From af21c2e26f190b6bc6f490bf78d13d05b78dc729 Mon Sep 17 00:00:00 2001
From: Carlos Gomes Martinho <kmartinho8@gmail.com>
Date: Fri, 8 May 2020 02:35:53 +0200
Subject: [PATCH] build: install cmakes find package files

---
 CMakeLists.txt        | 45 ++++++++++++++++++++++++++++++++-----------
 cmake/Config.cmake.in |  4 ++++
 2 files changed, 38 insertions(+), 11 deletions(-)
 create mode 100644 cmake/Config.cmake.in

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 9122f1c..2f35431 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,5 +1,5 @@
 cmake_minimum_required(VERSION 3.5.0)
-project(cpp-jwt)
+project(cpp-jwt VERSION 1.2.0)
 
 option(CPP_JWT_BUILD_EXAMPLES "build examples" ON)
 option(CPP_JWT_BUILD_TESTS "build tests" ON)
@@ -38,9 +38,8 @@ add_library(${PROJECT_NAME} INTERFACE)
 target_include_directories(
   ${PROJECT_NAME}
   INTERFACE $<BUILD_INTERFACE:${${PROJECT_NAME}_SOURCE_DIR}/include>
-            $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>
-            ${OpenSSL_INCLUDE_DIR})
-target_link_libraries(${PROJECT_NAME} INTERFACE ${OpenSSL_LIBRARIES})
+            $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>)
+target_link_libraries(${PROJECT_NAME} INTERFACE OpenSSL::SSL)
 if(NOT CPP_JWT_USE_VENDORED_NLOHMANN_JSON)
   target_link_libraries(${PROJECT_NAME} INTERFACE nlohmann_json::nlohmann_json)
 else()
@@ -76,21 +75,45 @@ endif()
 # ##############################################################################
 
 include(GNUInstallDirs)
+include(CMakePackageConfigHelpers)
+set(CPP_JWT_CONFIG_INSTALL_DIR ${CMAKE_INSTALL_LIBDIR}/cmake/${PROJECT_NAME})
+
 install(
   TARGETS ${PROJECT_NAME}
-  EXPORT ${PROJECT_NAME}_Targets
+  EXPORT ${PROJECT_NAME}Targets
   ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
   LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
   RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR})
+install(
+  EXPORT ${PROJECT_NAME}Targets
+  DESTINATION ${CPP_JWT_CONFIG_INSTALL_DIR}
+  NAMESPACE ${PROJECT_NAME}::
+  COMPONENT dev)
+configure_package_config_file(cmake/Config.cmake.in ${PROJECT_NAME}Config.cmake
+                              INSTALL_DESTINATION ${CPP_JWT_CONFIG_INSTALL_DIR})
+write_basic_package_version_file(${PROJECT_NAME}ConfigVersion.cmake
+                                 COMPATIBILITY SameMajorVersion)
+install(
+  FILES ${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME}Config.cmake
+        ${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME}ConfigVersion.cmake
+  DESTINATION ${CPP_JWT_CONFIG_INSTALL_DIR}
+  COMPONENT dev)
 
-install(DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/include/jwt/detail
-        DESTINATION include/jwt)
-install(DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/include/jwt/impl
-        DESTINATION include/jwt)
-install(DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/include/jwt/json
-        DESTINATION include/jwt)
+install(
+  DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/include/jwt/detail
+  DESTINATION include/jwt
+  COMPONENT dev)
+install(
+  DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/include/jwt/impl
+  DESTINATION include/jwt
+  COMPONENT dev)
+install(
+  DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/include/jwt/json
+  DESTINATION include/jwt
+  COMPONENT dev)
 install(
   DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/include/jwt/
   DESTINATION include/jwt
+  COMPONENT dev
   FILES_MATCHING
   PATTERN "*.hpp")
diff --git a/cmake/Config.cmake.in b/cmake/Config.cmake.in
new file mode 100644
index 0000000..ff0fa67
--- /dev/null
+++ b/cmake/Config.cmake.in
@@ -0,0 +1,4 @@
+@PACKAGE_INIT@
+
+include("${CMAKE_CURRENT_LIST_DIR}/@PROJECT_NAME@Targets.cmake")
+check_required_components("@PROJECT_NAME@")
\ No newline at end of file