Checking For X11 Header Files C
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G++ ac.C bc.C file3.C -o my-program-name See gcc(1) Linux and Unix man page for more information. This entry is 7 of 13 in the Linux GNU/GCC Compilers Tutorial series. Visual C++ and the Windows Header Files. Microsoft Visual C++ includes copies of the Windows header files that were current at the time Visual C++ was released. Therefore, if you install updated header files from an SDK, you may end up with multiple versions of the Windows header files on your computer.
Installing OpenGL You need to install an environment on your hardware where you can compile and run OpenGL programs. OpenGL is supported on most modern operating systems, but how to compile and link programs varies greatly. The description below assumes that you already have a compilation environment set up. Before asking for help, look at the to localize the problem rather than asking a meaningless question like It doesn't work. Linux OpenGL support is very easy to enable on current Linux distributions.
For distributions derived from RedHat Linux, the libraries and header files are installed using the command yum install freeglut-devel Since GLUT depends on OpenGL and a number of other libraries, installing GLUT will trigger the dependencies needed to install everything else. For distributions derived from Debian such as Ubuntu, the installation command is apt-get install freeglut3-dev To compile and link your program on Ubuntu 14 based distros you need to explicitly grab every library using gcc -o foo foo.c -lglut -lGLU -lGL -lm I recommend that you use this full version even if not required on your system.
Older distributions may put the files in /usr/X11R6, in which case you need to add -I and -L flags to pick up the header files and libraries. Once installed, run the glxinfo program and look for direct rendering in the output. If the result is YES, then hardware support for OpenGL is working. If it is NO, some things are done in software and you may take a performance hit. Depending on your hardware, you may want to work on your X server.
Specifically, the nVidia and AMD/ATI web sites contains updated drivers that result in improved performance over the stock Xorg drivers. The compiz window manager (which is an OpenGL window manager) makes applications which use glutIdleFunc() run jerky unless you enable VSync. This seems to be an issue especially with newer Ubuntu installs. OS/X The OS/X Darwin environment is based on OpenGL. Therefore any compilation environment for OS/X should already support compiling OpenGL programs.
To compile and link your program using the Apple SDK requires gcc -o foo foo.c -framework GLUT -framework OpenGL Note that under OS/X, the GLUT header files are in the subdirectory GLUT rather than the GL subdirectory. The following code works on OSX and Linux #ifdef __APPLE__ #include #else #include #endif On recent versions of OSX, you will get many warnings indicating that GLUT is deprecated. You can suppress these spurious warnings using the compiler flag -Wno-deprecated-declarations Windows Various Windows versions support OpenGL natively, but graphics card manufacturers often replace the native Windows OpenGL libraries with their own libraries that support specific features of their hardware. Since most Windows environments do not contain a native compilation suite, installing the necessary header files and libraries differs depending on the compiler used. You may also need to install. Windows: MinGW If you don't have a compiliation environment on Windows, the path of least resistance is to install MinGW which provides the gcc and g++ compilers for Windows.
Download and install Accept the default install location C: MinGW and install mingw32-base, mingw32-gcc-g++ and msys-base. After the installation is completed, change directories to C: MinGW bin and rename mingw32-make.exe to make.exe to avoid having to type mingw32-make every time you want to use make. You should also add C: MinGW bin to the beginning of your PATH.
Finally, install GLUT by unzipping into C: MinGW. It will provide include GL glut.h and lib libglut32cu.a needed to use GLUT. It also provides bin glut32.dll. To find glut32.dll at run time it must be in the PATH, so including C: MinGW bin in the PATH is critical. Note that my version of GLUT has been patched to provide glWindowPos2i which otherwise would not be available on Windows systems which support OpenGL version 1.1. To compile and link foo.c under MinGW you need gcc -Wall -ofoo foo.c -lglut32cu -lglu32 -lopengl32 Note that my makefiles assumes that you have the MinGW environment. Windows: MinGW and GLEW In order to use more advanced features in OpenGL like shaders and frame buffers, you need to get around the libraries provided by Microsoft, and use the vendor supplied libraries instead.