From 7c762ed14626bde1c145acd63eab8610881b00e2 Mon Sep 17 00:00:00 2001
From: Anonymous Maarten <anonymous.maarten@gmail.com>
Date: Thu, 20 Feb 2020 21:12:19 +0100
Subject: [PATCH] Add indicatorsConfigVersion cmake support + create source
 packages

---
 CMakeLists.txt            | 99 ++++++++++++++++++++++++++++-----------
 indicators.pc.in          |  5 +-
 indicatorsConfig.cmake.in |  2 +-
 3 files changed, 75 insertions(+), 31 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 056c2eb..8d8aa2a 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,8 +1,16 @@
 cmake_minimum_required(VERSION 3.8)
-project(indicators VERSION 1.7.0 LANGUAGES CXX DESCRIPTION "Activity Indicators for Modern C++")
-option(INDICATORS_BUILD_TESTS OFF)
-option(SAMPLES "Build Samples" OFF)
-option(DEMO "Build Demo" OFF)
+
+if(DEFINED PROJECT_NAME)
+  set(INDICATORS_SUBPROJECT ON)
+endif()
+
+project(indicators VERSION 1.7.0 LANGUAGES CXX
+  HOMEPAGE_URL "https://github.com/p-ranav/indicators"
+  DESCRIPTION "Activity Indicators for Modern C++")
+
+option(INDICATORS_BUILD_TESTS "Build indicators tests + enable CTest")
+option(INDICATORS_SAMPLES "Build indicators samples")
+option(INDICATORS_DEMO "Build indicators demo" OFF)
 
 include(CMakePackageConfigHelpers)
 include(GNUInstallDirs)
@@ -18,33 +26,68 @@ target_include_directories(indicators INTERFACE
   $<BUILD_INTERFACE:${CMAKE_CURRENT_LIST_DIR}/include>)
 target_link_libraries(indicators INTERFACE Threads::Threads)
 
-
-if( DEMO )
-    add_subdirectory(demo)
+if(INDICATORS_DEMO)
+  add_subdirectory(demo)
 endif()
 
-if( SAMPLES )
-    add_subdirectory(samples)
+if(INDICATORS_SAMPLES)
+  add_subdirectory(samples)
 endif()
 
-configure_package_config_file(indicatorsConfig.cmake.in
-  ${CMAKE_CURRENT_BINARY_DIR}/indicatorsConfig.cmake
-  INSTALL_DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/indicators)
+if(NOT INDICATORS_SUBPROJECT)
+  configure_package_config_file(indicatorsConfig.cmake.in
+    ${CMAKE_CURRENT_BINARY_DIR}/indicatorsConfig.cmake
+    INSTALL_DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/indicators)
+  write_basic_package_version_file(indicatorsConfigVersion.cmake
+                                   COMPATIBILITY AnyNewerVersion)
 
-configure_file(indicators.pc.in
-  "${CMAKE_CURRENT_BINARY_DIR}/pkgconfig/indicators.pc"
-  @ONLY)
+  configure_file(indicators.pc.in indicators.pc @ONLY)
 
-install(TARGETS indicators EXPORT indicatorsTargets)
-install(EXPORT indicatorsTargets
-        FILE indicatorsTargets.cmake
-        NAMESPACE indicators::
-        DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/indicators)
-install(FILES ${CMAKE_CURRENT_BINARY_DIR}/indicatorsConfig.cmake
-        DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/indicators)
-install(FILES ${CMAKE_CURRENT_BINARY_DIR}/pkgconfig/indicators.pc
-	DESTINATION ${CMAKE_INSTALL_DATAROOTDIR}/pkgconfig/)
-install(DIRECTORY ${CMAKE_CURRENT_LIST_DIR}/include/indicators
-        DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}
-        USE_SOURCE_PERMISSIONS
-        PATTERN "*.hpp")
+  install(TARGETS indicators EXPORT indicatorsTargets)
+  install(EXPORT indicatorsTargets
+          FILE indicatorsTargets.cmake
+          NAMESPACE indicators::
+          DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/indicators)
+  install(FILES ${CMAKE_CURRENT_BINARY_DIR}/indicatorsConfig.cmake
+                ${CMAKE_CURRENT_BINARY_DIR}/indicatorsConfigVersion.cmake
+          DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/indicators)
+  install(FILES ${CMAKE_CURRENT_BINARY_DIR}/indicators.pc
+          DESTINATION ${CMAKE_INSTALL_LIBDIR}/pkgconfig)
+  install(DIRECTORY ${CMAKE_CURRENT_LIST_DIR}/include/indicators
+          DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}
+          USE_SOURCE_PERMISSIONS
+          PATTERN "*.hpp")
+  install(FILES LICENSE LICENSE.termcolor
+          DESTINATION ${CMAKE_INSTALL_DATAROOTDIR}/licenses/indicators)
+
+  if(EXISTS "${PROJECT_SOURCE_DIR}/.gitignore")
+    # Simple glob to regex conversion (.gitignore => CPACK_SOURCE_IGNORE_FILES)
+    file(READ ".gitignore" DOT_GITIGNORE)
+    string(REPLACE ";" "RANDOMSEQUENCE" DOT_GITIGNORE "${DOT_GITIGNORE}")
+    string(REPLACE "\n" ";" DOT_GITIGNORE "${DOT_GITIGNORE}")
+    string(REPLACE "RANDOMSEQUENCE" "\\;" DOT_GITIGNORE "${DOT_GITIGNORE}")
+    foreach(IGNORE_LINE ${DOT_GITIGNORE})
+      if(NOT IGNORE_LINE OR IGNORE_LINE MATCHES "^#")
+        continue()
+      endif()
+      string(REPLACE "\\" "\\\\" IGNORE_LINE "${IGNORE_LINE}")
+      string(REPLACE "." "\\\\." IGNORE_LINE "${IGNORE_LINE}")
+      string(REPLACE "*" ".*" IGNORE_LINE "${IGNORE_LINE}")
+      string(REPLACE "+" "\\\\+" IGNORE_LINE "${IGNORE_LINE}")
+      list(APPEND CPACK_SOURCE_IGNORE_FILES "${IGNORE_LINE}")
+    endforeach()
+  endif()
+
+  # extra ignored files
+  list(APPEND CPACK_SOURCE_IGNORE_FILES
+    .editorconfig
+    .git
+    .gitignore
+    .travis.yml
+    .appveyor.yml
+  )
+  set(CPACK_SOURCE_PACKAGE_FILE_NAME "${PROJECT_NAME}-${PROJECT_VERSION}")
+  set(CPACK_GENERATOR "TGZ;TXZ")
+  set(CPACK_SOURCE_GENERATOR "TGZ;TXZ")
+  include(CPack)
+endif()
diff --git a/indicators.pc.in b/indicators.pc.in
index 4e20701..58e8f5c 100644
--- a/indicators.pc.in
+++ b/indicators.pc.in
@@ -1,6 +1,7 @@
 includedir=@CMAKE_INSTALL_FULL_INCLUDEDIR@
 
-Name: indicators
-Description: Activity Indicators for Modern C++
+Name: @PROJECT_NAME@
+Description: @PROJECT_DESCRIPTION@
+URL: @PROJECT_HOMEPAGE_URL@
 Version: @PROJECT_VERSION@
 Cflags: -I${includedir}
diff --git a/indicatorsConfig.cmake.in b/indicatorsConfig.cmake.in
index ff85be8..edbe144 100644
--- a/indicatorsConfig.cmake.in
+++ b/indicatorsConfig.cmake.in
@@ -2,7 +2,7 @@
 
 include(CMakeFindDependencyMacro)
 
-find_dependency(Threads)
+find_dependency(Threads REQUIRED)
 
 if (NOT TARGET indicators::indicators)
   include(${CMAKE_CURRENT_LIST_DIR}/indicatorsTargets.cmake)