magnum/doc/cmake.dox

/*
    This file is part of Magnum.

    Copyright © 2010, 2011, 2012, 2013 Vladimír Vondruš <mosra@centrum.cz>

    Permission is hereby granted, free of charge, to any person obtaining a
    copy of this software and associated documentation files (the "Software"),
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    the rights to use, copy, modify, merge, publish, distribute, sublicense,
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    Software is furnished to do so, subject to the following conditions:

    The above copyright notice and this permission notice shall be included
    in all copies or substantial portions of the Software.

    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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*/

namespace Magnum {
/** @page cmake Usage with CMake
@brief Guide how to find and use %Magnum with CMake build system

%Magnum uses CMake build system for both building and integration into your
projects. The logic is in module `FindMagnum.cmake` distributed with the engine
in `modules/` directory, you are encouraged to copy it (and its dependencies)
into your project and add path to the files to `CMAKE_MODULE_PATH`. Otherwise,
if CMake won't be able to find this file in predefined locations, it will error
out even if %Magnum might be installed on the system.

Basic usage is:

    find_package(Magnum REQUIRED)

This command tries to find base %Magnum library and then defines these
variables:

- `MAGNUM_FOUND` -- Whether the library was found
- `MAGNUM_LIBRARIES` -- %Magnum library and dependent libraries
- `MAGNUM_INCLUDE_DIRS` -- Root include dir and include dirs of dependencies
- `MAGNUM_PLUGINS_FONT_DIR` -- Directory with font plugins
- `MAGNUM_PLUGINS_IMPORTER_DIR` -- Directory with importer plugins

However, this command will try to find only the base library, not the optional
components. The base library depends on %Corrade and OpenGL libraries (or
OpenGL ES libraries). Additional dependencies are specified by the components.
The optional components are:

- `%Audio` -- Audio library
- `%DebugTools` -- DebugTools library (depends on `%MeshTools`,
  `%Primitives`, `%SceneGraph`, `%Shaders` and `%Shapes` components)
- `%MeshTools` -- MeshTools library
- `%Primitives` -- Primitives library
- `%SceneGraph` -- SceneGraph library
- `%Shaders` -- Shaders library
- `%Shapes` -- Shapes library (depends on `%SceneGraph` component)
- `%Text` -- Text library (depends on `%TextureTools` component)
- `%TextureTools` -- TextureTools library

Platform namespace is split into more components:

- `%GlutApplication` -- @ref Platform::GlutApplication "GlutApplication"
- `%GlxApplication` -- @ref Platform::GlxApplication "GlxApplication"
- `%NaClApplication` -- @ref Platform::NaClApplication "NaClApplication"
- `%Sdl2Application` -- @ref Platform::Sdl2Application "Sdl2Application"
- `%XEglApplication` -- @ref Platform::XEglApplication "XEglApplication"
- `%WindowlessNaClApplication` -- @ref Platform::WindowlessNaClApplication "WindowlessNaClApplication"
- `%WindowlessGlxApplication` -- @ref Platform::WindowlessGlxApplication "WindowlessGlxApplication"

Note that [each namespace](namespaces.html) and all @ref Platform libraries
contain more detailed information about dependencies, availability on
particular platform and also guide how to enable given library in build and use
it with CMake.

Example usage with specifying additional components is:

    find_package(Magnum REQUIRED MeshTools Primitives GlutApplication)

For each component is then defined:

- `MAGNUM_*_FOUND` -- Whether the component was found
- `MAGNUM_*_LIBRARIES` -- Component library and dependent libraries
- `MAGNUM_*_INCLUDE_DIRS` -- Include dirs of module dependencies

If exactly one `*Application` or exactly one `Windowless*Application` component
is requested and found, its libraries and include dirs are available in
convenience aliases `MAGNUM_APPLICATION_LIBRARIES` /
`MAGNUM_WINDOWLESSAPPLICATION_LIBRARIES` and `MAGNUM_APPLICATION_INCLUDE_DIRS`
/ `MAGNUM_WINDOWLESSAPPLICATION_INCLUDE_DIRS` to simplify porting.

Features of found %Magnum library are exposed in these CMake variables, they
are also available as preprocessor variables if including Magnum.h:

- `MAGNUM_BUILD_DEPRECATED` -- Defined if compiled with deprecated APIs
  included
- `MAGNUM_BUILD_STATIC` -- Defined if built as static libraries. Default are
  shared libraries.
- `MAGNUM_TARGET_GLES` -- Defined if compiled for OpenGL ES
- `MAGNUM_TARGET_GLES2` -- Defined if compiled for OpenGL ES 2.0
- `MAGNUM_TARGET_GLES3` -- Defined if compiled for OpenGL ES 3.0
- `MAGNUM_TARGET_DESKTOP_GLES` -- Defined if compiled with OpenGL ES emulation
  on desktop OpenGL

%Corrade library provides also its own set of CMake macros and variables, see
@ref corrade-cmake "its documentation" for more information.
@ref cmake-plugins "Plugins repository" and @ref cmake-integration "Integration library"
have also their own CMake modules.

*/
}