gnu/dist/gcc4/gcc/testsuite/g++.dg/compat/compat.exp

   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
  28 if $tracelevel then {
  29     strace $tracelevel
  30 }
  31
  32 global GXX_UNDER_TEST
  33 global ld_library_path
  34
  35 # Load procedures from common libraries.
  36 load_lib standard.exp
  37 load_lib g++.exp
  38 load_lib target-libpath.exp
  39
  40 #
  41 # compat-use-alt-compiler -- make the alternate compiler the default
  42 #
  43 proc 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 #
  64 proc 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.
  85 load_lib compat.exp
  86
  87 g++_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.
  91 set save_gxx_under_test $GXX_UNDER_TEST
  92 set save_cxxflags $CXXFLAGS
  93 set save_always_cxxflags $ALWAYS_CXXFLAGS
  94 set 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.
  98 set 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.
 104 set use_alt 0
 105 set same_alt 0
 106 set alt_ld_library_path "."
 107 if [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.
 119 foreach 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.
 129 compat-use-tst-compiler