diff --git a/CMakeLists.txt b/CMakeLists.txt
index 57d8aed..d7757c8 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -38,22 +38,25 @@ set (maa_VERSION_STRING ${maa_VERSION_MAJOR}.${maa_VERSION_MINOR}.${maa_VERSION_
 set (CMAKE_SWIG_FLAGS "")
 
 option (GTEST "Build all gtests." OFF)
+option (BUILDDOC "Build all doc." OFF)
 
-if (test)
+if (GTEST)
   enable_testing ()
   add_subdirectory (tests)
 endif ()
 
-# add a target to generate API documentation with Doxygen
-find_package (Doxygen)
-if (DOXYGEN_FOUND)
-  configure_file (${CMAKE_CURRENT_SOURCE_DIR}/Doxyfile.in ${CMAKE_CURRENT_BINARY_DIR}/Doxyfile @ONLY)
-  add_custom_target (doc
-    ${DOXYGEN_EXECUTABLE} ${CMAKE_CURRENT_BINARY_DIR}/Doxyfile
-    WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
-    COMMENT "Generating API documentation with Doxygen" VERBATIM
-  )
-endif (DOXYGEN_FOUND)
+if (BUILDDOC)
+  # add a target to generate API documentation with Doxygen
+  find_package (Doxygen)
+  if (DOXYGEN_FOUND)
+    configure_file (${CMAKE_CURRENT_SOURCE_DIR}/Doxyfile.in ${CMAKE_CURRENT_BINARY_DIR}/Doxyfile @ONLY)
+    add_custom_target (doc
+      ${DOXYGEN_EXECUTABLE} ${CMAKE_CURRENT_BINARY_DIR}/Doxyfile
+      WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
+      COMMENT "Generating API documentation with Doxygen" VERBATIM
+    )
+  endif (DOXYGEN_FOUND)
+endif ()
 
 add_subdirectory (src)
 add_subdirectory (examples)