[FFmpeg-trac] #5868(build system:new): Cygwin64 build fails for ffserver.o

FFmpeg trac at avcodec.org
Tue Sep 27 20:25:10 EEST 2016

#5868: Cygwin64 build fails for ffserver.o
             Reporter:  MDavis       |                     Type:  defect
               Status:  new          |                 Priority:  normal
            Component:  build        |                  Version:  git-
  system                             |  master
             Keywords:               |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
 See http://fate.ffmpeg.org/history.cgi?slot=x86_64-win10-cygwin-gcc-5.4.0
 Failing since revision N-81748-g47ea6f5, last checked on N-81780-g4a05d2e
 % git reset --hard "origin/N-81748-g47ea6f5"
 HEAD is now at 47ea6f5 lavd: drop SDL1 device and SDL1 support
 % cd ../build
 % ../src/configure --enable-gpl --enable-avresample
 % make
 src/ffserver.c: In function ‘main’:
 src/ffserver.c:4003:5: error: implicit declaration of function ‘sigaction’
      sigaction(SIGCHLD, &sigact, 0);
 cc1: some warnings being treated as errors
 make: *** [/tmp/fate/build/src/common.mak:60: ffserver.o] Error 1
 Fixed by using
 % make CFLAGS="-Wno-error=implicit-function-declaration"
 (build finishes normally)

Ticket URL: <https://trac.ffmpeg.org/ticket/5868>
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