#!/bin/sh
#

set -e

: ${MACHINE:=mips-elf}

b_prefix="--prefix=${INSTALL}"
machine="--target ${MACHINE}"

# build dependencies
gmp="--with-gmp=${INSTALL}"
mfr="--with-mpfr=${INSTALL}"
mpc="--with-mpc=${INSTALL}"

# gcc
#

newlib="--with-newlib --without-headers"
extra="--disable-lto --disable-nls --disable-libgomp --disable-libquadmath --disable-decimal-float --disable-libitm --without-isl --disable-plugin"

sde="--with-arm=mips32r2"
sde_extra="--with-mips-plt --with-llsc --with-synci"

binutils="${mpc} ${gmp} ${mpfr} --with-gnu-as --with-gnu-ld"

hier_dirs ()
{
	cd ${BUILDDIR}
	mkdir -p "${1}"
	cd "${1}"
}

prebuild()
{
	cd "${BUILDDIR}"
	hier_dirs gmp
	${START}/${GMP}/configure ${b_prefix} -q --disable-shared
	make && make install
	hier_dirs mpfr
	${START}/${MPFR}/configure ${b_prefix} -q --disable-shared --disable-lto --disable-decimal-float
	make && make install

	hier_dirs mpc
	${START}/${MPC}/configure ${b_prefix} -q --disable-shared
	make && make install
}

binutils()
{
	hier_dirs binutils
	${START}/${BINUTILS}/configure -q ${b_prefix} ${machine} ${mpc} ${gmp} ${mpfr} \
		--disable-debug --disable-lto --disable-nls --disable-multilib \
		--disable-gdb --disable-gdb-server --disable-libdecnumber \
		--disable-readline --disable-sim --disable-gold
	make && make install
}

phase_1()
{
	hier_dirs gcc0
	${START}/${GCC}/configure -q ${b_prefix} ${machine} --enable-languages=c ${binutils} \
		${sde} ${newlib} ${sde_extra}
	make all-gcc && make install-gcc
	make all-target-libgcc && make install-target-libgcc
}

newlib()
{
	hier_dirs newlib
	${START}/${NEWLIB}/configure -q ${b_prefix} ${machine} --disable-newlib-supplied-syscalls 
	make && make install
}

phase_2()
{
	hier_dirs gcc1
	${START}/${GCC}/configure -q ${b_prefix} ${machine} --enable-languages=c ${binutils} ${sde} ${newlib} ${sde_extra}
}

test -z  "${BUILDDIR}" -o -z "${PREFIX}" -o -z "${START}" -o -z "${MACHINE}" && 2>& echo "Environment not set." && exit
test -r "./versions.env" && . "./versions.env"

prebuild
binutils
phase_1
newlib
phase_2