devtools/cross/pkgs/newlib.sh

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#!/bin/bash
# This file is part of Jehanne.
#
# Copyright (C) 2017 Giacomo Tesio <giacomo@tesio.it>
#
# Jehanne is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, version 2 of the License.
#
# Jehanne is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with Jehanne. If not, see <http://www.gnu.org/licenses/>.
if [ "$JEHANNE" = "" ]; then
echo $0 requires the shell started by ./hacking/devshell.sh
exit 1
fi
# To create a Jehanne version of newlib, we need specific OUTDATED versions
# of Autotools that won't compile easily in a modern Linux distro.
export PATH=$JEHANNE/hacking/cross/tmp/bin:$PATH
export CROSS_DIR=$JEHANNE/hacking/cross
export NEWLIB=$CROSS_DIR/pkgs/newlib/
export NEWLIB_SRC=$NEWLIB/src/
export NEWLIB_BUILD=$NEWLIB/build/
export NEWLIB_PREFIX=$NEWLIB/output/
echo -n Building newlib.
(
# Inside parentheses, and therefore a subshell . . .
while [ 1 ] # Endless loop.
do
echo -n "."
sleep 3
done
) &
dotter=$!
function failOnError {
# $1 -> exit status on a previous command
# $2 -> task description
kill $dotter
wait $dotter 2>/dev/null
if [ $1 -ne 0 ]; then
echo "ERROR $2"
if [ "$TRAVIS_BUILD_DIR" != "" ]; then
echo
echo "CONFIG.LOG @ $NEWLIB_BUILD/config.log"
echo
cat $NEWLIB_BUILD/config.log
cat newlib.build.log
fi
exit $1
fi
}
if [ "$NEWLIB_OPTIMIZATION" = "" ]; then
NEWLIB_OPTIMIZATION=0
fi
export CC=gcc
# NOTE: we use -O0 because apparently vsprintf functions do not
# work with -O2.
export CFLAGS_FOR_TARGET="-g -gdwarf-2 -ggdb -O$NEWLIB_OPTIMIZATION"
(
rm -fr $NEWLIB_BUILD &&
rm -fr $NEWLIB_PREFIX &&
mkdir $NEWLIB_BUILD &&
mkdir $NEWLIB_PREFIX &&
cd $NEWLIB_BUILD &&
$NEWLIB_SRC/configure --enable-newlib-mb --disable-newlib-fvwrite-in-streamio --prefix=$NEWLIB_PREFIX --target=x86_64-jehanne &&
make all && make install &&
rm -fr $JEHANNE/sys/posix/newlib &&
rm -fr $JEHANNE/arch/amd64/lib/newlib &&
mv $NEWLIB_PREFIX/x86_64-jehanne/include/ $JEHANNE/sys/posix/newlib &&
echo "Newlib headers installed at $JEHANNE/sys/posix/newlib/" &&
mv $NEWLIB_PREFIX/x86_64-jehanne/lib/ $JEHANNE/arch/amd64/lib/newlib/ &&
echo "Newlib libraries installed at $JEHANNE/arch/amd64/lib/newlib/"
) >> newlib.build.log
failOnError $? "building newlib"
kill $dotter
wait $dotter 2>/dev/null