Re: minutes of ESC call ...

>     + turn on mergedlibs & LTO for Windows - any objections ? (Michael)

Jesús already replied about the LTO bit, thanks for reviewing.

As for --enable-mergelibs, it doesn't look good. Apparently that has
never been tried for Windows? Or at least not recently? The option has
a help message which says it works for Linux only. OK, it mentioned
Android, too, which was wrong information, so maybe the lack of
mention of Windows is also just a mistake, and mergelibs has worked
for Windows at some stage? (We do build one single "merged" library
for each Android app (and one single "merged" executable for each iOS
app), but not using the "mergelibs" mechanism.)

Anyway, I tried building on Windows with --enable-mergelibs=all, did
not succeed. Build stops when linking the chartcontrollerlo library,
no imerged.lib found. And indeed I don't see any *merge*.lib anywhere
in workdir or instdir.

This once again shows how harmful it is to have tons of configuration
options. They don't get tested and bit-rot. Each binary option doubles
the number of possible configurations. If some change in how LO is
built is good, then we should just do it, unconditionally (on some or
all platforms, depending on case), not make it into an option that
will bit-rot.

--tml