tests/link-order.test

#! /bin/sh
# link-order.test - make sure that library linking order matches

# Copyright (C) 2005 Free Software Foundation, Inc.
# This is free software; see the source for copying conditions.  There is NO
# warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

# This program 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; either version 2 of the License, or
# (at your option) any later version.
#
# This program 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 this program; if not, a copy can be downloaded from
# http://www.gnu.org/copyleft/gpl.html, or by writing to the Free
# Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
# MA 02110-1301, USA.

. ./defs || exit 1

retcode=0

rm -rf linkorder.dir
mkdir linkorder.dir
top_dir=`pwd`/linkorder.dir
prefix_old=$top_dir/old
prefix_new=$top_dir/new
srcdir=linkorder.dir/src
mkdir $srcdir $prefix_old $prefix_new $prefix_old/lib $prefix_new/lib

cat >$srcdir/c.c <<EOF
int c = 1;
EOF

$LIBTOOL --mode=compile $CC $CFLAGS -c $srcdir/c.c -o $srcdir/c.lo
$LIBTOOL --mode=link $CC $CFLAGS $LDFLAGS -o $srcdir/libcee.la $srcdir/c.lo \
    -rpath $prefix_old/lib
$LIBTOOL --mode=install cp $srcdir/libcee.la $prefix_old/lib/libcee.la

for i in old new; do
  rm -rf $srcdir
  mkdir $srcdir

  cat >$srcdir/a_$i.c <<EOF
extern int c;
extern int b_$i();
int a_$i() { return c + b_$i(); }
EOF

  cat >$srcdir/b_$i.c <<EOF
extern int c;
int b_$i() { return 1 + c; }
EOF

  prefix=`eval echo \\$prefix_$i`
  $LIBTOOL --mode=compile $CC $CFLAGS -c $srcdir/a_$i.c -o $srcdir/a.lo
  $LIBTOOL --mode=compile $CC $CFLAGS -c $srcdir/b_$i.c -o $srcdir/b.lo
  $LIBTOOL --mode=link $CC $CFLAGS $LDFLAGS -o $srcdir/libb.la $srcdir/b.lo \
      -L$prefix_old/lib -lcee -rpath $prefix/lib
  $LIBTOOL --mode=link $CC $CFLAGS -o $srcdir/liba.la $srcdir/a.lo \
      $srcdir/libb.la -L$prefix_old/lib -lcee -rpath $prefix/lib
  $LIBTOOL --mode=install cp $srcdir/libb.la $prefix/lib/libb.la
  $LIBTOOL --mode=install cp $srcdir/liba.la $prefix/lib/liba.la \
      >$srcdir/stdout 2>$srcdir/stderr || retcode=1
  cat $srcdir/stdout
  cat $srcdir/stderr >&2
done

# Do not error if we do not relink (e.g. static-only systems)
if $EGREP relinking $srcdir/stderr; then
  if $EGREP ' -L.*\/new\/lib -lb -L.*\/old\/lib -lcee' $srcdir/stdout; then :; else
    echo "$0: wrong link order" 1>&2
    retcode=1
  fi
fi

for i in old new; do
  cat >$srcdir/main_$i.c <<EOF
extern int a_$i();
int main(void) { return a_$i() != 3; }
EOF

  prefix=`eval echo \\$prefix_$i`
  $LIBTOOL --mode=compile $CC $CFLAGS -c $srcdir/main_$i.c -o $srcdir/main_$i.lo
  $LIBTOOL --mode=link $CC $CFLAGS $LDFLAGS -o $srcdir/main_$i $srcdir/main_$i.lo \
      -L$prefix/lib -la || retcode=1
  if $srcdir/main_$i; then :
  else
    echo "$0: cannot execute $srcdir/main_$i" 1>&2
    if test "X$host" != "X$build"; then
      echo "This may be ok since you seem to be cross-compiling." 1>&2
      retcode=77
    else
      retcode=1
    fi
  fi
done

rm -rf $top_dir
exit $retcode