The SOCKET_ERROR and INVALID_SOCKET macro seem to conflict with macros of the same name in ofxNetwork. I don't know what these macros are doing so I don't feel comfortable to start changing them. It doesn't seem like it matters that much but you may want to have a look at that.
In file included from ../../../addons/ofxNetwork/src/ofxTCPClient.h:4:0,
from ../../../addons/ofxNetwork/src/ofxNetwork.h:3,
from src/ofApp.h:57,
from src/ofApp.cpp:1:
../../../addons/ofxNetwork/src/ofxTCPManager.h:75:0: warning: "INVALID_SOCKET" redefined [enabled by default]
#define INVALID_SOCKET -1
^
In file included from ../../../addons/ofxOMXPlayer/src/File.h:3:0,
from ../../../addons/ofxOMXPlayer/src/OMXReader.h:13,
from ../../../addons/ofxOMXPlayer/src/OMXPlayerVideoBase.h:8,
from ../../../addons/ofxOMXPlayer/src/OMXPlayerEGLImage.h:2,
from ../../../addons/ofxOMXPlayer/src/ofxOMXPlayerEngine.h:16,
from ../../../addons/ofxOMXPlayer/src/ofxOMXPlayer.h:7,
from src/ofApp.h:56,
from src/ofApp.cpp:1:
../../../addons/ofxOMXPlayer/src/ADDON_DEFINES.h:146:0: note: this is the location of the previous definition
#define INVALID_SOCKET (~0)
^
In file included from ../../../addons/ofxNetwork/src/ofxTCPClient.h:4:0,
from ../../../addons/ofxNetwork/src/ofxNetwork.h:3,
from src/ofApp.h:57,
from src/ofApp.cpp:1:
../../../addons/ofxNetwork/src/ofxTCPManager.h:76:0: warning: "SOCKET_ERROR" redefined [enabled by default]
#define SOCKET_ERROR -1
^
In file included from ../../../addons/ofxOMXPlayer/src/File.h:3:0,
from ../../../addons/ofxOMXPlayer/src/OMXReader.h:13,
from ../../../addons/ofxOMXPlayer/src/OMXPlayerVideoBase.h:8,
from ../../../addons/ofxOMXPlayer/src/OMXPlayerEGLImage.h:2,
from ../../../addons/ofxOMXPlayer/src/ofxOMXPlayerEngine.h:16,
from ../../../addons/ofxOMXPlayer/src/ofxOMXPlayer.h:7,
from src/ofApp.h:56,
from src/ofApp.cpp:1:
../../../addons/ofxOMXPlayer/src/ADDON_DEFINES.h:145:0: note: this is the location of the previous definition
#define SOCKET_ERROR (-1)
^
The SOCKET_ERROR and INVALID_SOCKET macro seem to conflict with macros of the same name in ofxNetwork. I don't know what these macros are doing so I don't feel comfortable to start changing them. It doesn't seem like it matters that much but you may want to have a look at that.