libtool/tests/lt_dlexit.at

# lt_dlexit.at -- test libltdl functionality                  -*- Autotest -*-
#
#   Copyright (C) 2007-2008, 2010-2019, 2021-2024 Free Software
#   Foundation, Inc.
#   Written by Dave Brolley & Ralf Wildenhues, 2007
#
#   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/>.
####

# Try to keep the new interfaces of HEAD separate from those of
# branch-1-5 to facilitate testing of older releases.

AT_BANNER([Libltdl functionality.])

AT_SETUP([lt_dlexit unloading libs])
AT_KEYWORDS([libltdl])

# Test for
# http://lists.gnu.org/archive/html/bug-libtool/2007-01/msg00014.html
# http://lists.gnu.org/archive/html/bug-libtool/2008-03/msg00013.html

AT_DATA([main.c],
[[#include <ltdl.h>
#include <stdio.h>
#include <string.h>

typedef int (*pfun_T) (int);
typedef int *pvar_T;

/* lt_dlopen wrapper */
static lt_dlhandle
xdlopen (const char *filename)
{
  lt_dlhandle handle = lt_dlopen (filename);
  if (!handle) {
    fprintf (stderr, "can't open the module %s!\n", filename);
    fprintf (stderr, "error was: %s\n", lt_dlerror());
  }
  return handle;
}

/* lt_dlsym wrapper: try one function and one variable */
static int
xdlsymtest (lt_dlhandle handle, const char *func, const char *var)
{
  pfun_T pf = (pfun_T) lt_dlsym (handle, func);
  pvar_T pv = (pvar_T) lt_dlsym (handle, var);
  if (pf == NULL) {
    fprintf (stderr, "function '%s' not found\n", func);
    return 1;
  }
  if (pv == NULL) {
    fprintf (stderr, "variable '%s' not found\n", var);
    return 1;
  }
  return (*pf) (*pv);
}

int
main (void)
{
  lt_dlhandle b1;

  LTDL_SET_PRELOADED_SYMBOLS();
  if (lt_dlinit() != 0) {
    fprintf (stderr, "error during initialization: %s\n", lt_dlerror());
    return 1;
  }
  if (lt_dlexit() != 0) {
    fprintf (stderr, "error during first lt_dlexit: %s\n", lt_dlerror());
    return 1;
  }
  if (lt_dlinit() != 0) {
    fprintf (stderr, "error during second initialization: %s\n", lt_dlerror());
    return 1;
  }
  if (!(b1 = xdlopen ("modb1.la"))) return 1;
  if (xdlsymtest (b1, "fb1", "vb1")) return 1;
  /* do not lt_dlclose here on purpose.  */

  if (lt_dlexit() != 0) {
    fprintf (stderr, "error during exit: %s\n", lt_dlerror());
    return 1;
  }
  return 0;
}
]])


AT_DATA([a1.c],
[[#ifdef __cplusplus
extern "C" {
#endif
int f1 (int x) { return x - 1; }
int v1 = 1;
#ifdef __cplusplus
}
#endif
]])

AT_DATA([b1.c],
[[#ifdef __cplusplus
extern "C" {
#endif
#if defined DLL_EXPORT && defined _WIN32 && defined _MSC_VER
#  define LIBA1_SCOPE extern __declspec (dllimport)
#endif
#if !defined LIBA1_SCOPE
#  define LIBA1_SCOPE extern
#endif
LIBA1_SCOPE int f1 (int);
LIBA1_SCOPE int v1;
int fb1 (int x) { return f1 (v1) + x - 3; }
int vb1 = 3;
#ifdef __cplusplus
}
#endif
]])


: ${LTDLINCL="-I$abs_top_srcdir/libltdl"}
: ${LIBLTDL="$abs_builddir/../libltdl/libltdlc.la"}

# Skip this test when called from:
#    make distcheck DISTCHECK_CONFIGURE_FLAGS=--disable-ltdl-install
AT_CHECK([case $LIBLTDL in #(
 */_inst/lib/*) test -f "$LIBLTDL" || (exit 77) ;;
esac], [], [ignore])

CPPFLAGS="$LTDLINCL $CPPFLAGS"
LDFLAGS="$LDFLAGS -no-undefined"

for file in a1 b1; do
  $LIBTOOL --mode=compile $CC $CPPFLAGS $CFLAGS -c $file.c
done
$CC $CPPFLAGS $CFLAGS -c main.c
AT_CHECK([$LIBTOOL --mode=link $CC $CFLAGS $LDFLAGS -o liba1.la a1.lo \
          -rpath /foo -avoid-version], [], [ignore], [ignore])
AT_CHECK([$LIBTOOL --mode=link $CC $CFLAGS $LDFLAGS -o modb1.la b1.lo \
          -rpath /foo -module -avoid-version liba1.la], [], [ignore], [ignore])

# TODO: test -dlpreopen
for dlopen in -dlopen; do
  AT_CHECK([$LIBTOOL --mode=link $CC $CFLAGS $LDFLAGS -o main$EXEEXT main.$OBJEXT \
           $dlopen modb1.la $LIBLTDL], [], [ignore], [ignore])
  LT_AT_NOINST_EXEC_CHECK([./main], [-dlopen modb1.la])
done

AT_CLEANUP