Re: Two strange messages while building Emacs on MS-Windows

[Eli Zaretskii]

> From: Stefan Monnier <address@hidden>
> Cc: Eli Zaretskii <address@hidden>,  address@hidden
> Date: Sat, 08 Dec 2012 18:06:14 -0500
> 
> IIRC the Windows bootstrap code is not as well tuned, and byte-compiles
> all the .el files with the "bootstrap-emacs" instead of only compiling
> the preloaded files this way.  That might explain it (the
> "bootstrap-emacs" is an emacs binary built with the non-compiled Elisp
> files, so its Elisp functions are slower).

The more important reason is that byte compilation on Windows during
bootstrap is done sequentially, whereas on Unix it's done in parallel
(under "make -j").