Extend the gas-preprocessor section with basic installation instructions.

Originally committed as revision 24713 to svn://svn.ffmpeg.org/ffmpeg/trunk
15 years ago · 06a2ba230b
--- a/doc/general.texi
+++ b/doc/general.texi
@@ -790,7 +790,8 @@ bash ./configure

 MacOS X on PowerPC or ARM (iPhone) requires a preprocessor from
@url{http://github.com/yuvi/gas-preprocessor} to build the optimized
 assembler functions.
 assembler functions. Just download the Perl script and put it somewhere
 in your PATH, FFmpeg's configure will pick it up automatically.

@section Windows