Re: Help me to resolve undefined reference

[Andriy Palamarchuk]

--- Ku Cheng  wrote:
> I noticed it and I tried to define it in winbase.h
> file previously. However 
> it created many errors.
>
> Could you tell me what
> documentation tells the 
> purpose of this file and the rules of making change
> to this file?

Hmm. There should not be any problems in adding the
call. I'll look into it.
> The application compiles and runs well in Win32.

How does this compiled under Windows application runs
on Wine?

Please, CC wine-devel list. Somebody else can give us
a hand or be interested in the problem. Yes, this will
give you 2 instances of the mail, sorry :-(

Andriy Palamarchuk

__________________________________________________
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Help me to resolve undefined reference

[Andriy Palamarchuk]

I created a tiny example which calls
DisconnectNamedPipe, added the function declaration to
the header. I was able to successfully compile and
link the example.
Attaching the example and the patch. I'll submit the
patch to CVS.

Let me know if the example works for you after
applying the patch.

Andriy Palamarchuk

__________________________________________________
Do You Yahoo!?
Yahoo! Movies - coverage of the 74th Academy Awards�
http://movies.yahoo.com/

Help me to resolve undefined reference

[Ku Cheng]

It does work, if it is a c program. However if I change it to C++ program, 
it does not link in my environment. I have attach the C++ version. Could 
you try it and let me know. If it works in your machine, it must have 
something to do with my environment.

Thanks for your help again.

Ku

************************** C++ program test.cpp ***********************
#include <winbase.h>

class A {
public:
          A(int a, double b);
private:
         int _a;
         double _b;
};
A::A(int a, double b) {
         _a = a;
         _b = b;
};
int main()
{
     A *mya=new A(2,5.6);
     DisconnectNamedPipe(NULL);
     //ConnectNamedPipe(NULL, NULL);
     return 0;
}

************* Execution in my environment **************

[root@wasabi2 winetest]# winemaker --lower-none --cuiexe -DSTRICT -I/usr/local/
include/wine .;
Winemaker 0.5.8
Copyright 2000 Francois Gouget  for CodeWeavers
Scanning the source directories...
Fixing the source files...
   test.cpp
Generating project files...
   .
[root@wasabi2 winetest]# ./configure -with-wine=/usr/src/redhat/SOURCES/wine
loading cache ./config.cache
checking whether make sets ${MAKE}... (cached) yes
checking for gcc... (cached) gcc
checking whether the C compiler (gcc  ) works... yes
checking whether the C compiler (gcc  ) is a cross-compiler... no
checking whether we are using GNU C... (cached) yes
checking whether gcc accepts -g... (cached) yes
checking for c++... (cached) c++
checking whether the C++ compiler (c++  ) works... yes
checking whether the C++ compiler (c++  ) is a cross-compiler... no
checking whether we are using GNU C++... (cached) yes
checking whether c++ accepts -g... (cached) yes
checking how to run the C preprocessor... (cached) gcc -E
checking whether ln -s works... (cached) yes
checking for sqrt in -lm... (cached) yes
checking for iswalnum in -lw... (cached) no
checking for gethostbyname... (cached) yes
checking for connect... (cached) yes
checking for gcc strength-reduce bug... (cached) no
checking whether external symbols need an underscore prefix... (cached) no
checking whether we can build a Linux dll... (cached) yes
checking whether we need to define __i386__... (cached) no
checking for g++ -fpermissive option... yes
checking for g++ -fno-for-scope option... yes
checking for windef.h... (cached) /usr/src/redhat/SOURCES/wine/include
checking for windef.h header... (cached) /usr/src/redhat/SOURCES/wine/include
checking for libwine.so... (cached) /usr/src/redhat/SOURCES/wine
checking for -lwine... (cached) /usr/src/redhat/SOURCES/wine
checking for libntdll.so... (cached) /usr/src/redhat/SOURCES/wine/dlls
checking for -lntdll... (cached) /usr/src/redhat/SOURCES/wine/dlls
checking for wine... (cached) /usr/src/redhat/SOURCES/wine/wine
checking for winebuild... (cached) 
/usr/src/redhat/SOURCES/wine/tools/winebuild/
winebuild
checking for wrc... (cached) /usr/src/redhat/SOURCES/wine/tools/wrc/wrc
creating ./config.status
creating Make.rules
creating Makefile

Configure finished.  Do 'make' to build the project.

[root@wasabi2 winetest]# make
c++ -c -g -O2 -fpermissive -fno-for-scope  -D_REENTRANT -DWINELIB -DSTRICT 
-I. -
I/usr/local/include/wine -I/usr/src/redhat/SOURCES/wine/include -o test.o 
test.c
pp
test.cpp: In function `int main ()':
test.cpp:17: `DisconnectNamedPipe' undeclared (first use this function)
test.cpp:17: (Each undeclared identifier is reported only once for each
function it appears in.)
make: *** [test.o] Error 1
[root@wasabi2 winetest]#

At 01:03 PM 3/28/2002 -0800, you wrote:
> I created a tiny example which calls
> DisconnectNamedPipe, added the function declaration to
> the header. I was able to successfully compile and
> link the example.
> Attaching the example and the patch. I'll submit the
> patch to CVS.
>
> Let me know if the example works for you after
> applying the patch.
>
> Andriy Palamarchuk
>
> Do You Yahoo!?
> Yahoo! Movies - coverage of the 74th Academy Awards®
> http://movies.yahoo.com/

Help me to resolve undefined reference

[Ku Cheng]

Andriy,

After putting the prototype of DisconnectNamedPipe( ) in the winbase.h 
file, finally my program can link successfully. Previously I put "extern 
bool DsiconnnecrNamedPipe ..." in my source file to avoid compilation 
error. But it still failed at linking phase. What is the difference of 
putting the declaration in winbase.h and in my local file? How is the 
winbase.h  used in "winemaker" and "configure"? Is there any documentation 
explaining this?

Thanks a lot for your help.

Ku

At 01:03 PM 3/28/2002 -0800, you wrote:
> I created a tiny example which calls
> DisconnectNamedPipe, added the function declaration to
> the header. I was able to successfully compile and
> link the example.
> Attaching the example and the patch. I'll submit the
> patch to CVS.
>
> Let me know if the example works for you after
> applying the patch.
>
> Andriy Palamarchuk
>
> Do You Yahoo!?
> Yahoo! Movies - coverage of the 74th Academy Awards®
> http://movies.yahoo.com/

Help me to resolve undefined reference

[Francois Gouget]

On Thu, 28 Mar 2002, Ku Cheng wrote:
> Andriy,
>
> After putting the prototype of DisconnectNamedPipe( ) in the winbase.h
> file, finally my program can link successfully. Previously I put "extern
> bool DsiconnnecrNamedPipe ..." in my source file to avoid compilation
> error. But it still failed at linking phase. What is the difference of
> putting the declaration in winbase.h and in my local file? How is the
> winbase.h  used in "winemaker" and "configure"? Is there any documentation
> explaining this?

This is a regular C vs. C++ issue, not specific to Winelib. When you
put it in your source file you were probably missing the "C"  in extern
"C" ... In winebase.h all function declarations are enclosed with:

#ifdef __cplusplus
extern "C" {
#endif
...
#ifdef __cplusplus
}
#endif

So because "C" was missing, the compiler assumed it was a C++ function
and mangled the name.  Then at link time there was no function by that
(mangled) name.

--
Francois Gouget         [e-mail]        http://fgouget.free.fr/
        War doesn't determine who's right.  War determines who's left.