Make building the ifc tool optional.

Author: SunBlack

CMakeLists.txt

@@ -65,16 +65,19 @@ target_link_libraries(ifc-dom PUBLIC ifc-reader)
 target_compile_features(ifc-dom PUBLIC cxx_std_23)
 target_include_directories(ifc-dom PUBLIC "\$<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}/include>")
 
-# The `ifc` tool executable.
-add_executable(
-  ifc
-  src/tools/ifc.cxx
-)
-add_executable(Microsoft.IFC::Tool ALIAS ifc)
-set_property(TARGET ifc PROPERTY EXPORT_NAME Tool)
-target_compile_features(ifc PUBLIC cxx_std_23)
-target_link_libraries(ifc ifc-reader)
-target_include_directories(ifc PUBLIC "\$<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}/include>")
+option(BUILD_TOOLS "Build the ifc tool executable" ON)
+if(BUILD_TOOLS)
+  # The `ifc` tool executable.
+  add_executable(
+    ifc
+    src/tools/ifc.cxx
+  )
+  add_executable(Microsoft.IFC::Tool ALIAS ifc)
+  set_property(TARGET ifc PROPERTY EXPORT_NAME Tool)
+  target_compile_features(ifc PUBLIC cxx_std_23)
+  target_link_libraries(ifc ifc-reader)
+  target_include_directories(ifc PUBLIC "\$<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}/include>")
+endif()
 
 # The IFC SDK comprises the `reader`, the `dom`, and the tool.
 add_library(SDK INTERFACE)

cmake/install-rules.cmake

@@ -19,10 +19,12 @@ install(
     DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}"
 )
 
-install(
-    TARGETS ifc
-    RUNTIME DESTINATION "${CMAKE_INSTALL_BINDIR}"
-)
+if(TARGET ifc)
+    install(
+        TARGETS ifc
+        RUNTIME DESTINATION "${CMAKE_INSTALL_BINDIR}"
+    )
+endif()
 
 install(
     TARGETS ifc-dom ifc-reader SDK