gcc/testsuite/gcc.dg/compat/compat.exp

   1 # Copyright (C) 2002-2024 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
  28 if $tracelevel then {
  29     strace $tracelevel
  30 }
  31
  32 global GCC_UNDER_TEST
  33 global ALT_CC_UNDER_TEST
  34 global compat_save_gcc_under_test
  35 global compat_use_alt
  36 global compat_same_alt
  37 global compat_have_dfp
  38
  39 # Load procedures from common libraries.
  40 load_lib standard.exp
  41 load_lib gcc.exp
  42
  43 # Load the language-dependent compatibility support procedures.
  44 load_lib c-compat.exp
  45
  46 # Load the language-independent compabibility support procedures.
  47 load_lib compat.exp
  48
  49 gcc_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.
  53 set 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.
  57 set 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.
  63 set compat_use_alt 0
  64 set compat_same_alt 0
  65
  66 if [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
  73 compat_setup_dfp
  74
  75 # Main loop.
  76 foreach 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.
  86 compat-use-tst-compiler