#!/bin/bash

set -e

. /etc/pkg/pkg.conf
. /var/lib/pkg/functions

name=glibc
version=2.28
url=http://ftp.gnu.org/gnu/glibc/glibc-$version.tar.xz

fetch $url
fetch http://www.linuxfromscratch.org/patches/lfs/8.3/glibc-$version-fhs-1.patch
fetch https://www.iana.org/time-zones/repository/releases/tzdata2018e.tar.gz

rm -fr $WORK_DIR/$name-$version
tar -xvf $SOURCE_DIR/$name-$version.tar.xz -C $WORK_DIR

cd $WORK_DIR/$name-$version
{ time \
   {
	patch -Np1 -i $SOURCE_DIR/glibc-$version-fhs-1.patch
	
	ln -sfv /tools/lib/gcc /usr/lib
	
	case $(uname -m) in
		i?86)    GCC_INCDIR=/usr/lib/gcc/$(uname -m)-pc-linux-gnu/8.2.0/include
				ln -sfv ld-linux.so.2 /lib/ld-lsb.so.3
		;;
		x86_64) GCC_INCDIR=/usr/lib/gcc/x86_64-pc-linux-gnu/8.2.0/include
				ln -sfv ../lib/ld-linux-x86-64.so.2 /lib64
				ln -sfv ../lib/ld-linux-x86-64.so.2 /lib64/ld-lsb-x86-64.so.3
		;;
	esac
	
	rm -f /usr/include/limits.h
	
	mkdir -v build
	cd       build
	
	CC="gcc -isystem $GCC_INCDIR -isystem /usr/include" \
	../configure --prefix=/usr                          \
				 --disable-werror                       \
				 --enable-kernel=3.2                    \
				 --enable-stack-protector=strong        \
				 libc_cv_slibdir=/lib
	unset GCC_INCDIR
	make
	touch /etc/ld.so.conf
	sed '/test-installation/s@$(PERL)@echo not running@' -i ../Makefile
	make install
	cp -v ../nscd/nscd.conf /etc/nscd.conf
	mkdir -pv /var/cache/nscd
	mkdir -pv /usr/lib/locale
	make localedata/install-locales
	
	cat > /etc/nsswitch.conf << "EOF"
# Begin /etc/nsswitch.conf

passwd: files
group: files
shadow: files

hosts: files dns
networks: files

protocols: files
services: files
ethers: files
rpc: files

# End /etc/nsswitch.conf
EOF

	tar -xf $SOURCE_DIR/tzdata2018e.tar.gz

ZONEINFO=/usr/share/zoneinfo
mkdir -pv $ZONEINFO/{posix,right}

for tz in etcetera southamerica northamerica europe africa antarctica  \
          asia australasia backward pacificnew systemv; do
    zic -L /dev/null   -d $ZONEINFO       -y "sh yearistype.sh" ${tz}
    zic -L /dev/null   -d $ZONEINFO/posix -y "sh yearistype.sh" ${tz}
    zic -L leapseconds -d $ZONEINFO/right -y "sh yearistype.sh" ${tz}
done

cp -v zone.tab zone1970.tab iso3166.tab $ZONEINFO
zic -d $ZONEINFO -p America/New_York
unset ZONEINFO

	ln -svf /usr/share/zoneinfo/UTC /etc/localtime
	
	cat > /etc/ld.so.conf << "EOF"
# Begin /etc/ld.so.conf
/usr/local/lib
/opt/lib

EOF

cat >> /etc/ld.so.conf << "EOF"
# Add an include directory
include /etc/ld.so.conf.d/*.conf

EOF
mkdir -pv /etc/ld.so.conf.d

if [ ! -f /tools/bin/ld-old ]; then
	mv -v /tools/bin/{ld,ld-old}
	mv -v /tools/$(uname -m)-pc-linux-gnu/bin/{ld,ld-old}
	mv -v /tools/bin/{ld-new,ld}
	ln -sv /tools/bin/ld /tools/$(uname -m)-pc-linux-gnu/bin/ld

	gcc -dumpspecs | sed -e 's@/tools@@g'                   \
		-e '/\*startfile_prefix_spec:/{n;s@.*@/usr/lib/ @}' \
		-e '/\*cpp:/{n;s@$@ -isystem /usr/include@}' >      \
		`dirname $(gcc --print-libgcc-file-name)`/specs

	echo 'int main(){}' > dummy.c
	cc dummy.c -v -Wl,--verbose &> dummy.log
	readelf -l a.out | grep ': /lib'

	grep -o '/usr/lib.*/crt[1in].*succeeded' dummy.log
	grep -B1 '^ /usr/include' dummy.log
	grep 'SEARCH.*/usr/lib' dummy.log |sed 's|; |\n|g'
	grep "/lib.*/libc.so.6 " dummy.log
	grep found dummy.log
	rm -v dummy.c a.out dummy.log
fi

   }
} 2>&1 | tee -a $LOG_DIR/$(basename $0).log

if [ $PIPESTATUS -ne 0 ]; then exit 1; fi;

rm -fr $WORK_DIR/$name-$version

registerpkg $(basename $0) $version

exit 0