You should take a look at perlcall, perlapi and perlguts.

But since I was working on something similar for PLJava and PLDelphi, here's some snippets with some extra comments:

char*
EmbedPerl_call_args( char* code , char* arg1 ) {
  // dTHX enables multiple Perl interpreters for the API functions:
  dTHX ;
  // Enables the call of sub from C (handles @_ and returned values):
  dSP ;

  char *tmp , *retval ;
  SV* ret ;
  
  // Enable the call of the function from multiple native threads:
  PERL_SET_CONTEXT(PL_curinterp) ;

  // enter and save tmp to enable call to perl function (handles @_ fo
+r us):
  ENTER ;
  SAVETMPS ;

    // Enable the insertion of arguments to send to the sub call:
    PUSHMARK(SP) ;
      // add arg1 as a new SV in the arguments (@_):
      XPUSHs(sv_2mortal(newSVpv(arg1, strlen(arg1))));
    PUTBACK ;
  
    // call the sub:
    call_pv(code , G_SCALAR);

    // refresh returneds to get returned value:
    SPAGAIN ;

    // get the SV returned (SCALAR context):
    ret = POPs ;
    
    // tmp will point to the internal char* of the SCALAR, so,
    // when we clean the scalar we clean tmp, and can't return it...
    tmp = SvPV(ret , len) ;
    // ... so, we copy tmp to retval to can return the char* after cle
+an tmps:
    retval = malloc(sizeof(char) * (len+1)) ;
    Copy(tmp, retval, len, char);
    // add end of char*:
    retval[len] = '\0';
  
  // clean tmps and return to the previous state:
  FREETMPS ;
  LEAVE ;

  // the returned value:
  return retval  ;
}
[download]

You also can take a look at the sources of LibZip, at ./myldr/ and ./myldr/zlib-src/main.c to see sources of an executable that do that and for a MakeFile.PL that compile automatically your app on Linux and Windows.

Enjoy!

---

---

Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!

Titles consisting of a single word are discouraged, and in most cases are disallowed outright.

Read Where should I post X? if you're not absolutely sure you're posting in the right place.

Please read these before you post! —

• How do I compose an effective node title?
• How do I post a question effectively?
• Markup in the Monastery

Posts may use any of the Perl Monks Approved HTML tags:

a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr

You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)

	For:		Use:
	&		&
	<		&lt;
	>		&gt;
	[		&#91;
	]		&#93;

Link using PerlMonks shortcuts! What shortcuts can I use for linking?

See Writeup Formatting Tips and other pages linked from there for more info.