Add glfwConfig module.

This module allows cmake projects to find glfw with FIND_PACKAGE.

src/CMakeLists.txt

@@ -81,5 +81,7 @@ if (BUILD_SHARED_LIBS)
     target_link_libraries(glfw LINK_INTERFACE_LIBRARIES)
 endif()
 
-install(TARGETS glfw DESTINATION lib${LIB_SUFFIX} )
+install(TARGETS glfw
+		EXPORT glfwTargets
+		DESTINATION lib${LIB_SUFFIX} )
 

src/glfwConfig.cmake.in

@@ -0,0 +1,10 @@
+# - Config file for the glfw package
+# It defines the following variables
+#   GLFW_INCLUDE_DIR, the path where GLFW headers are located
+#   GLFW_LIBRARY_DIR, folder in which the GLFW library is located
+#   GLFW_LIBRARY, library to link against to use GLFW
+
+set(GLFW_INCLUDE_DIR "@CMAKE_INSTALL_PREFIX@/include")
+set(GLFW_LIBRARY_DIR "@CMAKE_INSTALL_PREFIX@/lib@LIB_SUFFIX@")
+
+find_library(GLFW_LIBRARY "@GLFW_LIB_NAME@" HINTS ${GLFW_LIBRARY_DIR})

src/glfwConfigVersion.cmake.in

@@ -0,0 +1,10 @@
+set(PACKAGE_VERSION "@GLFW_VERSION_FULL@")
+
+if("${PACKAGE_FIND_VERSION_MAJOR}" EQUAL "@GLFW_VERSION_MAJOR@")
+	set(PACKAGE_VERSION_COMPATIBLE TRUE)
+	if("${PACKAGE_FIND_VERSION_MINOR}" EQUAL @GLFW_VERSION_MINOR@)
+		set(PACKAGE_VERSION_EXACT TRUE)
+	endif()
+else()
+	set(PACKAGE_VERSION_COMPATIBLE FALSE)
+endif()