• 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
Zbychs

How to verify that library and app were compiled with same switches?

5 posts in this topic

Hi,

I have a library that can be compiled (C++) with a certain define (either -DBRAND=1 or -DBRAND=2), and I have an application that uses this library.
Both library and application have to be compiled with the same value of BRAND.

Is there a way to verify at compile/link time that libary was compiled with the same BRAND value as application?

Zbyl
0

Share this post


Link to post
Share on other sites
You could use the ## token pasting operator to rename some or more of your functions so that the linker won't find them when the define is set incorrectly. Or just use a standard #ifdef to rename one or two of them.

[url="http://msdn.microsoft.com/en-us/library/09dwwt6y%28v=vs.80%29.aspx"]http://msdn.microsof...v=vs.80%29.aspx[/url]
1

Share this post


Link to post
Share on other sites
You could use a trick like [url="http://www.boost.org/doc/libs/1_45_0/doc/html/boost_staticassert.html"]boost::statica[/url][url="http://www.boost.org/doc/libs/1_45_0/doc/html/boost_staticassert.html"]ssert[/url] to cause a compile to die due to specific compile time checks. If your library has a header with your library define then you could do

[code]
// lib.h
#define LIB_BRAND (2)

// main.cpp in your app
#define BRAND (1)
BOOST_STATIC_ASSERT( BRAND == LIB_BRAND);
[/code]
and have it properly break because the two brands aren't in fact the same.
1

Share this post


Link to post
Share on other sites
Thanks guys. Nice solutions.
Unfortunately KulSeran's solution won't work for me, since both defines have the same name. This cannot be changed.

I'll go with Adam's solution. I'd like to put it in one header common to both library and application - but for that I guess I'll need some kind of pragma to force reference for a "marker" symbol in application. Plus compiling lib with additional option -DCREATE_BRAND_MARKER to create the marek in lib.

I'll post here if I'll figure it out.

Thanks.
0

Share this post


Link to post
Share on other sites
Here's my solution. One should put it in a header included in both lib and app. Library should be compiled with COMPILING_LIBRARY defined.
It generates link-time errors (unresolved external symbol '__marker_symbol_BRAND_0') when linking library and application compiled with different options:

[code]
#if defined(COMPILING_LIBRARY)
#if (BRAND == 0)
extern "C" void _marker_symbol_BRAND_0();
#else
extern "C" void _marker_symbol_BRAND_1();
#endif
#else
#if (BRAND == 0)
#pragma comment(linker, "/include:__marker_symbol_BRAND_0")
#else
#pragma comment(linker, "/include:__marker_symbol_BRAND_1")
#endif
#endif
[/code]

Any comments? Maybe there are some side effects of using "#pragma comment?

Zbyl
0

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