libtool/tests/duplicate_deps.at

# duplicate_deps.at -- preserve duplicate convenience deps    -*- Autotest -*-

#   Copyright (C) 2006-2008, 2011-2019, 2021-2024 Free Software
#   Foundation, Inc.
#   Written by Ralf Wildenhues, 2006
$
#   This file is part of GNU Libtool.
#
# GNU Libtool 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.
#
# GNU Libtool 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 GNU Libtool.  If not, see <https://www.gnu.org/licenses/>.
####

AT_SETUP([preserve duplicate convenience deps])
AT_KEYWORDS([libtool])

# --preserve-dup-deps should work for convenience archives.

# Create a circular dependency of liba and libb:
# a1 pulls in b1, that pulls in a2.
cat >a1.c <<\EOF
extern int b1 ();
int a1 () { return b1 (); }
EOF
cat >a2.c <<\EOF
int a2 () { return 0; }
EOF
cat >b1.c <<\EOF
extern int a2 ();
int b1 () { return a2 (); }
EOF
cat >main.c <<\EOF
extern int a1 ();
int main () { return a1 (); }
EOF

for file in a1.c a2.c b1.c; do
  $LIBTOOL --mode=compile $CC $CPPFLAGS $CFLAGS -c $file
done
$CC $CPPFLAGS $CFLAGS -c main.c
$LIBTOOL --mode=link --tag=CC $CC $CFLAGS $LDFLAGS -o liba.la a1.lo a2.lo

# This could be worked around by adding liba.la to libb.la
# (in that case all objects from liba would be merged into
# libb.a as well, possibly renamed.)
$LIBTOOL --mode=link --tag=CC $CC $CFLAGS $LDFLAGS -o libb.la b1.lo liba.la
AT_CHECK([$LIBTOOL --mode=link --tag=CC \
	  $CC $CFLAGS $LDFLAGS -o main$EXEEXT main.$OBJEXT liba.la libb.la],
	  [0], [ignore], [ignore])
LT_AT_EXEC_CHECK([./main])

# Forgo the workaround and create a true circular dependency.
$LIBTOOL --mode=link --tag=CC $CC $CFLAGS $LDFLAGS -o libb.la b1.lo
# Some systems find all symbols anyway; skip this test on such systems.
AT_CHECK([$LIBTOOL --mode=link --tag=CC \
	  $CC $CFLAGS $LDFLAGS -o main$EXEEXT main.$OBJEXT liba.la libb.la liba.la \
	  && exit 77],
	  [1], [ignore], [ignore])
# Other systems need special treatment, so preserve-dup-deps flag is used.
AT_CHECK([$LIBTOOL --mode=link --preserve-dup-deps --tag=CC \
	  $CC $CFLAGS $LDFLAGS -o main$EXEEXT main.$OBJEXT liba.la libb.la liba.la],
	  [0], [ignore], [ignore])

AT_CLEANUP