compilation fails when I'm embeding a Perl Interpreter in my C program

[Ioannis Mavroidis]

I'm running Perl 5.6.0 on SunOS 5.7 and I get the following compilation
error,
when I'm trying to embed a Perl interpreter in a C program.

gcc test.c -L/usr/local/lib 
/usr/local/lib/perl5/5.6.0/sun4-solaris-thread/auto/DynaLoader/DynaLoader.a
-L/usr/local/lib/perl5/5.6.0/sun4-solaris-thread/CORE -lperl -lsocket
-lnsl -ldl -lm -lposix4 -lpthread -lc -lcrypt -lsec -D_REENTRANT
-I/usr/local/include -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 
-I/usr/local/lib/perl5/5.6.0/sun4-solaris-thread/CORE
test.c: In function `perl_init':
test.c:15: `thr' undeclared (first use in this function)
test.c:15: (Each undeclared identifier is reported only once
test.c:15: for each function it appears in.)
test.c: In function `PLI_call':
test.c:30: `thr' undeclared (first use in this function)

The flags I'm passing to gcc are the output of
"perl -MExtUtils::Embed -e ccopts -e ldopts".

These are the failing lines of test.c:

      7 void perl_init () {
      8     char *args[] = { "perl", "-e", "exit;" };
      9     printf("C: Initializing Perl interpreter\n");
     10 
     11     my_perl = perl_alloc();
     12     perl_construct(my_perl);
     13 
     14     perl_parse (my_perl, NULL, 3, args, (char **)NULL);
     15     perl_eval_pv ("require 'test.pl';", TRUE);
     16 }

Can anyone see what the problem is?

Many thanks,
Yannis