[How To] Add ZeroMQ in Trema App

If someone wants to add the mechanism of ZeroMQ to send message from Trema Application, for instance, Routing_Switch, there are several things that need to do and I have tested OK.

Example Trema App: Routing_Switch

1. Install ZeroMQ
2. Modify its Makefile: 
  • add the include folder location of ZeroMQ :
    • CFLAGS = $(shell $(TREMA)/trema-config --cflags) -I/home/liudanny/SourceCode/zeromq2-1/include -I../topology -g -std=gnu99 -D_GNU_SOURCE -fno-strict-aliasing -Werror -Wall -Wextra -Wformat=2 -Wcast-qual -Wcast-align -Wwrite-strings -Wconversion -Wfloat-equal -Wpointer-arith
  • add library name of zeroMQ and link it:
    • LDFLAGS = $(shell $(TREMA)/trema-config --libs) -lzmq -L../topology -ltopology
3. Write your ZeroMQ code in Routing_Switch.

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