add basic external libraries

- codec2
- cm256cc
- mbelib
- serialdv
- dsdcc

plugins/samplesource/remoteinput/CMakeLists.txt

@@ -27,6 +27,7 @@ set(remoteinput_HEADERS
 
 include_directories(
     ${CMAKE_SOURCE_DIR}/swagger/sdrangel/code/qt5/client
+    ${Boost_INCLUDE_DIRS}
     ${CM256CC_INCLUDE_DIR}
 )
 
@@ -57,6 +58,10 @@ add_library(${TARGET_NAME} SHARED
 	${remoteinput_SOURCES}
 )
 
+if(ENABLE_EXTERNAL_LIBRARIES)
+    add_dependencies(${TARGET_NAME} cm256cc)
+endif()
+
 target_link_libraries(${TARGET_NAME}
         Qt5::Core
         ${TARGET_LIB}