compile.exp

this is a gcc file, you can download it and learn its usetility, for further detail please look at t

# Expect driver script for GCC Regression Tests
# Copyright (C) 1993, 1995, 1997 Free Software Foundation
#
# This file 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. 

# These tests come from Torbjorn Granlund's ([e-mail])
# C torture test suite, and other contributors.

if $tracelevel then {
    strace $tracelevel
}

# load support procs
load_lib c-torture.exp

foreach testcase [glob -nocomplain $srcdir/$subdir/*.c] {
    # If we're only testing specific files and this isn't one of them, skip it.
    if ![runtest_file_p $runtests $testcase] then {
	continue
    }

    c-torture $testcase
}