doc: use PRIVATE in target_link_libraries() CMake snippets.

The keyword-less version is discouraged for quite some time already.

doc/namespaces.dox

@@ -39,7 +39,7 @@ target:
 find_package(Magnum REQUIRED)
 
 # ...
-target_link_libraries(your-app Magnum::Magnum)
+target_link_libraries(your-app PRIVATE Magnum::Magnum)
 @endcode
 
 Parts of this library are additionally available in a form of
@@ -66,7 +66,7 @@ library:
 find_package(Magnum REQUIRED Sdl2Application)
 
 # ...
-target_link_libraries(your-app Magnum::Application)
+target_link_libraries(your-app PRIVATE Magnum::Application)
 @endcode
 
 See documentation of particular `*Application` classs, the
@@ -90,7 +90,7 @@ target:
 find_package(Magnum REQUIRED)
 
 # ...
-target_link_libraries(your-app Magnum::Magnum)
+target_link_libraries(your-app PRIVATE Magnum::Magnum)
 @endcode
 
 See @ref building, @ref cmake, @ref matrix-vector and @ref transformations for
@@ -132,7 +132,7 @@ target:
 find_package(Magnum REQUIRED)
 
 # ...
-target_link_libraries(your-app Magnum::Magnum)
+target_link_libraries(your-app PRIVATE Magnum::Magnum)
 @endcode
 
 See @ref building, @ref cmake and @ref types for more information.
@@ -162,7 +162,7 @@ target:
 find_package(Magnum REQUIRED)
 
 # ...
-target_link_libraries(your-app Magnum::Magnum)
+target_link_libraries(your-app PRIVATE Magnum::Magnum)
 @endcode
 
 See @ref building and @ref cmake for more information.
@@ -197,7 +197,7 @@ target:
 find_package(Magnum REQUIRED)
 
 # ...
-target_link_libraries(your-app Magnum::Magnum)
+target_link_libraries(your-app PRIVATE Magnum::Magnum)
 @endcode
 
 See @ref building and @ref cmake for more information.
@@ -222,7 +222,7 @@ target:
 find_package(Magnum REQUIRED)
 
 # ...
-target_link_libraries(your-app Magnum::Magnum)
+target_link_libraries(your-app PRIVATE Magnum::Magnum)
 @endcode
 
 See @ref building and @ref cmake for more information.
@@ -273,7 +273,7 @@ set(CMAKE_MODULE_PATH "${PROJECT_SOURCE_DIR}/modules/" ${CMAKE_MODULE_PATH})
 find_package(Magnum REQUIRED Audio)
 
 # ...
-target_link_libraries(your-app Magnum::Audio)
+target_link_libraries(your-app PRIVATE Magnum::Audio)
 @endcode
 
 Additional plugins and utilities are built separately. See particular
@@ -303,7 +303,7 @@ the `Magnum` package and link to the `Magnum::DebugTools` target:
 find_package(Magnum REQUIRED DebugTools)
 
 # ...
-target_link_libraries(your-app Magnum::DebugTools)
+target_link_libraries(your-app PRIVATE Magnum::DebugTools)
 @endcode
 
 See @ref building, @ref cmake and @ref debug-tools for more information.
@@ -327,7 +327,7 @@ target:
 find_package(Magnum REQUIRED GL)
 
 # ...
-target_link_libraries(your-app Magnum::GL)
+target_link_libraries(your-app PRIVATE Magnum::GL)
 @endcode
 
 In case you're building for EGL or OpenGL ES platforms, you also need to copy
@@ -373,7 +373,7 @@ the `Magnum` package and link to the `Magnum::MeshTools` target:
 find_package(Magnum REQUIRED MeshTools)
 
 # ...
-target_link_libraries(your-app Magnum::MeshTools)
+target_link_libraries(your-app PRIVATE Magnum::MeshTools)
 @endcode
 
 Note that functionality depending on @ref GL APIs is available only if Magnum
@@ -399,7 +399,7 @@ the `Magnum` package and link to the `Magnum::Primitives` target:
 find_package(Magnum REQUIRED Primitives)
 
 # ...
-target_link_libraries(your-app Magnum::Primitives)
+target_link_libraries(your-app PRIVATE Magnum::Primitives)
 @endcode
 
 See @ref building and @ref cmake for more information.
@@ -421,7 +421,7 @@ the `Magnum` package and link to the `Magnum::SceneGraph` target:
 find_package(Magnum REQUIRED SceneGraph)
 
 # ...
-target_link_libraries(your-app Magnum::SceneGraph)
+target_link_libraries(your-app PRIVATE Magnum::SceneGraph)
 @endcode
 
 See @ref building, @ref cmake and @ref scenegraph for more information.
@@ -443,7 +443,7 @@ use this library with CMake, you need to request the `Shaders` component of the
 find_package(Magnum REQUIRED Shaders)
 
 # ...
-target_link_libraries(your-app Magnum::Shaders)
+target_link_libraries(your-app PRIVATE Magnum::Shaders)
 @endcode
 
 See @ref building, @ref cmake and @ref shaders for more information.
@@ -508,7 +508,7 @@ this library with CMake, you need to request the `Text` component of the
 find_package(Magnum REQUIRED Text)
 
 # ...
-target_link_libraries(your-app Magnum::Text)
+target_link_libraries(your-app PRIVATE Magnum::Text)
 @endcode
 
 Additional plugins and utilities are built separately. See particular `*Font`
@@ -535,7 +535,7 @@ component of the `Magnum` package in CMake and link to the
 find_package(Magnum REQUIRED TextureTools)
 
 # ...
-target_link_libraries(your-app Magnum::TextureTools)
+target_link_libraries(your-app PRIVATE Magnum::TextureTools)
 @endcode
 
 Note that functionality depending on @ref GL APIs is available only if Magnum
@@ -564,7 +564,7 @@ this library with CMake, you need to request the `Trade` component of the
 find_package(Magnum REQUIRED Trade)
 
 # ...
-target_link_libraries(your-app Magnum::Trade)
+target_link_libraries(your-app PRIVATE Magnum::Trade)
 @endcode
 
 Additional plugins and utilities are built separately. See particular
@@ -590,7 +590,7 @@ package and link to the `Magnum::Vk` target:
 find_package(Magnum REQUIRED Vk)
 
 # ...
-target_link_libraries(your-app Magnum::Vk)
+target_link_libraries(your-app PRIVATE Magnum::Vk)
 @endcode
 
 See @ref building, @ref cmake and @ref vulkan for more information.

src/Magnum/Audio/Extensions.h

@@ -54,7 +54,7 @@ this library with CMake, you need to request the `Audio` component of the
 find_package(Magnum REQUIRED Audio)
 
 # ...
-target_link_libraries(your-app Magnum::Audio)
+target_link_libraries(your-app PRIVATE Magnum::Audio)
 @endcode
 
 See @ref building and @ref cmake for more information.

src/Magnum/GL/Extensions.h

@@ -70,7 +70,7 @@ package and link to the `Magnum::GL` target:
 find_package(Magnum REQUIRED GL)
 
 # ...
-target_link_libraries(your-app Magnum::GL)
+target_link_libraries(your-app PRIVATE Magnum::GL)
 @endcode
 
 See @ref building, @ref cmake and @ref opengl for more information.

src/Magnum/Platform/AndroidApplication.h

@@ -105,7 +105,7 @@ endif()
 
 # ...
 if(CORRADE_TARGET_ANDROID)
-    target_link_libraries(your-app Magnum::AndroidApplication)
+    target_link_libraries(your-app PRIVATE Magnum::AndroidApplication)
 endif()
 @endcode
 

src/Magnum/Platform/EmscriptenApplication.h

@@ -122,7 +122,7 @@ endif()
 
 # ...
 if(CORRADE_TARGET_EMSCRIPTEN)
-    target_link_libraries(your-app Magnum::EmscriptenApplication)
+    target_link_libraries(your-app PRIVATE Magnum::EmscriptenApplication)
 endif()
 @endcode
 

src/Magnum/Platform/GlfwApplication.h

@@ -110,7 +110,7 @@ set(CMAKE_MODULE_PATH "${PROJECT_SOURCE_DIR}/modules/" ${CMAKE_MODULE_PATH})
 find_package(Magnum REQUIRED GlfwApplication)
 
 # ...
-target_link_libraries(your-app Magnum::GlfwApplication)
+target_link_libraries(your-app PRIVATE Magnum::GlfwApplication)
 @endcode
 
 If no other application is requested, you can also use the generic

src/Magnum/Platform/GlxApplication.h

@@ -65,7 +65,7 @@ In order to use this library from Cmake, you need to request the
 find_package(Magnum REQUIRED GlxApplication)
 
 # ...
-target_link_libraries(your-app Magnum::GlxApplication)
+target_link_libraries(your-app PRIVATE Magnum::GlxApplication)
 @endcode
 
 If no other application is requested, you can also use the generic

src/Magnum/Platform/Sdl2Application.h

@@ -219,7 +219,7 @@ set(CMAKE_MODULE_PATH "${PROJECT_SOURCE_DIR}/modules/" ${CMAKE_MODULE_PATH})
 find_package(Magnum REQUIRED Sdl2Application)
 
 # ...
-target_link_libraries(your-app Magnum::Sdl2Application)
+target_link_libraries(your-app PRIVATE Magnum::Sdl2Application)
 @endcode
 
 If no other application is requested, you can also use the generic

src/Magnum/Platform/WindowlessCglApplication.h

@@ -186,7 +186,7 @@ endif()
 
 # ...
 if(CORRADE_TARGET_APPLE)
-    target_link_libraries(your-app Magnum::WindowlessCglApplication)
+    target_link_libraries(your-app PRIVATE Magnum::WindowlessCglApplication)
 endif()
 @endcode
 

src/Magnum/Platform/WindowlessEglApplication.h

@@ -351,7 +351,7 @@ component of the `Magnum` package and link to the
 find_package(Magnum REQUIRED WindowlessEglApplication)
 
 # ...
-target_link_libraries(your-app Magnum::WindowlessEglApplication)
+target_link_libraries(your-app PRIVATE Magnum::WindowlessEglApplication)
 @endcode
 
 If no other application is requested, you can also use the generic

src/Magnum/Platform/WindowlessGlxApplication.h

@@ -283,7 +283,7 @@ endif()
 
 # ...
 if(CORRADE_TARGET_UNIX)
-    target_link_libraries(your-app Magnum::WindowlessGlxApplication)
+    target_link_libraries(your-app PRIVATE Magnum::WindowlessGlxApplication)
 endif()
 @endcode
 

src/Magnum/Platform/WindowlessIosApplication.h

@@ -181,7 +181,7 @@ endif()
 
 # ...
 if(CORRADE_TARGET_IOS)
-    target_link_libraries(your-app Magnum::WindowlessIosApplication)
+    target_link_libraries(your-app PRIVATE Magnum::WindowlessIosApplication)
 endif()
 @endcode
 

src/Magnum/Platform/WindowlessWglApplication.h

@@ -281,7 +281,7 @@ endif()
 
 # ...
 if(CORRADE_TARGET_WINDOWS)
-    target_link_libraries(your-app Magnum::WindowlessWglApplication)
+    target_link_libraries(your-app PRIVATE Magnum::WindowlessWglApplication)
 endif()
 @endcode
 

src/Magnum/Platform/WindowlessWindowsEglApplication.h

@@ -254,7 +254,7 @@ endif()
 
 # ...
 if(CORRADE_TARGET_WINDOWS)
-    target_link_libraries(your-app Magnum::WindowlessWindowsEglApplication)
+    target_link_libraries(your-app PRIVATE Magnum::WindowlessWindowsEglApplication)
 endif()
 @endcode
 

src/Magnum/Platform/XEglApplication.h

@@ -66,7 +66,7 @@ target:
 find_package(Magnum REQUIRED XEglApplication)
 
 # ...
-target_link_libraries(your-app Magnum::XEglApplication)
+target_link_libraries(your-app PRIVATE Magnum::XEglApplication)
 @endcode
 
 If no other application is requested, you can also use the generic