[Buildroot] [Bug 14996] Too many directories in BR2_EXTERNAL causes hang during make

[bugzilla@busybox.net]

https://bugs.busybox.net/show_bug.cgi?id=14996

--- Comment #7 from Yann E. MORIN <yann.morin.1998@free.fr> ---
David, All,

OK, I could reproduce the issue with a much less convoluted example than your
script.

The issue does only lanifests itself when actually trying to configure
Buildroot.
Listing the defconfig like I was doing was not enough to trigger the issue.

What's weird, is that using 5 external trees does not exhibit the issue; it is
very fast. But using 6 trees triggers the issue, and make is insanely long (I
did
not even wait for it to finish, in fact).

Note however that your comments are a bit confusing. You are talking about
external
packages, but that is incorrect; it is about _br2-external trees_. Also, your
script
is very confusing, because it does very convoluted things (instead of providing
a git
tree that was already fully prepared). But since we don't need it to reproduce
the
issue (and thus to test a fix), I'm not going to comment further. ;-)

I'll lok into devising a fix...

Regards,
Yann E. MORIN.

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