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Warning: "/usr/include/ncursesw" is unsafe for cross-compilation

From: Joakim Tjernlund
Subject: Warning: "/usr/include/ncursesw" is unsafe for cross-compilation
Date: Fri, 12 Sep 2014 09:52:10 +0200

In Gentoo[1] one can see this warning when cross building ncurses with 
unicode support:
  cc1: warning: include location "/usr/include/ncursesw" is unsafe for 
cross-compilation [-Wpoison-system-directories]
This is because ncurses adds -I\${includedir} to CPPFLAGS, simply removing 
this makes it build
without this warning.

[1] https://bugs.gentoo.org/show_bug.cgi?id=522586


    Why are there no proper releases of ncurses? I can just find a lot of 
    Is the a public repo somewhere?

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