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# link-order2.at -- test link order of deplibs -*- 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/>.
####
# link-order2.test: make sure that depdepls are added right after
# the libs that pull them in: necessary at least for static linking
# and on systems where libraries do not link against other libraries.
#
# We test by overriding one symbol from a depdepl library.
# Test both a libtool library and a non-libtool library (simulated
# by removing the .la file, and setting $shlibpath_var so it is
# found at runtime). In order to ensure that the depdepl is
# actually loaded in each case, we also use an unrelated symbol
# from it directly in the main program. We test for failure by
# reversing the link order.
# We test both static and shared: it should work in both cases.
# But for the static case to work, the two symbols in the depdepl
# need to be in separate object files, otherwise duplicate symbol
# definitions can happen.
# The shared case fails on AIX without runtimelinking and on Darwin.
# On Darwin, using shared libs this only works without -no-undefined
# and only with MACOS_DEPLOYMENT_TARGET 10.2 and earlier
# (in that case $allow_undefined_flag contains -flat_namespace).
AT_SETUP([Link order of deplibs])
AT_KEYWORDS([libtool])
AT_KEYWORDS([interactive])dnl running 'wrong' may cause a popup window.
AT_CHECK([exit 77])
eval `$LIBTOOL --config | $EGREP '^(shlibpath_var|allow_undefined_flag)='`
undefined_setting=-no-undefined
shared_fails=no
case $host_os,$LDFLAGS,$allow_undefined_flag in
aix*,*-brtl*,*) ;;
aix*) shared_fails=yes ;;
darwin*,*,*-flat_namespace*) undefined_setting= ;;
darwin*,*,*) shared_fails=yes ;;
esac
deflibdir=`pwd`/lib
defbindir=`pwd`/lib
libdir=`pwd`/inst/lib
bindir=`pwd`/inst/bin
mkdir bin lib inst inst/bin inst/lib
LDFLAGS="$LDFLAGS $undefined_setting -L$deflibdir"
cat >a0.c <<\EOF
int a (void) { return 1; }
EOF
cat >a1.c <<\EOF
int a (void) { return 0; }
EOF
cat >b.c <<\EOF
int a (void);
int b (void) { return a (); }
EOF
cat >main.c <<\EOF
#include <stdlib.h>
extern int a (void);
extern int b (void);
int main (void)
{
return !(a () + b () == 0);
}
EOF
for file in a0 a1 b; do
$LIBTOOL --mode=compile $CC $CPPFLAGS $CFLAGS -c $file.c
done
$CC $CPPFLAGS $CFLAGS -c main.c
# Build an old, installed library.
$LIBTOOL --mode=link $CC $CFLAGS $LDFLAGS $static -o liba0.la a0.lo -rpath $deflibdir
$LIBTOOL --mode=install cp liba0.la $deflibdir/liba0.la
$LIBTOOL --mode=clean rm -f liba0.la
for type_of_depdepl in libtool non-libtool; do
echo "type of depdepl: $type_of_depdepl"
if test non-libtool = "$type_of_depdepl"; then
# Simulate a non-Libtool system library.
rm $deflibdir/liba1.la
addpath=$deflibdir
if test PATH = "$shlibpath_var"; then
addpath=$defbindir
fi
sep=
eval test -n \"\$$shlibpath_var\" && sep=:
eval $shlibpath_var='$addpath$sep$'$shlibpath_var
export $shlibpath_var
fi
for static in '' -static-libtool-libs; do
case `$LIBTOOL --features` in
*disable\ static\ libraries*) test -z "$static" || continue;;
esac
test non-libtool,-static-libtool-libs = "$type_of_depdepl,$static" &&
static=-all-static
$LIBTOOL --mode=link $CC $CFLAGS $LDFLAGS $static -o liba1.la a1.lo -rpath $libdir
$LIBTOOL --mode=link $CC $CFLAGS $LDFLAGS $static -o libb.la b.lo liba1.la -rpath $libdir
AT_CHECK([$LIBTOOL --mode=link $CC $CFLAGS $LDFLAGS $static -o main$EXEEXT main.$OBJEXT libb.la -la0],
[], [ignore], [ignore])
LT_AT_EXEC_CHECK([./main])
# Now test that if we reverse the link order, the program fails.
AT_CHECK([$LIBTOOL --mode=link $CC $CFLAGS $LDFLAGS $static -o wrong$EXEEXT main.$OBJEXT -la0 libb.la],
[], [ignore], [ignore])
if test yes, != "$shared_fails,$static"; then
LT_AT_EXEC_CHECK([./wrong], [1], [], [ignore], [|| (exit 1)])
fi
$LIBTOOL --mode=install cp liba1.la $libdir/liba1.la
$LIBTOOL --mode=install cp libb.la $libdir/libb.la
$LIBTOOL --mode=install cp main$EXEEXT $bindir/main$EXEEXT
$LIBTOOL --mode=install cp wrong$EXEEXT $bindir/wrong$EXEEXT
$LIBTOOL --mode=clean rm -f liba1.la libb.la
LT_AT_EXEC_CHECK([$bindir/main])
if test yes, = "$shared_fails,$static"; then
LT_AT_EXEC_CHECK([$bindir/wrong], [1], [], [ignore], [|| (exit 1)])
fi
done
done
AT_CHECK([test no = "$shared_fails" || (exit 77)])
# Now the converse: if both the program and the library need libm, then
# it needs to be sorted last. (TODO)
AT_CLEANUP
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