tests/mdemo.at

# demo.at -- Dynamic ltdl runtime loading -*- Autotest -*-
#
#   Copyright (C) 1998, 2002-2004, 2011-2019, 2021-2025 Free Software
#   Foundation, Inc.
#   Written by Thomas Tanner, 1998
#   Written by Greg Eisenhauer, 2002
#   Rewritten by Gary V. Vaughan, 2003
#
#   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_BANNER([Dynamic ltdl runtime loading.])

# _LT_SETUP
# ---------
m4_define([_LT_SETUP],
[dnl We can't use AT_DATA here, because we need an unquoted here-
dnl document to splice in the path to the top level libltdl directory,
dnl but, we do need to double m4-quote to prevent premature expansion
dnl of any active m4 symbols in the here-doc content, and to maintain
dnl the square-bracket symbols as is.
[cat >configure.ac <<_EOT_
AC_INIT([mdemo], ]AT_PACKAGE_VERSION[, ]AT_PACKAGE_BUGREPORT[)
AC_CONFIG_AUX_DIR([build-aux])
AC_CONFIG_MACRO_DIRS([m4])
LT_CONFIG_LTDL_DIR([libltdl])
AM_INIT_AUTOMAKE
AC_PROG_CC
LT_INIT([dlopen win32-dll])
LTDL_INIT([nonrecursive convenience])
AC_SUBST([LIBTOOL_DEPS])
AC_SUBST([INCLTDL])
AC_SUBST([LIBLTDL])
STATIC=
test yes = "$enable_static" && STATIC=-static
AC_SUBST([STATIC])
LT_LIB_M
AC_CONFIG_FILES([Makefile])
AC_CONFIG_HEADERS([config.h:config.in.h])
AC_OUTPUT
_EOT_]


[cat >Makefile.am <<_EOT_
AUTOMAKE_OPTIONS = no-dependencies subdir-objects foreign
ACLOCAL_AMFLAGS = -I m4
AM_CPPFLAGS = \$(INCLTDL)
AM_LDFLAGS =

noinst_LTLIBRARIES =
EXTRA_LTLIBRARIES =

include_HEADERS =

EXTRA_DIST =

BUILT_SOURCES =
CLEANFILES =
MOSTLYCLEANFILES =

lib_LTLIBRARIES = libsub.la foo1.la libfoo2.la libmlib.la

foo1_la_SOURCES = foo1.c
foo1_la_LIBADD = \$(LIBM) libsub.la
foo1_la_LDFLAGS = -no-undefined -module -avoid-version

libfoo2_la_SOURCES = foo2.c
libfoo2_la_LIBADD = \$(LIBM) libsub.la
libfoo2_la_LDFLAGS = -no-undefined -module -export-symbols-regex "libfoo2.*"

libsub_la_SOURCES = sub.c
libsub_la_LDFLAGS = -no-undefined

## Use -export-symbols-regex here explicitly because libltdl marks
## its exported symbols, and we use libltdl as a convenience archive.
## Thus, on w32, auto-exporting is turned off.
libmlib_la_SOURCES = mlib.c
libmlib_la_LIBADD = \$(LIBLTDL) "-dlopen" foo1.la "-dlopen" libfoo2.la
libmlib_la_LDFLAGS = -no-undefined -export-symbols-regex ".*"
libmlib_la_DEPENDENCIES = \$(LIBLTDL) libsub.la foo1.la libfoo2.la

noinst_HEADERS = foo.h

bin_PROGRAMS = mdemo mdemo_static

# Create a version of mdemo that does dlopen.
mdemo_SOURCES = main.c
mdemo_LDFLAGS = -export-dynamic
## The quotes around -dlopen below fool automake into accepting it
mdemo_LDADD = \$(LIBLTDL) libsub.la "-dlopen" self \
		"-dlopen" foo1.la "-dlopen" libfoo2.la
mdemo_DEPENDENCIES = \$(LIBLTDL) libsub.la foo1.la libfoo2.la

# Create a statically linked version of mdemo.
mdemo_static_SOURCES = \$(mdemo_SOURCES)
mdemo_static_LDFLAGS = \$(STATIC) \$(mdemo_LDFLAGS)
mdemo_static_LDADD = \$(mdemo_LDADD)
mdemo_static_DEPENDENCIES = \$(mdemo_DEPENDENCIES)

libtool: \$(LIBTOOL_DEPS)
	\$(SHELL) ./config.status --recheck

include \$(srcdir)/libltdl/ltdl.mk
include \$(srcdir)/mdemo.mk
_EOT_]

AT_DATA([mdemo.mk],
[[# Don't abort for lack of mdemo.mk
]])

AT_DATA([foo.h],
[[#ifndef FOO_H
#define FOO_H

/* Silly constants that the functions return. */
#define HELLO_RET 0xe110
#define FOO_RET 0xf00

int sub (void);

#endif
]])

AT_DATA([foo1.c],
[[#include <config.h>
#include <stdio.h>
#include <math.h>

#include "foo.h"

#define nothing foo1_LTX_nothing
#define foo1    foo1_LTX_foo1
#define hello   foo1_LTX_hello

/* Give a global variable definition. */
int nothing = FOO_RET;

/* private function */
int _foo1_helper (void) {
  sub ();
  return FOO_RET;
}

/* export functions */
#ifdef __cplusplus
extern "C" {
#endif

int foo1 (void) {
    printf ("cos (0.0) = %g\n", (double) cos ((double) 0.0));
    return _foo1_helper ();
}

int hello () {
    printf ("** This is foolib 1 **\n");
    return HELLO_RET;
}

#ifdef __cplusplus
}
#endif
]])

AT_DATA([foo2.c],
[[#include <config.h>
#include <stdio.h>
#include <math.h>

#include "foo.h"

#define nothing libfoo2_LTX_nothing
#define foo2    libfoo2_LTX_foo2
#define hello   libfoo2_LTX_hello

/* Give a global variable definition. */
int nothing;

/* private function */
int _foo2_helper (void) {
  sub ();
  return FOO_RET;
}

/* export functions */
#ifdef __cplusplus
extern "C" {
#endif

int foo2 (void) {
    printf ("sin (0.0) = %g\n", (double) sin ((double) 0.0));
    return _foo2_helper ();
}

int hello () {
    printf ("** This is foolib 2 **\n");
    return HELLO_RET;
}

#ifdef __cplusplus
}
#endif
]])

AT_DATA([mlib.c],
[[#include <config.h>
#include <stdio.h>

#include "foo.h"
#include "ltdl.h"

int test_dl (char *filename) {
  lt_dlhandle handle;
  const lt_dlinfo *info;
  int (*pfoo1)() = 0;
  int (*pfoo2)() = 0;
  int (*phello)() = 0;
  int *pnothing = 0;
  int ret = 0;

  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 1;
  }

  info = lt_dlgetinfo(handle);
  if (!info) {
    fprintf (stderr, "can't get module info: %s\n", lt_dlerror());
    return 1;
  }
  if (info->name) {
    printf ("module name: %s\n", info->name);
  } else {
    printf ("module is not a libtool module\n");
  }
  printf ("module filename: %s\n", info->filename);
  printf ("module reference count: %i\n", info->ref_count);

  phello = (int(*)())lt_dlsym(handle, "hello");
  if (phello)
    {
      int value = (*phello) ();

      printf ("hello returned: %i\n", value);
      if (value == HELLO_RET)
        printf("hello is ok!\n");
    }
  else
    {
      fprintf (stderr, "did not find the 'hello' function\n");
      fprintf (stderr, "error was: %s\n", lt_dlerror());
      ret = 1;
    }

  pnothing = (int*)lt_dlsym(handle, "nothing");
  /* Try assigning to the nothing variable. */
  if (pnothing)
    *pnothing = 1;
  else
    {
      fprintf (stderr, "did not find the 'nothing' variable\n");
      fprintf (stderr, "error was: %s\n", lt_dlerror());
      ret = 1;
    }

  pfoo1 = (int(*)())lt_dlsym(handle, "foo1");
  /* Just call the functions and check return values. */
  if (pfoo1)
    {
      if ((*pfoo1) () == FOO_RET)
        printf("foo1 is ok!\n");
      else
	ret = 1;
    }
  else {
    pfoo2 = (int(*)())lt_dlsym(handle, "foo2");
    if (pfoo2)
      {
        if ((*pfoo2) () == FOO_RET)
          printf("foo2 is ok!\n");
        else ret = 1;
      }
    else
      {
        fprintf (stderr, "did not find any of the 'foo' functions\n");
        fprintf (stderr, "error was: %s\n", lt_dlerror());
        ret = 1;
      }
  }
  lt_dlclose(handle);
  return ret;
}

int
mlib_func (int argc, char **argv)
{
  int ret = 0;
  int i;
  /*
   * Would be nice if this somehow worked for libraries, not just executables.
   * LTDL_SET_PRELOADED_SYMBOLS();
   */
  if (lt_dlinit() != 0) {
    fprintf (stderr, "error during initialization: %s\n", lt_dlerror());
    return 1;
  }

  for (i = 1; i < argc; i++)
    if (test_dl(argv[i]))
       ret = 1;

  lt_dlexit();
  return ret;
}
]])

AT_DATA([sub.c],
[[#include <config.h>
#include <stdio.h>
void sub (void) { printf ("sub() called\n"); }
]])

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

#include "foo.h"
#include "ltdl.h"

#ifdef __cplusplus
#  define EXPORT extern "C"
#else
#  define EXPORT extern
#endif

EXPORT int myfunc (void);

int
test_dl (char *filename, int test_ext)
{
  lt_dlhandle handle;
  const lt_dlinfo *info;
  int (*pfoo1)() = 0;
  int (*pfoo2)() = 0;
  int (*phello)() = 0;
  int *pnothing = 0;
  int ret = 0;

  if (test_ext)
    handle = lt_dlopenext (filename);
  else
    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 1;
  }

  info = lt_dlgetinfo(handle);
  if (!info) {
    fprintf (stderr, "can't get module info: %s\n", lt_dlerror());
    return 1;
  }
  if (info->name) {
    printf ("module name: %s\n", info->name);
  } else {
    printf ("module is not a libtool module\n");
  }
  printf ("module filename: %s\n", info->filename);
  printf ("module reference count: %i\n", info->ref_count);

  phello = (int(*)())lt_dlsym(handle, "hello");
  if (phello)
    {
      int value = (*phello) ();

      printf ("hello returned: %i\n", value);
      if (value == HELLO_RET)
        printf("hello is ok!\n");
    }
  else
    {
      fprintf (stderr, "did not find the 'hello' function\n");
      fprintf (stderr, "error was: %s\n", lt_dlerror());
      ret = 1;
    }

  pnothing = (int*)lt_dlsym(handle, "nothing");
  /* Try assigning to the nothing variable. */
  if (pnothing)
    *pnothing = 1;
  else
    {
      fprintf (stderr, "did not find the 'nothing' variable\n");
      fprintf (stderr, "error was: %s\n", lt_dlerror());
      ret = 1;
    }

  pfoo1 = (int(*)())lt_dlsym(handle, "foo1");
  /* Just call the functions and check return values. */
  if (pfoo1)
    {
      if ((*pfoo1) () == FOO_RET)
        printf("foo1 is ok!\n");
      else
	ret = 1;
    }
  else {
    pfoo2 = (int(*)())lt_dlsym(handle, "foo2");
    if (pfoo2)
      {
        if ((*pfoo2) () == FOO_RET)
          printf("foo2 is ok!\n");
        else ret = 1;
      }
    else
      {
        fprintf (stderr, "did not find any of the 'foo' functions\n");
        fprintf (stderr, "error was: %s\n", lt_dlerror());
        ret = 1;
      }
  }
  lt_dlclose(handle);
  return ret;
}

int
myfunc ()
{
  return HELLO_RET;
}

int myvar;

int
test_dlself ()
{
  lt_dlhandle handle;
  int (*pmyfunc)() = 0;
  int *pmyvar = 0;
  int ret = 0;

  handle = lt_dlopen(0);
  if (!handle) {
    fprintf (stderr, "can't dlopen the program!\n");
    fprintf (stderr, "error was: %s\n", lt_dlerror());
    return 1;
  }

  pmyfunc = (int(*)())lt_dlsym(handle, "myfunc");
  if (pmyfunc)
    {
      int value = (*pmyfunc) ();

      printf ("myfunc returned: %i\n", value);
      if (value == HELLO_RET)
        printf("myfunc is ok!\n");
    }
  else
    {
      fprintf (stderr, "did not find the 'myfunc' function\n");
      fprintf (stderr, "error was: %s\n", lt_dlerror());
      ret = 1;
    }

  pmyvar = (int*)lt_dlsym(handle, "myvar");
  /* Try assigning to the variable. */
  if (pmyvar)
    *pmyvar = 1;
  else
    {
      fprintf (stderr, "did not find the 'myvar' variable\n");
      fprintf (stderr, "error was: %s\n", lt_dlerror());
      ret = 1;
    }

  lt_dlclose(handle);
  return ret;
}

static int
callback (const char *filename, void *data)
{
  printf ("%s: %s\n", (char *)data, filename);
  return 0;
}

static int
try_iterate (const char *search_path)
{
  char *s = "try_iterate";
  return lt_dlforeachfile (search_path, callback, s);
}

/* cheap dirname clone.  We require a '/' separator, nonempty and large
   enough input, not ending with '/', and we will overwrite the input. */
static char *
my_dirname (char *path)
{
  char *p = strrchr (path, '/');
  if (p)
    *p = '\0';
  else
    {
      path[0] = '.';
      path[1] = '\0';
    }
  return path;
}

int
main (int argc, char **argv)
{
  int i;
  int ret = 0;
  char *p;

  printf ("Welcome to GNU libtool mdemo!\n");

  if (argc < 2) {
    fprintf (stderr, "usage: %s module [module...]\n", argv[0]);
  }

  LTDL_SET_PRELOADED_SYMBOLS();
  if (lt_dlinit() != 0) {
    fprintf (stderr, "error during initialization: %s\n", lt_dlerror());
    return 1;
  }

  for (i = 1; i < argc; i++)
  {
    if (test_dl(argv[i], 0))
       ret = 1;
    p = strrchr(argv[i], '.');
    if (p)
      {
	*p = '\0';
	if (test_dl(argv[i], 1))
	  ret = 1;
	*p = '.';
      }
  }

  if (test_dlself())
    ret = 1;

  for (i = 1; i < argc; i++)
    if (argv[i][0] != '\0')
      {
	my_dirname (argv[i]);
	if (try_iterate (argv[i]))
	  ret = 1;
      }

  lt_dlexit();
  return ret;
}
]])

LT_AT_HOST_DATA([expout],
[[Welcome to GNU Hell!
cos (0.0) = 1
** This is not GNU Hello. There is no built-in mail reader. **
]])

prefix=`pwd`/_inst
]) # _LT_SETUP


# _LT_CHECK_EXECUTE
# -----------------
# Run the listed make rules, and check that the built binaries work.
m4_define([_LT_CHECK_EXECUTE],
[LT_AT_MAKE
LT_AT_EXEC_CHECK([./mdemo_static], 0, [ignore], [],
    [./foo1.la ./libfoo2.la | $GREP '^try_iterate: '])
LT_AT_EXEC_CHECK([./mdemo], 0, [ignore], [],
    [./foo1.la ./libfoo2.la | $GREP '^try_iterate: '])
LT_AT_EXEC_CHECK([./mdemo_static], 0, [ignore], [],
    [`pwd`/foo1.la `pwd`/libfoo2.la | $GREP '^try_iterate: '])
LT_AT_EXEC_CHECK([./mdemo], 0, [ignore], [],
    [`pwd`/foo1.la `pwd`/libfoo2.la | $GREP '^try_iterate: '])
])

# _LT_CHECK_INSTALL
# -----------------
# Run the make install rule, and check that installed binaries work too.
m4_define([_LT_CHECK_INSTALL],
[LT_AT_MAKE([install])

# Windows hosts search for dlls in the command path.
PATH=$prefix/lib:$PATH

LT_AT_EXEC_CHECK([$prefix/bin/mdemo_static], 0, [ignore], [],
    [$prefix/lib/foo1.la $prefix/lib/libfoo2.la | $GREP '^try_iterate: '])
LT_AT_EXEC_CHECK([$prefix/bin/mdemo], 0, [ignore], [],
    [$prefix/lib/foo1.la $prefix/lib/libfoo2.la | $GREP '^try_iterate: '])
])


## ------------- ##
## Mdemo static. ##
## ------------- ##

AT_SETUP([dynamically ltdl preload static modules])

_LT_SETUP

LT_AT_CHECK_CONFIG([--with-included-ltdl --disable-shared],
                   [^build_old_libs=yes], [^build_libtool_libs=no])
_LT_CHECK_EXECUTE
_LT_CHECK_INSTALL
LT_AT_CHECK_UNINSTALL

AT_CLEANUP


## ------------- ##
## Mdemo shared. ##
## ------------- ##

AT_SETUP([dynamically ltdl load a shared module])

_LT_SETUP

LT_AT_CHECK_CONFIG([--with-included-ltdl --disable-static],
                   [^build_old_libs=no], [^build_libtool_libs=yes])
_LT_CHECK_EXECUTE
_LT_CHECK_INSTALL
LT_AT_CHECK_UNINSTALL

AT_CLEANUP


## ----------- ##
## Mdemo conf. ##
## ----------- ##

AT_SETUP([ltdl load shared and static modules])

_LT_SETUP

LT_AT_CHECK_CONFIG([--with-included-ltdl],
                   [^build_old_libs=yes], [^build_libtool_libs=yes])
_LT_CHECK_EXECUTE
_LT_CHECK_INSTALL
LT_AT_CHECK_UNINSTALL

AT_CLEANUP


## ------------- ##
## Mdemo dryrun. ##
## ------------- ##

AT_SETUP([ltdl dryrun])

_LT_SETUP

LT_AT_CHECK_CONFIG([--with-included-ltdl])
LT_AT_MAKE([all-local libltdl/libltdlc.la])

# create 'before' and 'after' in a directory deep within objdir,
# so that their creation and removal does not modify even a timestamp
# in the output of 'ls -l . $objdir'
$lt_INSTALL -d "$objdir/temp/temp"
before=$objdir/temp/temp/before
after=$objdir/temp/temp/after

# Create a new libtool script that will enter dry run if the environment
# variable force_dry_run is set
$SED 's|^[[	 ]]*opt_dry_run=.*$|opt_dry_run=$force_dry_run|' libtool > ltnew && mv ltnew libtool
export force_dry_run

# main.o is not compiled with libtool, but it depends on it, so make
# sure it is up-to-date.  libfoo2.la is linked with libsub.la, so make
# sure it exists, otherwise libtool will complain.
force_dry_run=false
LT_AT_MAKE([main.$objext])

# Making object files
# ls -l in MSYS sometimes shows year, not time, for really fresh files.
sleep 1
ls -l . "$objdir" | $EGREP -v '(^total|testsuite.log$)' > "$before"
force_dry_run=:
LT_AT_MAKE([foo1.lo foo2.lo libsub.la])
ls -l . "$objdir" | $EGREP -v '(^total|testsuite.log$)' > "$after"
AT_CHECK([cmp "$before" "$after"], 0, [ignore])

# Now really make them
force_dry_run=false
LT_AT_MAKE([foo1.lo foo2.lo libsub.la])

# Making libraries
sleep 1 # for MSYS
ls -l . "$objdir" | $EGREP -v '(^total|testsuite.log$)' > "$before"
force_dry_run=:
LT_AT_MAKE([foo1.la libfoo2.la])
ls -l . "$objdir" | $EGREP -v '(^total|testsuite.log$)' > "$after"
AT_CHECK([cmp "$before" "$after"], 0, [ignore])

# Now really make them
force_dry_run=false
LT_AT_MAKE([foo1.la libfoo2.la])

# Making programs
sleep 1 # for MSYS
ls -l . "$objdir" | $EGREP -v '(^total|testsuite.log$)' > "$before"
force_dry_run=:
LT_AT_MAKE([mdemo$EXEEXT mdemo_static$EXEEXT])
ls -l . "$objdir" | $EGREP -v '(^total|testsuite.log$)' > "$after"
AT_CHECK([cmp "$before" "$after"], 0, [ignore])

# Running $MAKE install
# Libtool does not create these directories
$lt_INSTALL -d "$prefix/bin"
$lt_INSTALL -d "$prefix/include"
$lt_INSTALL -d "$prefix/lib"

sleep 1 # for MSYS
ls -l . "$objdir" | $EGREP -v '(^total|testsuite.log$)' > "$before"
ls -lR "$prefix" | $EGREP -v '(^total|testsuite.log$)' >> "$before"
force_dry_run=:
LT_AT_MAKE([install])

ls -l . "$objdir" | $EGREP -v '(^total|testsuite.log$)' > "$after"
ls -lR "$prefix" | $EGREP -v '(^total|testsuite.log$)' >> "$after"
AT_CHECK([cmp "$before" "$after"], 0, [ignore])

# Now really install
force_dry_run=false
LT_AT_MAKE([install])

# Running $MAKE uninstall
# Libtool does not uninstall the programs, remove them first
rm -f "$prefix/bin/mdemo$EXEEXT" "$prefix/bin/mdemo_static$EXEEXT"

sleep 1 # for MSYS
ls -l . "$objdir" | $EGREP -v '(^total|testsuite.log$)' > "$before"
ls -lR "$prefix" | $EGREP -v '(^total|testsuite.log$)' >> "$before"
force_dry_run=:
LT_AT_MAKE([uninstall])
ls -l . "$objdir" | $EGREP -v '(^total|testsuite.log$)' > "$after"
ls -lR "$prefix" | $EGREP -v '(^total|testsuite.log$)' >> "$after"
AT_CHECK([cmp "$before" "$after"], 0, [ignore])

# Now really uninstall
force_dry_run=false
LT_AT_CHECK_UNINSTALL

AT_CLEANUP

## ------- ##
## Mdemo2. ##
## ------- ##

AT_SETUP([link with library that loads ltdl modules])

_LT_SETUP

AT_DATA([mdemo.mk],
[[bin_PROGRAMS += mdemo2 mdemo2_static

# Create a version of mdemo2 that links a library that does dlopen.
mdemo2_LDFLAGS = -export-dynamic "-dlopen" force
mdemo2_LDADD = libmlib.la

# Create a statically linked version of mdemo.
mdemo2_static_SOURCES = mdemo2.c
mdemo2_static_LDFLAGS = $(STATIC) $(mdemo2_LDFLAGS)
mdemo2_static_LDADD = $(mdemo2_LDADD)
mdemo2_static_DEPENDENCIES = $(mdemo2_DEPENDENCIES)
]])

AT_DATA([mdemo2.c],
[[#include <stdio.h>
#include "ltdl.h"

extern int mlib_func (int, char **);

int main (int argc, char **argv)
{
  int ret = 0;

  printf ("Welcome to GNU libtool mdemo2!\n");
  if (argc < 2) {
    fprintf (stderr, "usage: %s module [module...]\n", argv[0]);
  }

  /* This must be called in the program to get the preloaded symbols */
  LTDL_SET_PRELOADED_SYMBOLS();

  ret = mlib_func(argc, argv);

  return ret;
}
]])

# Normalize line endings after $EGREP instead of using LT_AT_HOST_DATA
# here, since $EGREP *may* normalize line endings for us.
AT_DATA([expout],
[[Welcome to GNU libtool mdemo2!
module name: foo1
module reference count: 1
** This is foolib 1 **
hello returned: 57616
hello is ok!
cos (0.0) = 1
sub() called
foo1 is ok!
module name: libfoo2
module reference count: 1
** This is foolib 2 **
hello returned: 57616
hello is ok!
sin (0.0) = 0
sub() called
foo2 is ok!
]])

LT_AT_CHECK_CONFIG([--with-included-ltdl])

LT_AT_MAKE

LT_AT_EXEC_CHECK([./mdemo2_static], 0, [stdout], [],
    [./foo1.la ./libfoo2.la | $EGREP -v '^module filename: '])
LT_AT_UNIFY_NL([stdout])
LT_AT_CHECK([diff expout stdout])

LT_AT_EXEC_CHECK([./mdemo2], 0, [stdout], [],
    [./foo1.la ./libfoo2.la | $EGREP -v '^module filename: '])
LT_AT_UNIFY_NL([stdout])
LT_AT_CHECK([diff expout stdout])

AT_CLEANUP