From e11d3efb198722b5c36126f76c86add582e47149 Mon Sep 17 00:00:00 2001
From: Jeremie Deray <deray.jeremie@gmail.com>
Date: Sat, 21 May 2022 14:46:33 -0400
Subject: [PATCH] revisit export (#379)

---
 CMakeLists.txt        | 35 ++++++++++++++++++++++++++++-------
 cmake/Config.cmake.in |  7 +++++++
 2 files changed, 35 insertions(+), 7 deletions(-)
 create mode 100644 cmake/Config.cmake.in

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 6b9cf5d9a..cd490a571 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -279,7 +279,7 @@ endif()
 # INSTALL
 
 INSTALL(TARGETS ${BEHAVIOR_TREE_LIBRARY}
-    EXPORT BehaviorTreeV3Config
+    EXPORT ${PROJECT_NAME}Targets
     ARCHIVE DESTINATION ${BEHAVIOR_TREE_LIB_DESTINATION}
     LIBRARY DESTINATION ${BEHAVIOR_TREE_LIB_DESTINATION}
     RUNTIME DESTINATION ${BEHAVIOR_TREE_BIN_DESTINATION}
@@ -289,16 +289,37 @@ INSTALL( DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/include/
     DESTINATION ${BEHAVIOR_TREE_INC_DESTINATION}
     FILES_MATCHING PATTERN "*.h*")
 
-install(EXPORT BehaviorTreeV3Config
-    DESTINATION "${BEHAVIOR_TREE_LIB_DESTINATION}/BehaviorTreeV3/cmake"
-    NAMESPACE BT::)
-
-export(TARGETS ${PROJECT_NAME}
+install(EXPORT ${PROJECT_NAME}Targets
+    FILE "${PROJECT_NAME}Targets.cmake"
+    DESTINATION "${CMAKE_INSTALL_LIBDIR}/cmake/${PROJECT_NAME}"
     NAMESPACE BT::
-    FILE "${CMAKE_CURRENT_BINARY_DIR}/BehaviorTreeV3Config.cmake")
+    )
 
 export(PACKAGE ${PROJECT_NAME})
 
+include(CMakePackageConfigHelpers)
+
+configure_package_config_file(
+  "${CMAKE_CURRENT_SOURCE_DIR}/cmake/Config.cmake.in"
+  "${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME}Config.cmake"
+  INSTALL_DESTINATION "${CMAKE_INSTALL_LIBDIR}/cmake/${PROJECT_NAME}"
+)
+
+# This requires to declare to project version in the project() macro
+
+#write_basic_package_version_file(
+#  "${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME}ConfigVersion.cmake"
+#  VERSION ${PROJECT_VERSION}
+#  COMPATIBILITY AnyNewerVersion
+#)
+
+install(
+  FILES
+    "${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME}Config.cmake"
+    #    "${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME}ConfigVersion.cmake"
+  DESTINATION "${CMAKE_INSTALL_LIBDIR}/cmake/${PROJECT_NAME}"
+)
+
 ######################################################
 # EXAMPLES and TOOLS
 if(BUILD_TOOLS)
diff --git a/cmake/Config.cmake.in b/cmake/Config.cmake.in
new file mode 100644
index 000000000..64f20beb5
--- /dev/null
+++ b/cmake/Config.cmake.in
@@ -0,0 +1,7 @@
+@PACKAGE_INIT@
+
+include("${CMAKE_CURRENT_LIST_DIR}/@PROJECT_NAME@Targets.cmake")
+
+set(@PROJECT_NAME@_TARGETS "BT::@BEHAVIOR_TREE_LIBRARY@")
+
+check_required_components(@PROJECT_NAME@)