Re: Building on Mingw64

[Daniel Holden <theonlydancingbanana at hotmail dot com>]

Hi,

Many Thanks - that managed to get it to compile.

I set up a small test program again and now I believe I have encountered 
the same issue I was getting when using Python ctypes. I will have to 
investigate a bit more before I have an idea of what exactly is going on 
but there is some very odd stuff and I may have found a bug.

For example upon calling the troublesome function using the ffi my 
program crashes and in the stack-trace is a call to a completely 
unrelated function in my library. I will try to get my head around what 
is happening and post a more detailed breakdown soon.

- Dan

On 09/11/2012 12:04, Luis Lavena wrote:
> On Fri, Nov 9, 2012 at 8:56 AM, Daniel Holden
> <theonlydancingbanana@hotmail.com> wrote:
> > Hi all,
> >
> > I'm having a little trouble building libffi on Windows 7 64 bit using
> > Mingw64 (http://mingw-w64.sourceforge.net/).
> >
> > Here is the error message on compile:
> >
> > libtool: compile:  gcc -DHAVE_CONFIG_H -I. -I.. -I. -I../include -Iinclude
> > -I..
> > src -DFFI_BUILDING -I. -I../include -Iinclude -I../src -DFFI_BUILDING -g -MT
> > sr
> > /x86/win32.lo -MD -MP -MF src/x86/.deps/win32.Tpo -c ../src/x86/win32.S
> > -DDLL_
> > XPORT -DPIC -o src/x86/.libs/win32.o
> > ../src/x86/win32.S: Assembler messages:
> > ../src/x86/win32.S:486: Error: invalid instruction suffix for `push'
> > ../src/x86/win32.S:497: Error: invalid instruction suffix for `push'
> > ../src/x86/win32.S:498: Error: invalid instruction suffix for `push'
> > ../src/x86/win32.S:643: Error: invalid instruction suffix for `pop'
> > ../src/x86/win32.S:652: Error: invalid instruction suffix for `push'
> > ../src/x86/win32.S:669: Error: invalid instruction suffix for `push'
> > ../src/x86/win32.S:768: Error: invalid instruction suffix for `pop'
> > ../src/x86/win32.S:780: Error: invalid instruction suffix for `pop'
> > ../src/x86/win32.S:797: Error: invalid instruction suffix for `push'
> > ../src/x86/win32.S:799: Error: invalid instruction suffix for `push'
> > ../src/x86/win32.S:814: Error: invalid instruction suffix for `push'
> > ../src/x86/win32.S:818: Error: invalid instruction suffix for `push'
> > ../src/x86/win32.S:918: Error: invalid instruction suffix for `pop'
> > ../src/x86/win32.S:919: Error: invalid instruction suffix for `pop'
> > ../src/x86/win32.S:934: Error: invalid instruction suffix for `push'
> > ../src/x86/win32.S:1032: Error: invalid instruction suffix for `pop'
> > make[3]: *** [src/x86/win32.lo] Error 1
> >
> > I know very little about assembly but this looks like a 32/64 bit issue. Is
> > MinGW64 supported as a compiler?
> Did you use the configure script and provided the host?
>
> configure --host=x86_64-w64-mingw32?
>
> Because that is required to enable the 64bits mode on my end.
>
> I've compiled libffi in 64bits mode without troubles with mingw-w64
> compiler, see binary packages mentioned here:
>
> https://groups.google.com/forum/?fromgroups=#!topic/rubyinstaller/Lp-OukkdGQE
>
> The 64bits version was obtained using tdm64 variant of mingw-w64, but
> is mingw-w64 at the end. The trick is always configure with the right
> host flag.
>
> Let us know if that helps.
> --
> Luis Lavena
> AREA 17
> -
> Perfection in design is achieved not when there is nothing more to add,
> but rather when there is nothing more to take away.
> Antoine de Saint-Exupéry