Re: Building pthread.

Hi Pedro,

thanks for the hints, I got libpthread compiling now. Since __MINGW32__ is 
defined, the code assumes some things that are not true for WinCE, e.g. like 
having errno. Instead of modifying mingw32ce now I just modify the 
pthread-w32-2.8.0 code and add a few more compiler flags, see the attached diff 
file. I compile with

make CROSS=arm-wince-mingw32ce- CC="arm-wince-mingw32ce-g++ -DWINCE 
-DNEED_ERRNO -D_ARM_ -D__CRTDLL__ -D_DLL" clean GC

PS: I still can't compile jamvm because of missing liltdl. Do you know where I 
can find it for WinCE? It seems to be part of glibc...

Kind Regards,
Leonardo.

----- Ursprüngliche Mail ----
Von: Pedro Alves <pedro_alves-BwYwT0D5Mwdz4s462UR3lw@xxxxxxxxxxxxxxxx>
An: Leonardo Weiss Chaves <humaita-/E1597aS9LQAvxtiuMwx3w@xxxxxxxxxxxxxxxx>
CC: cegcc-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@xxxxxxxxxxxxxxxx
Gesendet: Freitag, den 20. Juli 2007, 16:01:45 Uhr
Betreff: Re: AW: [Cegcc-devel] Building pthread.


Leonardo Weiss Chaves wrote:
> I am still not able to compile any kind of pthreads with cegcc/mingw32ce.
>  
> I did some smaller modifications to the source of mingw32e and to 
> pthread-w32-2.8.0, and it almost compiles. But at the end I get lots of 
> undefined references. This is strange, since the compiler flag "-DWINCE" 
> should take care of this, for instance by using the errno hack you mentioned.
>  
> I commented the following lines out on mingw32Ce files:
>   errno.h 12,13,14,109
>   signal.h 12
>   process.h 99,102
>  

You shouldn't do this.  That include_next is there to make it as if the files
didn't exist.  Either provide your own versions of these files in the include
path (-I), so the include_next picks them up, or don't include them in
the first place:

#ifndef _WIN32_WCE
#include <errno.h>
#endif

or,

#ifdef HAVE_ERRNO_H
#include <errno.h>
#endif

or similar.


> arm-wince-mingw32ce-g++ -DWINCE -D__CLEANUP_C -O3 -finline-functions -shared 
> -o pthreadGC2.dll attr.o barrier.o cancel.o cleanup.o condvar.o create.o 
> dll.o errno.o exit.o fork.o global.o misc.o mutex.o nonportable.o private.o 
> rwlock.o sched.o semaphore.o signal.o spin.o sync.o tsd.o version.o

I don't see any libs being linked in here?  Where is the -lws2 ?

> condvar.o:condvar.c:(.text+0x184): undefined reference to `errno'
> condvar.o:condvar.c:(.text+0x25c): undefined reference to `errno'
> condvar.o:condvar.c:(.text+0x400): undefined reference to `errno'
> condvar.o:condvar.c:(.text+0x5a0): undefined reference to `errno'
> condvar.o:condvar.c:(.text+0x6f0): undefined reference to `errno'
> condvar.o:condvar.c:(.text+0x848): more undefined references to `errno' follow
> create.o:create.c:(.text+0x108): undefined reference to `_beginthread'
> exit.o:exit.c:(.text+0x2c): undefined reference to `_endthread'
> misc.o:misc.c:(.text+0x224): undefined reference to `ptw32_mcs_lock_acquire'
> misc.o:misc.c:(.text+0x244): undefined reference to `ptw32_mcs_lock_release'
> misc.o:misc.c:(.text+0x274): undefined reference to `ptw32_mcs_lock_release'
> mutex.o:mutex.c:(.text+0x3c8): undefined reference to `ptw32_relmillisecs'
> mutex.o:mutex.c:(.text+0x550): undefined reference to `ptw32_relmillisecs'
> private.o:private.c:(.text+0xe4): undefined reference to `errno'
> private.o:private.c:(.text+0x2b8): undefined reference to `_endthread'
> private.o:private.c:(.text+0x4d4): undefined reference to `_endthread'
> sched.o:sched.c:(.text+0x1c): undefined reference to `errno'
> sched.o:sched.c:(.text+0x3c): undefined reference to `errno'
> sched.o:sched.c:(.text+0xb4): undefined reference to `errno'
> sched.o:sched.c:(.text+0x130): undefined reference to `errno'
> semaphore.o:semaphore.c:(.text+0x14): undefined reference to `errno'
> semaphore.o:semaphore.c:(.text+0x2c): more undefined references to `errno' 
> follow
> semaphore.o:semaphore.c:(.text+0x32c): undefined reference to 
> `ptw32_relmillisecs'
> semaphore.o:semaphore.c:(.text+0x3ec): undefined reference to `errno'
> semaphore.o:semaphore.c:(.text+0x550): undefined reference to `errno'
> semaphore.o:semaphore.c:(.text+0x61c): undefined reference to `errno'
> semaphore.o:semaphore.c:(.text+0x6d4): undefined reference to `errno'

Looks like you are missing some .o's in the link command line.  Try to find
where the 'int errno' is defined as opposed to just declared (extern int errno).
Same for _beginthread/_endthread, they should be defined somewhere
in the pthreads WinCE port, as WinCE doesn't provide those.

> tsd.o:tsd.c:(.text+0x18): undefined reference to `WSAGetLastError'
> tsd.o:tsd.c:(.text+0x38): undefined reference to `WSASetLastError'

These come from ws2.dll, but you don't have it in the command line... (-lws2)

Cheers,
Pedro Alves


      __________________________________  Die etwas anderen Infos rund um das 
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pthreads-w32-2-8-0-WINCE.patch
Description: Text document

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