[FFmpeg-devel] [PATCH] configure: If vfwcap_indev disabled, don't do vfw32 checks; if enabled, require vfw32

[Michael Niedermayer]

On Tue, May 16, 2017 at 03:38:32PM -0700, Aaron Levinson wrote:
> Signed-off-by: Aaron Levinson <alevinsn at aracnet.com>
> ---
>  configure | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/configure b/configure
> index 7980d92..49f91ac 100755
> --- a/configure
> +++ b/configure
> @@ -6013,10 +6013,10 @@ check_header sys/videoio.h
>  check_code cc sys/videoio.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
>  
>  check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
> -check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
> +disabled vfwcap_indev || { require vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32 &&
>  # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
>  # w32api 3.12 had it defined wrong
> -check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
> +                           check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines; }
>  

this breaks build on linux
ERROR: vfw32 not found

If you think configure made a mistake, make sure you are using the latest
version from Git.  If the latest version fails, report the problem to the
ffmpeg-user at ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
Include the log file "ffbuild/config.log" produced by configure as this will help
solve the problem.

[...]
-- 
Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

If you drop bombs on a foreign country and kill a hundred thousand
innocent people, expect your government to call the consequence
"unprovoked inhuman terrorist attacks" and use it to justify dropping
more bombs and killing more people. The technology changed, the idea is old.
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