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1 # Copyright (C) 2002-2017 Free Software Foundation, Inc.
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2
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3 # This program is free software; you can redistribute it and/or modify
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4 # it under the terms of the GNU General Public License as published by
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5 # the Free Software Foundation; either version 3 of the License, or
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6 # (at your option) any later version.
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7 #
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8 # This program is distributed in the hope that it will be useful,
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9 # but WITHOUT ANY WARRANTY; without even the implied warranty of
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10 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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11 # GNU General Public License for more details.
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12 #
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13 # You should have received a copy of the GNU General Public License
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14 # along with GCC; see the file COPYING3. If not see
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15 # <http://www.gnu.org/licenses/>.
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16 #
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17 # This file was written by Janis Johnson, <janis187@us.ibm.com>
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18
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19
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20 # Test interoperability of two compilers that follow the same ABI.
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21 #
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22 # Break simple tests into two pieces and see that they work when linked
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23 # together. If an alternate compiler is specified then the two main
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24 # pieces of each test are compiled with different compilers. The
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25 # alternate compiler must be installed, and is specified by defining
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26 # ALT_CC_UNDER_TEST in the environment.
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27
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28 if $tracelevel then {
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29 strace $tracelevel
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30 }
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31
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32 global GCC_UNDER_TEST
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33 global ALT_CC_UNDER_TEST
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34 global compat_save_gcc_under_test
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35 global compat_use_alt
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36 global compat_same_alt
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37 global compat_have_dfp
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38
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39 # Load procedures from common libraries.
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40 load_lib standard.exp
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41 load_lib gcc.exp
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42
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43 # Load the language-dependent compatibility support procedures.
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44 load_lib c-compat.exp
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45
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46 # Load the language-independent compabibility support procedures.
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47 load_lib compat.exp
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48
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49 gcc_init
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50
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51 # Save variables for the C compiler under test, which each test will
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52 # change a couple of times. This must be done after calling gcc-init.
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53 set compat_save_gcc_under_test $GCC_UNDER_TEST
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54
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55 # Define an identifier for use with this suite to avoid name conflicts
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56 # with other compat tests running at the same time.
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57 set sid "c_compat"
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58
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59 # Find out whether there is an alternate compiler to test. If the
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60 # variable is defined but is set to "same", that means we use the same
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61 # compiler twice, which is meaningful if the two parts of COMPAT_OPTIONS
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62 # are different.
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63 set compat_use_alt 0
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64 set compat_same_alt 0
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65
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66 if [info exists ALT_CC_UNDER_TEST] then {
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67 set compat_use_alt 1
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68 if [string match "same" $ALT_CC_UNDER_TEST] then {
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69 set compat_same_alt 1
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70 }
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71 }
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72
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73 compat_setup_dfp
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74
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75 # Main loop.
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76 foreach src [lsort [find $srcdir/$subdir *_main.c]] {
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77 # If we're only testing specific files and this isn't one of them, skip it.
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78 if ![runtest_file_p $runtests $src] then {
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79 continue
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80 }
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81
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82 compat-execute $src $sid $compat_use_alt
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83 }
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84
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85 # Restore the original compiler under test.
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86 compat-use-tst-compiler
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