#!/bin/bash -e

source $(dirname $0)/functions
source $(dirname $0)/pkgversion

filename=$(echo $0 | rev | cut -d / -f1 | rev)

TMP=${TMP:-/tmp/build}
LOG=${LOG:-$(dirname $0)/log}
SRC=${SRC:-$(dirname $0)/src}

NAME=gcc
VERSION=${GCC_VER}

fetch "http://www.mpfr.org/mpfr-$MPFR_VER/mpfr-$MPFR_VER.tar.xz" $SRC
fetch "https://ftp.gnu.org/gnu/mpc/mpc-$MPC_VER.tar.gz" $SRC
fetch "http://ftp.gnu.org/gnu/gmp/gmp-$GMP_VER.tar.xz" $SRC
fetch "http://ftp.gnu.org/gnu/gcc/gcc-$GCC_VER/gcc-$GCC_VER.tar.xz" $SRC

[ "$1" = "fetch" ] && exit 0

rm -fr $TMP
mkdir -p $TMP $LOG $SRC

tar xf $SRC/$tarballname -C $TMP
tar -xf $SRC/mpfr-$MPFR_VER.tar.xz -C $TMP/$NAME-$VERSION
tar -xf $SRC/gmp-$GMP_VER.tar.xz -C $TMP/$NAME-$VERSION
tar -xf $SRC/mpc-$MPC_VER.tar.gz -C $TMP/$NAME-$VERSION

{ time \
   {

	cd $TMP/$NAME-$VERSION

	mv -v mpfr-$MPFR_VER mpfr
	mv -v gmp-$GMP_VER gmp
	mv -v mpc-$MPC_VER mpc
	
	for file in gcc/config/{linux,i386/linux{,64}}.h
	do
	  cp -uv $file{,.orig}
	  sed -e 's@/lib\(64\)\?\(32\)\?/ld@/tools&@g' \
		  -e 's@/usr@/tools@g' $file.orig > $file
	  echo '
	#undef STANDARD_STARTFILE_PREFIX_1
	#undef STANDARD_STARTFILE_PREFIX_2
	#define STANDARD_STARTFILE_PREFIX_1 "/tools/lib/"
	#define STANDARD_STARTFILE_PREFIX_2 ""' >> $file
	  touch $file.orig
	done
	
	case $(uname -m) in
	  x86_64)
		sed -e '/m64=/s/lib64/lib/' \
			-i.orig gcc/config/i386/t-linux64
	 ;;
	esac
	
	mkdir -v build
	cd       build

	../configure                                       \
		--target=$LFS_TGT                              \
		--prefix=/tools                                \
		--with-glibc-version=2.11                      \
		--with-sysroot=$LFS                            \
		--with-newlib                                  \
		--without-headers                              \
		--with-local-prefix=/tools                     \
		--with-native-system-header-dir=/tools/include \
		--disable-nls                                  \
		--disable-shared                               \
		--disable-multilib                             \
		--disable-decimal-float                        \
		--disable-threads                              \
		--disable-libatomic                            \
		--disable-libgomp                              \
		--disable-libmpx                               \
		--disable-libquadmath                          \
		--disable-libssp                               \
		--disable-libvtv                               \
		--disable-libstdcxx                            \
		--enable-languages=c,c++
	make
	make install
	
	}
} 2>&1 | tee $LOG/$filename.log
    
[ $PIPESTATUS = 0 ] && echo "$NAME-$VERSION" > /tools/$filename || exit $PIPESTATUS

rm -fr $TMP