Makefile

all: libtowel.so
	perl towel.pl
	-@#LD_PRELOAD="`pwd`/libtowel.so" perl towel.pl

libtowel.so: towel.c
	$(CC) -shared -fPIC -o $@ $<

clean:
	rm -Rf _Inline/ libtowel.so

Makefile.win32

all: libtowel.dll
	perl towel.pl

libtowel.dll: towel.o
	-$(CC) -shared -Wl,--out-implib,libtowel.a -o libtowel.dll $<
	-REM $(CC) -shared -o $@ $<

towel.o: towel.c
	$(CC) -c $< -o $@

clean:
	-$(RM) libtowel.dll libtowel.a towel.o
	-del /Q /S _Inline

towel.c

#include "towel.h"

int h2g2() {
	return 42;
}

towel.h

#ifndef _HELLO_H
#define _HELLO_H

extern int h2g2();

#endif /* _HELLO_H */

towel.pl

#!/usr/bin/env perl

use strict;
use warnings;
use v5.16;
use File::chdir;

use Inline C => Config =>
		FORCE_BUILD => 1,
		CLEAN_AFTER_BUILD => 0,
		INC => "-I$CWD",
		LIBS => "-L$CWD -ltowel",
		ENABLE => AUTOWRAP =>;
use Inline C => 'DATA';

say h2g2();

__END__
__C__
extern int h2g2();