From mboxrd@z Thu Jan  1 00:00:00 1970
From: Roger Mason <rmason@mun.ca>
Subject: Re: C++ code block not linked
Date: Sun, 26 Nov 2017 08:12:27 -0330
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In-Reply-To: <5A198E84.5070305@free.fr> (Thierry Banel's message of "Sat, 25
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To: emacs-orgmode@gnu.org

Hello,

Thierry Banel <tbanelwebmin@free.fr> writes:

> On 25/11/2017 15:59, Roger Mason wrote:
>> This code compiles fine on command line but org-babel can't link it.
>>
>> #+BEGIN_SRC C++ :flags "-std=c++11 -I/usr/local/include" :libs  "-L/usr/local/lib -lginac"
>> #include <iostream>
>> #include <ginac/ginac.h>
>> using namespace std;
>> using namespace GiNaC;
>>
>> int main () {
>>      symbol a("a"), b("b"), x("x"), y("y");
>>      lst eqns, vars;
>>      eqns = a*x+b*y==3, x-y==b;
>>      vars = x, y;
>>      cout << lsolve(eqns, vars) << endl;
>>       // -> {x==(3+b^2)/(b+a),y==(3-b*a)/(b+a)
>>
>> return 0;
>> }
>> #+END_SRC
>>
>> The error buffer contains many lines like this:
>>
>> /tmp//ccv5YYn1.o: In function `main':
>> C-src-1046xti.cpp:(.text+0x67): undefined reference to `GiNaC::symbol::symbol(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)'
>>
>
> I get the correct result:
>
> #+RESULTS:
> | {x==(3+b^2)*(a+b)^(-1) | y==-(-3+a*b)*(a+b)^(-1)} |
>
> I use Or mode version 9.1.1

I just upgraded to Org mode version 9.1.3 (release_9.1.3-185-g579fa1 @
/home/rmason/.emacs.d/org-git/lisp/) and I'm still getting the link
error.

Cheers,
Roger