Allows an extension to be created for a header even if that header is
not found in standard include directories.
+=item B<-g>, B<--global>
+
+Include code for safely storing static data in the .xs file.
+Extensions that do no make use of static data can ignore this option.
+
=item B<-h>, B<-?>, B<--help>
Print the usage, help and version for this h2xs and exit.
-d, --debugging Turn on debugging messages.
-f, --force Force creation of the extension even if the C header
does not exist.
+ -g, --global Include code for safely storing static data in the .xs file.
-h, -?, --help Display this help message
-k, --omit-const-func Omit 'const' attribute on function arguments
(used with -x).
$opt_c,
$opt_d,
$opt_f,
+ $opt_g,
$opt_h,
$opt_k,
$opt_m,
'omit-constant|c' => \$opt_c,
'debugging|d' => \$opt_d,
'force|f' => \$opt_f,
+ 'global|g' => \$opt_g,
'help|h|?' => \$opt_h,
'omit-const-func|k' => \$opt_k,
'gen-tied-var|m' => \$opt_m,
my @vdecls;
if( ! $opt_X ){ # use XS, unless it was disabled
+ open(COMPAT, ">compat.h") || die "Can't create $ext$modpname/compat.h: $!\n";
+ warn "Writing $ext$modpname/compat.h\n";
+ print COMPAT <<EOM, <<'EOM';
+/* WARNING: This file has been autogenerated by h2xs $H2XS_VERSION */
+
+EOM
+
+
+#ifndef PERL_VERSION
+
+# include "patchlevel.h"
+# define PERL_REVISION 5
+# define PERL_VERSION PATCHLEVEL
+# define PERL_SUBVERSION SUBVERSION
+
+#endif /* PERL_VERSION */
+
+
+
+/*
+ * This file is taken from perl.h & modified slightly to make it backward
+ * comapable with older versions of Perl.
+ *
+ */
+
+#if PERL_REVISION == 5 && \
+ (PERL_VERSION < 7 || (PERL_VERSION == 7 && PERL_SUBVERSION < 2 ))
+
+/*
+ * Boilerplate macros for initializing and accessing interpreter-local
+ * data from C. All statics in extensions should be reworked to use
+ * this, if you want to make the extension thread-safe. See ext/re/re.xs
+ * for an example of the use of these macros.
+ *
+ * Code that uses these macros is responsible for the following:
+ * 1. #define MY_CXT_KEY to a unique string, e.g. "DynaLoader_guts"
+ * 2. Declare a typedef named my_cxt_t that is a structure that contains
+ * all the data that needs to be interpreter-local.
+ * 3. Use the START_MY_CXT macro after the declaration of my_cxt_t.
+ * 4. Use the MY_CXT_INIT macro such that it is called exactly once
+ * (typically put in the BOOT: section).
+ * 5. Use the members of the my_cxt_t structure everywhere as
+ * MY_CXT.member.
+ * 6. Use the dMY_CXT macro (a declaration) in all the functions that
+ * access MY_CXT.
+ */
+
+#if defined(MULTIPLICITY) || defined(PERL_OBJECT) || \
+ defined(PERL_CAPI) || defined(PERL_IMPLICIT_CONTEXT)
+
+/* This must appear in all extensions that define a my_cxt_t structure,
+ * right after the definition (i.e. at file scope). The non-threads
+ * case below uses it to declare the data as static. */
+#define START_MY_CXT
+
+#if PERL_REVISION == 5 && \
+ (PERL_VERSION < 4 || (PERL_VERSION == 4 && PERL_SUBVERSION < 68 ))
+/* Fetches the SV that keeps the per-interpreter data. */
+#define dMY_CXT_SV \
+ SV *my_cxt_sv = perl_get_sv(MY_CXT_KEY, FALSE)
+#else /* >= perl5.004_68 */
+#define dMY_CXT_SV \
+ SV *my_cxt_sv = *hv_fetch(PL_modglobal, MY_CXT_KEY, \
+ sizeof(MY_CXT_KEY)-1, TRUE)
+#endif /* < perl5.004_68 */
+
+/* This declaration should be used within all functions that use the
+ * interpreter-local data. */
+#define dMY_CXT \
+ dMY_CXT_SV; \
+ my_cxt_t *my_cxtp = (my_cxt_t*)SvUV(my_cxt_sv)
+
+/* Creates and zeroes the per-interpreter data.
+ * (We allocate my_cxtp in a Perl SV so that it will be released when
+ * the interpreter goes away.) */
+#define MY_CXT_INIT \
+ dMY_CXT_SV; \
+ /* newSV() allocates one more than needed */ \
+ my_cxt_t *my_cxtp = (my_cxt_t*)SvPVX(newSV(sizeof(my_cxt_t)-1));\
+ Zero(my_cxtp, 1, my_cxt_t); \
+ sv_setuv(my_cxt_sv, (UV)my_cxtp)
+
+/* This macro must be used to access members of the my_cxt_t structure.
+ * e.g. MYCXT.some_data */
+#define MY_CXT (*my_cxtp)
+
+/* Judicious use of these macros can reduce the number of times dMY_CXT
+ * is used. Use is similar to pTHX, aTHX etc. */
+#define pMY_CXT my_cxt_t *my_cxtp
+#define pMY_CXT_ pMY_CXT,
+#define _pMY_CXT ,pMY_CXT
+#define aMY_CXT my_cxtp
+#define aMY_CXT_ aMY_CXT,
+#define _aMY_CXT ,aMY_CXT
+
+#else /* single interpreter */
+
+#ifndef NOOP
+# define NOOP (void)0
+#endif
+
+#ifdef HASATTRIBUTE
+# define PERL_UNUSED_DECL __attribute__((unused))
+#else
+# define PERL_UNUSED_DECL
+#endif
+
+#ifndef dNOOP
+# define dNOOP extern int Perl___notused PERL_UNUSED_DECL
+#endif
+
+#define START_MY_CXT static my_cxt_t my_cxt;
+#define dMY_CXT_SV dNOOP
+#define dMY_CXT dNOOP
+#define MY_CXT_INIT NOOP
+#define MY_CXT my_cxt
+
+#define pMY_CXT void
+#define pMY_CXT_
+#define _pMY_CXT
+#define aMY_CXT
+#define aMY_CXT_
+#define _aMY_CXT
+
+#endif
+
+#endif /* perl < 5.7.2 */
+
+/* End of file compat.h */
+
+EOM
+ close COMPAT ;
+
open(XS, ">$modfname.xs") || die "Can't create $ext$modpname/$modfname.xs: $!\n";
if ($opt_x) {
require Config; # Run-time directive
my ($email,$author);
eval {
- my $user;
- ($user,$author) = (getpwuid($>))[0,6];
- $author =~ s/,.*$//; # in case of sub fields
- my $domain = $Config{'mydomain'};
- $domain =~ s/^\.//;
- $email = "$user\@$domain";
+ my $username;
+ ($username,$author) = (getpwuid($>))[0,6];
+ if (defined $username && defined $author) {
+ $author =~ s/,.*$//; # in case of sub fields
+ my $domain = $Config{'mydomain'};
+ $domain =~ s/^\.//;
+ $email = "$username\@$domain";
+ }
};
$author ||= "A. U. Thor";
#include "EXTERN.h"
#include "perl.h"
#include "XSUB.h"
+#include "compat.h"
END
if( @path_h ){
print XS "\n";
}
+print XS <<"END" if $opt_g;
+
+/* Global Data */
+
+#define MY_CXT_KEY "${module}::_guts" XS_VERSION
+
+typedef struct {
+ /* Put Global Data in here */
+ int dummy; /* you can access this elsewhere as MY_CXT.dummy */
+} my_cxt_t;
+
+START_MY_CXT
+
+END
+
my %pointer_typedefs;
my %struct_typedefs;
# XS declaration:
print XS "INCLUDE: $constsfname.xs\n" unless $opt_c;
+print XS <<"END" if $opt_g;
+
+BOOT:
+{
+ MY_CXT_INIT;
+ /* If any of the fields in the my_cxt_t struct need
+ to be initialised, do it here.
+ */
+}
+
+END
+
foreach (sort keys %const_xsub) {
print XS <<"END";
char *