From 8f903b9741774641b684728830ad63067c86711e Mon Sep 17 00:00:00 2001
From: myd7349 <myd7349@gmail.com>
Date: Sat, 14 Dec 2019 15:36:01 +0800
Subject: [PATCH] Improve CMakeLists.txt

- Fix headers installation;
- Handle Threads dependency automatically;
---
 CMakeLists.txt        | 21 +++++++++++++++++----
 indicaConfig.cmake.in |  9 +++++++++
 2 files changed, 26 insertions(+), 4 deletions(-)
 create mode 100644 indicaConfig.cmake.in

diff --git a/CMakeLists.txt b/CMakeLists.txt
index fb6d040..d71d933 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -2,8 +2,11 @@ cmake_minimum_required(VERSION 3.8)
 project(indica VERSION 1.0.0 LANGUAGES CXX)
 option(INDICA_BUILD_TESTS OFF)
 
+include(CMakePackageConfigHelpers)
 include(GNUInstallDirs)
 
+find_package(Threads REQUIRED)
+
 add_library(indica INTERFACE)
 add_library(indica::indica ALIAS indica)
 
@@ -11,10 +14,20 @@ target_compile_features(indica INTERFACE cxx_std_11)
 target_include_directories(indica INTERFACE
   $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>
   $<BUILD_INTERFACE:${CMAKE_CURRENT_LIST_DIR}/include>)
+target_link_libraries(indica INTERFACE Threads::Threads)
 
-install(TARGETS indica EXPORT indicaConfig)
-install(EXPORT indicaConfig
+configure_package_config_file(indicaConfig.cmake.in
+  ${CMAKE_CURRENT_BINARY_DIR}/indicaConfig.cmake
+  INSTALL_DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/indica)
+
+install(TARGETS indica EXPORT indicaTargets)
+install(EXPORT indicaTargets
+        FILE indicaTargets.cmake
         NAMESPACE indica::
         DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/indica)
-install(FILES ${CMAKE_CURRENT_LIST_DIR}/include/indica.hpp
-        DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}/indica)
+install(FILES ${CMAKE_CURRENT_BINARY_DIR}/indicaConfig.cmake
+        DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/indica)
+install(DIRECTORY ${CMAKE_CURRENT_LIST_DIR}/include/indicators
+        DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}
+        USE_SOURCE_PERMISSIONS
+        PATTERN "*.hpp")
diff --git a/indicaConfig.cmake.in b/indicaConfig.cmake.in
new file mode 100644
index 0000000..776c8b2
--- /dev/null
+++ b/indicaConfig.cmake.in
@@ -0,0 +1,9 @@
+@PACKAGE_INIT@
+
+include(CMakeFindDependencyMacro)
+
+find_dependency(Threads)
+
+if (NOT TARGET indica::indica)
+  include(${CMAKE_CURRENT_LIST_DIR}/indicaTargets.cmake)
+endif ()