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# You may distribute under the terms of either the GNU General Public License
# or the Artistic License (the same terms as Perl itself)
#
# (C) Paul Evans, 2022 -- leonerd@leonerd.org.uk
package Future::AsyncAwait::ExtensionBuilder 0.66;
use v5.14;
use warnings;
=head1 NAME
C<Future::AsyncAwait::ExtensionBuilder> - build-time support for extensions to C<Future::AsyncAwait>
=head1 SYNOPSIS
In F<Build.PL>:
use Future::AsyncAwait::ExtensionBuilder;
my $build = Module::Build->new(
...,
configure_requires => {
...
'Future::AsyncAwait::ExtensionBuilder' => 0,
}
);
Future::AsyncAwait::ExtensionBuilder->extend_module_build( $build );
...
=head1 DESCRIPTION
This module provides a build-time helper to assist authors writing XS modules
that provide extensions to L<Future::AsyncAwait>. It prepares a
L<Module::Build>-using distribution to be able to make use of the
C<Future::AsyncAwait> extension API.
=cut
require Future::AsyncAwait::ExtensionBuilder_data;
=head1 FUNCTIONS
=cut
=head2 write_AsyncAwait_h
Future::AsyncAwait::ExtensionBuilder->write_AsyncAwait_h
Writes the F<AsyncAwait.h> file to the current working directory. To cause
the compiler to actually find this file, see L</extra_compiler_flags>.
=cut
sub write_AsyncAwait_h
{
shift;
open my $out, ">", "AsyncAwait.h" or
die "Cannot open AsyncAwait.h for writing - $!\n";
$out->print( Future::AsyncAwait::ExtensionBuilder_data->ASYNCAWAIT_H );
}
=head2 extra_compiler_flags
@flags = Future::AsyncAwait::ExtensionBuilder->extra_compiler_flags
Returns a list of extra flags that the build scripts should add to the
compiler invocation. This enables the C compiler to find the
F<AsyncAwait.h> file.
=cut
sub extra_compiler_flags
{
shift;
return "-I.";
}
=head2 extend_module_build
Future::AsyncAwait::ExtensionBuilder->extend_module_build( $build )
A convenient shortcut for performing all the tasks necessary to make a
L<Module::Build>-based distribution use the helper.
=cut
sub extend_module_build
{
my $self = shift;
my ( $build ) = @_;
eval { $self->write_AsyncAwait_h } or do {
warn $@;
return;
};
# preserve existing flags
my @flags = @{ $build->extra_compiler_flags };
push @flags, $self->extra_compiler_flags;
$build->extra_compiler_flags( @flags );
}
=head1 AUTHOR
Paul Evans <leonerd@leonerd.org.uk>
=cut
0x55AA;
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