update comport program

Guo Wenxue

2020-06-29 fea9eefde499e94fccd248cb40b347c44a8fd5e8

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BIN_FILES=tcp_server udp_server
 
all: clean ${BIN_FILES}
 
tcp_server:
    gcc $@.c  -o $@
    
udp_server:
    gcc $@.c  -o $@
 
clean:
    @rm -f ${BIN_FILES}