[FFmpeg-devel] [PATCH] configure: Add toolchain-prefix option.

Reimar Döffinger Reimar.Doeffinger at gmx.de
Mon Jan 19 07:43:41 CET 2015

On 19.01.2015, at 03:05, Michael Niedermayer <michaelni at gmx.at> wrote:
> On Thu, Jan 01, 2015 at 10:00:25AM +0100, Reimar Döffinger wrote:
>> Useful to select e.g. between mingw32, 32-bit mingw64 and 64-bit mingw64
>> toolchains, which all are not cross-compilation toolchains.
>> Signed-off-by: Reimar Döffinger <Reimar.Doeffinger at gmx.de>
> is this intended for building with mingw* on windows ?
> if so it should be ok
> the patch just confused me a bit as i build with mingw64 (32&64bit)
> just fine on linux without any of this

Yes, but you have to specify --arch and --target-os, and not sure if disabling runtime-cpudetection would work etc.
It's even more annoying if you want to compile for 32 bit on a 64 bit system (you can use -m32 at least in some cases, but this seems simpler and more consistent).

> also maybe it could be more clearly documented what this is intended
> for

Ok, I'll try to improve the commit message, but where else to document it/how?
--help doesn't seem like a good place for long explanations (though maybe I can think of a better short explanation).
Maybe "select a different toolchain without cross-compiling, e.g. for compiling for i686 on a x86_64 system or with mingw64 on cygwin"?

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