source: branches/samba-3.0/source/script/tests/dlopen.sh

#!/bin/sh
#
# Copyright (C) Nalin Dahyabhai <nalin@redhat.com> 2003
#
# 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, write to the Free Software
# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

tempdir=`mktemp -d /tmp/dlopenXXXXXX`
test -n "$tempdir" || exit 1
cat >> $tempdir/dlopen.c << _EOF
#include <dlfcn.h>
#include <stdio.h>
#include <limits.h>
#include <sys/stat.h>
/* Simple program to see if dlopen() would succeed. */
int main(int argc, char **argv)
{
        int i;
        struct stat st;
        char buf[PATH_MAX];
        for (i = 1; i < argc; i++) {
                if (dlopen(argv[i], RTLD_NOW)) {
                        fprintf(stdout, "dlopen() of \"%s\" succeeded.\n",
                                argv[i]);
                } else {
                        snprintf(buf, sizeof(buf), "./%s", argv[i]);
                        if ((stat(buf, &st) == 0) && dlopen(buf, RTLD_NOW)) {
                                fprintf(stdout, "dlopen() of \"./%s\" "
                                        "succeeded.\n", argv[i]);
                        } else {
                                fprintf(stdout, "dlopen() of \"%s\" failed: "
                                        "%s\n", argv[i], dlerror());
                                return 1;
                        }
                }
        }
        return 0;
}
_EOF

for arg in $@ ; do
        case "$arg" in
        "")
                ;;
        -I*|-D*|-f*|-m*|-g*|-O*|-W*)
                cflags="$cflags $arg"
                ;;
        -l*|-L*)
                ldflags="$ldflags $arg"
                ;;
        /*)
                modules="$modules $arg"
                ;;
        *)
                modules="$modules $arg"
                ;;
        esac
done

${CC:-gcc} $RPM_OPT_FLAGS $CFLAGS -o $tempdir/dlopen $cflags $tempdir/dlopen.c $ldflags -ldl

retval=0
for module in $modules ; do
        case "$module" in
        "")
                ;;
        /*)
                $tempdir/dlopen "$module"
                retval=$?
                ;;
        *)
                $tempdir/dlopen ./"$module"
                retval=$?
                ;;
        esac
done

rm -f $tempdir/dlopen $tempdir/dlopen.c
rmdir $tempdir
exit $retval