Question

我正在建立网络 C库，我也想支持 SCTP 。我在这个文件中有wrapper_socket_functions.c

import os

if os.name == 'nt':
    # We redefine timeout_decorator on windows
    class timeout_decorator:
        @staticmethod
        def timeout(*args, **kwargs):
            return lambda f: f # return a no-op decorator
else:
    import timeout_decorator

class BaseSeleniumTestCase(unittest.TestCase):
    ... # Keep your class intact

我有这个makefile。

/*SCTP WRAPPER */
void
Sctp_bindx(int sd, struct sockaddr *addrs, int addrcnt, int flags)
{
    int rbindx = sctp_bindx(sd, addrs, addrcnt, flags);
    if(rbindx == -1)
        prog_error("Sctp_bindx error",true,errno);
}
void
Sctp_connectx(int sd, struct sockaddr *addrs, int addrcnt, sctp_assoc_t *id)
{
    int rconnectx = sctp_connectx(sd, addrs, addrcnt, id);
    if(rconnectx == -1)
        prog_error("Sctp_connectx error",true,errno);
}
int
Sctp_peeloff(int sd, sctp_assoc_t assoc_id)
{
    int rpeeloff = sctp_peeloff(sd, assoc_id);
    if(rpeeloff == -1)
        prog_error("Sctp_paleof error",true,errno);
    return rpeeloff;
}

问题是，当我将它们连接在两个不同的bin 服务器和客户端时，它告诉我：

CC = gcc CFLAGS = -lsctp -c -std=gnu11 -g -Wall -o LIB_PATH = lib/ BIN_PATH = bin/ OBJECTS_LIBRARY = bin/error.o bin/signal.o bin/io_socket.o bin/wrapper_socket_functions.o bin/wrapper_stdio.o bin/wrapper_convert.o bin/wrapper_io_socket.o bin/wrapper_unix.o bin/handlers.o bin/miscellaneous.o bin/protocol.o CLIENT_FILES = bin/client.o SERVER_FILES = bin/server.o all: #Compile MAIN_FILES $(CC) $(CFLAGS) $(BIN_PATH)client.o client.c $(CC) $(CFLAGS) $(BIN_PATH)server.o server.c #Compile LIB_FILES $(CC) $(CFLAGS) $(BIN_PATH)handlers.o $(LIB_PATH)handlers.c $(CC) $(CFLAGS) $(BIN_PATH)signal.o $(LIB_PATH)signal.c $(CC) $(CFLAGS) $(BIN_PATH)error.o $(LIB_PATH)error.c $(CC) $(CFLAGS) $(BIN_PATH)wrapper_socket_functions.o $(LIB_PATH)wrapper_socket_functions.c $(CC) $(CFLAGS) $(BIN_PATH)wrapper_stdio.o $(LIB_PATH)wrapper_stdio.c $(CC) $(CFLAGS) $(BIN_PATH)wrapper_convert.o $(LIB_PATH)wrapper_convert.c $(CC) $(CFLAGS) $(BIN_PATH)wrapper_io_socket.o $(LIB_PATH)wrapper_io_socket.c $(CC) $(CFLAGS) $(BIN_PATH)io_socket.o $(LIB_PATH)io_socket.c $(CC) $(CFLAGS) $(BIN_PATH)wrapper_unix.o $(LIB_PATH)wrapper_unix.c $(CC) $(CFLAGS) $(BIN_PATH)miscellaneous.o $(LIB_PATH)miscellaneous.c $(CC) $(CFLAGS) $(BIN_PATH)protocol.o $(LIB_PATH)protocol.c #Link CLIENT $(CC) -o $(BIN_PATH)client $(OBJECTS_LIBRARY) $(CLIENT_FILES) #Link SERVER $(CC) -o $(BIN_PATH)server $(OBJECTS_LIBRARY) $(SERVER_FILES) #Remove unwanted objects rm -rf bin/*.o

请注意，当我使用undefined reference to sctp_bindx undefined reference to sctp_connectx undefined reference to sctp_peeloff进行编译时，它编译得很好但是，当我尝试链接那个* .o文件时，它会像上面那样抱怨。我还安装了 lksctp_tools 并检查我的内核是否支持 checksctp

-lsctp

Answer 1

删除CFLAGS arg -lsctp并将其添加到LINKFLAGS = -lsctp中，并在$(CC) $(LINKFLAGS).

之后添加链接时添加

无法链接sctp二进制文件

1 个答案: