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Full Discussion: Symbols not found for architecture: trouble compiling with C++
Top Forums Programming Symbols not found for architecture: trouble compiling with C++ Post 302816721 by Tyler_92 on Tuesday 4th of June 2013 12:42:29 PM
Old 06-04-2013
Symbols not found for architecture: trouble compiling with C++
Hello,
I am writing a program which relies on some heavy astronomy calculations, so I am using libnova c++ astronomy libraries => libnova: libnova.
I started off with a simple program to make sure everything compiled ok (below)
Code:
//Simple example program to test Libnova C++ class libraries

#include <stdio.h>
#include <libnova/lunar.h>
#include <libnova/julian_day.h>

int main (int argc, char* argv[])
{
    double JD;
    double moonDisk;
    //Get Julian Date from System
    JD = ln_get_julian_from_sys(); //function from julian_day.c
    
    //Use JD to calculate the illuminated lunar disk percentage
    moonDisk = ln_get_lunar_disk(JD); //function from lunar.c
    return 0;
}

But when I try to compile this, using
Code:
g++ -o Astro AstroTest.cpp

I receive the following error:
Undefined symbols for architecture x86_64:
"_ln_get_julian_from_sys", referenced from:
_main in ccrtNz4O.o
"_ln_get_lunar_disk", referenced from:
_main in ccrtNz4O.o
ld: symbol(s) not found for architecture x86_64
collect2: ld returned 1 exit status

I researched this error and it seems like it is pretty general. I am using a MacbookPro OSX 10.8, and "uname -m" gives me "x86_64". And when I run
Code:
file lib/libnova.dylib

I get "Mach-O 64-bit dynamically linked shared library x86_64". I am not sure what the problem is here, any help would be very appreciated.
Thanks
 

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LEARN ABOUT OSX

locale::codes::langvar

Locale::Codes::LangVar(3pm)				 Perl Programmers Reference Guide			       Locale::Codes::LangVar(3pm)

NAME

       Locale::Codes::LangVar - standard codes for language variation identification

SYNOPSIS

	  use Locale::Codes::LangVar;

	  $lvar = code2langvar('acm');		       # $lvar gets 'Mesopotamian Arabic'
	  $code = langvar2code('Mesopotamian Arabic'); # $code gets 'acm'

	  @codes   = all_langvar_codes();
	  @names   = all_langvar_names();

DESCRIPTION

       The "Locale::Codes::LangVar" module provides access to standard codes used for identifying language variations, such as those as defined in
       the IANA language registry.

       Most of the routines take an optional additional argument which specifies the code set to use. If not specified, the default IANA language
       registry codes will be used.

SUPPORTED CODE SETS

       There are several different code sets you can use for identifying language variations. A code set may be specified using either a name, or
       a constant that is automatically exported by this module.

       For example, the two are equivalent:

	  $lvar = code2langvar('en','alpha-2');
	  $lvar = code2langvar('en',LOCALE_CODE_ALPHA_2);

       The codesets currently supported are:

       alpha
	   This is the set of alphanumeric codes from the IANA language registry, such as 'arevela' for Eastern Armenian.

	   This code set is identified with the symbol "LOCALE_LANGVAR_ALPHA".

	   This is the default code set.

ROUTINES

       code2langvar ( CODE [,CODESET] )
       langvar2code ( NAME [,CODESET] )
       langvar_code2code ( CODE ,CODESET ,CODESET2 )
       all_langvar_codes ( [CODESET] )
       all_langvar_names ( [CODESET] )
       Locale::Codes::LangVar::rename_langvar  ( CODE ,NEW_NAME [,CODESET] )
       Locale::Codes::LangVar::add_langvar  ( CODE ,NAME [,CODESET] )
       Locale::Codes::LangVar::delete_langvar  ( CODE [,CODESET] )
       Locale::Codes::LangVar::add_langvar_alias  ( NAME ,NEW_NAME )
       Locale::Codes::LangVar::delete_langvar_alias  ( NAME )
       Locale::Codes::LangVar::rename_langvar_code  ( CODE ,NEW_CODE [,CODESET] )
       Locale::Codes::LangVar::add_langvar_code_alias  ( CODE ,NEW_CODE [,CODESET] )
       Locale::Codes::LangVar::delete_langvar_code_alias  ( CODE [,CODESET] )
	   These routines are all documented in the Locale::Codes::API man page.

SEE ALSO

       Locale::Codes
	   The Locale-Codes distribution.

       Locale::Codes::API
	   The list of functions supported by this module.

       http://www.iana.org/assignments/language-subtag-registry
	   The IANA language subtag registry.

AUTHOR

       See Locale::Codes for full author history.

       Currently maintained by Sullivan Beck (sbeck@cpan.org).

COPYRIGHT

	  Copyright (c) 2011-2012 Sullivan Beck

       This module is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

perl v5.16.2							    2012-10-11					       Locale::Codes::LangVar(3pm)
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