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     print STDERR "Checking consistency of: $executable\n" if $Verbose;
  15
  16     &tidy_up_and_die(1, "Panic: no such executable: $executable\n")
  17         if ! -x $executable;
  18
  19     # by this point, consistency strings (with commas) have become
  20     # local symbols (with .'s)
  21     $HsC_consist_options =~ s/,/./g;
  22     $Cc_consist_options  =~ s/,/./g;
  23
  24     # now run `nm' and check all the version info
  25     open(CONSIST, "$Nm -p $executable |") || &tidy_up_and_die(1,"$Pgm: can't run: $Nm\n");
  26     while (<CONSIST>) {
  27         chop;
  28         next if ! /^[\da-fA-F]+\s+[tn]\s+(hsc|cc)\./;
  29
  30         if (/^[\da-fA-F]+\s+[tn]\s+(hsc|cc)\.(\S+)\.(\d+)\.(\d+)\.(.*)/) {
  31             $phase = $1; $infile = $2;
  32             $major_version = $3; $minor_version = $4;
  33             $opts = $5;
  34             if ($phase eq 'hsc') {
  35                 $Status++,
  36                 print STDERR "$Pgm: consistency error: major version not $HsC_major_version:\n$_\n"
  37                     if $major_version != $HsC_major_version;
  38                 print STDERR "$Pgm: consistency warning: minor version not $HsC_minor_version:\n$_\n"
  39                     if $minor_version != $HsC_minor_version;
  40                 $Status++,
  41                 print STDERR "$Pgm: consistency error: not options $opts -- $HsC_consist_options:\n$_\n"
  42                     if $opts ne $HsC_consist_options;
  43
  44             } else { # phase is cc ...
  45                 $Status++,
  46                 print STDERR "$Pgm: consistency error: major version not $Cc_major_version:\n$_\n"
  47                     if $major_version != $Cc_major_version;
  48                 print STDERR "$Pgm: consistency warning: minor version not $Cc_minor_version:\n$_\n"
  49                     if $minor_version != $Cc_minor_version;
  50
  51                 $Status++,
  52                 print STDERR "$Pgm: consistency error: not options $Cc_consist_options:\n$_\n"
  53                     if $opts ne $Cc_consist_options;
  54             }
  55         } else {
  56             print STDERR "$Pgm: consistency-checking: unrecognised `what' line:\n$_\n";
  57         }
  58     }
  59     close(CONSIST) || &tidy_up_and_die(1,"Failed in running $Nm (consistency checking)\n");
  60 }
  61
  62 # make "require"r happy...
  63 1;
  64 \end{code}