Alright, I have a very simple program setup, as I am just working my way into real work with Allegro, but every time I try to draw basic primitives I get this:
[Linker error] undefined reference to `_imp__screen'
This results from:
| 1 | void init_prog( void ) |
| 2 | { |
| 3 | allegro_init(); |
| 4 | install_timer(); |
| 5 | install_keyboard(); |
| 6 | install_mouse(); |
| 7 | } |
| 8 | |
| 9 | int main( void ) |
| 10 | { |
| 11 | init_prog(); /* initialize everything */ |
| 12 | |
| 13 | set_color_depth(16); |
| 14 | set_gfx_mode(GFX_AUTODETECT, 640, 480, 0, 0 ); |
| 15 | |
| 16 | putpixel( screen, 250, 200, 5 ); /* the problem is here */ |
| 17 | |
| 18 | readkey(); |
| 19 | |
| 20 | return 0; |
| 21 | } |
| 22 | END_OF_MAIN() |
I originally had clear_to_color() instead of putpixel(), and I go the same error.
And help would be appreciated. Once I can get over this slump I think things will progress quickly. Its hard to play around a lot when you dont have any graphics!
]]>How do you link your programs? What parameters you give to the linker?
]]>Remember to include Allegro. And link using -lalleg under MinGW or DJGPP, `allegro-config --libs` under Linux. If after that you are still getting those errors, tell us your Allegro version, compiler [version] and system. The examples work? If not, it is probably you need to compile the library again.
]]>I compiled it as a static library. I'm working with Dev-C++, and my linking options are as follows:
-lalleg_s
-luser32
-lgdi32
-lcomdlg32
-ldinput
-lddraw
-ldxguid
-lwinmm
-ldsound
-lkernel32
-lole32
I was thinking I probably needed to recompile the library. Also, allegro.h is included (sorry, forgot to include that within the snippets I posted). The DX I'm using is DX8 found off the Allegro download section.
I'm working off the most recent stable version of allegro, 4.08 I THINK it was. If it wasn't obvious, I'm working of Windows (XP).
I ran several of the examples (3D boxes, camera, etc) and they seemed to work correctly.
]]>If you want to link with the static version of Allegro, you need to define ALLEGRO_STATICLINK before including the header.
Latest stable is 4.0.3, latest WIP is 4.2.0 beta 4.
]]>Wow, thats an easy fix. Thanks!
Sorry about the version, thats what I get for not checking. It is 4.0.3.
]]>