From 73b347f313acefd2e33063bcc79e24e14e300588 Mon Sep 17 00:00:00 2001
From: Sven Fink <sven.fink@wipotec.com>
Date: Tue, 22 Nov 2022 12:34:09 +0100
Subject: [PATCH] Adds the following advantages:  - utf8::cpp is available,
 even when installed  - cmake is aware of the library version  - compatible
 with previous usage: target utf8cpp available when installed

---
 CMakeLists.txt         | 25 ++++++++++++++++++++++---
 utf8cppConfig.cmake.in |  6 ++++++
 2 files changed, 28 insertions(+), 3 deletions(-)
 create mode 100644 utf8cppConfig.cmake.in

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 3b4de44..c8d4b7a 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -19,6 +19,7 @@ target_include_directories(utf8cpp INTERFACE
 add_library(utf8::cpp ALIAS utf8cpp)
 
 if(UTF8_INSTALL)
+    include(CMakePackageConfigHelpers)
     if(MSVC)
         set(DEF_INSTALL_CMAKE_DIR CMake)
     else()
@@ -26,10 +27,28 @@ if(UTF8_INSTALL)
         set(DEF_INSTALL_CMAKE_DIR ${CMAKE_INSTALL_LIBDIR}/cmake/utf8cpp)
     endif()
 
+    write_basic_package_version_file(
+        ${CMAKE_CURRENT_BINARY_DIR}/utf8cppConfigVersion.cmake
+        VERSION ${PROJECT_VERSION}
+        COMPATIBILITY SameMajorVersion
+    )
+
+    configure_package_config_file(
+        ${PROJECT_SOURCE_DIR}/utf8cppConfig.cmake.in
+        ${CMAKE_CURRENT_BINARY_DIR}/utf8cppConfig.cmake
+        INSTALL_DESTINATION ${DEF_INSTALL_CMAKE_DIR}
+    )
+
     install(DIRECTORY source/ DESTINATION include/utf8cpp)
-    install(TARGETS utf8cpp EXPORT utf8cppConfig)
-    install(EXPORT utf8cppConfig DESTINATION ${DEF_INSTALL_CMAKE_DIR})
-    export(EXPORT utf8cppConfig)
+    install(TARGETS utf8cpp EXPORT utf8cppTargets)
+    install(EXPORT utf8cppTargets DESTINATION ${DEF_INSTALL_CMAKE_DIR})
+    install(
+        FILES
+        ${CMAKE_CURRENT_BINARY_DIR}/utf8cppConfig.cmake
+        ${CMAKE_CURRENT_BINARY_DIR}/utf8cppConfigVersion.cmake
+        DESTINATION
+        ${DEF_INSTALL_CMAKE_DIR}
+    )
 endif()
 
 if(UTF8_SAMPLES)
diff --git a/utf8cppConfig.cmake.in b/utf8cppConfig.cmake.in
new file mode 100644
index 0000000..450fe8d
--- /dev/null
+++ b/utf8cppConfig.cmake.in
@@ -0,0 +1,6 @@
+@PACKAGE_INIT@
+
+include("${CMAKE_CURRENT_LIST_DIR}/utf8cppTargets.cmake")
+check_required_components( "utf8cpp" )
+
+add_library(utf8::cpp ALIAS utf8cpp)