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Opengl programs won't compile (undefined reference)

 
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arrow



Joined: 05 Jul 2007
Posts: 6
PostPosted: Thu Jul 05, 2007 9:56 am    Post subject: Opengl programs won't compile (undefined reference) Reply with quote
Hi, I followed the guide on how to install derelict.
But when I try to compile anything is shows this:

Code:

/tmp/ccd5ZAZu.o: In function `_Dmain':
der.d:(.text+0x34): undefined reference to `_D8derelict6opengl2gl10DerelictGL4loadFAaZv'
/tmp/ccd5ZAZu.o:(.data+0x60): undefined reference to `_D8derelict6opengl2gl12__ModuleInfoZ'
collect2: ld returned 1 exit status
Compilation failed.


What I tried to compile was really nothing:
Code:

import derelict.opengl.gl;

void main()
{
    DerelictGL.load();

    // now you can call OpenGL functions
}


My system:
Core 2 duo amd62 | gentoo linux | gcc 4.1.2 with "d" use-flag (gentoo way)
(I used the install script provided)
Please help Smile

Last edited by arrow on Fri Jul 06, 2007 7:30 pm; edited 3 times in total
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Zweistein



Joined: 21 Mar 2007
Posts: 19
PostPosted: Thu Jul 05, 2007 2:37 pm    Post subject: Reply with quote
Hi,

With what Tool do you compile and how does it lok like? DMD? Rebuild? Bud?
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Joined: 05 Jul 2007
Posts: 6
PostPosted: Thu Jul 05, 2007 2:48 pm    Post subject: Reply with quote
Zweistein wrote:
Hi,

With what Tool do you compile and how does it lok like? DMD? Rebuild? Bud?


I just followed the howto again and it worked now Very Happy
Must have written something wrong before.
Thanks for your time anyway.
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arrow



Joined: 05 Jul 2007
Posts: 6
PostPosted: Thu Jul 05, 2007 7:58 pm    Post subject: Reply with quote
I have a new problem now.
When I'm doing:
Code:
import derelict.opengl.gl

It will show me "undefined reference" errors.

However,
Code:
import derelict.sdl.sdl

works.

I'm compiling with:
build -L-ldl -op -I/usr/local/d/DerelictSDL -I/usr/local/d/DerelictGL -I/usr/local/d/DerelictUtil "path/to/file.d"
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aldacron



Joined: 05 May 2004
Posts: 1322
Location: Seoul, South Korea
PostPosted: Fri Jul 06, 2007 1:17 am    Post subject: Reply with quote
arrow wrote:
I have a new problem now.
When I'm doing:
Code:
import derelict.opengl.gl

It will show me "undefined reference" errors.


Can't help you if we don't know what the errors are. Please post them here. Also, let us know which version of DMD or GDC you are using.

Quote:

I'm compiling with:
build -L-ldl -op -I/usr/local/d/DerelictSDL -I/usr/local/d/DerelictGL -I/usr/local/d/DerelictUtil "path/to/file.d"


FYI, you can shorten down that command line by running install.d and copying all of the derelict modules into a single 'derelict' source tree. For example:

dmd -run install.d /usr/local/d/import

This will create a /usr/local/d/import/derelict directory, with all of the modules in the appropriate place. Then the command line becomes:

build -L-ldl -op -I/usr/local/d/import path/to/file.d
_________________
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arrow



Joined: 05 Jul 2007
Posts: 6
PostPosted: Fri Jul 06, 2007 8:56 am    Post subject: Reply with quote
Sorry double..

Last edited by arrow on Fri Jul 06, 2007 9:00 am; edited 1 time in total
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Joined: 05 Jul 2007
Posts: 6
PostPosted: Fri Jul 06, 2007 8:58 am    Post subject: Reply with quote
I made the path smaller and now it looks like this:
Code:

build -O -L-ldl -op -I/usr/local/d sdl.d
/usr/local/d/derelict/opengl/gl.o: In function `_D8derelict6opengl2gl7loadAllFC8derelict4util6loader9SharedLibZv':
gl.d:(.text+0x11): undefined reference to `loadPlatformGL'
/usr/local/d/derelict/opengl/gl.o: In function `_D8derelict6opengl2gl10DerelictGL15hasValidContextFZb':
gl.d:(.text+0x122): undefined reference to `glXGetCurrentContext'
/usr/local/d/derelict/opengl/gl.o: In function `_D8derelict6opengl2gl10DerelictGL17getCurrentContextFZT8derelict6opengl3glx10GLXContext':
gl.d:(.text+0x144): undefined reference to `glXGetCurrentContext'
/usr/local/d/derelict/opengl/gl.o:(.data+0x268): undefined reference to `_D8derelict6opengl3glx12__ModuleInfoZ'
collect2: ld returned 1 exit status


And sdl.d looks like this:
Code:

import derelict.opengl.gl;
int main() {
   return 0;
}



I' using gdc (latest I think, how can I check? (gcc: 4.1.2) with bud
System: amd64 gentoo
And SDL+opengl works with c++
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Joined: 05 Jul 2007
Posts: 6
PostPosted: Fri Jul 06, 2007 7:09 pm    Post subject: Reply with quote
I installed rebuild instead of bud and now it compiles without any errors!

EDIT:..But it was segfaulting while running it Sad
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