Observe the CMake variable BUILD_TESTING if it is defined

CMakeLists.txt

@@ -265,7 +265,15 @@ else (build_errors)
 
     link_directories(${PROJECT_BINARY_DIR}/src)
 
-    add_subdirectory(test)
+    if (NOT DEFINED BUILD_TESTING OR BUILD_TESTING)
+      set(BUILD_SDF_TEST TRUE)
+    else()
+      set(BUILD_SDF_TEST FALSE)
+    endif()
+
+    if (BUILD_SDF_TEST)
+      add_subdirectory(test)
+    endif()
     add_subdirectory(src)
     add_subdirectory(include/sdf)
     add_subdirectory(sdf)

src/CMakeLists.txt

@@ -91,74 +91,76 @@ else()
   include_directories(${URDF_INCLUDE_DIRS})
 endif()
 
-set (gtest_sources
-  Actor_TEST.cc
-  AirPressure_TEST.cc
-  Altimeter_TEST.cc
-  Atmosphere_TEST.cc
-  Box_TEST.cc
-  Camera_TEST.cc
-  Collision_TEST.cc
-  Console_TEST.cc
-  Cylinder_TEST.cc
-  Element_TEST.cc
-  Error_TEST.cc
-  Exception_TEST.cc
-  Frame_TEST.cc
-  Filesystem_TEST.cc
-  Geometry_TEST.cc
-  Gui_TEST.cc
-  Imu_TEST.cc
-  Joint_TEST.cc
-  JointAxis_TEST.cc
-  Lidar_TEST.cc
-  Light_TEST.cc
-  Link_TEST.cc
-  Magnetometer_TEST.cc
-  Material_TEST.cc
-  Mesh_TEST.cc
-  Model_TEST.cc
-  Noise_TEST.cc
-  parser_urdf_TEST.cc
-  Param_TEST.cc
-  parser_TEST.cc
-  Pbr_TEST.cc
-  Physics_TEST.cc
-  Plane_TEST.cc
-  Root_TEST.cc
-  Scene_TEST.cc
-  SemanticPose_TEST.cc
-  SDF_TEST.cc
-  Sensor_TEST.cc
-  Sphere_TEST.cc
-  Surface_TEST.cc
-  Types_TEST.cc
-  Visual_TEST.cc
-  World_TEST.cc
-)
-
-# Build this test file only if Ignition Tools is installed.
-if (IGNITION-TOOLS_BINARY_DIRS)
-  set (gtest_sources ${gtest_sources}
-    ign_TEST.cc
+if (BUILD_SDF_TEST)
+  set (gtest_sources
+    Actor_TEST.cc
+    AirPressure_TEST.cc
+    Altimeter_TEST.cc
+    Atmosphere_TEST.cc
+    Box_TEST.cc
+    Camera_TEST.cc
+    Collision_TEST.cc
+    Console_TEST.cc
+    Cylinder_TEST.cc
+    Element_TEST.cc
+    Error_TEST.cc
+    Exception_TEST.cc
+    Frame_TEST.cc
+    Filesystem_TEST.cc
+    Geometry_TEST.cc
+    Gui_TEST.cc
+    Imu_TEST.cc
+    Joint_TEST.cc
+    JointAxis_TEST.cc
+    Lidar_TEST.cc
+    Light_TEST.cc
+    Link_TEST.cc
+    Magnetometer_TEST.cc
+    Material_TEST.cc
+    Mesh_TEST.cc
+    Model_TEST.cc
+    Noise_TEST.cc
+    parser_urdf_TEST.cc
+    Param_TEST.cc
+    parser_TEST.cc
+    Pbr_TEST.cc
+    Physics_TEST.cc
+    Plane_TEST.cc
+    Root_TEST.cc
+    Scene_TEST.cc
+    SemanticPose_TEST.cc
+    SDF_TEST.cc
+    Sensor_TEST.cc
+    Sphere_TEST.cc
+    Surface_TEST.cc
+    Types_TEST.cc
+    Visual_TEST.cc
+    World_TEST.cc
   )
-endif()
-
-sdf_build_tests(${gtest_sources})
-
-if (NOT WIN32)
-  set(SDF_BUILD_TESTS_EXTRA_EXE_SRCS Utils.cc)
-  sdf_build_tests(Utils_TEST.cc)
-endif()
-
-if (NOT WIN32)
-  set(SDF_BUILD_TESTS_EXTRA_EXE_SRCS FrameSemantics.cc)
-  sdf_build_tests(FrameSemantics_TEST.cc)
-endif()
-
-if (NOT WIN32)
-  set(SDF_BUILD_TESTS_EXTRA_EXE_SRCS Converter.cc)
-  sdf_build_tests(Converter_TEST.cc)
+
+  # Build this test file only if Ignition Tools is installed.
+  if (IGNITION-TOOLS_BINARY_DIRS)
+    set (gtest_sources ${gtest_sources}
+      ign_TEST.cc
+    )
+  endif()
+
+  sdf_build_tests(${gtest_sources})
+
+  if (NOT WIN32)
+    set(SDF_BUILD_TESTS_EXTRA_EXE_SRCS Utils.cc)
+    sdf_build_tests(Utils_TEST.cc)
+  endif()
+
+  if (NOT WIN32)
+    set(SDF_BUILD_TESTS_EXTRA_EXE_SRCS FrameSemantics.cc)
+    sdf_build_tests(FrameSemantics_TEST.cc)
+  endif()
+
+  if (NOT WIN32)
+    set(SDF_BUILD_TESTS_EXTRA_EXE_SRCS Converter.cc)
+    sdf_build_tests(Converter_TEST.cc)
+  endif()
 endif()
 
 sdf_add_library(${sdf_target} ${sources})