[Mingw-users] socket and version can't be linked

[fei huang <daniel.huangfei@gm...>]

hi all:
 I have already added -lws2_32 to my LDFLAGS and libws2_32.a is right
at the MinGW lib directory, but
gcc still complains about undefined referneces like "send connect
htons etc..." I printed out the command line
and saw it was correct, any advise please? I get completely
frustrated, even worse than my first experience on Linux.

below is part of the message:
...
Socket.o: In function `ZN2ZQ6common6SocketC2Eiii':
E:/ZQProjs/common/Socket.cpp:141: undefined reference to `socket@...'
Socket.o: In function `ZN2ZQ6common6SocketC1Eiii':
E:/ZQProjs/common/Socket.cpp:141: undefined reference to `socket@...'
Socket.o: In function `ZN2ZQ6common6Socket8readLineEPcjm':
E:/ZQProjs/common/Socket.cpp:214: undefined reference to `recv@...'
E:/ZQProjs/common/Socket.cpp:237: undefined reference to `recv@...'
Socket.o: In function `ZN2ZQ6common6Socket9endSocketEv':
E:/ZQProjs/common/Socket.cpp:306: undefined reference to `setsockopt@...'
E:/ZQProjs/common/Socket.cpp:311: undefined reference to `closesocket@...'
Socket.o: In function `ZN2ZQ6common6Socket12connectErrorEv':
E:/ZQProjs/common/Socket.cpp:321: undefined reference to `WSAGetLastError@...'
Socket.o: In function `ZN2ZQ6common6Socket12setBroadcastEb':
E:/ZQProjs/common/Socket.cpp:400: undefined reference to `setsockopt@...'
Socket.o: In function `ZN2ZQ6common6Socket12setKeepAliveEb':
E:/ZQProjs/common/Socket.cpp:411: undefined reference to `setsockopt@...'
Socket.o: In function `ZN2ZQ6common6Socket10setRoutingEb':
E:/ZQProjs/common/Socket.cpp:434: undefined reference to `setsockopt@...'
Socket.o: In function `ZN2ZQ6common6Socket10setNoDelayEb':
E:/ZQProjs/common/Socket.cpp:446: undefined reference to `setsockopt@...'
Socket.o: In function `ZN2ZQ6common6Socket13setTimeToLiveEh':
E:/ZQProjs/common/Socket.cpp:497: undefined reference to `setsockopt@...'
Socket.o:E:/ZQProjs/common/Socket.cpp:517: more undefined references
to `setsockopt@...' follow
Socket.o: In function `ZN2ZQ6common6Socket9isPendingENS1_7PendingEm':
E:/ZQProjs/common/Socket.cpp:544: undefined reference to `select@...'
E:/ZQProjs/common/Socket.cpp:547: undefined reference to `select@...'
E:/ZQProjs/common/Socket.cpp:550: undefined reference to `select@...'
E:/ZQProjs/common/Socket.cpp:555: undefined reference to `__WSAFDIsSet@...'

and main part of my command line
g++ -fPIC -shared -fvisibility=hidden -L. -LE:\projs\lib
-LE:\Expat2.0.1\Bin -LE:\projs/bin -lexpat -lws2_32 -lrpcrt4 -lversion
-o libCommon.so Exception.o Log.o expatxx.o InetAddr.o Socket.o
Scheduler.o

my env:

MinGW5.1.3
WindowsXP

tks a lot

fei

[Mingw-users] socket and version can't be linked

[fei huang <daniel.huangfei@gm...>]

hi all:
 I have already added -lws2_32 to my LDFLAGS and libws2_32.a is right
at the MinGW lib directory, but
gcc still complains about undefined referneces like "send connect
htons etc..." I printed out the command line
and saw it was correct, any advise please? I get completely
frustrated, even worse than my first experience on Linux.

below is part of the message:
...
Socket.o: In function `ZN2ZQ6common6SocketC2Eiii':
E:/ZQProjs/common/Socket.cpp:141: undefined reference to `socket@...'
Socket.o: In function `ZN2ZQ6common6SocketC1Eiii':
E:/ZQProjs/common/Socket.cpp:141: undefined reference to `socket@...'
Socket.o: In function `ZN2ZQ6common6Socket8readLineEPcjm':
E:/ZQProjs/common/Socket.cpp:214: undefined reference to `recv@...'
E:/ZQProjs/common/Socket.cpp:237: undefined reference to `recv@...'
Socket.o: In function `ZN2ZQ6common6Socket9endSocketEv':
E:/ZQProjs/common/Socket.cpp:306: undefined reference to `setsockopt@...'
E:/ZQProjs/common/Socket.cpp:311: undefined reference to `closesocket@...'
Socket.o: In function `ZN2ZQ6common6Socket12connectErrorEv':
E:/ZQProjs/common/Socket.cpp:321: undefined reference to `WSAGetLastError@...'
Socket.o: In function `ZN2ZQ6common6Socket12setBroadcastEb':
E:/ZQProjs/common/Socket.cpp:400: undefined reference to `setsockopt@...'
Socket.o: In function `ZN2ZQ6common6Socket12setKeepAliveEb':
E:/ZQProjs/common/Socket.cpp:411: undefined reference to `setsockopt@...'
Socket.o: In function `ZN2ZQ6common6Socket10setRoutingEb':
E:/ZQProjs/common/Socket.cpp:434: undefined reference to `setsockopt@...'
Socket.o: In function `ZN2ZQ6common6Socket10setNoDelayEb':
E:/ZQProjs/common/Socket.cpp:446: undefined reference to `setsockopt@...'
Socket.o: In function `ZN2ZQ6common6Socket13setTimeToLiveEh':
E:/ZQProjs/common/Socket.cpp:497: undefined reference to `setsockopt@...'
Socket.o:E:/ZQProjs/common/Socket.cpp:517: more undefined references
to `setsockopt@...' follow
Socket.o: In function `ZN2ZQ6common6Socket9isPendingENS1_7PendingEm':
E:/ZQProjs/common/Socket.cpp:544: undefined reference to `select@...'
E:/ZQProjs/common/Socket.cpp:547: undefined reference to `select@...'
E:/ZQProjs/common/Socket.cpp:550: undefined reference to `select@...'
E:/ZQProjs/common/Socket.cpp:555: undefined reference to `__WSAFDIsSet@...'

and main part of my command line
g++ -fPIC -shared -fvisibility=hidden -L. -LE:\projs\lib
-LE:\Expat2.0.1\Bin -LE:\projs/bin -lexpat -lws2_32 -lrpcrt4 -lversion
-o libCommon.so Exception.o Log.o expatxx.o InetAddr.o Socket.o
Scheduler.o

my env:

MinGW5.1.3
WindowsXP

tks a lot

fei

Re: [Mingw-users] socket and version can't be linked

[JonY <10walls@gm...>]

fei huang wrote:
> hi all:
>  I have already added -lws2_32 to my LDFLAGS and libws2_32.a is right
> at the MinGW lib directory, but
> gcc still complains about undefined referneces like "send connect
> htons etc..." I printed out the command line
> and saw it was correct, any advise please? I get completely
> frustrated, even worse than my first experience on Linux.
> 
> below is part of the message:
> ...
> Socket.o: In function `ZN2ZQ6common6SocketC2Eiii':
> E:/ZQProjs/common/Socket.cpp:141: undefined reference to `socket@...'
> Socket.o: In function `ZN2ZQ6common6SocketC1Eiii':
> E:/ZQProjs/common/Socket.cpp:141: undefined reference to `socket@...'
> Socket.o: In function `ZN2ZQ6common6Socket8readLineEPcjm':
> E:/ZQProjs/common/Socket.cpp:214: undefined reference to `recv@...'
> E:/ZQProjs/common/Socket.cpp:237: undefined reference to `recv@...'
> Socket.o: In function `ZN2ZQ6common6Socket9endSocketEv':
> E:/ZQProjs/common/Socket.cpp:306: undefined reference to `setsockopt@...'
> E:/ZQProjs/common/Socket.cpp:311: undefined reference to `closesocket@...'
> Socket.o: In function `ZN2ZQ6common6Socket12connectErrorEv':
> E:/ZQProjs/common/Socket.cpp:321: undefined reference to `WSAGetLastError@...'
> Socket.o: In function `ZN2ZQ6common6Socket12setBroadcastEb':
> E:/ZQProjs/common/Socket.cpp:400: undefined reference to `setsockopt@...'
> Socket.o: In function `ZN2ZQ6common6Socket12setKeepAliveEb':
> E:/ZQProjs/common/Socket.cpp:411: undefined reference to `setsockopt@...'
> Socket.o: In function `ZN2ZQ6common6Socket10setRoutingEb':
> E:/ZQProjs/common/Socket.cpp:434: undefined reference to `setsockopt@...'
> Socket.o: In function `ZN2ZQ6common6Socket10setNoDelayEb':
> E:/ZQProjs/common/Socket.cpp:446: undefined reference to `setsockopt@...'
> Socket.o: In function `ZN2ZQ6common6Socket13setTimeToLiveEh':
> E:/ZQProjs/common/Socket.cpp:497: undefined reference to `setsockopt@...'
> Socket.o:E:/ZQProjs/common/Socket.cpp:517: more undefined references
> to `setsockopt@...' follow
> Socket.o: In function `ZN2ZQ6common6Socket9isPendingENS1_7PendingEm':
> E:/ZQProjs/common/Socket.cpp:544: undefined reference to `select@...'
> E:/ZQProjs/common/Socket.cpp:547: undefined reference to `select@...'
> E:/ZQProjs/common/Socket.cpp:550: undefined reference to `select@...'
> E:/ZQProjs/common/Socket.cpp:555: undefined reference to `__WSAFDIsSet@...'
> 
> and main part of my command line
> g++ -fPIC -shared -fvisibility=hidden -L. -LE:\projs\lib
> -LE:\Expat2.0.1\Bin -LE:\projs/bin -lexpat -lws2_32 -lrpcrt4 -lversion
> -o libCommon.so Exception.o Log.o expatxx.o InetAddr.o Socket.o
> Scheduler.o
> 
> my env:
> 
> MinGW5.1.3
> WindowsXP
> 
> tks a lot
> 
> fei
> 

Hi,
Add the -llib stuff behind your object files.

eg:
g++ -fPIC -shared -fvisibility=hidden -L. -LE:\projs\lib 
-LE:\Expat2.0.1\Bin -LE:\projs/bin -o libCommon.so Exception.o Log.o 
expatxx.o InetAddr.o Socket.o Scheduler.o -lexpat -lws2_32 -lrpcrt4 
-lversion

Re: [Mingw-users] socket and version can't be linked

[Keith Marshall <keithmarshall@us...>]

On Thursday 13 March 2008 12:08, fei huang wrote:
> I have already added -lws2_32 to my LDFLAGS and libws2_32.a is right
> at the MinGW lib directory, but gcc still complains about undefined
> referneces like "send connect htons etc..." I printed out the command
> line and saw it was correct, ...

Yep.  Here it is, as you posted it, and it is *not* correct...

> g++ -fPIC -shared -fvisibility=hidden -L. -LE:\projs\lib
> -LE:\Expat2.0.1\Bin -LE:\projs/bin -lexpat -lws2_32 -lrpcrt4
> -lversion -o libCommon.so Exception.o Log.o expatxx.o InetAddr.o
> Socket.o Scheduler.o

You've specified your libraries *before* your object modules, which is 
just plain wrong; the order is important!  This is a FAQ, so you can 
find more info in the archives, or on the MinGWiki, but here's an 
alternative reference, which you may find especially useful:
http://webpages.charter.net/ppluzhnikov/linker.html

And yes BTW, I do know you can get away with your incorrect usage for 
ELF shared object libraries under Linux, but that doesn't exonerate it; 
it is still incorrect, and even on Linux it will blow up in your face, 
if you incorrectly position references to static libraries in this way;
on Woe32 you get no such dispensation for such incorrect usage, with 
*any* type of library.

Regards,
Keith.

Re: [Mingw-users] socket and version can't be linked

[fei huang <daniel.huangfei@gm...>]

Hi Keith and Jon:
    It worked! just unbelievable, I usually compile and link with a
single command line, unless a makefile is used, this project I'm
working on is rather complicated than what I've had before.

I've been a linux user for years though, my programs are developed
under Windows with Visual Studio, so actually not a experienced linux
programmer.

this is so useful, and the reference is great.  thank you so much...

best regards
fei