ghc/driver/ghc-consist.lprl

   1 %************************************************************************
   2 %*                                                                      *
   3 \section[Driver-consistency-chk]{@chk_consistency_info@: Check an executable for consistency}
   4 %*                                                                      *
   5 %************************************************************************
   6
   7 \begin{code}
   8 sub chk_consistency_info {
   9     local($executable) = @_;
  10
  11     local($major_version, $minor_version);
  12     local($phase, $infile, $opts);
  13
  14     # append .exe if it's not there under cygwin32
  15     $executable = "${executable}.exe" if $TargetPlatform eq 'i386-unknown-cygwin32' &&
  16                                          $executable !~ /\...*$/ ;
  17
  18     print STDERR "Checking consistency of: $executable\n" if $Verbose;
  19
  20     &tidy_up_and_die(1, "Panic: no such executable: $executable\n")
  21         if ( ! -x $executable ) && ( ! -B $executable );
  22     # perl apparently determines whether something is executable
  23     # by looking at the file suffix under win32/cygwin32 !?!
  24     # Hence, we try binary files if (! -x) fails.
  25
  26     # by this point, consistency strings (with commas) have become
  27     # local symbols (with .'s)
  28     $HsC_consist_options =~ s/,/./g;
  29     $Cc_consist_options  =~ s/,/./g;
  30
  31     # now run `nm' and check all the version info
  32     open(CONSIST, "$Nm -p $executable |") || &tidy_up_and_die(1,"$Pgm: can't run: $Nm\n");
  33     while (<CONSIST>) {
  34         chop;
  35         next if ! /^[\da-fA-F]+\s+[tn]\s+(hsc|cc)\./;
  36
  37         if (/^[\da-fA-F]+\s+[tn]\s+(hsc|cc)\.(\S+)\.(\d+)\.(\d+)\.(.*)/) {
  38             $phase = $1; $infile = $2;
  39             $major_version = $3; $minor_version = $4;
  40             $opts = $5;
  41             if ($phase eq 'hsc') {
  42                 $Status++,
  43                 print STDERR "$Pgm: consistency error: major version not $HsC_major_version:\n$_\n"
  44                     if $major_version != $HsC_major_version;
  45                 print STDERR "$Pgm: consistency warning: minor version not $HsC_minor_version:\n$_\n"
  46                     if $minor_version != $HsC_minor_version;
  47                 $Status++,
  48                 print STDERR "$Pgm: consistency error: not options $opts -- $HsC_consist_options:\n$_\n"
  49                     if $opts ne $HsC_consist_options;
  50
  51             } else { # phase is cc ...
  52                 $Status++,
  53                 print STDERR "$Pgm: consistency error: major version not $Cc_major_version:\n$_\n"
  54                     if $major_version != $Cc_major_version;
  55                 print STDERR "$Pgm: consistency warning: minor version not $Cc_minor_version:\n$_\n"
  56                     if $minor_version != $Cc_minor_version;
  57
  58                 $Status++,
  59                 print STDERR "$Pgm: consistency error: not options $Cc_consist_options:\n$_\n"
  60                     if $opts ne $Cc_consist_options;
  61             }
  62         } else {
  63             print STDERR "$Pgm: consistency-checking: unrecognised `what' line:\n$_\n";
  64         }
  65     }
  66     close(CONSIST) || &tidy_up_and_die(1,"Failed in running $Nm (consistency checking)\n");
  67 }
  68
  69 # make "require"r happy...
  70 1;
  71 \end{code}