Add indicatorsConfigVersion cmake support + create source packages

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()

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}

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)