Hi,

Thanks for your response.

1. You are right.
The error message with the git head in my previous email looked like
an encoding issue. So I have done git clone at ubuntu 18.01 again and I got the 
same error message I had
for FFmpeg 4.3.1 like followings :

src/libavformat/udp.c:296:28: error: member reference base type
'__be32' (aka 'unsigned int') is not a structure or union
mreqs.imr_multiaddr.s_addr = ((struct sockaddr_in *)add...
~~~~~~~~~~~~~~~~~~~^~~~~~~
src/libavformat/udp.c:298:32: error: assigning to '__be32'
(aka 'unsigned int') from incompatible type 'struct in_addr'
...= ((struct sockaddr_in *)local_addr)->sin_addr;
^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
src/libavformat/udp.c:300:32: error: member reference base type
'__be32' (aka 'unsigned int') is not a structure or union
mreqs.imr_interface.s_addr= INADDR_ANY;
~~~~~~~~~~~~~~~~~~~^~~~~~~
src/libavformat/udp.c:301:29: error: member reference base type
'__be32' (aka 'unsigned int') is not a structure or union
mreqs.imr_sourceaddr.s_addr = ((struct sockaddr_in *)&s...
~~~~~~~~~~~~~~~~~~~~^~~~~~~
4 errors generated.



2. I have attached the first part of log, when I have tried to build the FFmpeg 
at the end of this email.

3. When I tried to use FFmpeg 4.0.6, I do not have any problem to build it. I 
have even done simple smoke test successfully for our final product.



Thanks in any case.
     On Monday, August 31, 2020, 09:28:21 PM EDT, Ted Park 
<kumowoon1...@gmail.com> wrote:  
 
 Hi,

 I will try to explain one step at a time.


Can you explain one step at a time, as in explain the steps you took (one
command line at a time)? Maybe it’s because I’ve never cross compiled
ffmpeg but your mentioning cmake makes me think you are messing up the
build system. Like there’s no info about your c environment.

 3. build error message, when I have used git head :
>
>
>
>
>
>  /ffmpeg/configure: /bin/sh^M: bad interpreter: No such file or directory


Did you do anything after checking out the repository before running
configure (except cd’ing into the directory)? That carriage return I think
I’ve seen when a super long list of arguments were given but probably the
issue is something else.

Regards,
Ted
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C compiler                clang
C library                 bionic
host C compiler           gcc
host C library            glibc
ARCH                      c (armv7-a)
big-endian                no
runtime cpu detection     yes
debug symbols             yes
strip symbols             yes
optimize for size         no
optimizations             yes
static                    no
shared                    yes
postprocessing support    no
network support           yes
threading support         pthreads
safe bitstream reader     yes
texi2html enabled         no
perl enabled              yes
pod2man enabled           yes
makeinfo enabled          no
makeinfo supports HTML    no

External libraries:
openssl                 zlib

External libraries providing hardware acceleration:
v4l2_m2m

Libraries:
avcodec                 avformat                swscale
avdevice                avutil
avfilter                swresample

Programs:

Enabled decoders:
aac                     flac                    pgmyuv
aac_fixed               flashsv                 pgssub
aac_latm                flashsv2                pgx
aasc                    flic                    pictor
ac3                     flv                     pixlet
ac3_fixed               fmvc                    pjs
acelp_kelvin            fourxm                  png
adpcm_4xm               fraps                   ppm
adpcm_adx               frwu                    prores
adpcm_afc               g2m                     prosumer
adpcm_agm               g723_1                  psd
adpcm_aica              g729                    ptx
adpcm_argo              gdv                     qcelp
adpcm_ct                gif                     qdm2
adpcm_dtk               gremlin_dpcm            qdmc
adpcm_ea                gsm                     qdraw
adpcm_ea_maxis_xa       gsm_ms                  qpeg
adpcm_ea_r1             h261                    qtrle
adpcm_ea_r2             h263                    r10k
adpcm_ea_r3             h263_v4l2m2m            r210
adpcm_ea_xas            h263i                   ra_144
adpcm_g722              h263p                   ra_288
adpcm_g726              h264                    ralf
adpcm_g726le            h264_v4l2m2m            rasc
adpcm_ima_alp           hap                     rawvideo
adpcm_ima_amv           hca                     realtext
adpcm_ima_apc           hcom                    rl2
adpcm_ima_apm           hevc                    roq
adpcm_ima_cunning       hnm4_video              roq_dpcm
adpcm_ima_dat4          hq_hqa                  rpza
adpcm_ima_dk3           hqx                     rscc
adpcm_ima_dk4           huffyuv                 rv10
adpcm_ima_ea_eacs       hymt                    rv20
adpcm_ima_ea_sead       iac                     rv30
adpcm_ima_iss           idcin                   rv40
adpcm_ima_mtf           idf                     s302m
adpcm_ima_oki           iff_ilbm                sami
adpcm_ima_qt            ilbc                    sanm
adpcm_ima_rad           imc                     sbc
adpcm_ima_smjpeg        imm4                    scpr
adpcm_ima_ssi           imm5                    screenpresso
adpcm_ima_wav           indeo2                  sdx2_dpcm
adpcm_ima_ws            indeo3                  sgi
adpcm_ms                indeo4                  sgirle
adpcm_mtaf              indeo5                  sheervideo
adpcm_psx               interplay_acm           shorten
adpcm_sbpro_2           interplay_dpcm          sipr
adpcm_sbpro_3           interplay_video         siren
adpcm_sbpro_4           jacosub                 smackaud
adpcm_swf               jpeg2000                smacker
adpcm_thp               jpegls                  smc
adpcm_thp_le            jv                      smvjpeg
adpcm_vima              kgv1                    snow
adpcm_xa                kmvc                    sol_dpcm
adpcm_yamaha            lagarith                sonic
adpcm_zork              loco                    sp5x
agm                     lscr                    speedhq
aic                     m101                    srgc
alac                    mace3                   srt
alias_pix               mace6                   ssa
als                     magicyuv                stl
amrnb                   mdec                    subrip
amrwb                   metasound               subviewer
amv                     microdvd                subviewer1
anm                     mimic                   sunrast
ansi                    mjpeg                   svq1
ape                     mjpegb                  svq3
apng                    mlp                     tak
aptx                    mmvideo                 targa
aptx_hd                 motionpixels            targa_y216
arbc                    movtext                 tdsc
ass                     mp1                     text
asv1                    mp1float                theora
asv2                    mp2                     thp
atrac1                  mp2float                tiertexseqvideo
atrac3                  mp3                     tiff
atrac3al                mp3adu                  tmv
atrac3p                 mp3adufloat             truehd
atrac3pal               mp3float                truemotion1
atrac9                  mp3on4                  truemotion2
aura                    mp3on4float             truemotion2rt
aura2                   mpc7                    truespeech
avrn                    mpc8                    tscc
avrp                    mpeg1_v4l2m2m           tscc2
avs                     mpeg1video              tta
avui                    mpeg2_v4l2m2m           twinvq
ayuv                    mpeg2video              txd
bethsoftvid             mpeg4                   ulti
bfi                     mpeg4_v4l2m2m           utvideo
bink                    mpegvideo               v210
binkaudio_dct           mpl2                    v210x
binkaudio_rdft          msa1                    v308
bintext                 mscc                    v408
bitpacked               msmpeg4v1               v410
bmp                     msmpeg4v2               vb
bmv_audio               msmpeg4v3               vble
bmv_video               msrle                   vc1
brender_pix             mss1                    vc1_v4l2m2m
c93                     mss2                    vc1image
cavs                    msvideo1                vcr1
ccaption                mszh                    vmdaudio
cdgraphics              mts2                    vmdvideo
cdtoons                 mv30                    vmnc
cdxl                    mvc1                    vorbis
cfhd                    mvc2                    vp3
cinepak                 mvdv                    vp4
clearvideo              mvha                    vp5
cljr                    mwsc                    vp6
cllc                    mxpeg                   vp6a
comfortnoise            nellymoser              vp6f
cook                    notchlc                 vp7
cpia                    nuv                     vp8
cscd                    on2avc                  vp8_v4l2m2m
cyuv                    opus                    vp9
dca                     paf_audio               vp9_v4l2m2m
dds                     paf_video               vplayer
derf_dpcm               pam                     vqa
dfa                     pbm                     wavpack
dirac                   pcm_alaw                wcmv
dnxhd                   pcm_bluray              webp
dolby_e                 pcm_dvd                 webvtt
dpx                     pcm_f16le               wmalossless
dsd_lsbf                pcm_f24le               wmapro
dsd_lsbf_planar         pcm_f32be               wmav1
dsd_msbf                pcm_f32le               wmav2
dsd_msbf_planar         pcm_f64be               wmavoice
dsicinaudio             pcm_f64le               wmv1
dsicinvideo             pcm_lxf                 wmv2
dss_sp                  pcm_mulaw               wmv3
dst                     pcm_s16be               wmv3image
dvaudio                 pcm_s16be_planar        wnv1
dvbsub                  pcm_s16le               wrapped_avframe
dvdsub                  pcm_s16le_planar        ws_snd1
dvvideo                 pcm_s24be               xan_dpcm
dxa                     pcm_s24daud             xan_wc3
dxtory                  pcm_s24le               xan_wc4
dxv                     pcm_s24le_planar        xbin
eac3                    pcm_s32be               xbm
eacmv                   pcm_s32le               xface
eamad                   pcm_s32le_planar        xl
eatgq                   pcm_s64be               xma1
eatgv                   pcm_s64le               xma2
eatqi                   pcm_s8                  xpm
eightbps                pcm_s8_planar           xsub
eightsvx_exp            pcm_u16be               xwd
eightsvx_fib            pcm_u16le               y41p
escape124               pcm_u24be               ylc
escape130               pcm_u24le               yop
evrc                    pcm_u32be               yuv4
exr                     pcm_u32le               zero12v
ffv1                    pcm_u8                  zerocodec
ffvhuff                 pcm_vidc                zlib
ffwavesynth             pcx                     zmbv
fic                     pfm
fits                    pgm

Enabled encoders:

Enabled hwaccels:

Enabled parsers:
aac                     dvdsub                  opus
aac_latm                flac                    png
ac3                     g723_1                  pnm
adx                     g729                    rv30
av1                     gif                     rv40
avs2                    gsm                     sbc
bmp                     h261                    sipr
cavsvideo               h263                    tak
cook                    h264                    vc1
dca                     hevc                    vorbis
dirac                   jpeg2000                vp3
dnxhd                   mjpeg                   vp8
dpx                     mlp                     vp9
dvaudio                 mpeg4video              webp
dvbsub                  mpegaudio               xma
dvd_nav                 mpegvideo

Enabled demuxers:
aa                      ico                     pcm_s24le
aac                     idcin                   pcm_s32be
ac3                     idf                     pcm_s32le
acm                     iff                     pcm_s8
act                     ifv                     pcm_u16be
adf                     ilbc                    pcm_u16le
adp                     image2                  pcm_u24be
ads                     image2_alias_pix        pcm_u24le
adx                     image2_brender_pix      pcm_u32be
aea                     image2pipe              pcm_u32le
afc                     image_bmp_pipe          pcm_u8
aiff                    image_dds_pipe          pcm_vidc
aix                     image_dpx_pipe          pjs
alp                     image_exr_pipe          pmp
amr                     image_gif_pipe          pp_bnk
amrnb                   image_j2k_pipe          pva
amrwb                   image_jpeg_pipe         pvf
anm                     image_jpegls_pipe       qcp
apc                     image_pam_pipe          r3d
ape                     image_pbm_pipe          rawvideo
apm                     image_pcx_pipe          realtext
apng                    image_pgm_pipe          redspark
aptx                    image_pgmyuv_pipe       rl2
aptx_hd                 image_pgx_pipe          rm
aqtitle                 image_pictor_pipe       roq
argo_asf                image_png_pipe          rpl
asf                     image_ppm_pipe          rsd
asf_o                   image_psd_pipe          rso
ass                     image_qdraw_pipe        rtp
ast                     image_sgi_pipe          rtsp
au                      image_sunrast_pipe      s337m
av1                     image_svg_pipe          sami
avi                     image_tiff_pipe         sap
avr                     image_webp_pipe         sbc
avs                     image_xpm_pipe          sbg
avs2                    image_xwd_pipe          scc
bethsoftvid             ingenient               sdp
bfi                     ipmovie                 sdr2
bfstm                   ircam                   sds
bink                    iss                     sdx
bintext                 iv8                     segafilm
bit                     ivf                     ser
bmv                     ivr                     shorten
boa                     jacosub                 siff
brstm                   jv                      sln
c93                     kux                     smacker
caf                     kvag                    smjpeg
cavsvideo               live_flv                smush
cdg                     lmlm4                   sol
cdxl                    loas                    sox
cine                    lrc                     spdif
codec2                  lvf                     srt
codec2raw               lxf                     stl
concat                  m4v                     str
data                    matroska                subviewer
daud                    mcc                     subviewer1
dcstr                   mgsts                   sup
derf                    microdvd                svag
dfa                     mjpeg                   swf
dhav                    mjpeg_2000              tak
dirac                   mlp                     tedcaptions
dnxhd                   mlv                     thp
dsf                     mm                      threedostr
dsicin                  mmf                     tiertexseq
dss                     mov                     tmv
dts                     mp3                     truehd
dtshd                   mpc                     tta
dv                      mpc8                    tty
dvbsub                  mpegps                  txd
dvbtxt                  mpegts                  ty
dxa                     mpegtsraw               v210
ea                      mpegvideo               v210x
ea_cdata                mpjpeg                  vag
eac3                    mpl2                    vc1
epaf                    mpsub                   vc1t
ffmetadata              msf                     vividas
filmstrip               msnwc_tcp               vivo
fits                    mtaf                    vmd
flac                    mtv                     vobsub
flic                    musx                    voc
flv                     mv                      vpk
fourxm                  mvi                     vplayer
frm                     mxf                     vqf
fsb                     mxg                     w64
fwse                    nc                      wav
g722                    nistsphere              wc3
g723_1                  nsp                     webm_dash_manifest
g726                    nsv                     webvtt
g726le                  nut                     wsaud
g729                    nuv                     wsd
gdv                     obu                     wsvqa
genh                    ogg                     wtv
gif                     oma                     wv
gsm                     paf                     wve
gxf                     pcm_alaw                xa
h261                    pcm_f32be               xbin
h263                    pcm_f32le               xmv
h264                    pcm_f64be               xvag
hca                     pcm_f64le               xwma
hcom                    pcm_mulaw               yop
hevc                    pcm_s16be               yuv4mpegpipe
hls                     pcm_s16le
hnm                     pcm_s24be

Enabled muxers:

Enabled protocols:
async                   httpproxy               rtmpte
cache                   https                   rtmpts
concat                  icecast                 rtp
crypto                  md5                     srtp
data                    mmsh                    subfile
ffrtmpcrypt             mmst                    tcp
ffrtmphttp              pipe                    tee
file                    prompeg                 tls
ftp                     rtmp                    udp
gopher                  rtmpe                   udplite
hls                     rtmps                   unix
http                    rtmpt

Enabled filters:

Enabled bsfs:
av1_frame_merge         null
h264_mp4toannexb        vp9_superframe_split

Enabled indevs:

Enabled outdevs:
fbdev                   v4l2

License: LGPL version 2.1 or later
~/hk_folder/code_repo/touchscreen_alexa_app/v1.18.0
~/hk_folder/code_repo/touchscreen_alexa_app/v1.18.0/debug/android-23/armeabi-v7a/ffmpeg
 ~/hk_folder/code_repo/touchscreen_alexa_app/v1.18.0

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