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| <div class="section" id="findsdl"> |
| <span id="module:FindSDL"></span><h1>FindSDL<a class="headerlink" href="#findsdl" title="Permalink to this headline">ΒΆ</a></h1> |
| <p>Locate SDL library</p> |
| <p>This module defines</p> |
| <div class="highlight-default"><div class="highlight"><pre><span></span><span class="n">SDL_LIBRARY</span><span class="p">,</span> <span class="n">the</span> <span class="n">name</span> <span class="n">of</span> <span class="n">the</span> <span class="n">library</span> <span class="n">to</span> <span class="n">link</span> <span class="n">against</span> |
| <span class="n">SDL_FOUND</span><span class="p">,</span> <span class="k">if</span> <span class="n">false</span><span class="p">,</span> <span class="n">do</span> <span class="ow">not</span> <span class="k">try</span> <span class="n">to</span> <span class="n">link</span> <span class="n">to</span> <span class="n">SDL</span> |
| <span class="n">SDL_INCLUDE_DIR</span><span class="p">,</span> <span class="n">where</span> <span class="n">to</span> <span class="n">find</span> <span class="n">SDL</span><span class="o">.</span><span class="n">h</span> |
| <span class="n">SDL_VERSION_STRING</span><span class="p">,</span> <span class="n">human</span><span class="o">-</span><span class="n">readable</span> <span class="n">string</span> <span class="n">containing</span> <span class="n">the</span> <span class="n">version</span> <span class="n">of</span> <span class="n">SDL</span> |
| </pre></div> |
| </div> |
| <p>This module responds to the flag:</p> |
| <div class="highlight-default"><div class="highlight"><pre><span></span><span class="n">SDL_BUILDING_LIBRARY</span> |
| <span class="n">If</span> <span class="n">this</span> <span class="ow">is</span> <span class="n">defined</span><span class="p">,</span> <span class="n">then</span> <span class="n">no</span> <span class="n">SDL_main</span> <span class="n">will</span> <span class="n">be</span> <span class="n">linked</span> <span class="ow">in</span> <span class="n">because</span> |
| <span class="n">only</span> <span class="n">applications</span> <span class="n">need</span> <span class="n">main</span><span class="p">()</span><span class="o">.</span> |
| <span class="n">Otherwise</span><span class="p">,</span> <span class="n">it</span> <span class="ow">is</span> <span class="n">assumed</span> <span class="n">you</span> <span class="n">are</span> <span class="n">building</span> <span class="n">an</span> <span class="n">application</span> <span class="ow">and</span> <span class="n">this</span> |
| <span class="n">module</span> <span class="n">will</span> <span class="n">attempt</span> <span class="n">to</span> <span class="n">locate</span> <span class="ow">and</span> <span class="nb">set</span> <span class="n">the</span> <span class="n">proper</span> <span class="n">link</span> <span class="n">flags</span> |
| <span class="k">as</span> <span class="n">part</span> <span class="n">of</span> <span class="n">the</span> <span class="n">returned</span> <span class="n">SDL_LIBRARY</span> <span class="n">variable</span><span class="o">.</span> |
| </pre></div> |
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| <p>Don’t forget to include SDLmain.h and SDLmain.m your project for the |
| OS X framework based version. (Other versions link to -lSDLmain which |
| this module will try to find on your behalf.) Also for OS X, this |
| module will automatically add the -framework Cocoa on your behalf.</p> |
| <p>Additional Note: If you see an empty SDL_LIBRARY_TEMP in your |
| configuration and no SDL_LIBRARY, it means CMake did not find your SDL |
| library (SDL.dll, libsdl.so, SDL.framework, etc). Set |
| SDL_LIBRARY_TEMP to point to your SDL library, and configure again. |
| Similarly, if you see an empty SDLMAIN_LIBRARY, you should set this |
| value as appropriate. These values are used to generate the final |
| SDL_LIBRARY variable, but when these values are unset, SDL_LIBRARY |
| does not get created.</p> |
| <p>$SDLDIR is an environment variable that would correspond to the |
| ./configure –prefix=$SDLDIR used in building SDL. l.e.galup 9-20-02</p> |
| <p>Modified by Eric Wing. Added code to assist with automated building |
| by using environmental variables and providing a more |
| controlled/consistent search behavior. Added new modifications to |
| recognize OS X frameworks and additional Unix paths (FreeBSD, etc). |
| Also corrected the header search path to follow “proper” SDL |
| guidelines. Added a search for SDLmain which is needed by some |
| platforms. Added a search for threads which is needed by some |
| platforms. Added needed compile switches for MinGW.</p> |
| <p>On OSX, this will prefer the Framework version (if found) over others. |
| People will have to manually change the cache values of SDL_LIBRARY to |
| override this selection or set the CMake environment |
| CMAKE_INCLUDE_PATH to modify the search paths.</p> |
| <p>Note that the header path has changed from SDL/SDL.h to just SDL.h |
| This needed to change because “proper” SDL convention is #include |
| “SDL.h”, not <SDL/SDL.h>. This is done for portability reasons |
| because not all systems place things in SDL/ (see FreeBSD).</p> |
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