conform/GlibcConform.pm

   1 #!/usr/bin/perl
   2
   3 # Shared code for glibc conformance tests.
   4
   5 # Copyright (C) 2014-2017 Free Software Foundation, Inc.
   6 # This file is part of the GNU C Library.
   7
   8 # The GNU C Library is free software; you can redistribute it and/or
   9 # modify it under the terms of the GNU Lesser General Public
  10 # License as published by the Free Software Foundation; either
  11 # version 2.1 of the License, or (at your option) any later version.
  12
  13 # The GNU C Library is distributed in the hope that it will be useful,
  14 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16 # Lesser General Public License for more details.
  17
  18 # You should have received a copy of the GNU Lesser General Public
  19 # License along with the GNU C Library; if not, see
  20 # <http://www.gnu.org/licenses/>.
  21
  22 package GlibcConform;
  23 require Exporter;
  24 @ISA = qw(Exporter);
  25 @EXPORT = qw(%CFLAGS list_exported_functions);
  26
  27 # Compiler options for each standard.
  28 $CFLAGS{"ISO"} = "-ansi";
  29 $CFLAGS{"ISO99"} = "-std=c99";
  30 $CFLAGS{"ISO11"} = "-std=c11";
  31 $CFLAGS{"POSIX"} = "-D_POSIX_C_SOURCE=199506L -ansi";
  32 $CFLAGS{"XPG4"} = "-ansi -D_XOPEN_SOURCE";
  33 $CFLAGS{"XPG42"} = "-ansi -D_XOPEN_SOURCE -D_XOPEN_SOURCE_EXTENDED";
  34 $CFLAGS{"UNIX98"} = "-ansi -D_XOPEN_SOURCE=500";
  35 $CFLAGS{"XOPEN2K"} = "-std=c99 -D_XOPEN_SOURCE=600";
  36 $CFLAGS{"XOPEN2K8"} = "-std=c99 -D_XOPEN_SOURCE=700";
  37 $CFLAGS{"POSIX2008"} = "-std=c99 -D_POSIX_C_SOURCE=200809L";
  38
  39 # Return a list of functions exported by a header, empty if an include
  40 # of the header does not compile.
  41 sub list_exported_functions {
  42   my ($cc, $standard, $header, $tmpdir) = @_;
  43   my ($cc_all) = "$cc -D_ISOMAC $CFLAGS{$standard}";
  44   my ($tmpfile) = "$tmpdir/list-$$.c";
  45   my ($auxfile) = "$tmpdir/list-$$.c.aux";
  46   my ($ret);
  47   my (%res) = ();
  48   open (TMPFILE, ">$tmpfile") || die ("open $tmpfile: $!\n");
  49   print TMPFILE "#include <$header>\n";
  50   close (TMPFILE) || die ("close $tmpfile: $!\n");
  51   $ret = system "$cc_all -c $tmpfile -o /dev/null -aux-info $auxfile > /dev/null";
  52   unlink ($tmpfile) || die ("unlink $tmpfile: $!\n");
  53   if ($ret != 0) {
  54     return;
  55   }
  56   open (AUXFILE, "<$auxfile") || die ("open $auxfile: $!\n");
  57   while (<AUXFILE>) {
  58     s|/\*.*?\*/||g;
  59     if (/^\s*$/) {
  60       next;
  61     }
  62     # The word before a '(' that isn't '(*' is the function name
  63     # before the argument list (not fully general, but sufficient for
  64     # -aux-info output on standard headers).
  65     if (/(\w+)\s*\([^*]/) {
  66       $res{$1} = 1;
  67     } else {
  68       die ("couldn't parse -aux-info output: $_\n");
  69     }
  70   }
  71   close (AUXFILE) || die ("close $auxfile: $!\n");
  72   unlink ($auxfile) || die ("unlink $auxfile: $!\n");
  73   return sort keys %res;
  74 }