[FFmpeg-devel] [PATCH] Make compilable with VS2015

wm4 nfxjfg at googlemail.com
Fri Mar 6 22:13:15 CET 2015


On Fri, 6 Mar 2015 22:06:25 +0100
Hendrik Leppkes <h.leppkes at gmail.com> wrote:

> On Fri, Mar 6, 2015 at 10:00 PM, wm4 <nfxjfg at googlemail.com> wrote:
> > On Fri, 6 Mar 2015 14:59:43 -0500
> > "Ronald S. Bultje" <rsbultje at gmail.com> wrote:
> >
> >> Hi,
> >>
> >> On Fri, Mar 6, 2015 at 2:42 PM, Peter <dravorek at googlemail.com> wrote:
> >>
> >> > From c72344d2b1dc8b087e5da904724c959005f36f4b Mon Sep 17 00:00:00 2001
> >> > From: Peter Tissen <dravorek at gmail.com>
> >> > Date: Fri, 6 Mar 2015 19:39:27 +0100
> >> > Subject: [PATCH] Make compilable with VS2015
> >> >
> >> > So Visual Studio 2015 has some breaking changes regarding the C
> >> > runtime. In short, they made C99 compatable runtime.
> >> > Refer to
> >> > http://blogs.msdn.com/b/vcblog/archive/2014/06/18/crt-features-fixes-and-breaking-changes-in-visual-studio-14-ctp1.aspx
> >> >
> >> > Signed-off-by: Peter Tissen <dravorek at gmail.com>
> >> > ---
> >> >  configure            | 14 +++++++++-----
> >> >  libavutil/internal.h |  2 +-
> >> >  2 files changed, 10 insertions(+), 6 deletions(-)
> >> >
> >> > diff --git a/configure b/configure
> >> > index ce745d2..1ea2032 100755
> >> > --- a/configure
> >> > +++ b/configure
> >> > @@ -3531,7 +3531,9 @@ probe_cc(){
> >> >          _flags='-nologo'
> >> >          _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS
> >> > -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
> >> >          if [ $pfx = hostcc ]; then
> >> > -            append _cflags -Dsnprintf=_snprintf
> >> > +            if [ -z "$cl_major_ver" ] || [ $cl_major_ver -le 18 ]; then
> >> > +                append _cflags -Dsnprintf=_snprintf
> >> > +            fi
> >>
> >>
> >> Oh wow that's amazing! They fixed it! Hurray! I'm seriously happy.
> >
> > They still require calling _snprintf, though?
> >
> 
> No, one of the hunks remove this define if the compiler is > 18
> VS2015 should implement a fully C standard compliant snprintf. They
> also entirely revamped the implementation of all printf-related
> functions.

Amazing.


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