build: export example targets

Examples/Algorithms/CMakeLists.txt

@@ -1,13 +1,13 @@
-add_subdirectory(Digitization)
+add_component(Digitization ExamplesDigitization)
 add_subdirectory(Fatras)
 add_subdirectory_if(Geant4 ACTS_BUILD_EXAMPLES_GEANT4)
 add_subdirectory(Generators)
 add_subdirectory_if(GeneratorsPythia8 ACTS_BUILD_EXAMPLES_PYTHIA8)
-add_subdirectory(MaterialMapping)
+add_component(MaterialMapping ExamplesMaterialMapping)
 add_subdirectory(Printers)
 add_subdirectory(Propagation)
 add_subdirectory_if(Traccc ACTS_BUILD_PLUGIN_TRACCC)
-add_subdirectory(TrackFinding)
+add_component(TrackFinding ExamplesTrackFinding)
 add_subdirectory_if(TrackFindingGnn ACTS_BUILD_EXAMPLES_GNN)
 add_subdirectory_if(TrackFindingML ACTS_BUILD_PLUGIN_ONNX)
 add_subdirectory(TrackFitting)
@@ -18,3 +18,5 @@ add_subdirectory_if(Alignment ACTS_BUILD_ALIGNMENT)
 add_subdirectory(Utilities)
 add_subdirectory(AmbiguityResolution)
 add_subdirectory(HelloWorld)
+
+propagate_components_to_parent()

Examples/Algorithms/Digitization/CMakeLists.txt

@@ -7,10 +7,13 @@ acts_add_library(
     src/DigitizationConfigurator.cpp
     src/ModuleClusters.cpp
     src/MuonSpacePointDigitizer.cpp
+    ACTS_INCLUDE_FOLDER include/ActsExamples
 )
 target_include_directories(
     ActsExamplesDigitization
-    PUBLIC $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
+    PUBLIC
+        $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
+        $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>
 )
 
 target_link_libraries(ActsExamplesDigitization PUBLIC Acts::ExamplesFramework)

Examples/Algorithms/MaterialMapping/CMakeLists.txt

@@ -2,11 +2,14 @@ acts_add_library(
     ExamplesMaterialMapping
     src/MaterialValidation.cpp
     src/MaterialMapping.cpp
+    ACTS_INCLUDE_FOLDER include/ActsExamples
 )
 
 target_include_directories(
     ActsExamplesMaterialMapping
-    PUBLIC $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
+    PUBLIC
+        $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
+        $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>
 )
 target_link_libraries(
     ActsExamplesMaterialMapping

Examples/Algorithms/TrackFinding/CMakeLists.txt

@@ -11,20 +11,21 @@ acts_add_library(
     src/TrackParamsLookupEstimation.cpp
     src/GridTripletSeedingAlgorithm.cpp
     src/OrthogonalTripletSeedingAlgorithm.cpp
+    ACTS_INCLUDE_FOLDER include/ActsExamples
 )
 
 target_include_directories(
     ActsExamplesTrackFinding
-    PUBLIC $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
+    PUBLIC
+        $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
+        $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>
 )
 
 target_link_libraries(
     ActsExamplesTrackFinding
     PUBLIC Acts::ExamplesMagneticField
 )
 
-acts_compile_headers(ExamplesTrackFinding GLOB "include/**/*.hpp")
-
 # If Hashing examples are enabled, add them to the build
 if(ACTS_BUILD_EXAMPLES_HASHING)
     target_sources(
@@ -34,3 +35,5 @@ if(ACTS_BUILD_EXAMPLES_HASHING)
 
     target_link_libraries(ActsExamplesTrackFinding PUBLIC Annoy)
 endif()
+
+acts_compile_headers(ExamplesTrackFinding GLOB "include/**/*.hpp")

Examples/CMakeLists.txt

@@ -1,5 +1,7 @@
-add_subdirectory(Algorithms)
+add_component   (Framework ExamplesFramework)
 add_subdirectory(Detectors)
-add_subdirectory(Framework)
+add_subdirectory(Algorithms)
 add_subdirectory(Io)
 add_subdirectory_if(Scripts ACTS_BUILD_ANALYSIS_APPS)
+
+propagate_components_to_parent()

Examples/Detectors/CMakeLists.txt

@@ -1,10 +1,12 @@
-add_subdirectory(Common)
-add_subdirectory_if(DD4hepDetector ACTS_BUILD_EXAMPLES_DD4HEP)
+add_component(Common ExamplesDetectorsCommon)
+add_component_if(DD4hepDetector ExamplesDetectorDD4hep ACTS_BUILD_EXAMPLES_DD4HEP)
 add_subdirectory(GenericDetector)
 add_subdirectory_if(Geant4Detector ACTS_BUILD_EXAMPLES_GEANT4)
-add_subdirectory(MagneticField)
+add_component(MagneticField ExamplesMagneticField)
 add_subdirectory_if(TGeoDetector ACTS_BUILD_EXAMPLES_ROOT)
 add_subdirectory(ITkModuleSplitting)
 add_subdirectory(TelescopeDetector)
 add_subdirectory(MuonSpectrometerMockupDetector)
 add_subdirectory_if(GeoModelDetector ACTS_BUILD_PLUGIN_GEOMODEL)
+
+propagate_components_to_parent()

Examples/Detectors/Common/CMakeLists.txt

@@ -3,10 +3,13 @@ acts_add_library(
     src/Detector.cpp
     src/AlignmentDecorator.cpp
     src/StructureSelector.cpp
+    ACTS_INCLUDE_FOLDER include/ActsExamples
 )
 target_include_directories(
     ActsExamplesDetectorsCommon
-    PUBLIC $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
+    PUBLIC
+        $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
+        $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>
 )
 target_link_libraries(
     ActsExamplesDetectorsCommon

Examples/Detectors/DD4hepDetector/CMakeLists.txt

@@ -3,11 +3,14 @@ acts_add_library(
     src/DD4hepDetector.cpp
     src/AlignedDD4hepDetectorElement.cpp
     src/OpenDataDetector.cpp
+    ACTS_INCLUDE_FOLDER include/ActsExamples
 )
 
 target_include_directories(
     ActsExamplesDetectorDD4hep
-    PUBLIC $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
+    PUBLIC
+        $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
+        $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>
 )
 target_link_libraries(
     ActsExamplesDetectorDD4hep
@@ -29,12 +32,12 @@ if(ACTS_BUILD_EXAMPLES_GEANT4)
 
     target_sources(
         ActsExamplesDetectorDD4hep
-        PUBLIC src/DDG4DetectorConstruction.cpp src/DD4hepDetectorGeant4.cpp
+        PRIVATE src/DDG4DetectorConstruction.cpp src/DD4hepDetectorGeant4.cpp
     )
 else()
     target_sources(
         ActsExamplesDetectorDD4hep
-        PUBLIC src/DD4hepDetectorGeant4Stub.cpp
+        PRIVATE src/DD4hepDetectorGeant4Stub.cpp
     )
 endif()
 

Examples/Detectors/MagneticField/CMakeLists.txt

@@ -1,7 +1,12 @@
-acts_add_library(ExamplesMagneticField src/ScalableBFieldService.cpp)
+acts_add_library(ExamplesMagneticField
+    src/ScalableBFieldService.cpp
+    ACTS_INCLUDE_FOLDER include/ActsExamples
+)
 target_include_directories(
     ActsExamplesMagneticField
-    PUBLIC $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
+    PUBLIC
+        $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
+        $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>
 )
 target_link_libraries(ActsExamplesMagneticField PUBLIC Acts::ExamplesFramework)
 

Examples/Framework/CMakeLists.txt

@@ -33,7 +33,9 @@ acts_add_library(
 
 target_include_directories(
     ActsExamplesFramework
-    PUBLIC $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
+    PUBLIC
+        $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
+        $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>
 )
 target_link_libraries(
     ActsExamplesFramework

Examples/Io/CMakeLists.txt

@@ -1,8 +1,10 @@
 add_subdirectory(Csv)
-add_subdirectory_if(EDM4hep ACTS_BUILD_EXAMPLES_EDM4HEP)
+add_component_if(Podio ExamplesIoPodio ACTS_BUILD_EXAMPLES_PODIO)
+add_component_if(EDM4hep ExamplesIoEDM4hep ACTS_BUILD_EXAMPLES_EDM4HEP)
 add_subdirectory(HepMC3)
-add_subdirectory(Json)
+add_component(Json ExamplesIoJson)
 add_subdirectory(Obj)
 add_subdirectory_if(Root ACTS_BUILD_EXAMPLES_ROOT)
 add_subdirectory_if(Svg ACTS_BUILD_PLUGIN_ACTSVG)
-add_subdirectory_if(Podio ACTS_BUILD_EXAMPLES_PODIO)
+
+propagate_components_to_parent()

Examples/Io/EDM4hep/CMakeLists.txt

@@ -9,13 +9,16 @@ acts_add_library(
     src/EDM4hepParticleOutputConverter.cpp
     src/EDM4hepSimHitOutputConverter.cpp
     src/EDM4hepUtil.cpp
+    ACTS_INCLUDE_FOLDER include/ActsExamples
 )
 
 acts_compile_headers(ExamplesIoEDM4hep GLOB include/**/*.hpp)
 
 target_include_directories(
     ActsExamplesIoEDM4hep
-    PUBLIC $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
+    PUBLIC
+        $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
+        $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>
 )
 target_link_libraries(
     ActsExamplesIoEDM4hep

Examples/Io/Json/CMakeLists.txt

@@ -4,10 +4,13 @@ acts_add_library(
     src/JsonMaterialWriter.cpp
     src/JsonSurfacesWriter.cpp
     src/JsonDigitizationConfig.cpp
+    ACTS_INCLUDE_FOLDER include/ActsExamples
 )
 target_include_directories(
     ActsExamplesIoJson
-    PUBLIC $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
+    PUBLIC
+        $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
+        $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>
 )
 target_link_libraries(
     ActsExamplesIoJson

Examples/Io/Podio/CMakeLists.txt

@@ -5,11 +5,14 @@ acts_add_library(
     src/PodioInputConverter.cpp
     src/PodioMeasurementOutputConverter.cpp
     src/PodioMeasurementInputConverter.cpp
+    ACTS_INCLUDE_FOLDER include/ActsExamples
 )
 
 target_include_directories(
     ActsExamplesIoPodio
-    PUBLIC $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
+    PUBLIC
+        $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
+        $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>
 )
 target_link_libraries(
     ActsExamplesIoPodio

cmake/ActsComponentsHelpers.cmake

@@ -67,6 +67,7 @@ function(add_subdirectory_if path)
     if(${ARGN})
         message(STATUS "Enable subdirectory '${_rel}'")
         add_subdirectory(${path})
+        propagate_components_to_parent()
     else()
         message(STATUS "Ignore subdirectory '${_rel}'")
     endif()

cmake/ActsConfig.cmake.in

@@ -102,6 +102,12 @@ if(PluginGnn IN_LIST Acts_COMPONENTS)
         find_dependency(TensorRT)
     endif()
 endif()
+if (ExamplesFramework IN_LIST Acts_COMPONENTS)
+    find_dependency(HepMC3 @HEPMC3_VERSION@ CONFIG EXACT)
+endif()
+if (ExamplesIoPodio IN_LIST Acts_COMPONENTS)
+    find_dependency(podio @podio_VERSION@ CONFIG EXACT)
+endif()
 
 # dependencies that we have built ourselves but cannot be
 # straightforwardly handed to cmake