CI: also build examples (#166)

* Add all examples to cmake
* add cmake option to make all examples
* ci: also build examples
* add "namespaced" library alias

.github/workflows/main.yml

@@ -37,7 +37,7 @@ jobs:
       run: |
         mkdir build
         cd build
-        cmake ..
+        cmake -DRMG_BUILD_EXAMPLES=1 ..
         make
         make install
     - name: Run full test suite

CMakeLists.txt

@@ -174,6 +174,11 @@ if(RMG_BUILD_DOCS)
   add_subdirectory(docs)
 endif()
 
+option(RMG_BUILD_EXAMPLES "Build all remage examples" OFF)
+if(RMG_BUILD_EXAMPLES)
+  add_subdirectory(examples)
+endif()
+
 include(CTest)
 add_subdirectory(tests)
 

examples/01-gdml/CMakeLists.txt

@@ -3,7 +3,10 @@ project(01-gdml)
 
 set(CMAKE_BUILD_TYPE RelWithDebInfo)
 
-find_package(remage REQUIRED COMPONENTS GDML)
+if(CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR)
+  # stand-alone build.
+  find_package(remage REQUIRED COMPONENTS GDML)
+endif()
 
 add_executable(01-gdml main.cc)
 target_link_libraries(01-gdml PUBLIC RMG::remage)

examples/02-hpge/CMakeLists.txt

@@ -3,7 +3,10 @@ project(02-hpge)
 
 set(CMAKE_BUILD_TYPE RelWithDebInfo)
 
-find_package(remage)
+if(CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR)
+  # stand-alone build.
+  find_package(remage REQUIRED)
+endif()
 
 add_executable(02-hpge main.cc HPGeTestStand.hh HPGeTestStand.cc)
 target_link_libraries(02-hpge PUBLIC RMG::remage)

examples/03-optics/CMakeLists.txt

@@ -3,7 +3,10 @@ project(03-optics)
 
 set(CMAKE_BUILD_TYPE RelWithDebInfo)
 
-find_package(remage REQUIRED COMPONENTS GDML)
+if(CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR)
+  # stand-alone build.
+  find_package(remage REQUIRED COMPONENTS GDML)
+endif()
 
 add_executable(03-optics main.cc)
 target_link_libraries(03-optics PUBLIC RMG::remage)

examples/04-cosmogenics/CMakeLists.txt

@@ -3,7 +3,10 @@ project(04-surface-cosmogenic)
 
 set(CMAKE_BUILD_TYPE RelWithDebInfo)
 
-find_package(remage)
+if(CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR)
+  # stand-alone build.
+  find_package(remage REQUIRED)
+endif()
 
 add_executable(04-surface-cosmogenic main.cc HPGeTestStand.hh HPGeTestStand.cc)
 target_link_libraries(04-surface-cosmogenic PUBLIC RMG::remage)

examples/05-MUSUN/CMakeLists.txt

@@ -3,7 +3,10 @@ project(05-MUSUN)
 
 set(CMAKE_BUILD_TYPE RelWithDebInfo)
 
-find_package(remage)
+if(CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR)
+  # stand-alone build.
+  find_package(remage REQUIRED)
+endif()
 
 add_executable(05-MUSUN main.cc HPGeTestStand.hh HPGeTestStand.cc)
 target_link_libraries(05-MUSUN PUBLIC RMG::remage)

examples/06-NeutronCapture/CMakeLists.txt

@@ -3,7 +3,10 @@ project(06-NeutronCapture)
 
 set(CMAKE_BUILD_TYPE RelWithDebInfo)
 
-find_package(remage)
+if(CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR)
+  # stand-alone build.
+  find_package(remage REQUIRED)
+endif()
 
 add_executable(06-NeutronCapture main.cc HPGeTestStand.hh HPGeTestStand.cc IsotopeOutputScheme.cc
                                  IsotopeOutputScheme.hh)

examples/CMakeLists.txt

@@ -1,2 +1,6 @@
 add_subdirectory(01-gdml)
 add_subdirectory(02-hpge)
+add_subdirectory(03-optics)
+add_subdirectory(04-cosmogenics)
+add_subdirectory(05-MUSUN)
+add_subdirectory(06-NeutronCapture)

src/CMakeLists.txt

@@ -94,6 +94,11 @@ endif()
 
 add_library(remage SHARED ${PROJECT_PUBLIC_HEADERS} ${PROJECT_SOURCES})
 
+if(RMG_BUILD_EXAMPLES)
+  # add an alias to support building examples both stand-alone as well as a part of the main project.
+  add_library(RMG::remage ALIAS remage)
+endif()
+
 # Ensure clients are aware of the minimum C++ standard we were compiled with
 target_compile_features(remage PUBLIC cxx_std_${CMAKE_CXX_STANDARD})