K 10
svn:author
V 8
bdrewery
K 8
svn:date
V 27
2016-04-18T18:14:02.287301Z
K 7
svn:log
V 661
Cause an error during 'make install' if trying to compile with CC.

This is limited to src-tree builds, meaning not extended to ports or other
out-of-tree builds.

This will help ensure that read-only OBJDIRS will be respected at install-time
by causing a more consistent failure for those who don't use a read-only
OBJDIR.  It also will cause Jenkins to yell.  This is a better solution than
trying to see CC=false as has been attempted and discussed before.

Of course this is only relevant for files generated by CC.

Disable this for META_MODE since it will detect the CFLAGS/command
change and force a rebuild.

Sponsored by:	EMC / Isilon Storage Division

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