[FFmpeg-user] Report Error during Configuration

[けつせいご]

After I run ./configure in cmd, an error message popped after a moment:
./configure: line 4088: 11882 Abort trap: 6           $pkg_config --version > /dev/null 2>&1
nasm/yasm not found or too old. Use --disable-x86asm for a crippled build.

If you think configure made a mistake, make sure you are using the latest
version from Git.  If the latest version fails, report the problem to the
ffmpeg-user at ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
Include the log file "ffbuild/config.log" produced by configure as this will help
solve the problem.

Attached is the log. Your help would be greatly appreciated.