+# Can our C compiler environment build XS files
+sub can_xs {
+ my $self = shift;
+
+ # Ensure we have the CBuilder module
+ $self->configure_requires( 'ExtUtils::CBuilder' => 0.27 );
+
+ # Do we have the configure_requires checker?
+ local $@;
+ eval "require ExtUtils::CBuilder;";
+ if ( $@ ) {
+ # They don't obey configure_requires, so it is
+ # someone old and delicate. Try to avoid hurting
+ # them by falling back to an older simpler test.
+ return $self->can_cc();
+ }
+
+ # Do we have a working C compiler
+ my $builder = ExtUtils::CBuilder->new(
+ quiet => 1,
+ );
+ unless ( $builder->have_compiler ) {
+ # No working C compiler
+ return 0;
+ }
+
+ # Write a C file representative of what XS becomes
+ require File::Temp;
+ my ( $FH, $tmpfile ) = File::Temp::tempfile(
+ "compilexs-XXXXX",
+ SUFFIX => '.c',
+ );
+ binmode $FH;
+ print $FH <<'END_C';
+#include "EXTERN.h"
+#include "perl.h"
+#include "XSUB.h"
+
+int main(int argc, char **argv) {
+ return 0;
+}
+
+int boot_sanexs() {
+ return 1;
+}
+
+END_C
+ close $FH;
+
+ # Can the C compiler access the same headers XS does
+ my @libs = ();
+ my $object = undef;
+ eval {
+ local $^W = 0;
+ $object = $builder->compile(
+ source => $tmpfile,
+ );
+ @libs = $builder->link(
+ objects => $object,
+ module_name => 'sanexs',
+ );
+ };
+ my $result = $@ ? 0 : 1;
+
+ # Clean up all the build files
+ foreach ( $tmpfile, $object, @libs ) {
+ next unless defined $_;
+ 1 while unlink;
+ }
+
+ return $result;
+}
+
+# Can we locate a (the) C compiler