cmake - find dependencies from exported config file

Andrej730 · Andrej730 · commit 4d52480cbe4a · 2025-12-18T18:46:04.000+05:00
diff --git a/cmake/IfcOpenShellConfig.cmake.in b/cmake/IfcOpenShellConfig.cmake.in
@@ -4,7 +4,42 @@
 set(IFCOPENSHELL_SCHEMA_VERSIONS @SCHEMA_VERSIONS@)
 
 set(IFCOPENSHELL_WITH_OPENCASCADE @WITH_OPENCASCADE@)
+set(IFCOPENSHELL_WITH_CGAL @WITH_CGAL@)
+set(IFCOPENSHELL_IFCXML @IFCXML_SUPPORT@)
+set(IFCOPENSHELL_WITH_ROCKSDB @WITH_ROCKSDB@)
 
+include(CMakeFindDependencyMacro)
+
+set(Boost_USE_STATIC_LIBS ON)
+set(Boost_USE_STATIC_RUNTIME OFF)
+set(Boost_USE_MULTITHREADED ON)
+set(Boost_COMPONENTS system program_options regex thread date_time iostreams)
+find_dependency(Boost CONFIG COMPONENTS ${Boost_COMPONENTS})
+find_dependency(Eigen3 CONFIG)
+
+if(IFCOPENSHELL_WITH_ROCKSDB)
+    find_dependency(zstd CONFIG)
+    find_dependency(RocksDB CONFIG)
+endif()
+
+if(IFCOPENSHELL_IFCXML)
+    find_dependency(LibXml2 CONFIG)
+endif()
+
+
+if(IFCOPENSHELL_WITH_CGAL)
+    find_dependency(CGAL CONFIG)
+endif()
+
+if(IFCOPENSHELL_WITH_OPENCASCADE)
+    find_dependency(OpenCASCADE CONFIG)
+    if(OpenCASCADE_VERSION VERSION_LESS "7.7.0")
+        # cmake configs < 7.7.0 were not adding include directories to targets automatically.
+        set_target_properties(TKernel PROPERTIES
+            INTERFACE_INCLUDE_DIRECTORIES "${OpenCASCADE_INCLUDE_DIR}"
+        )
+    endif()
+endif()
 
 include("${CMAKE_CURRENT_LIST_DIR}/@CONFIG_TARGETS_FILENAME@")
 
diff --git a/src/examples/CMakeLists.txt b/src/examples/CMakeLists.txt
@@ -28,14 +28,6 @@ if(STANDALONE_PROJECT)
     project(IfcOpenShellExamples)
 
     set(CMAKE_CXX_STANDARD 17)
-    set(Boost_USE_STATIC_LIBS ON)
-    set(Boost_USE_STATIC_RUNTIME OFF)
-    set(Boost_USE_MULTITHREADED ON)
-    set(Boost_COMPONENTS system program_options regex thread date_time iostreams)
-    find_package(Boost CONFIG REQUIRED COMPONENTS ${Boost_COMPONENTS})
-    find_package(zstd CONFIG REQUIRED)
-    find_package(RocksDB CONFIG REQUIRED)
-    find_package(LibXml2 CONFIG REQUIRED)
     find_package(IfcOpenShell CONFIG REQUIRED)
     set(SCHEMA_VERSIONS ${IFCOPENSHELL_SCHEMA_VERSIONS})
     set(WITH_OPENCASCADE ${IFCOPENSHELL_WITH_OPENCASCADE})
@@ -61,17 +53,6 @@ if(SCHEMA_VERSIONS MATCHES "2x3")
         add_library(IfcHouseInterface INTERFACE)
 
         if (STANDALONE_PROJECT)
-            find_package(Eigen3 CONFIG REQUIRED)
-            find_package(CGAL CONFIG REQUIRED)
-            find_package(OpenCASCADE CONFIG REQUIRED)
-
-            if(OpenCASCADE_VERSION VERSION_LESS "7.7.0")
-                # cmake configs < 7.7.0 were not adding include directories to targets automatically.
-                set_target_properties(TKernel PROPERTIES
-                    INTERFACE_INCLUDE_DIRECTORIES "${OpenCASCADE_INCLUDE_DIR}"
-                )
-            endif()
-
             target_link_libraries(IfcHouseInterface INTERFACE IfcOpenShell::IfcParse IfcOpenShell::geometry_serializer)
         else()
             target_link_libraries(IfcHouseInterface INTERFACE IfcParse geometry_serializer)
