USR) && \
		export PATH=$(INSTDIR)/bin:$(PATH) && \
		make $(JOBS) && \
		make install
	rm -Rf $(INSTDIR)/$(GCC_TARGET)/sys-include
	rm -f $(INSTDIR)/bin/powerpc-wrs-vxworks55-gccbug
	strip $(INSTDIR)/bin/$(GCC_TARGET)-*

pack:
	cd $(INSTDIR) && \
		tar -zcf $(PACKAGE) .

clean:
	rm -Rf $(BUILDDIR)
	rm -Rf $(CWD)/unpacked
	#rm -Rf $(CWD)/inst