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POCompiling minimal GLEW application under Cygwin
 

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    <p>Let's consider the following program and try to compile it under Cygwin:</p> <pre><code>#include &lt;GL/glut.h&gt; int main(int argc, char** argv) { glutInit(&amp;argc, argv); glLoadIdentity(); } </code></pre> <p>It compiles and runs just fine. <code>-I/usr/include/opengl</code> seems to be terribly important.</p> <pre><code>g++ -I/usr/include/opengl -I../include/cygwin -L../lib/cygwin test.cpp -o test.exe -lglut32 -lglu32 -lglew32 -lopengl32 </code></pre> <p>Now,</p> <pre><code>#include &lt;GL/glew.h&gt; // from newest NVIDIA SDK #include &lt;GL/glut.h&gt; int main(int argc, char** argv) { glewInit(); glutInit(&amp;argc, argv); glLoadIdentity(); } </code></pre> <p>compiled by</p> <pre><code>g++ -I/usr/include/opengl -I../include/cygwin -L../lib/cygwin test.cpp -o test.exe -lglut32 -lglu32 -lglew32 -lopengl32 </code></pre> <p>fails. How to build the second application?</p> <h3>First</h3> <p>There are several ways to build glew by from NVIDIA SDK: by VS, by cygwin, by cygwin with -D_WIN32. I also tried cygwin build of original glew from source.</p> <p>VS build gives</p> <pre><code>/cygdrive/c/DOCUME~1/kelebron/LOCALS~1/Temp/ccErbecl.o:test.cpp:(.text+0xa8): undefined reference to `_glLoadIdentity' collect2: ld returned 1 exit status </code></pre> <p>cygwin builds give many</p> <pre><code>../lib/cygwin/glew32.lib(glew.o):glew.c:(.text+0x38e): undefined reference to `_glXGetProcAddress' </code></pre> <p>and cygwin with -D_WIN32 does not compile at all (I was slightly motivated by <a href="http://sourceforge.net/mailarchive/forum.php?thread_name=cd39a5a20711290045u7f1f1f15g77a148c1453d8e79%40mail.gmail.com&amp;forum_name=glew-users" rel="noreferrer">this post</a>).</p> <h3>Second</h3> <p>There seem to be two ways to link with OpenGL<br> with -L/lib/w32api<br> or with -L/usr/X11R6/lib -lX11 -lXi -lXmu</p> <p>But, the -L directives do not change anything. I've got /usr/lib/w32api/libopengl32.a, but may be missing the X11 version (/usr/X11R6/lib/libGL?). What package should I include into Cygwin? I've installed all starting with libGL (not only...).</p>
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