Mercurial > sdl-ios-xcode
view include/SDL_version.h @ 1550:31c2b8e4885e
Fixed bug #166
From the autoconf obsolete macros documentation:
Macro: AC_CANONICAL_SYSTEM
Determine the system type and set output variables to the names of the canonical system types. See section Getting the Canonical System Type, for details about the variables this macro sets.
The user is encouraged to use either AC_CANONICAL_BUILD, or AC_CANONICAL_HOST, or AC_CANONICAL_TARGET, depending on the needs. Using AC_CANONICAL_TARGET is enough to run the two other macros.
From the documentation for the canonical environments:
case $target in
i386-*-mach* | i386-*-gnu*)
obj_format=aout emulation=mach bfd_gas=yes ;;
i960-*-bout) obj_format=bout ;;
esac
Note that the above example uses $target because it's taken from a tool which can be built on some architecture ($build), run on another ($host), but yet handle data for a third architecture ($target). Such tools are usually part of a compiler suite, they generate code for a specific $target.
However $target should be meaningless for most packages. If you want to base a decision on the system where your program will be run, make sure you use the $host variable.
author | Sam Lantinga <slouken@libsdl.org> |
---|---|
date | Sun, 19 Mar 2006 05:27:22 +0000 |
parents | 67114343400d |
children | 0a53c90a37f9 44635227a939 |
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/* SDL - Simple DirectMedia Layer Copyright (C) 1997-2006 Sam Lantinga This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA Sam Lantinga slouken@libsdl.org */ /* This header defines the current SDL version */ #ifndef _SDL_version_h #define _SDL_version_h #include "SDL_stdinc.h" #include "begin_code.h" /* Set up for C function definitions, even when using C++ */ #ifdef __cplusplus extern "C" { #endif /* Printable format: "%d.%d.%d", MAJOR, MINOR, PATCHLEVEL */ #define SDL_MAJOR_VERSION 1 #define SDL_MINOR_VERSION 2 #define SDL_PATCHLEVEL 10 typedef struct SDL_version { Uint8 major; Uint8 minor; Uint8 patch; } SDL_version; /* This macro can be used to fill a version structure with the compile-time * version of the SDL library. */ #define SDL_VERSION(X) \ { \ (X)->major = SDL_MAJOR_VERSION; \ (X)->minor = SDL_MINOR_VERSION; \ (X)->patch = SDL_PATCHLEVEL; \ } /* This macro turns the version numbers into a numeric value: (1,2,3) -> (1203) This assumes that there will never be more than 100 patchlevels */ #define SDL_VERSIONNUM(X, Y, Z) \ ((X)*1000 + (Y)*100 + (Z)) /* This is the version number macro for the current SDL version */ #define SDL_COMPILEDVERSION \ SDL_VERSIONNUM(SDL_MAJOR_VERSION, SDL_MINOR_VERSION, SDL_PATCHLEVEL) /* This macro will evaluate to true if compiled with SDL at least X.Y.Z */ #define SDL_VERSION_ATLEAST(X, Y, Z) \ (SDL_COMPILEDVERSION >= SDL_VERSIONNUM(X, Y, Z)) /* This function gets the version of the dynamically linked SDL library. it should NOT be used to fill a version structure, instead you should use the SDL_Version() macro. */ extern DECLSPEC const SDL_version * SDLCALL SDL_Linked_Version(void); /* Ends C function definitions when using C++ */ #ifdef __cplusplus } #endif #include "close_code.h" #endif /* _SDL_version_h */