[Buildroot] [PATCH] ncurses: make host-ncurses use host terminfo

[Peter Korsgaard]

>>>>> "Hollis" == Hollis Blanchard <hollis_blanchard at mentor.com> writes:

 > # HG changeset patch
 > # User Hollis Blanchard <hollis_blanchard at mentor.com>
 > # Date 1531239381 25200
 > #      Tue Jul 10 09:16:21 2018 -0700
 > # Node ID 5f7fe697b92ac0145674a6c96aad0f787b4bae32
 > # Parent  d71314cdccf1993ccdb05cddb16a5491f0bf723e
 > ncurses: make host-ncurses use host terminfo

 > Host GDB suffers a serious problem: pressing backspace (or ^W ^U or any other
 > "delete" key) results in a plain space being printed instead, making the
 > command prompt almost completely unusable.

 > That's because it's using host-ncurses, which embeds a path for the terminfo
 > database into the library itself. That path ends up being something like
 > /home/hollisb/buildroot.git/output/host/share/terminfo, which obviously doesn't
 > generally exist other hosts. ('relocate-sdk.sh' cannot and does not edit
 > binaries like libncurses.so.6, so doesn't resolve this problem.)

 > /usr/share/terminfo is a far better path to use, since it almost certainly
 > exists on the host. Theoretically, it could be from a different ncurses version
 > with incompatible terminfo database format, but this doesn't seem to be a
 > problem in practice. (Future patches could address the theoretical problem if
 > it actually appears in real life.)

 > This change allows buildroot's host gdb, which uses ncurses 6.x, to work on
 > RHEL5, RHEL6, and RHEL7, which all provide terminfo from ncurses 5.x.

 > Signed-off-by: Hollis Blanchard <hollis_blanchard at mentor.com>

Committed to 2018.02.x and 2018.05.x, thanks.

-- 
Bye, Peter Korsgaard