# This forces PL files to create target in same directory as PL file.
# This is so that make depend always knows where to find PL derivatives.
-$origdir = cwd;
+my $origdir = cwd;
chdir dirname($0);
-$file = basename($0, '.PL');
+my $file = basename($0, '.PL');
$file .= '.com' if $^O eq 'VMS';
open OUT,">$file" or die "Can't create $file: $!";
=head1 SYNOPSIS
-B<h2xs> [B<-ACOPXcdf>] [B<-v> version] [B<-n> module_name] [B<-p> prefix] [B<-s> sub] [headerfile ... [extra_libraries]]
+B<h2xs> [B<-ACOPXacdfkmx>] [B<-F> addflags] [B<-M> fmask] [B<-n> module_name] [B<-o> tmask] [B<-p> prefix] [B<-s> subs] [B<-v> version] [headerfile ... [extra_libraries]]
B<h2xs> B<-h>
Omits creation of the F<Changes> file, and adds a HISTORY section to
the POD template.
-=item B<-F>
+=item B<-F> I<addflags>
Additional flags to specify to C preprocessor when scanning header for
function declarations. Should not be used without B<-x>.
pointer (like C<long long>), pointers to functions, or arrays. See
also the section on L<LIMITATIONS of B<-x>>.
+=item B<-b> I<version>
+
+Generates a .pm file which is backwards compatible with the specified
+perl version.
+
+For versions < 5.6.0, the changes are.
+ - no use of 'our' (uses 'use vars' instead)
+ - no 'use warnings'
+
+Specifying a compatibility version higher than the version of perl you
+are using to run h2xs will have no effect.
+
=back
=head1 EXAMPLES
my( $H2XS_VERSION ) = ' $Revision: 1.20 $ ' =~ /\$Revision:\s+([^\s]+)/;
my $TEMPLATE_VERSION = '0.01';
my @ARGS = @ARGV;
+my $compat_version = $];
use Getopt::Std;
sub usage{
warn "@_\n" if @_;
- die "h2xs [-ACOPXcdfh] [-v version] [-n module_name] [-p prefix] [-s subs] [headerfile [extra_libraries]]
+ die "h2xs [-ACOPXacdfhkmx] [-F addflags] [-M fmask] [-n module_name] [-o tmask] [-p prefix] [-s subs] [-v version] [headerfile [extra_libraries]]
version: $H2XS_VERSION
-A Omit all autoloading facilities (implies -c).
-C Omit creating the Changes file, add HISTORY heading to stub POD.
-s Create subroutines for specified macros.
-v Specify a version number for this extension.
-x Autogenerate XSUBs using C::Scan.
+ -b Specify a perl version to be backwards compatibile with
extra_libraries
are any libraries that might be needed for loading the
extension, e.g. -lm would try to link in the math library.
}
-getopts("ACF:M:OPXacdfhkmn:o:p:s:v:x") || usage;
+getopts("ACF:M:OPXacdfhkmn:o:p:s:v:xb:") || usage;
use vars qw($opt_A $opt_C $opt_F $opt_M $opt_O $opt_P $opt_X $opt_a $opt_c $opt_d
- $opt_f $opt_h $opt_k $opt_m $opt_n $opt_o $opt_p $opt_s $opt_v $opt_x);
+ $opt_f $opt_h $opt_k $opt_m $opt_n $opt_o $opt_p $opt_s $opt_v $opt_x
+ $opt_b);
usage if $opt_h;
+if( $opt_b ){
+ usage "You cannot use -b and -m at the same time.\n" if ($opt_b && $opt_m);
+ $opt_b =~ /^\d+\.\d+\.\d+/ ||
+ usage "You must provide the backwards compatibility version in X.Y.Z form. " .
+ "(i.e. 5.5.0)\n";
+ my ($maj,$min,$sub) = split(/\./,$opt_b,3);
+ $compat_version = sprintf("%d.%03d%02d",$maj,$min,$sub);
+}
+
if( $opt_v ){
$TEMPLATE_VERSION = $opt_v;
}
$" = "\n\t";
warn "Writing $ext$modpname/$modfname.pm\n";
+if ( $compat_version < 5.006 ) {
+print PM <<"END";
+package $module;
+
+use $compat_version;
+use strict;
+END
+}
+else {
print PM <<"END";
package $module;
use strict;
use warnings;
END
+}
unless( $opt_X || $opt_c || $opt_A ){
# we'll have an AUTOLOAD(), and it will have $AUTOLOAD and
}
}
+if ( $compat_version < 5.006 ) {
+ if ( $opt_X || $opt_c || $opt_A ) {
+ print PM 'use vars qw($VERSION @ISA @EXPORT @EXPORT_OK %EXPORT_TAGS);';
+ } else {
+ print PM 'use vars qw($VERSION @ISA @EXPORT @EXPORT_OK %EXPORT_TAGS $AUTOLOAD);';
+ }
+}
+
# Determine @ISA.
my $myISA = 'our @ISA = qw(Exporter'; # We seem to always want this.
$myISA .= ' DynaLoader' unless $opt_X; # no XS
$myISA .= ');';
+$myISA =~ s/^our // if $compat_version < 5.006;
+
print PM "\n$myISA\n\n";
my @exported_names = (@const_names, @fnames_no_prefix, map '$'.$_, @vdecls);
-print PM<<"END";
+my $tmp=<<"END";
# Items to export into callers namespace by default. Note: do not export
# names by default without a very good reason. Use EXPORT_OK instead.
# Do not simply export all your public functions/methods/constants.
END
+$tmp =~ s/^our //mg if $compat_version < 5.006;
+print PM $tmp;
+
if (@vdecls) {
printf PM "our(@{[ join ', ', map '$'.$_, @vdecls ]});\n\n";
}
+
+$tmp = ( $compat_version < 5.006 ? "" : "our \$AUTOLOAD;" );
print PM <<"END" unless $opt_c or $opt_X;
sub AUTOLOAD {
# This AUTOLOAD is used to 'autoload' constants from the constant()
# to the AUTOLOAD in AutoLoader.
my \$constname;
- our \$AUTOLOAD;
+ $tmp
(\$constname = \$AUTOLOAD) =~ s/.*:://;
croak "&$module::constant not defined" if \$constname eq 'constant';
my \$val = constant(\$constname, \@_ ? \$_[0] : 0);
my $revhist = '';
$revhist = <<EOT if $opt_C;
-
-=head1 HISTORY
-
-=over 8
-
-=item $TEMPLATE_VERSION
-
-Original version; created by h2xs $H2XS_VERSION with options
-
- @ARGS
-
-=back
-
+#
+#=head1 HISTORY
+#
+#=over 8
+#
+#=item $TEMPLATE_VERSION
+#
+#Original version; created by h2xs $H2XS_VERSION with options
+#
+# @ARGS
+#
+#=back
+#
EOT
my $exp_doc = <<EOD;
-
-=head2 EXPORT
-
-None by default.
-
+#
+#=head2 EXPORT
+#
+#None by default.
+#
EOD
if (@const_names and not $opt_P) {
$exp_doc .= <<EOD;
-=head2 Exportable constants
-
- @{[join "\n ", @const_names]}
-
+#=head2 Exportable constants
+#
+# @{[join "\n ", @const_names]}
+#
EOD
}
if (defined $fdecls and @$fdecls and not $opt_P) {
$exp_doc .= <<EOD;
-=head2 Exportable functions
-
+#=head2 Exportable functions
+#
EOD
- $exp_doc .= <<EOD if $opt_p;
-When accessing these functions from Perl, prefix C<$opt_p> should be removed.
-
+# $exp_doc .= <<EOD if $opt_p;
+#When accessing these functions from Perl, prefix C<$opt_p> should be removed.
+#
EOD
$exp_doc .= <<EOD;
- @{[join "\n ", @known_fnames{@fnames}]}
-
+# @{[join "\n ", @known_fnames{@fnames}]}
+#
EOD
}
#unedited.
#
#Blah blah blah.
-#$exp_doc$revhist
+$exp_doc$revhist
#=head1 AUTHOR
#
#$author, $email