doc fix

CMakeLists.txt

@@ -550,6 +550,11 @@ if ((NOT PIP_FREERTOS) AND (NOT CROSSTOOLS))
 	include(PIPDocumentation)
 	find_package(Doxygen)
 	if(DOXYGEN_FOUND)
+		set(DOXY_DEFINES "${PIP_EXPORTS}")
+		foreach (_m "console" "usb" "compress" "crypt" "cloud" "fftw" "opencl" "io_utils" "lua")
+			string(TOUPPER "${_m}" _mdef)
+			list(APPEND DOXY_DEFINES "PIP_${_mdef}_EXPORT")
+		endforeach()
 		set(DOXY_PROJECT_NUMBER "${pip_VERSION}")
 		set(DOXY_QHP_CUST_FILTER_ATTRS "\"PIP ${pip_VERSION}\"")
 		set(DOXY_QHP_SECT_FILTER_ATTRS "\"PIP ${pip_VERSION}\"")
@@ -576,7 +581,7 @@ if ((NOT PIP_FREERTOS) AND (NOT CROSSTOOLS))
 		endforeach(F)
 		string(REPLACE ";" " " DOXY_INPUT "\"${CMAKE_CURRENT_SOURCE_DIR}/libs\"")
 		string(REPLACE ";" " " DOXY_INCLUDE_PATH "${PIP_INCLUDES}")
-		string(REPLACE ";" " " DOXY_DEFINES "${PIP_EXPORTS}")
+		string(REPLACE ";" " " DOXY_DEFINES "${DOXY_DEFINES}")
 		add_documentation(doc doc/Doxyfile.in)
 		install(DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/doc/html DESTINATION ../share/doc/pip COMPONENT doc EXCLUDE_FROM_ALL OPTIONAL)
 	endif()