Compiling wine on an x86-64 system

Robert Shearman rob at
Mon May 29 18:06:54 CDT 2006

Pavel Troller wrote:

>  I would like to ask for a help with wine compilation on an x86_64 system.
>  Today I successfully did the compilation, but the result is totally unusable.
>  I've supplied -m32 switch to both CFLAGS and LDFLAGS (I have to specify my
>own C/LDFLAGS because of custom -I/-L options to find various packages). gcc
>as well as winegcc correctly generated 32bit output.
>  There was just one error during compilation - it attempted to compile
>dlls/ntdll/signal_i386.c, which suffered from __NR_sigaction being undefined.
>Because my kernel headers are set up for a 64bit system, there is not such a
>define. __NR_rt_sigaction is defined instead. I'm not sure whether it's ok
>that wine tried to compile this file (it compiled signal_x86_64.c too, with
>no problems). I also don't know how to hack the kernel includes to define it
>correctly (I have just vanilla, unmodified set of native kernel headers for
>2.6.17-rc5 set up). So I hacked it by copying the appropriate #define 
>from asm-i386/unistd.h kernel header directly to signal_i386.c.
>  wine then compiled and installed without a glitch. However, any attempt to
>run it ends up with immediate return without any diagnosis. It even doesn't
>output its usage help.
>  I've already compiled a lot of "normal" programs for 32bit systems on my
>x86_64 system. However, wine resists.
>  What am I doing wrong ? What's the correct way ?

There are quite a few places that use i386 syscalls directly and you 
just fixed the one place it was detected. What you need to do is to copy 
a 32-bit unistd.h to asm-i386/unistd.h and make sure that it is included 
correctly by asm/unistd.h.

Rob Shearman

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