[FFmpeg-devel] [PATCH] fix: 'make' with mingw32

Michael Niedermayer michaelni at gmx.at
Tue Aug 12 10:42:24 CEST 2014


On Tue, Aug 12, 2014 at 10:11:08AM +0200, Hendrik Leppkes wrote:
> On Tue, Aug 12, 2014 at 5:48 AM, spanknebel.borken at t-online.de
> <spanknebel.borken at t-online.de> wrote:
> > From 48e4da7d6476ac2a62cc462478b8ccf4d0c45361 Mon Sep 17 00:00:00 2001
> > From: Youka <spanknebel.borken at t-online.de>
> > Date: Tue, 12 Aug 2014 04:32:02 +0200
> > Subject: [PATCH] fix: 'make' with mingw32
> >
> > Older mingw32 compilers (not mingw-64, but tdm [default by IDE C::B]) don't auto-include pthread headers, so struct timespec & nanosleep are missing for compilation of libavutil/time.c.
> > ---
> >  libavutil/time.c | 4 ++++
> >  1 file changed, 4 insertions(+)
> >
> > diff --git a/libavutil/time.c b/libavutil/time.c
> > index ce4552e..a286fca 100644
> > --- a/libavutil/time.c
> > +++ b/libavutil/time.c
> > @@ -31,6 +31,10 @@
> >  #endif
> >  #if HAVE_WINDOWS_H
> >  #include <windows.h>
> > +#if HAVE_NANOSLEEP
> > +#include <pthread.h>
> > +#include <pthread_time.h>
> > +#endif
> >  #endif
> >
> >  #include "time.h"
> > --
> > 1.8.4.msysgit.0
> 
> Since when is nanosleep a pthread function?
> 
> If its not the usual posix nanosleep, maybe configure should just be
> fixed to disable it instead?
> I saw a patch on the libav side that did just that, seems like a

> better solution to me, since Windows has other sleep functions which
> get used instead then.

do these other functions provide the same performance on windows ?
googling a bit doesnt lead to a conclusive awnser to that but
at least one page claimed usleep() to be only millisecond precission
and one that its "obsolete"
(on windows)


[...]

-- 
Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

it is not once nor twice but times without number that the same ideas make
their appearance in the world. -- Aristotle
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