#!/bin/bash

echo "Cross compiling GCC and dependencies"

export WORKING_DIR="$JEHANNE/hacking/cross/pkgs/gcc"

# include x86_64-jehanne-pkg-config in PATH
export PATH="$JEHANNE/hacking/cross/:$PATH"

function failOnError {
	# $1 -> exit status on a previous command
	# $2 -> task description
	if [ $1 -ne 0 ]; then
		kill $dotter
		wait $dotter 2>/dev/null

		echo "ERROR $2"
		echo
		echo BUILD LOG:
		echo
		cat cross-toolchain.build.log
		exit $1
	fi
}

date > $WORKING_DIR/gcc.build.log

(cd src && fetch) >> $WORKING_DIR/gcc.build.log
failOnError $? "fetching sources"

echo -n Building libgmp...
(
	cd libgmp &&
	patch -p0 < $WORKING_DIR/patch/libgmp.patch &&
	./configure --host=x86_64-jehanne --prefix=/pkgs/libgmp/6.1.2/ &&
	make &&
	make DESTDIR=$JEHANNE install
) >> $WORKING_DIR/gcc.build.log
failOnError $? "Building libgmp"
echo done.

# Copy to /posix (to emulate bind during cross compilation)
cp $JEHANNE/pkgs/libgmp/6.1.2/* $JEHANNE/posix

echo -n Building libmpfr...
(
	cd libmpfr
	patch -p0 < $WORKING_DIR/patch/libmpfr.patch
	./configure --host=x86_64-jehanne --prefix=/pkgs/libmpfr/4.0.1/
	make
	make DESTDIR=$JEHANNE install
) >> $WORKING_DIR/gcc.build.log
failOnError $? "Building libmpfr"
echo done.