Getting Undefined Reference to Perl on C++ -

well, first of all, sorry bad english!

i'm new linux, g++ , perl, , i'm getting problems here.

i have code in g++ calls perl .pl file return information. right now, i'm returning 1 or 0 perl .pl file tests , understand how works. problem i'm getting $make:

sathlervbn spam c # make clean;make rm -f *.o g++  -wall  -d_reentrant -d_gnu_source -ddebian -fstack-protector -fno-strict-aliasing -pipe -i/usr/local/include -d_largefile_source -d_file_offset_bits=64  -i/usr/lib/perl/5.14/core   -c -o filedir.o filedir.cpp g++  -wall  -d_reentrant -d_gnu_source -ddebian -fstack-protector -fno-strict-aliasing -pipe -i/usr/local/include -d_largefile_source -d_file_offset_bits=64  -i/usr/lib/perl/5.14/core   -c -o main.o main.cpp main.cpp: in function ‘int main(int, char**, char**)’: main.cpp:112:41: warning: deprecated conversion string constant ‘char*’ [-wwrite-strings] main.cpp:112:41: warning: deprecated conversion string constant ‘char*’ [-wwrite-strings] g++ -l/usr/lib -wall -wl,-e  -fstack-protector -l/usr/local/lib  -l/usr/lib/perl/5.14/core -    lperl -ldl -lm -lpthread -lc -lcrypt -o main filedir.o main.o main.o: in function `getinfoperl(std::string)': main.cpp:(.text+0x1a): undefined reference `perl_push_scope' main.cpp:(.text+0x33): undefined reference `perl_save_int' main.cpp:(.text+0x73): undefined reference `perl_markstack_grow' main.cpp:(.text+0xcd): undefined reference `perl_stack_grow' main.cpp:(.text+0xfa): undefined reference `perl_newsvpv' main.cpp:(.text+0x10d): undefined reference `perl_sv_2mortal' main.cpp:(.text+0x13b): undefined reference `perl_call_pv' main.cpp:(.text+0x18f): undefined reference `perl_sv_2iv_flags' main.cpp:(.text+0x1bd): undefined reference `perl_free_tmps' main.cpp:(.text+0x1ca): undefined reference `perl_pop_scope' main.o: in function `main': main.cpp:(.text+0x206): undefined reference `perl_sys_init3' main.cpp:(.text+0x20b): undefined reference `perl_alloc' main.cpp:(.text+0x21d): undefined reference `perl_construct' main.cpp:(.text+0x265): undefined reference `perl_parse' main.cpp:(.text+0x272): undefined reference `perl_run' main.cpp:(.text+0x2fd): undefined reference `perl_destruct' main.cpp:(.text+0x30a): undefined reference `perl_free' main.cpp:(.text+0x30f): undefined reference `perl_sys_term' collect2: error: ld returned 1 exit status make: *** [main] error 1 

the main.cpp code is:

#include <extern.h> #include <perl.h> #include <iostream> #include <cstdio> #include "filedir.h"  using namespace std;    perlinterpreter *my_perl;  int getinfoperl(string email){     dsp;     enter;     savetmps;     pushmark(sp);     xpushs(sv_2mortal(newsvpv(email.c_str(),0)));     putback;     call_pv("spamteste", g_scalar);     spagain;      int resultado = popi;     putback;     freetmps;     leave;      return resultado;  }      int main(int argc, char **argv, char **env) {      char *my_argv[] = { " ", "spamperl.pl" };     perl_sys_init3 (&argc, &argv, &env);      my_perl = perl_alloc();     perl_construct ( my_perl );     pl_exit_flags |= perl_exit_destruct_end;      perl_parse(my_perl, null, 2, my_argv, (char **)null);     perl_run(my_perl);      cout << "resultado " << getinfoperl("email/email.txt") << endl;      perl_destruct(my_perl);     perl_free(my_perl);      perl_sys_term();      foobar bla bla bla part code: doesn't matter. } 

here makefile:

#cc= /usr/bin/g++ cpp = g++ cppflags = -wall $(shell perl -mextutils::embed -e ccopts) #ld= /usr/bin/g++ ld = g++  lflags = -wall $(shell perl -mextutils::embed -e ldopts)  #lflags = -wall -wl,-e  -fstack-protector -l/usr/local/lib  -l/usr/lib/perl/5.14/core -lperl     -ldl -lm -lpthread -lc -lcrypt  mainobjs = filedir.o main.o  emails = main  execs = $(emails)  #regra implicita: .c.o:     $(cpp) $(cppflags) -c $<  all: emails  emails: $(emails)  main: $(mainobjs)     $(ld) -l/usr/lib $(lflags) -o $@ $(mainobjs)  clean:     rm -f *.o 

what did? i've tried installing libperl-dev package, update perl, , nothing solved. need fix this! can me?

update:

changed header main.cpp to:

#ifdef __cplusplus extern "c" { #endif #include "extern.h" #include "perl.h" #ifdef __cplusplus } #endif  #include <iostream> #include <cstdio> #include "filedir.h" 

didn't work...

the problem in makefile:

#cc= /usr/bin/g++ cpp = g++ cppflags = -wall $(shell perl -mextutils::embed -e ccopts) #ld= /usr/bin/g++ ld = g++  lflags = -wall $(shell perl -mextutils::embed -e ldopts)  #lflags = -wall -wl,-e  -fstack-protector -l/usr/local/lib  -l/usr/lib/perl/5.14/core -lperl     -ldl -lm -lpthread -lc -lcrypt  mainobjs = filedir.o main.o  emails = main  execs = $(emails)  #regra implicita: .c.o: $(cpp) $(cppflags) -c $<  all: emails  emails: $(emails)  main: $(mainobjs)     $(ld) -l/usr/lib $(lflags) -o $@ $(mainobjs)  clean:     rm -f *.o 

as can see, in line, code:

main: $(mainobjs)     $(ld) -l/usr/lib $(lflags) -o $@ $(mainobjs) 

should have $(lflags) after $(mainobjs), should be:

main: $(mainobjs)     $(ld) -l/usr/lib -o $@ $(mainobjs) $(lflags) 

now, linker working perfectly. i'm sorry, can't why necessary, i've discovered.