[cmake] Export config properly

Author: Osyotr

CMakeLists.txt

@@ -1,5 +1,5 @@
 CMAKE_MINIMUM_REQUIRED (VERSION 3.6)
-project(IfcPlusPlus)
+project(IFCPP LANGUAGES CXX)
 
 # Set a default build type if none was specified https://blog.kitware.com/cmake-and-the-default-build-type/
 set(default_build_type "Release")
@@ -12,9 +12,8 @@ if(NOT CMAKE_BUILD_TYPE AND NOT CMAKE_CONFIGURATION_TYPES)
 	# Set the possible values of build type for cmake-gui
 	set_property(CACHE CMAKE_BUILD_TYPE PROPERTY STRINGS "Debug" "Release" "MinSizeRel" "RelWithDebInfo")
 endif()
-message(STATUS "Build type: ${CMAKE_BUILD_TYPE}")
 
-project(IFCPP)
+message(STATUS "Build type: ${CMAKE_BUILD_TYPE}")
 message(STATUS "------------------------------------------------------------------------")
 
 option(BUILD_CONSOLE_APPLICATION "Build an example CLI application" ON)
@@ -38,37 +37,8 @@ ELSE(NOT WIN32)
 	set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /MP")
 ENDIF(NOT WIN32)
 
-set(IFCPP_CONFIG_DIR "share/IFCPP/cmake")
 ADD_SUBDIRECTORY (IfcPlusPlus)
 
-# Install configuration file
-#INCLUDE(CMakePackageConfigHelpers)
-#set(config_file_input  "${CMAKE_CURRENT_SOURCE_DIR}/cmake/IFCPPConfig.cmake.in")
-#set(config_file_output "${CMAKE_CURRENT_BINARY_DIR}/cmake/IFCPPConfig.cmake")
-
-#CONFIGURE_PACKAGE_CONFIG_FILE(
-#  ${config_file_input}
-#  ${config_file_output}
-# INSTALL_DESTINATION ${IFCPP_CONFIG_DIR})
-
-#INSTALL(
-#  FILES ${config_file_output}
-# DESTINATION ${IFCPP_CONFIG_DIR})
-
-#install(
-#    DIRECTORY   src/ifcpp
-#    DESTINATION include
-#    FILES_MATCHING PATTERN "*.h"
-#)
-
-#install(
-#    TARGETS IfcPlusPlus
-    #EXPORT  IfcPlusPlus
-#    RUNTIME DESTINATION bin
-#    LIBRARY DESTINATION bin
-#    ARCHIVE DESTINATION bin
-#)
-  
 IF(BUILD_CONSOLE_APPLICATION)
   ADD_SUBDIRECTORY (examples/CreateIfcWallAndWriteFile)
   ADD_SUBDIRECTORY (examples/LoadFileExample)

IfcPlusPlus/CMakeLists.txt

@@ -1,12 +1,11 @@
 cmake_minimum_required (VERSION 3.6...3.9)
-project(IfcPlusPlus)
+project(IfcPlusPlus LANGUAGES CXX)
 
-ADD_DEFINITIONS(-DIFCQUERY_STATIC_LIB)
+ADD_DEFINITIONS(-DIFCQUERY_LIB)
 ADD_DEFINITIONS(-D_HAS_AUTO_PTR_ETC=1)
 ADD_DEFINITIONS(-DUNICODE)
 ADD_DEFINITIONS(-D_UNICODE)
 set(CMAKE_CXX_STANDARD 17)
-set(CMAKE_CXX_STANDARD C++17)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 
 if(WIN32)
@@ -75,9 +74,14 @@ if (MSVC)
 	set_source_files_properties(src/ifcpp/IFC4X3/TypeFactory.cpp PROPERTIES COMPILE_FLAGS /bigobj)
 endif()
 
-add_library(IfcPlusPlus STATIC ${IFCPP_SOURCE_FILES})
+add_library(IfcPlusPlus ${IFCPP_SOURCE_FILES})
+
+if(NOT BUILD_SHARED_LIBS)
+    target_compile_definitions(IfcPlusPlus PUBLIC IFCQUERY_STATIC_LIB)
+endif()
 
 TARGET_INCLUDE_DIRECTORIES(IfcPlusPlus
+    PUBLIC "$<INSTALL_INTERFACE:include;include/ifcpp/IFC4X3/include;include/ifcpp/external>"
     PRIVATE
 	${CMAKE_CURRENT_SOURCE_DIR}/src
 	${IFCPP_SOURCE_DIR}/IfcPlusPlus/src
@@ -107,24 +111,32 @@ install(
     DESTINATION include
     FILES_MATCHING PATTERN "*.h"
 )
+
+# Install cmake config
+
+set(IFCPP_CONFIG_DIR "share/IFCPP")
+
 install(
     TARGETS IfcPlusPlus
-    EXPORT  IfcPlusPlus
+    EXPORT  IFCPP-targets
     RUNTIME DESTINATION bin
-    LIBRARY DESTINATION bin
-    ARCHIVE DESTINATION bin
+    LIBRARY DESTINATION lib
+    ARCHIVE DESTINATION lib
 )
 
-set(target_output_filename IfcPlusPlus-targets.cmake)
-set(target_output "${CMAKE_BINARY_DIR}/cmake/${target_output_filename}")
-
-export(
-  EXPORT IfcPlusPlus
-  FILE ${target_output}
-  NAMESPACE IFCPP::)
+install(
+    EXPORT IFCPP-targets
+    DESTINATION "${IFCPP_CONFIG_DIR}"
+    NAMESPACE IFCPP::
+)
 
+include(CMakePackageConfigHelpers)
+configure_package_config_file(
+    "${CMAKE_CURRENT_SOURCE_DIR}/IFCPP-config.cmake.in"
+    "${CMAKE_CURRENT_BINARY_DIR}/IFCPP-config.cmake"
+    INSTALL_DESTINATION "${IFCPP_CONFIG_DIR}"
+)
 install(
-  EXPORT IfcPlusPlus
-  DESTINATION ${IFCPP_CONFIG_DIR}
-  FILE ${target_output_filename}
-  NAMESPACE IFCPP::)
+    FILES "${CMAKE_CURRENT_BINARY_DIR}/IFCPP-config.cmake"
+    DESTINATION "${IFCPP_CONFIG_DIR}"
+)

IfcPlusPlus/IFCPP-config.cmake.in

@@ -0,0 +1,3 @@
+@PACKAGE_INIT@
+
+include("${CMAKE_CURRENT_LIST_DIR}/IFCPP-targets.cmake")