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=3.0.4
LANGUAGES=c
PACKAGE=$(CWD)/vxw55-crossppc-$(GCC_VERSION)-$(BUILD_NO)-$(HOST).tar.gz


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


JOBS=-j4

all: prepare binutils xgcc pack clean

prepare:
	mkdir -p $(BUILDDIR)
	mkdir -p $(INSTDIR)
	rm -Rf $(CWD)/unpacked
	mkdir -p $(CWD)/unpacked
	cd $(CWD)/unpacked && \
		tar -zxf $(SRCDIR)/gcc-$(GCC_VERSION).tar.gz
	cd $(CWD)/unpacked/gcc-$(GCC_VERSION) && \
        		patch -p1 < $(SRCDIR)/gcc304.patch
	cd $(CWD)/unpacked/gcc-$(GCC_VERSION) && \
        		patch -p2 < $(SRCDIR)/gcc304.patch.2
	cd $(CWD)/unpacked/gcc-$(GCC_VERSION) && \
        		patch -p1 < $(SRCDIR)/gcc304.patch.3
	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
binutils:
	rm -Rf $(BUILDDIR)/binutils
	mkdir -p $(BUILDDIR)/binutils
	cd $(BUILDDIR)/binutils && \
		CFLAGS="-m32" LDFLAGS="-m32" \
		$(CWD)/unpacked/binutils-2.10.1/configure \
			--build=$(HOST) \
			--host=$(HOST) \
			--prefix=$(INSTDIR) \
			--target=$(GCC_TARGET) \
			--with-headers=$(WIND_BASE)/target/h \
			--with-libs=$(WIND_BASE)/target/lib 
	cd $(BUILDDIR)/binutils && \
		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) && \
		CC="gcc -m32" CXX="g++ -m32" HOST_CXXFLAGS="-m32" HOST_CFLAGS="-m32" HOST_LD_FLAGS="-m32" \
		$(CWD)/unpacked/gcc-$(GCC_VERSION)/configure \
			--build=$(HOST) \
			--host=$(HOST) \
			--prefix=$(INSTDIR) \
			--target=$(GCC_TARGET) \
			--with-headers=$(WIND_BASE)/target/h \
			--with-libs=$(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