NAStronaut> export CC=gcc
NAStronaut> bash configure --prefix=usr --disable-avahi
Checking support/features
  checking for cc execinfo.h ...                    ok
  checking for cc -mmmx ...                         ok
  checking for cc -msse2 ...                        ok
  checking for cc getloadavg ...                    ok
  checking for cc atomic64 ...                      fail
  checking for cc lockowner ...                     fail
  checking for cc qsort_r ...                       ok
  checking for cc recvmmsg ...                      ok
  checking for cc libiconv ...                      fail
  checking for py module gzip ...                   ok
  checking for bzip2 ...                            ok
  checking for pkg openssl  ...                     ok (detected 0.9.8v)
  checking for cc linux/dvb/version.h ...           ok
  checking for cc libhdhomerun/hdhomerun.h ...      fail
  checking for pkg zlib  ...                        fail (detected <none>)
  checking for pkg liburiparser  ...                fail (detected <none>)
Package libavcodec was not found in the pkg-config search path.
Perhaps you should add the directory containing `libavcodec.pc'
to the PKG_CONFIG_PATH environment variable
No package 'libavcodec' found
  checking for ffmpeg libraries ...                 configure: line 312: test: -lt: unary operator expected
ok
  checking for pkg libavcodec >=55.18.102 ...       fail (detected <none>)
WARNING: none or old libav or libffmpeg libraries were detected
         * use --disable-libav or --enable-libffmpeg_static
         ** supported ffmpeg libs n1.2+
         ** supported libav  libs v10+
  checking for cc sys/inotify.h ...                 fail
  fetching dvb-scan files ...                       ok
  checking for pkg dbus-1  ...                      fail (detected <none>)

Compiler:
  Using C compiler:                        gcc
  Build for arch:                          i686

Binaries:
  Using PYTHON:                            python

Options:
  cwc                                      yes
  capmt                                    yes
  constcw                                  yes
  v4l                                      no
  linuxdvb                                 yes
  satip_client                             yes
  hdhomerun_client                         no
  hdhomerun_static                         no
  iptv                                     yes
  tsfile                                   yes
  dvbscan                                  yes
  timeshift                                yes
  trace                                    yes
  imagecache                               yes
  avahi                                    no
  zlib                                     no
  libav                                    no
  libffmpeg_static                         no
  inotify                                  no
  epoll                                    yes
  uriparser                                no
  ccache                                   no
  tvhcsa                                   yes
  bundle                                   no
  dvbcsa                                   no
  kqueue                                   no
  dbus_1                                   no
  android                                  no
  execinfo                                 yes
  mmx                                      yes
  sse2                                     yes
  getloadavg                               yes
  qsort_r                                  yes
  recvmmsg                                 yes
  py_gzip                                  yes
  bin_bzip2                                yes
  ssl                                      yes
  linuxdvbapi                              yes
  upnp                                     yes
  mpegts                                   yes
  mpegps                                   no
  mpegts_dvb                               yes

Packages:
  openssl                                  0.9.8v

Installation paths:
  Prefix:                                  usr
  Binaries:                                ${prefix}/bin
  Libraries:                               ${prefix}/lib
  Data files:                              ${prefix}/share
  Man pages:                               ${datadir}/man

Final Binary:
  /opt/tvheadend/build.linux/tvheadend

Tvheadend Data Directory:
  usr/share/tvheadend

NAStronaut> make
CC              src/version.o
cc1: error: unrecognized command line option "-Wunused-result"
make: *** [/opt/tvheadend/build.linux/src/version.o] Error 1