/*! @page compile Compiling GLFW @tableofcontents This is about compiling the GLFW library itself. For information on how to build programs that use GLFW, see the @ref build guide. @section compile_deps Dependencies To compile GLFW and the accompanying example programs, you will need **CMake**, which will generate the project files or makefiles for your particular development environment. If you are on a Unix-like system such as Linux or FreeBSD or have a package system like Fink, MacPorts, Cygwin or Homebrew, you can simply install its CMake package. If not, you can get installers for Windows and OS X from the [CMake website](http://www.cmake.org/). Additional dependencies are listed below. @subsection compile_deps_msvc Dependencies using Visual C++ on Windows The Microsoft Platform SDK that is installed along with Visual C++ contains all the necessary headers, link libraries and tools except for CMake. @subsection compile_deps_mingw Dependencies with MinGW or MinGW-w64 on Windows Both the MinGW and the MinGW-w64 packages contain all the necessary headers, link libraries and tools except for CMake. @subsection compile_deps_mingw_cross Dependencies using MinGW or MinGW-w64 cross-compilation Both Cygwin and many Linux distributions have MinGW or MinGW-w64 packages. For example, Cygwin has the `mingw64-i686-gcc` and `mingw64-x86_64-gcc` packages for 32- and 64-bit version of MinGW-w64, while Debian GNU/Linux and derivatives like Ubuntu have the `mingw-w64` package for both. GLFW has CMake toolchain files in the `CMake/` directory that allow for easy cross-compilation of Windows binaries. To use these files you need to add a special parameter when generating the project files or makefiles: cmake -DCMAKE_TOOLCHAIN_FILE= . The exact toolchain file to use depends on the prefix used by the MinGW or MinGW-w64 binaries on your system. You can usually see this in the /usr directory. For example, both the Debian/Ubuntu and Cygwin MinGW-w64 packages have `/usr/x86_64-w64-mingw32` for the 64-bit compilers, so the correct invocation would be: cmake -DCMAKE_TOOLCHAIN_FILE=CMake/x86_64-w64-mingw32.cmake . For more details see the article [CMake Cross Compiling](http://www.paraview.org/Wiki/CMake_Cross_Compiling) on the CMake wiki. @subsection compile_deps_xcode Dependencies using Xcode on OS X Xcode contains all necessary tools except for CMake. The necessary headers and libraries are included in the core OS frameworks. Xcode can be downloaded from the Mac App Store or from the ADC Member Center. @subsection compile_deps_x11 Dependencies using Linux and X11 To compile GLFW for X11, you need to have the X11 and OpenGL header packages installed, as well as the basic development tools like GCC and make. For example, on Ubuntu and other distributions based on Debian GNU/Linux, you need to install the `xorg-dev` and `libglu1-mesa-dev` packages. The former pulls in all X.org header packages and the latter pulls in the Mesa OpenGL and GLU packages. GLFW itself doesn't need or use GLU, but some of the examples do. Note that using header files and libraries from Mesa during compilation *will not* tie your binaries to the Mesa implementation of OpenGL. @section compile_cmake Generating files with CMake Once you have all necessary dependencies it is time to generate the project files or makefiles for your development environment. CMake needs to know two paths for this: the path to the source directory and the target path for the generated files and compiled binaries. If these are the same, it is called an in-tree build, otherwise it is called an out-of-tree build. One of several advantages of out-of-tree builds is that you can generate files and compile for different development environments using a single source tree. @subsection compile_cmake_cli Generating files with the CMake command-line tool To make an in-tree build, enter the root directory of the GLFW source tree and run CMake. The current directory is used as target path, while the path provided as an argument is used to find the source tree. cd cmake . To make an out-of-tree build, make another directory, enter it and run CMake with the (relative or absolute) path to the root of the source tree as an argument. cd mkdir build cd build cmake .. @subsection compile_cmake_gui Generating files with the CMake GUI If you are using the GUI version, choose the root of the GLFW source tree as source location and the same directory or another, empty directory as the destination for binaries. Choose *Configure*, change any options you wish to, *Configure* again to let the changes take effect and then *Generate*. @section compile_options CMake options The CMake files for GLFW provide a number of options, although not all are available on all supported platforms. Some of these are de facto standards among CMake users and so have no `GLFW_` prefix. If you are using the GUI version of CMake, these are listed and can be changed from there. If you are using the command-line version, use the `ccmake` tool. Some package systems like Ubuntu and other distributions based on Debian GNU/Linux have this tool in a separate `cmake-curses-gui` package. @subsection compile_options_shared Shared CMake options `BUILD_SHARED_LIBS` determines whether GLFW is built as a static library or as a DLL / shared library / dynamic library. `LIB_SUFFIX` affects where the GLFW shared /dynamic library is installed. If it is empty, it is installed to `$PREFIX/lib`. If it is set to `64`, it is installed to `$PREFIX/lib64`. `GLFW_CLIENT_LIBRARY` determines which client API library to use. If set to `opengl` the OpenGL library is used, if set to `glesv1` for the OpenGL ES 1.x library is used, or if set to `glesv2` the OpenGL ES 2.0 library is used. The selected library and its header files must be present on the system for this to work. `GLFW_BUILD_EXAMPLES` determines whether the GLFW examples are built along with the library. `GLFW_BUILD_TESTS` determines whether the GLFW test programs are built along with the library. @subsection compile_options_osx OS X specific CMake options `GLFW_USE_CHDIR` determines whether `glfwInit` changes the current directory of bundled applications to the `Contents/Resources` directory. `GLFW_USE_MENUBAR` determines whether the first call to `glfwCreateWindow` sets up a minimal menu bar. `GLFW_BUILD_UNIVERSAL` determines whether to build Universal Binaries. @subsection compile_options_win32 Windows specific CMake options `USE_MSVC_RUNTIME_LIBRARY_DLL` determines whether to use the DLL version or the static library version of the Visual C++ runtime library. If set to `ON`, the DLL version of the Visual C++ library is used. It is recommended to set this to `ON`, as this keeps the executable smaller and benefits from security and bug fix updates of the Visual C++ runtime. `GLFW_USE_DWM_SWAP_INTERVAL` determines whether the swap interval is set even when DWM compositing is enabled. If this is `ON`, the swap interval is set even if DWM is enabled. It is recommended to set this to `OFF`, as doing otherwise can lead to severe jitter. `GLFW_USE_OPTIMUS_HPG` determines whether to export the `NvOptimusEnablement` symbol, which forces the use of the high-performance GPU on nVidia Optimus systems. @subsection compile_options_egl EGL specific CMake options `GLFW_USE_EGL` determines whether to use EGL instead of the platform-specific context creation API. Note that EGL is not yet provided on all supported platforms. */