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ncurses specify -DXOPEN_SOURCE values in its .pc files, break third-part


From: Francois Tigeot
Subject: ncurses specify -DXOPEN_SOURCE values in its .pc files, break third-party applications
Date: Sat, 21 Oct 2017 13:23:40 +0200
User-agent: Mutt/1.9.1 (2017-09-22)

Hi,

I recently tried to build a recent version of qemu on a DragonFly system.
The compilation failed due to a missing O_CLOEXEC definition.

This was not very surprising given qemu used -D_POSIX_C_SOURCE=200112L
-D_XOPEN_SOURCE=600 in its compilation flags, preventing features more
recent than the old X/Open 6 standard from being made available.

Now, qemu uses ncurses and these flags came from the ncurses .pc pkgconfig
files.

The attached configure patch fixed the issue for me.

-- 
Francois Tigeot

Attachment: patch-configure.txt
Description: Text document


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