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Editorial Team
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Asked: 2026-05-31T09:25:09+00:00

I want to use CGL or NSOpenGL to create an OpenGL window without using

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I want to use CGL or NSOpenGL to create an OpenGL window without using XCode (compile with command line gcc). I am developing something that is cross platform, and I’d like to keep the code divergence to a minimum if I can! My codebase is fully C++ at the moment. Is this at all possible? I am new to OSX and I haven’t touched objective C. I looked through the developer docs and grabbed some example files. They are all using xcode. I successfully compiled the source and linked with the right framework, but the whole app bundle, xib, and info.plist thing seems a bit over the top.

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  1. Editorial Team

    Both fltk and SDL should have enough AGL/CGL code. I’ve built and run cmdline GL apps on OS X with fltk-1.3.0. It uses the AGL sub-system however, which is deprecated. SDL uses CGL and NSOpenGL for its Quartz video layer: ./src/video/quartz

    Use the obj-c flags for the compiler, if you need to build a src.m, and let the native g++, llvm-g++, clang++, or whatever, take care of the linking. You might need to add -framework CGL -framework OpenGL as well as ApplicationServices and Cocoa. A lot of the answer depends on what you mean by ‘code divergence’.

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