GCC and sockets

[jahc]

My internet program compiles with no errors, but I get all these undefined references..

8.dh2:Coding/WookieChat> g++ main.cpp
/t/ccskLDZ6.o(.text+0x254c): undefined reference to `gethostbyname(unsigned char const *)'
/t/ccskLDZ6.o(.text+0x25fe): undefined reference to `socket(long, long, long)'
/t/ccskLDZ6.o(.text+0x2676): undefined reference to `setsockopt(long, long, long, void const *, long)'
/t/ccskLDZ6.o(.text+0x2690): undefined reference to `SocketBaseTags(long,...)'
/t/ccskLDZ6.o(.text+0x26e2): undefined reference to `connect(long, sockaddr const *, long)'
/t/ccskLDZ6.o(.text+0x2704): undefined reference to `IoctlSocket(long, unsigned long, char *)'
/t/ccskLDZ6.o(.text+0x271e): undefined reference to `IoctlSocket(long, unsigned long, char *)'
/t/ccskLDZ6.o(.text+0x27a4): undefined reference to `send(long, char const *, long, long)'
/t/ccskLDZ6.o(.text+0x29c0): undefined reference to `send(long, char const *, long, long)'
/t/ccskLDZ6.o(.text+0x2a52): undefined reference to `send(long, char const *, long, long)'
/t/ccskLDZ6.o(.text+0x2ae0): undefined reference to `send(long, char const *, long, long)'
/t/ccskLDZ6.o(.text+0x2b52): undefined reference to `send(long, char const *, long, long)'
/t/ccskLDZ6.o(.text+0x2bde): more undefined references to `send(long, char const *, long, long)' follow
/t/ccskLDZ6.o(.text+0x35d8): undefined reference to `recv(long, char *, long, long)'
/t/ccskLDZ6.o(.text+0x3604): undefined reference to `Errno(void)'
/t/ccskLDZ6.o(.text+0x3646): undefined reference to `shutdown(long, long)'
collect2: ld returned 1 exit status


I'm using GCC 2.95.3 and the MiamiSDK header files that came on the Amiga Developer CD 2.1..

Any ideas on how to fix? I hope I've provided enough information..

[jahc]

I've just tried the amitcp header files and got the same result..

Listing > Ram Disk:AmiTCP-SDK-4.3/netlib

net.lib                  <   24844 ----rwed  2-12-96 23:42:56
netd.lib                 <   14948 ----rwed  2-12-96 23:42:58
netdnb.lib               <   15388 ----rwed  2-12-96 23:42:58
netnb.lib                <   25508 ----rwed  2-12-96 23:42:58
rpcdr.lib                <   37940 ----rwed  2-12-96 23:42:58
rpcr.lib                 <   37656 ----rwed  2-12-96 23:42:58
sana2.lib                <    2656 ----rwed  2-12-96 23:43:00
sana2nb.lib              <    2692 ----rwed  2-12-96 23:43:00

Are these files "link-libraries"? If so how do I use them in GCC.. I've done a "G++ --help" in shell but havent spotted anything which seems obvious.. I tried copying them to certain folders without sucess as well.

[jahc]

Okay RobinC has talked me through creating a link library and using it with GCC.. all works now.

If anyone else is having problems this is how it was solved:

I'm using the MiamiSDK header files. In the MiamiSDK directory is a dir called "FD". You need to turn "SOCKET_LIB.FD" into a link library. Get the latest "fd2pragma" off aminet, then type:

fd2pragma SOCKET_LIB.FD 12 TO socket.lib CLIB CLIB/SOCKET_PROTOS.H
(or wherever you keep your socket_protos.h file)
(btw, for some reason, I had to create a directory called socket.lib for this to work.. small technicality, doesnt matter!)

then:
hunk2aout socket.lib

then:
ar -rs libsocket.a obj.*

then copy the end result, which is "libsocket.a" to gg:lib/ , then you can use it in your program!

when you #include your socket headers, put them inside an extern "C" {}.. i.e.

extern "C"
{
#include
}

.. then when you compile, put "-lsocket" at the end. e.g.
g++ main.cpp -lsocket

and bobs your uncle.

I hope someone else finds this useful one day. It seems like the only newbie using this forum these days.

[jahc]

I'm glad someone else found this useful.