$ cat Kbh.xs
#include "EXTERN.h"
#include "perl.h"
#include "XSUB.h"

#include "ppport.h"
#include "send_string.h"

MODULE = Kbh PACKAGE = Kbh

PROTOTYPES: DISABLE

void
send_string(s)
    const char * s

TYPEMAP: <<HERE
const char * T_PV
HERE

$ cat send_string.c
#include "send_string.h"
#include <stdio.h>
void send_string(const char* str) {
    puts(str);
}

$ cat send_string.h
void send_string(const char* str);

$ cat lib/Kbh.pm
package Kbh;
our $VERSION = '0.01';
require XSLoader;
XSLoader::load('Kbh', $VERSION);
1;

$ cat Makefile.pl
use ExtUtils::MakeMaker;
WriteMakefile (
    NAME=>'Kbh',
    VERSION_FROM =>'lib/Kbh.pm',
    OBJECT => 'Kbh.o send_string.o',
)


$ perl Makefile.pl
Generating a Unix-style Makefile
Writing Makefile for Kbh
Writing MYMETA.yml and MYMETA.json

$ make
cp Makefile.pl blib/lib/Makefile.pl
cp lib/Kbh.pm blib/lib/Kbh.pm
Running Mkbootstrap for Kbh ()
chmod 644 "Kbh.bs"
"/usr/bin/perl.exe" "/usr/lib/perl5/5.22/ExtUtils/xsubpp"  -typemap "/usr/lib/perl5/5.22/ExtUtils/typemap"  Kbh.xs > Kbh.xsc && mv Kbh.xsc Kbh.c
gcc -c   -DPERL_USE_SAFE_PUTENV -D_GNU_SOURCE -U__STRICT_ANSI__ -ggdb -O2 -pipe -Wimplicit-function-declaration -fdebug-prefix-map=/mnt/share/maint/perl.x86_64/build=/usr/src/debug/perl-5.22.4-1 -fdebug-prefix-map=/mnt/share/maint/perl.x86_64/src/perl-5.22.4=/usr/src/debug/perl-5.22.4-1 -fwrapv -fno-strict-aliasing -fstack-protector-strong -D_FORTIFY_SOURCE=2 -DUSEIMPORTLIB -O3   -DVERSION=\"0.01\" -DXS_VERSION=\"0.01\"  "-I/usr/lib/perl5/5.22/x86_64-cygwin-threads/CORE"   Kbh.c
gcc -c   -DPERL_USE_SAFE_PUTENV -D_GNU_SOURCE -U__STRICT_ANSI__ -ggdb -O2 -pipe -Wimplicit-function-declaration -fdebug-prefix-map=/mnt/share/maint/perl.x86_64/build=/usr/src/debug/perl-5.22.4-1 -fdebug-prefix-map=/mnt/share/maint/perl.x86_64/src/perl-5.22.4=/usr/src/debug/perl-5.22.4-1 -fwrapv -fno-strict-aliasing -fstack-protector-strong -D_FORTIFY_SOURCE=2 -DUSEIMPORTLIB -O3   -DVERSION=\"0.01\" -DXS_VERSION=\"0.01\"  "-I/usr/lib/perl5/5.22/x86_64-cygwin-threads/CORE"   send_string.c
rm -f blib/arch/auto/Kbh/Kbh.dll
g++  --shared  -Wl,--enable-auto-import -Wl,--export-all-symbols -Wl,--enable-auto-image-base -fstack-protector-strong Kbh.o send_string.o  -o blib/arch/auto/Kbh/Kbh.dll  \
  /usr/lib/perl5/5.22/x86_64-cygwin-threads/CORE/cygperl5_22.dll        \

chmod 755 blib/arch/auto/Kbh/Kbh.dll
"/usr/bin/perl.exe" -MExtUtils::Command::MM -e 'cp_nonempty' -- Kbh.bs blib/arch/auto/Kbh/Kbh.bs 644