[p5sagit/p5-mst-13.2.git] / vms / gen_shrfls.pl

# Create global symbol declarations, transfer vector, and
# linker options files for PerlShr.
#
# Input:
#    $cflags - command line qualifiers passed to cc when preprocesing perl.h
#        Note: A rather simple-minded attempt is made to restore quotes to
#        a /Define clause - use with care.
#    $objsuffix - file type (including '.') used for object files.
#    $libperl - Perl object library.
#    $extnames - package names for static extensions (used to generate
#        linker options file entries for boot functions)
#    $rtlopt - name of options file specifying RTLs to which PerlShr.Exe
#        must be linked
#
# Output:
#    PerlShr_Attr.Opt - linker options file which speficies that global vars
#        be placed in NOSHR,WRT psects.  Use when linking any object files
#        against PerlShr.Exe, since cc places global vars in SHR,WRT psects
#        by default.
#    PerlShr_Bld.Opt - declares universal symbols for PerlShr.Exe
#    Perlshr_Gbl*.Mar, Perlshr_Gbl*.Obj (VAX  only) - declares global symbols
#        for global vars (done here because gcc can't globaldef) and creates
#        transfer vectors for routines on a VAX.
#    PerlShr_Gbl.Opt (VAX only) - list of PerlShr_Gbl*.Obj, used for input
#        to the linker when building PerlShr.Exe.
#
# To do:
#   - figure out a good way to collect global vars in one psect, given that
#     we can't use globaldef because of gcc.
#   - then, check for existing files and preserve symbol and transfer vector
#     order for upward compatibility
#   - then, add GSMATCH to options file - but how do we insure that new
#     library has everything old one did
#     (i.e. /Define=DEBUGGING,EMBED,MULTIPLICITY)?
#
# Author: Charles Bailey  bailey@newman.upenn.edu

require 5.000;

$debug = $ENV{'GEN_SHRFLS_DEBUG'};

print "gen_shrfls.pl Rev. 14-Dec-1997\n" if $debug;

if ($ARGV[0] eq '-f') {
  open(INP,$ARGV[1]) or die "Can't read input file $ARGV[1]: $!\n";
  print "Input taken from file $ARGV[1]\n" if $debug;
  @ARGV = ();
  while (<INP>) {
    chomp;
    push(@ARGV,split(/\|/,$_));
  }
  close INP;
  print "Read input data | ",join(' | ',@ARGV)," |\n" if $debug > 1;
}

$cc_cmd = shift @ARGV;

# Someday, we'll have $GetSyI built into perl . . .
$isvax = `\$ Write Sys\$Output F\$GetSyI(\"HW_MODEL\")` <= 1024;
print "\$isvax: \\$isvax\\\n" if $debug;

print "Input \$cc_cmd: \\$cc_cmd\\\n" if $debug;
$docc = ($cc_cmd !~ /^~~/);
print "\$docc = $docc\n" if $debug;

if ($docc) {
  if (-f 'perl.h') { $dir = '[]'; }
  elsif (-f '[-]perl.h') { $dir = '[-]'; }
  else { die "$0: Can't find perl.h\n"; }

  # Go see if debugging is enabled in config.h
  $config = $dir . "config.h";
  open CONFIG, "< $config";
  while(<CONFIG>) {
    $debugging_enabled++ if /define\s+DEBUGGING/;
    $use_mymalloc++ if /define\s+MYMALLOC/;
    $hide_mymalloc++ if /define\s+EMBEDMYMALLOC/;
    $use_threads++ if /define\s+USE_THREADS/;
  }
  
  # put quotes back onto defines - they were removed by DCL on the way in
  if (($prefix,$defines,$suffix) =
         ($cc_cmd =~ m#(.*)/Define=(.*?)([/\s].*)#i)) {
    $defines =~ s/^\((.*)\)$/$1/;
    $debugging_enabled ||= $defines =~ /\bDEBUGGING\b/;
    @defines = split(/,/,$defines);
    $cc_cmd = "$prefix/Define=(" . join(',',grep($_ = "\"$_\"",@defines)) 
              . ')' . $suffix;
  }
  print "Filtered \$cc_cmd: \\$cc_cmd\\\n" if $debug;

  # check for gcc - if present, we'll need to use MACRO hack to
  # define global symbols for shared variables
  $isvaxc = 0;
  $isgcc = `$cc_cmd _nla0:/Version` =~ /GNU/
           or 0; # make debug output nice
  $isvaxc = (!$isgcc && $isvax &&
             # Check exit status too, in case message is shut off
             (`$cc_cmd /prefix=all _nla0:` =~ /IVQUAL/ || $? == 0x38240))
            or 0; # again, make debug output nice
  print "\$isgcc: $isgcc\n" if $debug;
  print "\$isvaxc: $isvaxc\n" if $debug;
  print "\$debugging_enabled: $debugging_enabled\n" if $debug;

}
else { 
  ($junk,$junk,$cpp_file,$cc_cmd) = split(/~~/,$cc_cmd,4);
  $isgcc = $cc_cmd =~ /case_hack/i
           or 0;  # for nice debug output
  $isvaxc = (!$isgcc && $cc_cmd !~ /standard=/i)
            or 0;  # again, for nice debug output
  $debugging_enabled = $cc_cmd =~ /\bdebugging\b/i;
  print "\$isgcc: \\$isgcc\\\n" if $debug;
  print "\$isvaxc: \\$isvaxc\\\n" if $debug;
  print "\$debugging_enabled: \\$debugging_enabled\\\n" if $debug;
  print "Not running cc, preprocesor output in \\$cpp_file\\\n" if $debug;
}

$objsuffix = shift @ARGV;
print "\$objsuffix: \\$objsuffix\\\n" if $debug;
$dbgprefix = shift @ARGV;
print "\$dbgprefix: \\$dbgprefix\\\n" if $debug;
$olbsuffix = shift @ARGV;
print "\$olbsuffix: \\$olbsuffix\\\n" if $debug;
$libperl = "${dbgprefix}libperl$olbsuffix";
$extnames = shift @ARGV;
print "\$extnames: \\$extnames\\\n" if $debug;
$rtlopt = shift @ARGV;
print "\$rtlopt: \\$rtlopt\\\n" if $debug;

# This part gets tricky.  VAXC creates global symbols for each of the
# constants in an enum if that enum is ever used as the data type of a
# global[dr]ef.  We have to detect enums which are used in this way, so we
# can set up the constants as universal symbols, since anything which
# #includes perl.h will want to resolve these global symbols.
# We're using a weak test here - we basically know that the only enums
# we need to handle now are the big one in opcode.h, and the
# "typedef enum { ... } expectation" in perl.h, so we hard code
# appropriate tests below. Since we can't know in general whether a given
# enum will be used elsewhere in a globaldef, it's hard to decide a
# priori whether its constants need to be treated as global symbols.
sub scan_enum {
  my($line) = @_;

  return unless $isvaxc;

  return unless /^\s+(OP|X)/;  # we only want opcode and expectation enums
  print "\tchecking for enum constant\n" if $debug > 1;
  $line =~ s#/\*.+##;
  $line =~ s/,?\s*\n?$//;
  print "\tfiltered to \\$line\\\n" if $debug > 1;
  if ($line =~ /(\w+)$/) {
    print "\tconstant name is \\$1\\\n" if $debug > 1;
    $enums{$1}++;
  }
}

sub scan_var {
  my($line) = @_;
  my($const) = $line =~ /^EXTCONST/;

  print "\tchecking for global variable\n" if $debug > 1;
  $line =~ s/\s*EXT/EXT/;
  $line =~ s/INIT\s*\(.*\)//;
  $line =~ s/\[.*//;
  $line =~ s/=.*//;
  $line =~ s/\W*;?\s*$//;
  $line =~ s/\W*\)\s*\(.*$//; # closing paren for args stripped in previous stmt
  print "\tfiltered to \\$line\\\n" if $debug > 1;
  if ($line =~ /(\w+)$/) {
    print "\tvar name is \\$1\\" . ($const ? ' (const)' : '') . "\n" if $debug > 1;
   if ($const) { $cvars{$1}++; }
   else        { $vars{$1}++;  }
  }
  if ($isvaxc) {
    my($type) = $line =~ /^\s*EXT\w*\s+(\w+)/;
    print "\tchecking for use of enum (type is \"$type\")\n" if $debug > 2;
    if ($type eq 'expectation') {
      $used_expectation_enum++;
      print "\tsaw global use of enum \"expectation\"\n" if $debug > 1;
    }
    if ($type eq 'opcode') {
      $used_opcode_enum++;
      print "\tsaw global use of enum \"opcode\"\n" if $debug > 1;
    }
  }
}

sub scan_func {
  my($line) = @_;

  print "\tchecking for global routine\n" if $debug > 1;
  if ( $line =~ /(\w+)\s+\(/ ) {
    print "\troutine name is \\$1\\\n" if $debug > 1;
    if ($1 eq 'main' || $1 eq 'perl_init_ext') {
      print "\tskipped\n" if $debug > 1;
    }
    else { $fcns{uc($1)}++ }
  }
}

open FUNCS, "LIBR/CROSS=SYMB LIBPERL.OLB/OUT=SYS\$OUTPUT |";
foreach (<FUNCS>) {
    chomp;
    next unless /(perl_\w+)/i;
    $fcns{uc($1)}++;
}

# Go add some right up front if we need 'em
if ($use_mymalloc) {
  $fcns{uc('Perl_malloc')}++;
  $fcns{uc('Perl_calloc')}++;
  $fcns{uc('Perl_realloc')}++;
  $fcns{uc('Perl_mfree')}++;
}

delete $fcns{PERL_DESTRUCT_LEVEL} if exists $fcns{PERL_DESTRUCT_LEVEL};

$used_expectation_enum = $used_opcode_enum = 0; # avoid warnings
if ($docc) {
  open(CPP,"${cc_cmd}/NoObj/PreProc=Sys\$Output ${dir}perl.h|")
    or die "$0: Can't preprocess ${dir}perl.h: $!\n";
}
else {
  open(CPP,"$cpp_file") or die "$0: Can't read preprocessed file $cpp_file: $!\n";
}
%checkh = map { $_,1 } qw( thread bytecode byterun proto );
$ckfunc = 0;
LINE: while (<CPP>) {
  while (/^#.*vmsish\.h/i .. /^#.*perl\.h/i) {
    while (/__VMS_PROTOTYPES__/i .. /__VMS_SEPYTOTORP__/i) {
      print "vms_proto>> $_" if $debug > 2;
      if (/^\s*EXT/) { &scan_var($_);  }
      else        { &scan_func($_); }
      last LINE unless defined($_ = <CPP>);
    }
    print "vmsish.h>> $_" if $debug > 2;
    if (/^\s*EXT/) { &scan_var($_); }
    last LINE unless defined($_ = <CPP>);
  }    
  while (/^#.*opcode\.h/i .. /^#.*perl\.h/i) {
    print "opcode.h>> $_" if $debug > 2;
    if (/^OP \*\s/) { &scan_func($_); }
    if (/^\s*EXT/) { &scan_var($_); }
    if (/^\s+OP_/) { &scan_enum($_); }
    last LINE unless defined($_ = <CPP>);
  }
  while (/^typedef enum/ .. /^\s*\}/) {
    print "global enum>> $_" if $debug > 2;
    &scan_enum($_);
    last LINE unless defined($_ = <CPP>);
  }
  # Check for transition to new header file
  if (/^# \d+ "(\S+)"/) {
    my $spec = $1;
    # Pull name from library module or header filespec
    $spec =~ /^(\w+)$/ or $spec =~ /(\w+)\.h/i;
    my $name = lc $1;
    $ckfunc = exists $checkh{$name} ? 1 : 0;
    $scanname = $name if $ckfunc;
    print "Header file transition: ckfunc = $ckfunc for $name.h\n" if $debug > 1;
  }
  if ($ckfunc) {
    print "$scanname>> $_" if $debug > 2;
    if (/\s*^EXT/) { &scan_var($_);  }
    else           { &scan_func($_); }
  }
  else {
    print $_ if $debug > 3 && ($debug > 5 || length($_));
    if (/^\s*EXT/) { &scan_var($_); }
  }
}
close CPP;

while (<DATA>) {
  next if /^#/;
  s/\s+#.*\n//;
  next if /^\s*$/;
  ($key,$array) = split('=',$_);
  if ($array eq 'vars') { $key = "PL_$key";   }
  else                  { $key = "Perl_$key"; }
  print "Adding $key to \%$array list\n" if $debug > 1;
  ${$array}{$key}++;
}
if ($debugging_enabled and $isgcc) { $vars{'colors'}++ }
foreach (split /\s+/, $extnames) {
  my($pkgname) = $_;
  $pkgname =~ s/::/__/g;
  $fcns{"boot_$pkgname"}++;
  print "Adding boot_$pkgname to \%fcns (for extension $_)\n" if $debug;
}

# If we're using VAXC, fold in the names of the constants for enums
# we've seen as the type of global vars.
if ($isvaxc) {
  foreach (keys %enums) {
    if (/^OP/) {
      $vars{$_}++ if $used_opcode_enum;
      next;
    }
    if (/^X/) {
      $vars{$_}++ if $used_expectation_enum;
      next;
    }
    print STDERR "Unrecognized enum constant \"$_\" ignored\n";
  }
}

# Eventually, we'll check against existing copies here, so we can add new
# symbols to an existing options file in an upwardly-compatible manner.

$marord++;
open(OPTBLD,">${dir}${dbgprefix}perlshr_bld.opt")
  or die "$0: Can't write to ${dir}${dbgprefix}perlshr_bld.opt: $!\n";
if ($isvax) {
  open(MAR,">${dir}perlshr_gbl${marord}.mar")
    or die "$0: Can't write to ${dir}perlshr_gbl${marord}.mar: $!\n";
  print MAR "\t.title perlshr_gbl$marord\n";
}

($ver, $sub) = $] =~ /\.(\d\d\d)(\d\d)/;
$gsmatch = ($sub >= 50) ? "equal" : "lequal";	# Force an equal match for
						# dev, but be more forgiving
						# for releases

# Build up a major ID. Since it can only be 8 bits, we encode the version
# number in the top four bits and use the bottom four for build options
# that'll cause incompatibilities
$ver *=16;
$ver += 8 if $debugging_enabled;	# If DEBUGGING is set
$ver += 4 if $use_threads;		# if we're threaded
$ver += 2 if $use_mymalloc;		# if we're using perl's malloc

print OPTBLD "GSMATCH=$gsmatch,$ver,$sub\n";

unless ($isgcc) {
  print OPTBLD "PSECT_ATTR=\$GLOBAL_RO_VARS,PIC,NOEXE,RD,NOWRT,SHR\n";
  print OPTBLD "PSECT_ATTR=\$GLOBAL_RW_VARS,PIC,NOEXE,RD,WRT,NOSHR\n";
}
foreach $var (sort (keys %vars,keys %cvars)) {
  if ($isvax) { print OPTBLD "UNIVERSAL=$var\n"; }
  else { print OPTBLD "SYMBOL_VECTOR=($var=DATA)\n"; }
  # This hack brought to you by the lack of a globaldef in gcc.
  if ($isgcc) {
    if ($count++ > 200) {  # max 254 psects/file
      print MAR "\t.end\n";
      close MAR;
      $marord++;
      open(MAR,">${dir}perlshr_gbl${marord}.mar")
        or die "$0: Can't write to ${dir}perlshr_gbl${marord}.mar: $!\n";
      print MAR "\t.title perlshr_gbl$marord\n";
      $count = 0;
    }
    print MAR "\t.psect ${var},long,pic,ovr,rd,wrt,noexe,noshr\n";
    print MAR "\t${var}::	.blkl 1\n";
  }
}

print MAR "\t.psect \$transfer_vec,pic,rd,nowrt,exe,shr\n" if ($isvax);
foreach $func (sort keys %fcns) {
  if ($isvax) {
    print MAR "\t.transfer $func\n";
    print MAR "\t.mask $func\n";
    print MAR "\tjmp G\^${func}+2\n";
  }
  else { print OPTBLD "SYMBOL_VECTOR=($func=PROCEDURE)\n"; }
}
if ($isvax) {
  print MAR "\t.end\n";
  close MAR;
}

open(OPTATTR,">${dir}perlshr_attr.opt")
  or die "$0: Can't write to ${dir}perlshr_attr.opt: $!\n";
if ($isvaxc) {
  print OPTATTR "PSECT_ATTR=\$CHAR_STRING_CONSTANTS,PIC,SHR,NOEXE,RD,NOWRT\n";
}
elsif ($isgcc) {
  foreach $var (sort keys %cvars) {
    print OPTATTR "PSECT_ATTR=${var},PIC,OVR,RD,NOEXE,NOWRT,SHR\n";
  }
  foreach $var (sort keys %vars) {
    print OPTATTR "PSECT_ATTR=${var},PIC,OVR,RD,NOEXE,WRT,NOSHR\n";
  }
}
else {
  print OPTATTR "! No additional linker directives are needed when using DECC\n";
}
close OPTATTR;

$incstr = 'perl,globals';
if ($isvax) {
  $drvrname = "Compile_shrmars.tmp_".time;
  open (DRVR,">$drvrname") or die "$0: Can't write to $drvrname: $!\n";
  print DRVR "\$ Set NoOn\n";  
  print DRVR "\$ Delete/NoLog/NoConfirm $drvrname;\n";
  print DRVR "\$ old_proc_vfy = F\$Environment(\"VERIFY_PROCEDURE\")\n";
  print DRVR "\$ old_img_vfy = F\$Environment(\"VERIFY_IMAGE\")\n";
  print DRVR "\$ MCR $^X -e \"\$ENV{'LIBPERL_RDT'} = (stat('$libperl'))[9]\"\n";
  print DRVR "\$ Set Verify\n";
  print DRVR "\$ If F\$Search(\"$libperl\").eqs.\"\" Then Library/Object/Create $libperl\n";
  do {
    push(@symfiles,"perlshr_gbl$marord");
    print DRVR "\$ Macro/NoDebug/Object=PerlShr_Gbl${marord}$objsuffix PerlShr_Gbl$marord.Mar\n";
    print DRVR "\$ Library/Object/Replace/Log $libperl PerlShr_Gbl${marord}$objsuffix\n";
  } while (--$marord); 
  # We had to have a working miniperl to run this program; it's probably the
  # one we just built.  It depended on LibPerl, which will be changed when
  # the PerlShr_Gbl* modules get inserted, so miniperl will be out of date,
  # and so, therefore, will all of its dependents . . .
  # We touch LibPerl here so it'll be back 'in date', and we won't rebuild
  # miniperl etc., and therefore LibPerl, the next time we invoke MM[KS].
  print DRVR "\$ old_proc_vfy = F\$Verify(old_proc_vfy,old_img_vfy)\n";
  print DRVR "\$ MCR $^X -e \"utime 0, \$ENV{'LIBPERL_RDT'}, '$libperl'\"\n";
  close DRVR;
}

# Initial hack to permit building of compatible shareable images for a
# given version of Perl.
if ($ENV{PERLSHR_USE_GSMATCH}) {
  my $major = int($] * 1000)                        & 0xFF;  # range 0..255
  my $minor = int(($] * 1000 - $major) * 100 + 0.5) & 0xFF;  # range 0..255
  print OPTBLD "GSMATCH=LEQUAL,$major,$minor\n";
  print OPTBLD 'CLUSTER=$$TRANSFER_VECTOR,,',
               map(",$_$objsuffix",@symfiles), "\n";
}
elsif (@symfiles) { $incstr .= ',' . join(',',@symfiles); }
# Include object modules and RTLs in options file
# Linker wants /Include and /Library on different lines
print OPTBLD "$libperl/Include=($incstr)\n";
print OPTBLD "$libperl/Library\n";
open(RTLOPT,$rtlopt) or die "$0: Can't read options file $rtlopt: $!\n";
while (<RTLOPT>) { print OPTBLD; }
close RTLOPT;
close OPTBLD;

exec "\$ \@$drvrname" if $isvax;


__END__

# Oddball cases, so we can keep the perl.h scan above simple
regkind=vars    # declared in regcomp.h
simple=vars     # declared in regcomp.h
varies=vars     # declared in regcomp.h
Commit	Line	Data
a0d0e21e	1	# Create global symbol declarations, transfer vector, and
	2	# linker options files for PerlShr.
	3	#
	4	# Input:
	5	# $cflags - command line qualifiers passed to cc when preprocesing perl.h
	6	# Note: A rather simple-minded attempt is made to restore quotes to
	7	# a /Define clause - use with care.
	8	# $objsuffix - file type (including '.') used for object files.
748a9306	9	# $libperl - Perl object library.
	10	# $extnames - package names for static extensions (used to generate
	11	# linker options file entries for boot functions)
	12	# $rtlopt - name of options file specifying RTLs to which PerlShr.Exe
	13	# must be linked
a0d0e21e	14	#
	15	# Output:
	16	# PerlShr_Attr.Opt - linker options file which speficies that global vars
	17	# be placed in NOSHR,WRT psects. Use when linking any object files
	18	# against PerlShr.Exe, since cc places global vars in SHR,WRT psects
	19	# by default.
748a9306	20	# PerlShr_Bld.Opt - declares universal symbols for PerlShr.Exe
a0d0e21e	21	# Perlshr_Gbl.Mar, Perlshr_Gbl.Obj (VAX only) - declares global symbols
	22	# for global vars (done here because gcc can't globaldef) and creates
	23	# transfer vectors for routines on a VAX.
	24	# PerlShr_Gbl.Opt (VAX only) - list of PerlShr_Gbl*.Obj, used for input
	25	# to the linker when building PerlShr.Exe.
	26	#
	27	# To do:
	28	# - figure out a good way to collect global vars in one psect, given that
	29	# we can't use globaldef because of gcc.
	30	# - then, check for existing files and preserve symbol and transfer vector
	31	# order for upward compatibility
	32	# - then, add GSMATCH to options file - but how do we insure that new
	33	# library has everything old one did
	34	# (i.e. /Define=DEBUGGING,EMBED,MULTIPLICITY)?
	35	#
bd3fa61c	36	# Author: Charles Bailey bailey@newman.upenn.edu
a0d0e21e	37
	38	require 5.000;
	39
	40	$debug = $ENV{'GEN_SHRFLS_DEBUG'};
a5f75d66	41
fc1ce8cc	42	print "gen_shrfls.pl Rev. 14-Dec-1997\n" if $debug;
71be2cbc	43
a5f75d66	44	if ($ARGV[0] eq '-f') {
	45	open(INP,$ARGV[1]) or die "Can't read input file $ARGV[1]: $!\n";
	46	print "Input taken from file $ARGV[1]\n" if $debug;
	47	@ARGV = ();
	48	while (<INP>) {
	49	chomp;
	50	push(@ARGV,split(/\\|/,$_));
	51	}
	52	close INP;
	53	print "Read input data \| ",join(' \| ',@ARGV)," \|\n" if $debug > 1;
	54	}
	55
a0d0e21e	56	$cc_cmd = shift @ARGV;
4633a7c4	57
	58	# Someday, we'll have $GetSyI built into perl . . .
	59	$isvax = `\$ Write Sys\$Output F\$GetSyI(\"HW_MODEL\")` <= 1024;
	60	print "\$isvax: \\$isvax\\\n" if $debug;
	61
a0d0e21e	62	print "Input \$cc_cmd: \\$cc_cmd\\\n" if $debug;
4633a7c4	63	$docc = ($cc_cmd !~ /^~~/);
a0d0e21e	64	print "\$docc = $docc\n" if $debug;
	65
	66	if ($docc) {
429a5e67	67	if (-f 'perl.h') { $dir = '[]'; }
	68	elsif (-f '[-]perl.h') { $dir = '[-]'; }
	69	else { die "$0: Can't find perl.h\n"; }
	70
	71	# Go see if debugging is enabled in config.h
	72	$config = $dir . "config.h";
	73	open CONFIG, "< $config";
	74	while(<CONFIG>) {
	75	$debugging_enabled++ if /define\s+DEBUGGING/;
429a5e67	76	$use_mymalloc++ if /define\s+MYMALLOC/;
5e4ba136	77	$hide_mymalloc++ if /define\s+EMBEDMYMALLOC/;
5e4ba136	78	$use_threads++ if /define\s+USE_THREADS/;
429a5e67	79	}
429a5e67	80
a0d0e21e	81	# put quotes back onto defines - they were removed by DCL on the way in
	82	if (($prefix,$defines,$suffix) =
	83	($cc_cmd =~ m#(.)/Define=(.?)([/\s].*)#i)) {
	84	$defines =~ s/^\((.*)\)$/$1/;
429a5e67	85	$debugging_enabled \|\|= $defines =~ /\bDEBUGGING\b/;
a0d0e21e	86	@defines = split(/,/,$defines);
	87	$cc_cmd = "$prefix/Define=(" . join(',',grep($_ = "\"$_\"",@defines))
	88	. ')' . $suffix;
	89	}
	90	print "Filtered \$cc_cmd: \\$cc_cmd\\\n" if $debug;
	91
4633a7c4	92	# check for gcc - if present, we'll need to use MACRO hack to
	93	# define global symbols for shared variables
	94	$isvaxc = 0;
	95	$isgcc = `$cc_cmd _nla0:/Version` =~ /GNU/
	96	or 0; # make debug output nice
71be2cbc	97	$isvaxc = (!$isgcc && $isvax &&
	98	# Check exit status too, in case message is shut off
	99	(`$cc_cmd /prefix=all _nla0:` =~ /IVQUAL/ \|\| $? == 0x38240))
4633a7c4	100	or 0; # again, make debug output nice
	101	print "\$isgcc: $isgcc\n" if $debug;
	102	print "\$isvaxc: $isvaxc\n" if $debug;
09b7f37c	103	print "\$debugging_enabled: $debugging_enabled\n" if $debug;
4633a7c4	104
a0d0e21e	105	}
4633a7c4	106	else {
a5f75d66	107	($junk,$junk,$cpp_file,$cc_cmd) = split(/~~/,$cc_cmd,4);
482b294c	108	$isgcc = $cc_cmd =~ /case_hack/i
4633a7c4	109	or 0; # for nice debug output
482b294c	110	$isvaxc = (!$isgcc && $cc_cmd !~ /standard=/i)
4633a7c4	111	or 0; # again, for nice debug output
09b7f37c	112	$debugging_enabled = $cc_cmd =~ /\bdebugging\b/i;
4633a7c4	113	print "\$isgcc: \\$isgcc\\\n" if $debug;
4633a7c4	114	print "\$isvaxc: \\$isvaxc\\\n" if $debug;
09b7f37c	115	print "\$debugging_enabled: \\$debugging_enabled\\\n" if $debug;
4633a7c4	116	print "Not running cc, preprocesor output in \\$cpp_file\\\n" if $debug;
4633a7c4	117	}
a0d0e21e	118
	119	$objsuffix = shift @ARGV;
	120	print "\$objsuffix: \\$objsuffix\\\n" if $debug;
748a9306	121	$dbgprefix = shift @ARGV;
	122	print "\$dbgprefix: \\$dbgprefix\\\n" if $debug;
	123	$olbsuffix = shift @ARGV;
	124	print "\$olbsuffix: \\$olbsuffix\\\n" if $debug;
	125	$libperl = "${dbgprefix}libperl$olbsuffix";
	126	$extnames = shift @ARGV;
	127	print "\$extnames: \\$extnames\\\n" if $debug;
	128	$rtlopt = shift @ARGV;
	129	print "\$rtlopt: \\$rtlopt\\\n" if $debug;
a0d0e21e	130
e518068a	131	# This part gets tricky. VAXC creates global symbols for each of the
4633a7c4	132	# constants in an enum if that enum is ever used as the data type of a
	133	# global[dr]ef. We have to detect enums which are used in this way, so we
	134	# can set up the constants as universal symbols, since anything which
	135	# #includes perl.h will want to resolve these global symbols.
	136	# We're using a weak test here - we basically know that the only enums
	137	# we need to handle now are the big one in opcode.h, and the
	138	# "typedef enum { ... } expectation" in perl.h, so we hard code
	139	# appropriate tests below. Since we can't know in general whether a given
	140	# enum will be used elsewhere in a globaldef, it's hard to decide a
	141	# priori whether its constants need to be treated as global symbols.
	142	sub scan_enum {
	143	my($line) = @_;
	144
	145	return unless $isvaxc;
	146
	147	return unless /^\s+(OP\|X)/; # we only want opcode and expectation enums
	148	print "\tchecking for enum constant\n" if $debug > 1;
	149	$line =~ s#/\*.+##;
	150	$line =~ s/,?\s*\n?$//;
	151	print "\tfiltered to \\$line\\\n" if $debug > 1;
	152	if ($line =~ /(\w+)$/) {
c07a80fd	153	print "\tconstant name is \\$1\\\n" if $debug > 1;
c07a80fd	154	$enums{$1}++;
4633a7c4	155	}
4633a7c4	156	}
a0d0e21e	157
	158	sub scan_var {
	159	my($line) = @_;
71be2cbc	160	my($const) = $line =~ /^EXTCONST/;
a0d0e21e	161
748a9306	162	print "\tchecking for global variable\n" if $debug > 1;
3e3baf6d	163	$line =~ s/\s*EXT/EXT/;
3e3baf6d	164	$line =~ s/INIT\s\(.\)//;
a0d0e21e	165	$line =~ s/\[.*//;
	166	$line =~ s/=.*//;
	167	$line =~ s/\W;?\s$//;
61bb5906	168	$line =~ s/\W\)\s\(.*$//; # closing paren for args stripped in previous stmt
748a9306	169	print "\tfiltered to \\$line\\\n" if $debug > 1;
a0d0e21e	170	if ($line =~ /(\w+)$/) {
71be2cbc	171	print "\tvar name is \\$1\\" . ($const ? ' (const)' : '') . "\n" if $debug > 1;
	172	if ($const) { $cvars{$1}++; }
	173	else { $vars{$1}++; }
	174	}
	175	if ($isvaxc) {
3e3baf6d	176	my($type) = $line =~ /^\sEXT\w\s+(\w+)/;
71be2cbc	177	print "\tchecking for use of enum (type is \"$type\")\n" if $debug > 2;
	178	if ($type eq 'expectation') {
	179	$used_expectation_enum++;
	180	print "\tsaw global use of enum \"expectation\"\n" if $debug > 1;
	181	}
	182	if ($type eq 'opcode') {
	183	$used_opcode_enum++;
	184	print "\tsaw global use of enum \"opcode\"\n" if $debug > 1;
	185	}
a0d0e21e	186	}
	187	}
	188
	189	sub scan_func {
	190	my($line) = @_;
	191
748a9306	192	print "\tchecking for global routine\n" if $debug > 1;
b9f71c63	193	if ( $line =~ /(\w+)\s+\(/ ) {
748a9306	194	print "\troutine name is \\$1\\\n" if $debug > 1;
a0d0e21e	195	if ($1 eq 'main' \|\| $1 eq 'perl_init_ext') {
748a9306	196	print "\tskipped\n" if $debug > 1;
a0d0e21e	197	}
5e4ba136	198	else { $fcns{uc($1)}++ }
a0d0e21e	199	}
	200	}
	201
5e4ba136	202	open FUNCS, "LIBR/CROSS=SYMB LIBPERL.OLB/OUT=SYS\$OUTPUT \|";
	203	foreach (<FUNCS>) {
	204	chomp;
	205	next unless /(perl_\w+)/i;
	206	$fcns{uc($1)}++;
	207	}
	208
429a5e67	209	# Go add some right up front if we need 'em
429a5e67	210	if ($use_mymalloc) {
5e4ba136	211	$fcns{uc('Perl_malloc')}++;
	212	$fcns{uc('Perl_calloc')}++;
	213	$fcns{uc('Perl_realloc')}++;
	214	$fcns{uc('Perl_mfree')}++;
429a5e67	215	}
429a5e67	216
5e4ba136	217	delete $fcns{PERL_DESTRUCT_LEVEL} if exists $fcns{PERL_DESTRUCT_LEVEL};
5e4ba136	218
c07a80fd	219	$used_expectation_enum = $used_opcode_enum = 0; # avoid warnings
a0d0e21e	220	if ($docc) {
	221	open(CPP,"${cc_cmd}/NoObj/PreProc=Sys\$Output ${dir}perl.h\|")
	222	or die "$0: Can't preprocess ${dir}perl.h: $!\n";
	223	}
	224	else {
a5f75d66	225	open(CPP,"$cpp_file") or die "$0: Can't read preprocessed file $cpp_file: $!\n";
a0d0e21e	226	}
09b7f37c	227	%checkh = map { $_,1 } qw( thread bytecode byterun proto );
09b7f37c	228	$ckfunc = 0;
a0d0e21e	229	LINE: while (<CPP>) {
	230	while (/^#.vmsish\.h/i .. /^#.perl\.h/i) {
	231	while (/__VMS_PROTOTYPES__/i .. /__VMS_SEPYTOTORP__/i) {
748a9306	232	print "vms_proto>> $_" if $debug > 2;
3e3baf6d	233	if (/^\s*EXT/) { &scan_var($_); }
b9f71c63	234	else { &scan_func($_); }
09b7f37c	235	last LINE unless defined($_ = <CPP>);
a0d0e21e	236	}
748a9306	237	print "vmsish.h>> $_" if $debug > 2;
3e3baf6d	238	if (/^\s*EXT/) { &scan_var($_); }
09b7f37c	239	last LINE unless defined($_ = <CPP>);
a0d0e21e	240	}
a0d0e21e	241	while (/^#.opcode\.h/i .. /^#.perl\.h/i) {
748a9306	242	print "opcode.h>> $_" if $debug > 2;
a0d0e21e	243	if (/^OP \*\s/) { &scan_func($_); }
3e3baf6d	244	if (/^\s*EXT/) { &scan_var($_); }
4633a7c4	245	if (/^\s+OP_/) { &scan_enum($_); }
09b7f37c	246	last LINE unless defined($_ = <CPP>);
4633a7c4	247	}
09b7f37c	248	while (/^typedef enum/ .. /^\s*\}/) {
4633a7c4	249	print "global enum>> $_" if $debug > 2;
4633a7c4	250	&scan_enum($_);
09b7f37c	251	last LINE unless defined($_ = <CPP>);
a0d0e21e	252	}
09b7f37c	253	# Check for transition to new header file
	254	if (/^# \d+ "(\S+)"/) {
	255	my $spec = $1;
	256	# Pull name from library module or header filespec
	257	$spec =~ /^(\w+)$/ or $spec =~ /(\w+)\.h/i;
	258	my $name = lc $1;
	259	$ckfunc = exists $checkh{$name} ? 1 : 0;
	260	$scanname = $name if $ckfunc;
	261	print "Header file transition: ckfunc = $ckfunc for $name.h\n" if $debug > 1;
61bb5906	262	}
09b7f37c	263	if ($ckfunc) {
09b7f37c	264	print "$scanname>> $_" if $debug > 2;
3e3baf6d	265	if (/\s*^EXT/) { &scan_var($_); }
09b7f37c	266	else { &scan_func($_); }
	267	}
	268	else {
	269	print $_ if $debug > 3 && ($debug > 5 \|\| length($_));
	270	if (/^\s*EXT/) { &scan_var($_); }
a0d0e21e	271	}
a0d0e21e	272	}
a0d0e21e	273	close CPP;
b9f71c63	274
a0d0e21e	275	while (<DATA>) {
	276	next if /^#/;
	277	s/\s+#.*\n//;
4633a7c4	278	next if /^\s*$/;
a0d0e21e	279	($key,$array) = split('=',$_);
cc391245	280	if ($array eq 'vars') { $key = "PL_$key"; }
cc391245	281	else { $key = "Perl_$key"; }
748a9306	282	print "Adding $key to \%$array list\n" if $debug > 1;
a0d0e21e	283	${$array}{$key}++;
a0d0e21e	284	}
9ef4b0a6	285	if ($debugging_enabled and $isgcc) { $vars{'colors'}++ }
748a9306	286	foreach (split /\s+/, $extnames) {
	287	my($pkgname) = $_;
	288	$pkgname =~ s/::/__/g;
4633a7c4	289	$fcns{"boot_$pkgname"}++;
4633a7c4	290	print "Adding boot_$pkgname to \%fcns (for extension $_)\n" if $debug;
748a9306	291	}
a0d0e21e	292
c07a80fd	293	# If we're using VAXC, fold in the names of the constants for enums
	294	# we've seen as the type of global vars.
	295	if ($isvaxc) {
	296	foreach (keys %enums) {
	297	if (/^OP/) {
	298	$vars{$_}++ if $used_opcode_enum;
	299	next;
	300	}
	301	if (/^X/) {
	302	$vars{$_}++ if $used_expectation_enum;
	303	next;
	304	}
	305	print STDERR "Unrecognized enum constant \"$_\" ignored\n";
	306	}
	307	}
	308
a0d0e21e	309	# Eventually, we'll check against existing copies here, so we can add new
	310	# symbols to an existing options file in an upwardly-compatible manner.
	311
	312	$marord++;
748a9306	313	open(OPTBLD,">${dir}${dbgprefix}perlshr_bld.opt")
748a9306	314	or die "$0: Can't write to ${dir}${dbgprefix}perlshr_bld.opt: $!\n";
a0d0e21e	315	if ($isvax) {
	316	open(MAR,">${dir}perlshr_gbl${marord}.mar")
	317	or die "$0: Can't write to ${dir}perlshr_gbl${marord}.mar: $!\n";
748a9306	318	print MAR "\t.title perlshr_gbl$marord\n";
a0d0e21e	319	}
5e4ba136	320
	321	($ver, $sub) = $] =~ /\.(\d\d\d)(\d\d)/;
	322	$gsmatch = ($sub >= 50) ? "equal" : "lequal"; # Force an equal match for
	323	# dev, but be more forgiving
	324	# for releases
	325
	326	# Build up a major ID. Since it can only be 8 bits, we encode the version
	327	# number in the top four bits and use the bottom four for build options
	328	# that'll cause incompatibilities
	329	$ver *=16;
	330	$ver += 8 if $debugging_enabled; # If DEBUGGING is set
	331	$ver += 4 if $use_threads; # if we're threaded
	332	$ver += 2 if $use_mymalloc; # if we're using perl's malloc
	333
	334	print OPTBLD "GSMATCH=$gsmatch,$ver,$sub\n";
	335
71be2cbc	336	unless ($isgcc) {
	337	print OPTBLD "PSECT_ATTR=\$GLOBAL_RO_VARS,PIC,NOEXE,RD,NOWRT,SHR\n";
	338	print OPTBLD "PSECT_ATTR=\$GLOBAL_RW_VARS,PIC,NOEXE,RD,WRT,NOSHR\n";
	339	}
	340	foreach $var (sort (keys %vars,keys %cvars)) {
748a9306	341	if ($isvax) { print OPTBLD "UNIVERSAL=$var\n"; }
748a9306	342	else { print OPTBLD "SYMBOL_VECTOR=($var=DATA)\n"; }
4633a7c4	343	# This hack brought to you by the lack of a globaldef in gcc.
4633a7c4	344	if ($isgcc) {
a0d0e21e	345	if ($count++ > 200) { # max 254 psects/file
	346	print MAR "\t.end\n";
	347	close MAR;
	348	$marord++;
	349	open(MAR,">${dir}perlshr_gbl${marord}.mar")
	350	or die "$0: Can't write to ${dir}perlshr_gbl${marord}.mar: $!\n";
748a9306	351	print MAR "\t.title perlshr_gbl$marord\n";
a0d0e21e	352	$count = 0;
a0d0e21e	353	}
a0d0e21e	354	print MAR "\t.psect ${var},long,pic,ovr,rd,wrt,noexe,noshr\n";
	355	print MAR "\t${var}:: .blkl 1\n";
	356	}
	357	}
	358
	359	print MAR "\t.psect \$transfer_vec,pic,rd,nowrt,exe,shr\n" if ($isvax);
4633a7c4	360	foreach $func (sort keys %fcns) {
a0d0e21e	361	if ($isvax) {
	362	print MAR "\t.transfer $func\n";
	363	print MAR "\t.mask $func\n";
4633a7c4	364	print MAR "\tjmp G\^${func}+2\n";
a0d0e21e	365	}
748a9306	366	else { print OPTBLD "SYMBOL_VECTOR=($func=PROCEDURE)\n"; }
a0d0e21e	367	}
4633a7c4	368	if ($isvax) {
	369	print MAR "\t.end\n";
	370	close MAR;
	371	}
a0d0e21e	372
4633a7c4	373	open(OPTATTR,">${dir}perlshr_attr.opt")
4633a7c4	374	or die "$0: Can't write to ${dir}perlshr_attr.opt: $!\n";
71be2cbc	375	if ($isvaxc) {
	376	print OPTATTR "PSECT_ATTR=\$CHAR_STRING_CONSTANTS,PIC,SHR,NOEXE,RD,NOWRT\n";
	377	}
	378	elsif ($isgcc) {
	379	foreach $var (sort keys %cvars) {
	380	print OPTATTR "PSECT_ATTR=${var},PIC,OVR,RD,NOEXE,NOWRT,SHR\n";
	381	}
	382	foreach $var (sort keys %vars) {
	383	print OPTATTR "PSECT_ATTR=${var},PIC,OVR,RD,NOEXE,WRT,NOSHR\n";
	384	}
	385	}
	386	else {
	387	print OPTATTR "! No additional linker directives are needed when using DECC\n";
4633a7c4	388	}
a0d0e21e	389	close OPTATTR;
4633a7c4	390
748a9306	391	$incstr = 'perl,globals';
a0d0e21e	392	if ($isvax) {
a0d0e21e	393	$drvrname = "Compile_shrmars.tmp_".time;
	394	open (DRVR,">$drvrname") or die "$0: Can't write to $drvrname: $!\n";
	395	print DRVR "\$ Set NoOn\n";
	396	print DRVR "\$ Delete/NoLog/NoConfirm $drvrname;\n";
	397	print DRVR "\$ old_proc_vfy = F\$Environment(\"VERIFY_PROCEDURE\")\n";
	398	print DRVR "\$ old_img_vfy = F\$Environment(\"VERIFY_IMAGE\")\n";
748a9306	399	print DRVR "\$ MCR $^X -e \"\$ENV{'LIBPERL_RDT'} = (stat('$libperl'))[9]\"\n";
a0d0e21e	400	print DRVR "\$ Set Verify\n";
748a9306	401	print DRVR "\$ If F\$Search(\"$libperl\").eqs.\"\" Then Library/Object/Create $libperl\n";
a0d0e21e	402	do {
bbce6d69	403	push(@symfiles,"perlshr_gbl$marord");
a0d0e21e	404	print DRVR "\$ Macro/NoDebug/Object=PerlShr_Gbl${marord}$objsuffix PerlShr_Gbl$marord.Mar\n";
748a9306	405	print DRVR "\$ Library/Object/Replace/Log $libperl PerlShr_Gbl${marord}$objsuffix\n";
a0d0e21e	406	} while (--$marord);
748a9306	407	# We had to have a working miniperl to run this program; it's probably the
	408	# one we just built. It depended on LibPerl, which will be changed when
	409	# the PerlShr_Gbl* modules get inserted, so miniperl will be out of date,
	410	# and so, therefore, will all of its dependents . . .
	411	# We touch LibPerl here so it'll be back 'in date', and we won't rebuild
	412	# miniperl etc., and therefore LibPerl, the next time we invoke MM[KS].
a0d0e21e	413	print DRVR "\$ old_proc_vfy = F\$Verify(old_proc_vfy,old_img_vfy)\n";
748a9306	414	print DRVR "\$ MCR $^X -e \"utime 0, \$ENV{'LIBPERL_RDT'}, '$libperl'\"\n";
a0d0e21e	415	close DRVR;
a0d0e21e	416	}
748a9306	417
bbce6d69	418	# Initial hack to permit building of compatible shareable images for a
	419	# given version of Perl.
	420	if ($ENV{PERLSHR_USE_GSMATCH}) {
	421	my $major = int($] * 1000) & 0xFF; # range 0..255
	422	my $minor = int(($] * 1000 - $major) * 100 + 0.5) & 0xFF; # range 0..255
	423	print OPTBLD "GSMATCH=LEQUAL,$major,$minor\n";
09b7f37c	424	print OPTBLD 'CLUSTER=$$TRANSFER_VECTOR,,',
09b7f37c	425	map(",$_$objsuffix",@symfiles), "\n";
bbce6d69	426	}
36477c24	427	elsif (@symfiles) { $incstr .= ',' . join(',',@symfiles); }
748a9306	428	# Include object modules and RTLs in options file
	429	# Linker wants /Include and /Library on different lines
	430	print OPTBLD "$libperl/Include=($incstr)\n";
	431	print OPTBLD "$libperl/Library\n";
a5f75d66	432	open(RTLOPT,$rtlopt) or die "$0: Can't read options file $rtlopt: $!\n";
748a9306	433	while (<RTLOPT>) { print OPTBLD; }
	434	close RTLOPT;
	435	close OPTBLD;
	436
	437	exec "\$ \@$drvrname" if $isvax;
	438
	439
a0d0e21e	440	__END__
	441
	442	# Oddball cases, so we can keep the perl.h scan above simple
a0d0e21e	443	regkind=vars # declared in regcomp.h
	444	simple=vars # declared in regcomp.h
	445	varies=vars # declared in regcomp.h