In file included from /usr/include/SDL2/SDL.h:38:0,
                 from libavdevice/sdl2.c:26:
/usr/include/SDL2/SDL_cpuinfo.h:63:5: warning: 'HAVE_IMMINTRIN_H' is not defined, evaluates to 0 [-Wundef]
 #if HAVE_IMMINTRIN_H && !defined(SDL_DISABLE_IMMINTRIN_H)
     ^~~~~~~~~~~~~~~~
libavformat/dashenc.c: In function 'flush_init_segment':
libavformat/dashenc.c:598:49: warning: '%s' directive output may be truncated writing up to 1023 bytes into a region of size between 1 and 1024 [-Wformat-truncation=]
         snprintf(filename, sizeof(filename), '%s%s', c->dirname, os->initfile);
                                                 ^~
In file included from /usr/include/stdio.h:862:0,
                 from ./libavutil/common.h:38,
                 from ./libavutil/avutil.h:296,
                 from libavformat/dashenc.c:30:
/usr/include/arm-linux-gnueabihf/bits/stdio2.h:64:10: note: '__builtin___snprintf_chk' output between 1 and 2047 bytes into a destination of size 1024
   return __builtin___snprintf_chk (__s, __n, __USE_FORTIFY_LEVEL - 1,
          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
        __bos (__s), __fmt, __va_arg_pack ());
        ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
libavformat/dashenc.c: In function 'dash_init':
libavformat/dashenc.c:1584:49: warning: '%s' directive output may be truncated writing up to 1023 bytes into a region of size between 1 and 1024 [-Wformat-truncation=]
         snprintf(filename, sizeof(filename), '%s%s', c->dirname, os->initfile);
                                                 ^~
In file included from /usr/include/stdio.h:862:0,
                 from ./libavutil/common.h:38,
                 from ./libavutil/avutil.h:296,
                 from libavformat/dashenc.c:30:
/usr/include/arm-linux-gnueabihf/bits/stdio2.h:64:10: note: '__builtin___snprintf_chk' output between 1 and 2047 bytes into a destination of size 1024
   return __builtin___snprintf_chk (__s, __n, __USE_FORTIFY_LEVEL - 1,
          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
        __bos (__s), __fmt, __va_arg_pack ());
        ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
libavformat/dashenc.c: In function 'write_hls_media_playlist':
libavformat/dashenc.c:492:49: warning: 'media_' directive output may be truncated writing 6 bytes into a region of size between 1 and 1024 [-Wformat-truncation=]
         snprintf(playlist_name, string_size, '%smedia_%d.m3u8', base_url, id);
                                                 ^~~~~~
In file included from /usr/include/stdio.h:862:0,
                 from ./libavutil/common.h:38,
                 from ./libavutil/avutil.h:296,
                 from libavformat/dashenc.c:30:
/usr/include/arm-linux-gnueabihf/bits/stdio2.h:64:10: note: '__builtin___snprintf_chk' output between 13 and 1046 bytes into a destination of size 1024
   return __builtin___snprintf_chk (__s, __n, __USE_FORTIFY_LEVEL - 1,
          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
        __bos (__s), __fmt, __va_arg_pack ());
        ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
libavformat/dashenc.c: In function 'dash_flush':
libavformat/dashenc.c:1960:63: warning: '%s' directive output may be truncated writing up to 1023 bytes into a region of size between 1 and 1024 [-Wformat-truncation=]
             snprintf(os->full_path, sizeof(os->full_path), '%s%s', c->dirname, os->initfile);
                                                               ^~
In file included from /usr/include/stdio.h:862:0,
                 from ./libavutil/common.h:38,
                 from ./libavutil/avutil.h:296,
                 from libavformat/dashenc.c:30:
/usr/include/arm-linux-gnueabihf/bits/stdio2.h:64:10: note: '__builtin___snprintf_chk' output between 1 and 2047 bytes into a destination of size 1024
   return __builtin___snprintf_chk (__s, __n, __USE_FORTIFY_LEVEL - 1,
          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
        __bos (__s), __fmt, __va_arg_pack ());
        ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
libavformat/dashenc.c: In function 'dash_write_trailer':
libavformat/dashenc.c:492:49: warning: 'media_' directive output may be truncated writing 6 bytes into a region of size between 1 and 1024 [-Wformat-truncation=]
         snprintf(playlist_name, string_size, '%smedia_%d.m3u8', base_url, id);
                                                 ^~~~~~
libavformat/dashenc.c:492:46: note: directive argument in the range [0, 2147483647]
         snprintf(playlist_name, string_size, '%smedia_%d.m3u8', base_url, id);
                                              ^~~~~~~~~~~~~~~~~
In file included from /usr/include/stdio.h:862:0,
                 from ./libavutil/common.h:38,
                 from ./libavutil/avutil.h:296,
                 from libavformat/dashenc.c:30:
/usr/include/arm-linux-gnueabihf/bits/stdio2.h:64:10: note: '__builtin___snprintf_chk' output between 13 and 1045 bytes into a destination of size 1024
   return __builtin___snprintf_chk (__s, __n, __USE_FORTIFY_LEVEL - 1,
          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
        __bos (__s), __fmt, __va_arg_pack ());
        ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
libavformat/dashenc.c: In function 'dash_write_packet':
libavformat/dashenc.c:2257:59: warning: '%s' directive output may be truncated writing up to 1023 bytes into a region of size between 1 and 1024 [-Wformat-truncation=]
         snprintf(os->full_path, sizeof(os->full_path), '%s%s', c->dirname,
                                                           ^~
In file included from /usr/include/stdio.h:862:0,
                 from ./libavutil/common.h:38,
                 from ./libavutil/avutil.h:296,
                 from libavformat/dashenc.c:30:
/usr/include/arm-linux-gnueabihf/bits/stdio2.h:64:10: note: '__builtin___snprintf_chk' output between 1 and 2047 bytes into a destination of size 1024
   return __builtin___snprintf_chk (__s, __n, __USE_FORTIFY_LEVEL - 1,
          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
        __bos (__s), __fmt, __va_arg_pack ());
        ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from libavformat/http.c:32:0:
./libavutil/getenv_utf8.h: In function 'freeenv_utf8':
./libavutil/getenv_utf8.h:69:1: error: parameter name omitted
 static inline void freeenv_utf8(const char *)
 ^~~~~~
make: *** [libavformat/http.o] Error 1
make: *** Waiting for unfinished jobs....