From: Brian Behlendorf <behlendorf1@llnl.gov>
Date: Tue, 19 Apr 2011 17:39:31 +0000 (-0700)
Subject: Set -Wno-unused-but-set-variable globally
X-Git-Url: https://git.camperquake.de/gitweb.cgi?a=commitdiff_plain;ds=sidebyside;h=12c1acde76683108441827ae9affba1872f3afe5;hp=12c1acde76683108441827ae9affba1872f3afe5;p=zfs.git

Set -Wno-unused-but-set-variable globally

As of gcc-4.6 the option -Wunused-but-set-variable is enabled by
default.  While this is a useful warning there are numerous places
in the ZFS code when a variable is set and then only checked in an
ASSERT().  To avoid having to update every instance of this in the
code we now set -Wno-unused-but-set-variable to suppress the warning.

Additionally, when building with --enable-debug and -Werror set these
warning also become fatal.  We can reevaluate the suppression of these
error at a later time if it becomes an issue.  For now we are basically
just reverting to the previous gcc behavior.
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