1# Copyright (C) 2002, 2004 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 2 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 this program; if not, write to the Free Software 15# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. 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_CXX_UNDER_TEST in the environment. 27 28if $tracelevel then { 29 strace $tracelevel 30} 31 32global GXX_UNDER_TEST 33global ld_library_path 34 35# Load procedures from common libraries. 36load_lib standard.exp 37load_lib g++.exp 38load_lib target-libpath.exp 39 40# 41# compat-use-alt-compiler -- make the alternate compiler the default 42# 43proc compat-use-alt-compiler { } { 44 global GXX_UNDER_TEST ALT_CXX_UNDER_TEST 45 global CXXFLAGS 46 global ALWAYS_CXXFLAGS 47 global ld_library_path alt_ld_library_path 48 global same_alt 49 50 # We don't need to do this if the alternate compiler is actually 51 # the same as the compiler under test. 52 if { $same_alt == 0 } then { 53 set GXX_UNDER_TEST $ALT_CXX_UNDER_TEST 54 set CXXFLAGS "" 55 set ALWAYS_CXXFLAGS "" 56 set ld_library_path $alt_ld_library_path 57 set_ld_library_path_env_vars 58 } 59} 60 61# 62# compat-use-tst-compiler -- make compiler under test the default 63# 64proc compat-use-tst-compiler { } { 65 global GXX_UNDER_TEST save_gxx_under_test 66 global CXXFLAGS save_cxxflags 67 global ALWAYS_CXXFLAGS save_always_cxxflags 68 global ld_library_path save_ld_library_path 69 global same_alt 70 71 # We don't need to do this if the alternate compiler is actually 72 # the same as the compiler under test. 73 74 if { $same_alt == 0 } then { 75 set GXX_UNDER_TEST $save_gxx_under_test 76 set CXXFLAGS $save_cxxflags 77 set ALWAYS_CXXFLAGS $save_always_cxxflags 78 set ld_library_path $save_ld_library_path 79 set_ld_library_path_env_vars 80 } 81} 82 83# Load the language-independent compabibility support procedures. 84# This must be done after the compat-use-*-compiler definitions. 85load_lib compat.exp 86 87g++_init 88 89# Save variables for the C++ compiler under test, which each test will 90# change a couple of times. This must be done after calling g++-init. 91set save_gxx_under_test $GXX_UNDER_TEST 92set save_cxxflags $CXXFLAGS 93set save_always_cxxflags $ALWAYS_CXXFLAGS 94set save_ld_library_path $ld_library_path 95 96# Define an identifier for use with this suite to avoid name conflicts 97# with other compat tests running at the same time. 98set sid "cp_compat" 99 100# Find out whether there is an alternate compiler to test. If the 101# variable is defined but is set to "same", that means we use the same 102# compiler twice, which is meaningful if the two parts of COMPAT_OPTIONS 103# are different. 104set use_alt 0 105set same_alt 0 106set alt_ld_library_path "." 107if [info exists ALT_CXX_UNDER_TEST] then { 108 set use_alt 1 109 if [string match "same" $ALT_CXX_UNDER_TEST] then { 110 set same_alt 1 111 } else { 112 if [info exists ALT_LD_LIBRARY_PATH] then { 113 append alt_ld_library_path ":${ALT_LD_LIBRARY_PATH}" 114 } 115 } 116} 117 118# Main loop. 119foreach src [lsort [find $srcdir/$subdir *_main.C]] { 120 # If we're only testing specific files and this isn't one of them, skip it. 121 if ![runtest_file_p $runtests $src] then { 122 continue 123 } 124 125 compat-execute $src $sid $use_alt 126} 127 128# Restore the original compiler under test. 129compat-use-tst-compiler 130