ffmpeg - Unknown OS 'msys_nt-6.1'. using Mingw on win7 64bit -


i try compile ffmpeg source using msys2 , mingw i'm using win7 64 bit . using .

$ ./configure --enable-shared 

i'm getting error:

unknown os 'msys_nt-6.1'.  if think configure made mistake, make sure using latest version git.  if latest version fails, report problem ffmpeg-user@ffmpeg.org mailing list or irc #ffmpeg on irc.freenode.net. include log file "config.log" produced configure solve problem. 

looking in config.log see ( end of log ):

gcc -std=c99 -wall -o3 -c -o /tmp/ffconf.fnjeluiu.o /tmp/ffconf.e8djygjm.c check_code cc  int test[2*(sizeof(void *) > 4) - 1] check_cc begin /tmp/ffconf.e8djygjm.c     1   int main(void) { int test[2*(sizeof(void *) > 4) - 1]; return 0; } end /tmp/ffconf.e8djygjm.c gcc -d_isoc99_source -d_file_offset_bits=64 -d_largefile_source -std=c99 -c -o /tmp/ffconf.fnjeluiu.o /tmp/ffconf.e8djygjm.c g:/msys64/tmp/ffconf.e8djygjm.c: in function 'main': g:/msys64/tmp/ffconf.e8djygjm.c:1:22: error: size of array 'test' negative  int main(void) { int test[2*(sizeof(void *) > 4) - 1]; return 0; }                       ^ check_cpp_condition stddef.h defined(__x86_64__) check_cpp begin /tmp/ffconf.e8djygjm.c     1   #include <stddef.h>     2   #if !(defined(__x86_64__))     3   #error "unsatisfied condition: defined(__x86_64__)"     4   #endif end /tmp/ffconf.e8djygjm.c gcc -d_isoc99_source -d_file_offset_bits=64 -d_largefile_source -std=c99 -e -o /tmp/ffconf.fnjeluiu.o /tmp/ffconf.e8djygjm.c g:/msys64/tmp/ffconf.e8djygjm.c:3:2: error: #error "unsatisfied condition: defined(__x86_64__)"  #error "unsatisfied condition: defined(__x86_64__)"   ^ unknown os 'msys_nt-6.1'.  

what did miss ? did wrong ? thanks


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