• Announcements

    • khawk

      Download the Game Design and Indie Game Marketing Freebook   07/19/17

      GameDev.net and CRC Press have teamed up to bring a free ebook of content curated from top titles published by CRC Press. The freebook, Practices of Game Design & Indie Game Marketing, includes chapters from The Art of Game Design: A Book of Lenses, A Practical Guide to Indie Game Marketing, and An Architectural Approach to Level Design. The GameDev.net FreeBook is relevant to game designers, developers, and those interested in learning more about the challenges in game development. We know game development can be a tough discipline and business, so we picked several chapters from CRC Press titles that we thought would be of interest to you, the GameDev.net audience, in your journey to design, develop, and market your next game. The free ebook is available through CRC Press by clicking here. The Curated Books The Art of Game Design: A Book of Lenses, Second Edition, by Jesse Schell Presents 100+ sets of questions, or different lenses, for viewing a game’s design, encompassing diverse fields such as psychology, architecture, music, film, software engineering, theme park design, mathematics, anthropology, and more. Written by one of the world's top game designers, this book describes the deepest and most fundamental principles of game design, demonstrating how tactics used in board, card, and athletic games also work in video games. It provides practical instruction on creating world-class games that will be played again and again. View it here. A Practical Guide to Indie Game Marketing, by Joel Dreskin Marketing is an essential but too frequently overlooked or minimized component of the release plan for indie games. A Practical Guide to Indie Game Marketing provides you with the tools needed to build visibility and sell your indie games. With special focus on those developers with small budgets and limited staff and resources, this book is packed with tangible recommendations and techniques that you can put to use immediately. As a seasoned professional of the indie game arena, author Joel Dreskin gives you insight into practical, real-world experiences of marketing numerous successful games and also provides stories of the failures. View it here. An Architectural Approach to Level Design This is one of the first books to integrate architectural and spatial design theory with the field of level design. The book presents architectural techniques and theories for level designers to use in their own work. It connects architecture and level design in different ways that address the practical elements of how designers construct space and the experiential elements of how and why humans interact with this space. Throughout the text, readers learn skills for spatial layout, evoking emotion through gamespaces, and creating better levels through architectural theory. View it here. Learn more and download the ebook by clicking here. Did you know? GameDev.net and CRC Press also recently teamed up to bring GDNet+ Members up to a 20% discount on all CRC Press books. Learn more about this and other benefits here.
Sign in to follow this  
Followers 0

Linking Allegro troubles

5 posts in this topic

Hello, can somebody please help me or link me to a tutorial for my problem. i have looked online foe about an hour and couldn't finda anything. I am trying to link allegro on ubuntu 12.04 (its 32-bit not sure if that matters (probably doesn't)) on the Code::Blocks IDE. when i put a sample project from the internet in :

#include </usr/include/allegro.h> //the /usr/include/allegro.h is where allegro is on my hardrive.

int main()
//Initialize Allegro

//Set the resolution to 640 x 480 with SAFE autodetection.
set_gfx_mode(GFX_SAFE, 640, 480, 0, 0);

//Install the keyboard handler

//Print your welcome message to the screen
textout(screen, font, "Hello Dream.In.Code! This is my first Allegro Program", 1, 1, 10);
textout(screen, font, "Press ESCape to quit.", 1, 12, 11);

//Loop until escape is pressed
while(! key[KEY_ESC])

//Exit program
return 0;


i get these errors:

/usr/include/allegro/alcompat.h|157|error: undefined reference to '_textmode'|
/usr/include/allegro/alcompat.h|157|error: undefined reference to 'textout_ex'|
/home/matt/C++Crap/Allegro /main.cpp|6|error: undefined reference to '_install_allegro_version_check'|
/home/matt/C++Crap/Allegro /main.cpp|9|error: undefined reference to 'set_gfx_mode'|
/home/matt/C++Crap/Allegro /main.cpp|12|error: undefined reference to 'install_keyboard'|
/home/matt/C++Crap/Allegro /main.cpp|15|error: undefined reference to 'font'|
/home/matt/C++Crap/Allegro /main.cpp|15|error: undefined reference to 'screen'|
/home/matt/C++Crap/Allegro /main.cpp|16|error: undefined reference to 'font'|
/home/matt/C++Crap/Allegro /main.cpp|16|error: undefined reference to 'screen'|
/home/matt/C++Crap/Allegro /main.cpp|20|error: undefined reference to 'poll_keyboard'|
/home/matt/C++Crap/Allegro /main.cpp|19|error: undefined reference to 'key'|
/home/matt/C++Crap/Allegro /main.cpp|23|error: undefined reference to 'allegro_exit'|
||=== Build finished: 12 errors, 0 warnings ===|

please help me!!!

Share this post

Link to post
Share on other sites
When you have linker problems like this, you need to post the command line you are using. Source snippets don't help in this case. Otherwise, we can only just guess.

Share this post

Link to post
Share on other sites
The problem is that i dont know what to link. i put the code in because i thought it might help show what i need to link.

Share this post

Link to post
Share on other sites
I remember having problems with Code::blocks as well with allegro, but that just may be my memory.
When I worked with allegro, I used Dev-C++. There's another post here in the forum, I'll just quote what another member said:

[quote][size=1]in Dev-C++ go to the Tools menu and click Check for updates/Packages. Select a devpak server from the drop down menu and click Check for updates. You'll see a list of packages that you can download, find Allegro and check it and download it.[/size][/quote]

So that's quite easy.

Then again..

[quote][url="http://www.jasonbadams.net/20081218/why-you-shouldnt-use-dev-c/"]You shouldn't use Dev-C++[/url]. It's very old, extremely buggy, and will hinder the process of learning to program.[/quote] Edited by theo2005

Share this post

Link to post
Share on other sites
All of those missing symbols are from allegro, so you need to link with whichever version of the library you have. Assuming you are using GCC to compile, then the library should be named something like liballegro.a or some such.

Share this post

Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
Sign in to follow this  
Followers 0