1# Copyright (C) 2002-2019 Free Software Foundation, Inc. 2 3# This program is free software; you can redistribute it and/or modify 4# it under the terms of the GNU General Public License as published by 5# the Free Software Foundation; either version 3 of the License, or 6# (at your option) any later version. 7# 8# This program is distributed in the hope that it will be useful, 9# but WITHOUT ANY WARRANTY; without even the implied warranty of 10# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 11# GNU General Public License for more details. 12# 13# You should have received a copy of the GNU General Public License 14# along with GCC; see the file COPYING3. If not see 15# <http://www.gnu.org/licenses/>. 16# 17# This file was written by Janis Johnson, <janis187@us.ibm.com> 18 19 20# Test interoperability of two compilers that follow the same ABI. 21# 22# Break simple tests into two pieces and see that they work when linked 23# together. If an alternate compiler is specified then the two main 24# pieces of each test are compiled with different compilers. The 25# alternate compiler must be installed, and is specified by defining 26# ALT_CC_UNDER_TEST in the environment. 27 28if $tracelevel then { 29 strace $tracelevel 30} 31 32global GCC_UNDER_TEST 33global ALT_CC_UNDER_TEST 34global compat_save_gcc_under_test 35global compat_use_alt 36global compat_same_alt 37global compat_have_dfp 38 39# Load procedures from common libraries. 40load_lib standard.exp 41load_lib gcc.exp 42 43# Load the language-dependent compatibility support procedures. 44load_lib c-compat.exp 45 46# Load the language-independent compabibility support procedures. 47load_lib compat.exp 48 49gcc_init 50 51# Save variables for the C compiler under test, which each test will 52# change a couple of times. This must be done after calling gcc-init. 53set compat_save_gcc_under_test $GCC_UNDER_TEST 54 55# Define an identifier for use with this suite to avoid name conflicts 56# with other compat tests running at the same time. 57set sid "c_compat" 58 59# Find out whether there is an alternate compiler to test. If the 60# variable is defined but is set to "same", that means we use the same 61# compiler twice, which is meaningful if the two parts of COMPAT_OPTIONS 62# are different. 63set compat_use_alt 0 64set compat_same_alt 0 65 66if [info exists ALT_CC_UNDER_TEST] then { 67 set compat_use_alt 1 68 if [string match "same" $ALT_CC_UNDER_TEST] then { 69 set compat_same_alt 1 70 } 71} 72 73compat_setup_dfp 74 75# Main loop. 76foreach src [lsort [find $srcdir/$subdir *_main.c]] { 77 # If we're only testing specific files and this isn't one of them, skip it. 78 if ![runtest_file_p $runtests $src] then { 79 continue 80 } 81 82 compat-execute $src $sid $compat_use_alt 83} 84 85# Restore the original compiler under test. 86compat-use-tst-compiler 87