From fe7a4eb4ffc3512834488e5366c31fd1489860c4 Mon Sep 17 00:00:00 2001
From: Camilla Berglund <elmindreda@elmindreda.org>
Date: Mon, 5 Jan 2015 02:40:32 +0100
Subject: [PATCH] Improved CMake config file generation.

---
 .gitignore                     |  4 ++--
 CMakeLists.txt                 | 28 ++++++++++++++++++++--------
 src/glfw3Config.cmake.in       | 15 +++++++++++++++
 src/glfwConfig.cmake.in        | 10 ----------
 src/glfwConfigVersion.cmake.in | 12 ------------
 5 files changed, 37 insertions(+), 32 deletions(-)
 create mode 100644 src/glfw3Config.cmake.in
 delete mode 100644 src/glfwConfig.cmake.in
 delete mode 100644 src/glfwConfigVersion.cmake.in

diff --git a/.gitignore b/.gitignore
index 3e206b4a..49779f1e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -23,8 +23,8 @@ docs/html
 docs/warnings.txt
 src/glfw_config.h
 src/glfw3.pc
-src/glfwConfig.cmake
-src/glfwConfigVersion.cmake
+src/glfw3Config.cmake
+src/glfw3ConfigVersion.cmake
 
 # Compiled binaries
 src/libglfw.so
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 077e5736..a17dd508 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -509,6 +509,24 @@ endif()
 #--------------------------------------------------------------------
 # Create generated files
 #--------------------------------------------------------------------
+include(CMakePackageConfigHelpers)
+
+if (UNIX)
+    set(GLFW_CONFIG_PATH "${CMAKE_INSTALL_PREFIX}/lib/cmake/glfw3/")
+else()
+    set(GLFW_CONFIG_PATH "${CMAKE_INSTALL_PREFIX}/")
+endif()
+
+configure_package_config_file("${GLFW_SOURCE_DIR}/src/glfw3Config.cmake.in"
+                              "${GLFW_BINARY_DIR}/src/glfw3Config.cmake"
+                              INSTALL_DESTINATION "${GLFW_CONFIG_PATH}"
+                              PATH_VARS CMAKE_INSTALL_PREFIX
+                              NO_CHECK_REQUIRED_COMPONENTS_MACRO)
+
+write_basic_package_version_file("${GLFW_BINARY_DIR}/src/glfw3ConfigVersion.cmake" 
+                                 VERSION ${GLFW_VERSION_FULL}
+                                 COMPATIBILITY SameMajorVersion)
+
 if (GLFW_BUILD_DOCS)
     configure_file("${GLFW_SOURCE_DIR}/docs/Doxyfile.in"
                    "${GLFW_BINARY_DIR}/docs/Doxyfile" @ONLY)
@@ -517,12 +535,6 @@ endif()
 configure_file("${GLFW_SOURCE_DIR}/src/glfw_config.h.in"
                "${GLFW_BINARY_DIR}/src/glfw_config.h" @ONLY)
 
-configure_file("${GLFW_SOURCE_DIR}/src/glfwConfig.cmake.in"
-               "${GLFW_BINARY_DIR}/src/glfwConfig.cmake" @ONLY)
-
-configure_file("${GLFW_SOURCE_DIR}/src/glfwConfigVersion.cmake.in"
-               "${GLFW_BINARY_DIR}/src/glfwConfigVersion.cmake" @ONLY)
-
 configure_file("${GLFW_SOURCE_DIR}/src/glfw3.pc.in"
                "${GLFW_BINARY_DIR}/src/glfw3.pc" @ONLY)
 
@@ -551,8 +563,8 @@ if (GLFW_INSTALL)
     install(DIRECTORY include/GLFW DESTINATION include
             FILES_MATCHING PATTERN glfw3.h PATTERN glfw3native.h)
 
-    install(FILES "${GLFW_BINARY_DIR}/src/glfwConfig.cmake"
-                  "${GLFW_BINARY_DIR}/src/glfwConfigVersion.cmake"
+    install(FILES "${GLFW_BINARY_DIR}/src/glfw3Config.cmake"
+                  "${GLFW_BINARY_DIR}/src/glfw3ConfigVersion.cmake"
             DESTINATION lib${LIB_SUFFIX}/cmake/glfw)
 
     install(EXPORT glfwTargets DESTINATION lib${LIB_SUFFIX}/cmake/glfw)
diff --git a/src/glfw3Config.cmake.in b/src/glfw3Config.cmake.in
new file mode 100644
index 00000000..d34df06f
--- /dev/null
+++ b/src/glfw3Config.cmake.in
@@ -0,0 +1,15 @@
+# - Config file for the glfw3 package
+# It defines the following variables
+#   GLFW3_INCLUDE_DIR, the path where GLFW headers are located
+#   GLFW3_LIBRARY_DIR, folder in which the GLFW library is located
+#   GLFW3_LIBRARY, library to link against to use GLFW
+
+set(GLFW3_VERSION "@GLFW_VERSION_FULL@")
+
+@PACKAGE_INIT@
+
+set_and_check(GLFW3_INCLUDE_DIR "@PACKAGE_CMAKE_INSTALL_PREFIX@/include")
+set_and_check(GLFW3_LIBRARY_DIR "@PACKAGE_CMAKE_INSTALL_PREFIX@/lib@LIB_SUFFIX@")
+
+find_library(GLFW3_LIBRARY "@GLFW_LIB_NAME@" HINTS ${GLFW3_LIBRARY_DIR})
+
diff --git a/src/glfwConfig.cmake.in b/src/glfwConfig.cmake.in
deleted file mode 100644
index 796ad2ca..00000000
--- a/src/glfwConfig.cmake.in
+++ /dev/null
@@ -1,10 +0,0 @@
-# - 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 ${GLFW_LIBRARY_DIR})
diff --git a/src/glfwConfigVersion.cmake.in b/src/glfwConfigVersion.cmake.in
deleted file mode 100644
index da8eaf6d..00000000
--- a/src/glfwConfigVersion.cmake.in
+++ /dev/null
@@ -1,12 +0,0 @@
-
-set(PACKAGE_VERSION "@GLFW_VERSION_FULL@")
-
-if ("${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()
-