Objective-C 和 C

Question

我尝试使用“libmsrp”，但是当我尝试编译该库时，出现以下错误:

$ make so
gcc -ggdb -shared -Wl,-soname,libmsrp.so.0 -o libmsrp.so.0.0.2 msrp.o msrp_session.o msrp_message.o msrp_relay.o msrp_switch.o msrp_callback.o msrp_network.o msrp_utils.o -Wall -Wstrict-prototypes -Wmissing-prototypes -Wmissing-declarations  -lpthread
ld: unknown option: -soname
collect2: ld returned 1 exit status
make: *** [so] Error 1

因此，我将 -soname 选项更改为 -dylib_install_name -Wl。编译后出现以下错误:

$ make so
gcc -ggdb -shared -Wl,-dylib_install_name -Wl,libmsrp.dylib.0.0.2 -o libmsrp.dylib.0.0.2 msrp.o msrp_session.o msrp_message.o msrp_relay.o msrp_switch.o msrp_callback.o msrp_network.o msrp_utils.o -Wall -Wstrict-prototypes -Wmissing-prototypes -Wmissing-declarations  -lpthread <p>
Undefined symbols:<p>
"_main", referenced from:
start in crt1.10.5.o
ld: symbol(s) not found
collect2: ld returned 1 exit status
make: *** [so] Error 1

所以，我尝试在 Objective-C 项目中进行编译。我添加源文件和头文件并编译项目。

我收到以下错误:

command: MSRP_LIST_FREE(sessions, sessions_lock);

msrp.c:75: error: expected ';' before 'temp'
msrp.c:75: error: 'temp' undeclared (first use in this function)
msrp.c:75: error: 'next' undeclared (first use in this function)
msrp.c:75: error: expected ';' before 'temp'
msrp.c:75: error: 'previous' undeclared (first use in this function)

声明:

#define MSRP_LIST_FREE(list, lock
if(!(list))
    return 0;
else {
    typeof((list)) temp = list, next = NULL;
    while(temp) {
        next = temp->next;
        MSRP_LIST_REMOVE((list), (lock), temp);
        temp = next
    }
}

有什么想法吗？

Answer 1

makefile 可能会处理一些在您从源代码进行编译时未设置的定义。你应该继续与 make 斗争以使其编译；)也许，您应该尝试使用 gmake 而不是 make。