plib-users

[Plib-users] linking trouble

[Jos E. <je...@gm...>]

Hi guys,

I am trying to experiment with plibnet but can't manage to get it to
work. My code (which just binds to a port, nothing else yet) compiles
fine, but I can't manage to get it linked. Here's the top part of my
output and command:

[jos@u15178506 server]$ make
g++ -lplibnet -lplibul -o server application.o main.o server.o
server.o(.text+0x11): In function `CServer::CServer()':
/home/jos/ts/server/server.cpp:7: undefined reference to `netInit()'
server.o(.text+0x32):/home/jos/ts/server/server.cpp:9: undefined
reference to `netSocket::netSocket()'
server.o(.text+0x72):/home/jos/ts/server/server.cpp:11: undefined
reference to `netSocket::open(bool)'
(etc...)

Thus, I already include plibnet and I do have a file called
/usr/lib/libplibnet.a, but I nevertheless get undefined references.
Any ideas? (My makefile is below) Thanks in advance!

Jos

EXECUTABLE =3D server

CC =3D g++
CFLAGS =3D -Wall -W -pedantic -ggdb
LFLAGS =3D -lplibnet -lplibul
DFLAGS =3D -A -R -p -u -t -c -Q
COMPILE =3D $(CC) $(CFLAGS) -c -g
SRCS :=3D $(wildcard *.cpp)
OBJS :=3D $(patsubst %.cpp,%.o,$(SRCS))

# Standard target:

all: $(EXECUTABLE)

# Main target:

$(EXECUTABLE): $(OBJS)
        $(CC) $(LFLAGS) -o $(EXECUTABLE) $(OBJS)

# All .cpp files have to be compiled to .o files:

%.o: %.cpp
        $(COMPILE) -o $@ $<

clean:
        -rm $(OBJS) $(EXECUTABLE) *~ autodoc.*

Re: [Plib-users] linking trouble

[Steve B. <sjb...@ai...>]

Jos Elkink wrote:
> Hi guys,
> 
> I am trying to experiment with plibnet but can't manage to get it to
> work. My code (which just binds to a port, nothing else yet) compiles
> fine, but I can't manage to get it linked.

I suggest you download the PLIB examples package and check out how
the 'net' sample programs are put together.

---------------------------- Steve Baker -------------------------
HomeEmail: <sjb...@ai...>    WorkEmail: <sj...@li...>
HomePage : http://www.sjbaker.org
Projects : http://plib.sf.net    http://tuxaqfh.sf.net
            http://tuxkart.sf.net http://prettypoly.sf.net
-----BEGIN GEEK CODE BLOCK-----
GCS d-- s:+ a+ C++++$ UL+++$ P--- L++++$ E--- W+++ N o+ K? w--- !O M-
V-- PS++ PE- Y-- PGP-- t+ 5 X R+++ tv b++ DI++ D G+ e++ h--(-) r+++ y++++
-----END GEEK CODE BLOCK-----

Re: [Plib-users] linking trouble

[Jos E. <je...@gm...>]

> I suggest you download the PLIB examples package and check out how
> the 'net' sample programs are put together.

I did, actually, but I can't find the difference. Besides, even if I
made serious mistakes in the coding, it should still link, shouldn't
it? Right now it doesn't recognize the 'netSocket', 'netInit', etc.
references, so there is a problem other than coding errors, isn't
there?

Jos

Re: [Plib-users] linking trouble

[Steve B. <sjb...@ai...>]

Jos Elkink wrote:
>>I suggest you download the PLIB examples package and check out how
>>the 'net' sample programs are put together.
> 
> 
> I did, actually, but I can't find the difference. Besides, even if I
> made serious mistakes in the coding, it should still link, shouldn't
> it? Right now it doesn't recognize the 'netSocket', 'netInit', etc.
> references, so there is a problem other than coding errors, isn't
> there?

Not necessarily...you might have included some ancient version of
the PLIB header files...you might have done something ugly like:

   // Didn't feel like including the real headers
   // #include <plib/net.h>
   extern bool netInit ( float totally_the_wrong_parameter_type ) ;
   ....
   int main ()
   {
     bool x = netInit ( 3.14159 ) ;
     ...
   }

...there are all sorts of possibilities for the 'creative' programmer!

---------------------------- Steve Baker -------------------------
HomeEmail: <sjb...@ai...>    WorkEmail: <sj...@li...>
HomePage : http://www.sjbaker.org
Projects : http://plib.sf.net    http://tuxaqfh.sf.net
            http://tuxkart.sf.net http://prettypoly.sf.net
-----BEGIN GEEK CODE BLOCK-----
GCS d-- s:+ a+ C++++$ UL+++$ P--- L++++$ E--- W+++ N o+ K? w--- !O M-
V-- PS++ PE- Y-- PGP-- t+ 5 X R+++ tv b++ DI++ D G+ e++ h--(-) r+++ y++++
-----END GEEK CODE BLOCK-----

Re: [Plib-users] linking trouble

[Frederic B. <fre...@fr...>]

the linker may be sensible to parameter order. Try :

g++ application.o main.o server.o -o server -lplibnet -lplibul

-Fred

Quoting Jos Elkink:

> Hi guys,
>
> I am trying to experiment with plibnet but can't manage to get it to
> work. My code (which just binds to a port, nothing else yet) compiles
> fine, but I can't manage to get it linked. Here's the top part of my
> output and command:
>
> [jos@u15178506 server]$ make
> g++ -lplibnet -lplibul -o server application.o main.o server.o
> server.o(.text+0x11): In function `CServer::CServer()':
> /home/jos/ts/server/server.cpp:7: undefined reference to `netInit()'
> server.o(.text+0x32):/home/jos/ts/server/server.cpp:9: undefined
> reference to `netSocket::netSocket()'
> server.o(.text+0x72):/home/jos/ts/server/server.cpp:11: undefined
> reference to `netSocket::open(bool)'
> (etc...)
>
> Thus, I already include plibnet and I do have a file called
> /usr/lib/libplibnet.a, but I nevertheless get undefined references.
> Any ideas? (My makefile is below) Thanks in advance!
>
> Jos
>
> EXECUTABLE =3D server
>
> CC =3D g++
> CFLAGS =3D -Wall -W -pedantic -ggdb
> LFLAGS =3D -lplibnet -lplibul
> DFLAGS =3D -A -R -p -u -t -c -Q
> COMPILE =3D $(CC) $(CFLAGS) -c -g
> SRCS :=3D $(wildcard *.cpp)
> OBJS :=3D $(patsubst %.cpp,%.o,$(SRCS))
>
> # Standard target:
>
> all: $(EXECUTABLE)
>
> # Main target:
>
> $(EXECUTABLE): $(OBJS)
>         $(CC) $(LFLAGS) -o $(EXECUTABLE) $(OBJS)
>
> # All .cpp files have to be compiled to .o files:
>
> %.o: %.cpp
>         $(COMPILE) -o $@ $<
>
> clean:
>         -rm $(OBJS) $(EXECUTABLE) *~ autodoc.*
>
>
> -------------------------------------------------------
> SF.Net email is sponsored by: Tell us your software development plans!
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> _______________________________________________
> plib-users mailing list
> pli...@li...
> https://lists.sourceforge.net/lists/listinfo/plib-users
>

Re: [Plib-users] linking trouble

[Jos E. <je...@gm...>]

Thank you - that solves it! :) I can't say I understand why, but I'm
happy enough ...

Jos

On 4/28/05, Frederic Bouvier <fre...@fr...> wrote:
> the linker may be sensible to parameter order. Try :
>=20
> g++ application.o main.o server.o -o server -lplibnet -lplibul
>=20
> -Fred
>=20
> Quoting Jos Elkink:
>=20
> > Hi guys,
> >
> > I am trying to experiment with plibnet but can't manage to get it to
> > work. My code (which just binds to a port, nothing else yet) compiles
> > fine, but I can't manage to get it linked. Here's the top part of my
> > output and command:
> >
> > [jos@u15178506 server]$ make
> > g++ -lplibnet -lplibul -o server application.o main.o server.o
> > server.o(.text+0x11): In function `CServer::CServer()':
> > /home/jos/ts/server/server.cpp:7: undefined reference to `netInit()'
> > server.o(.text+0x32):/home/jos/ts/server/server.cpp:9: undefined
> > reference to `netSocket::netSocket()'
> > server.o(.text+0x72):/home/jos/ts/server/server.cpp:11: undefined
> > reference to `netSocket::open(bool)'
> > (etc...)
> >
> > Thus, I already include plibnet and I do have a file called
> > /usr/lib/libplibnet.a, but I nevertheless get undefined references.
> > Any ideas? (My makefile is below) Thanks in advance!
> >
> > Jos
> >
> > EXECUTABLE =3D server
> >
> > CC =3D g++
> > CFLAGS =3D -Wall -W -pedantic -ggdb
> > LFLAGS =3D -lplibnet -lplibul
> > DFLAGS =3D -A -R -p -u -t -c -Q
> > COMPILE =3D $(CC) $(CFLAGS) -c -g
> > SRCS :=3D $(wildcard *.cpp)
> > OBJS :=3D $(patsubst %.cpp,%.o,$(SRCS))
> >
> > # Standard target:
> >
> > all: $(EXECUTABLE)
> >
> > # Main target:
> >
> > $(EXECUTABLE): $(OBJS)
> >         $(CC) $(LFLAGS) -o $(EXECUTABLE) $(OBJS)
> >
> > # All .cpp files have to be compiled to .o files:
> >
> > %.o: %.cpp
> >         $(COMPILE) -o $@ $<
> >
> > clean:
> >         -rm $(OBJS) $(EXECUTABLE) *~ autodoc.*
> >
> >
> > -------------------------------------------------------
> > SF.Net email is sponsored by: Tell us your software development plans!
> > Take this survey and enter to win a one-year sub to SourceForge.net
> > Plus IDC's 2005 look-ahead and a copy of this survey
> > Click here to start!  http://www.idcswdc.com/cgi-bin/survey?id=105hix
> > _______________________________________________
> > plib-users mailing list
> > pli...@li...
> > https://lists.sourceforge.net/lists/listinfo/plib-users
> >
>=20
> -------------------------------------------------------
> SF.Net email is sponsored by: Tell us your software development plans!
> Take this survey and enter to win a one-year sub to SourceForge.net
> Plus IDC's 2005 look-ahead and a copy of this survey
> Click here to start!  http://www.idcswdc.com/cgi-bin/survey?id=105hix
> _______________________________________________
> plib-users mailing list
> pli...@li...
> https://lists.sourceforge.net/lists/listinfo/plib-users
>

Re: [Plib-users] linking trouble

[Frederic B. <fre...@fr...>]

Because it solves unresolved symbols introduced by an argument by looking
sequentially in the remainder of the command line, instead of rewinding t=
he
command line ?

-Fred

Quoting Jos Elkink:

> Thank you - that solves it! :) I can't say I understand why, but I'm
> happy enough ...
>
> Jos
>
> On 4/28/05, Frederic Bouvier <fre...@fr...> wrote:
> > the linker may be sensible to parameter order. Try :
> >
> > g++ application.o main.o server.o -o server -lplibnet -lplibul
> >
> > -Fred
> >
> > Quoting Jos Elkink:
> >
> > > Hi guys,
> > >
> > > I am trying to experiment with plibnet but can't manage to get it t=
o
> > > work. My code (which just binds to a port, nothing else yet) compil=
es
> > > fine, but I can't manage to get it linked. Here's the top part of m=
y
> > > output and command:
> > >
> > > [jos@u15178506 server]$ make
> > > g++ -lplibnet -lplibul -o server application.o main.o server.o
> > > server.o(.text+0x11): In function `CServer::CServer()':
> > > /home/jos/ts/server/server.cpp:7: undefined reference to `netInit()=
'
> > > server.o(.text+0x32):/home/jos/ts/server/server.cpp:9: undefined
> > > reference to `netSocket::netSocket()'
> > > server.o(.text+0x72):/home/jos/ts/server/server.cpp:11: undefined
> > > reference to `netSocket::open(bool)'
> > > (etc...)
> > >
> > > Thus, I already include plibnet and I do have a file called
> > > /usr/lib/libplibnet.a, but I nevertheless get undefined references.
> > > Any ideas? (My makefile is below) Thanks in advance!
> > >
> > > Jos
> > >
> > > EXECUTABLE =3D server
> > >
> > > CC =3D g++
> > > CFLAGS =3D -Wall -W -pedantic -ggdb
> > > LFLAGS =3D -lplibnet -lplibul
> > > DFLAGS =3D -A -R -p -u -t -c -Q
> > > COMPILE =3D $(CC) $(CFLAGS) -c -g
> > > SRCS :=3D $(wildcard *.cpp)
> > > OBJS :=3D $(patsubst %.cpp,%.o,$(SRCS))
> > >
> > > # Standard target:
> > >
> > > all: $(EXECUTABLE)
> > >
> > > # Main target:
> > >
> > > $(EXECUTABLE): $(OBJS)
> > >         $(CC) $(LFLAGS) -o $(EXECUTABLE) $(OBJS)
> > >
> > > # All .cpp files have to be compiled to .o files:
> > >
> > > %.o: %.cpp
> > >         $(COMPILE) -o $@ $<
> > >
> > > clean:
> > >         -rm $(OBJS) $(EXECUTABLE) *~ autodoc.*