--- src/CMakeLists.txt.orig	2018-11-21 00:25:29 UTC
+++ src/CMakeLists.txt
@@ -116,7 +116,9 @@ if (IGNITION-TOOLS_BINARY_DIRS)
   )
 endif()
 
-sdf_build_tests(${gtest_sources})
+if (BUILD_TESTING)
+    sdf_build_tests(${gtest_sources})
+endif()
 
 sdf_add_library(${sdf_target} ${sources})
 target_link_libraries(${sdf_target} PUBLIC ${IGNITION-MATH_LIBRARIES})