K 10
svn:author
V 6
brooks
K 8
svn:date
V 27
2020-04-07T15:32:08.338145Z
K 7
svn:log
V 412
Allow the kernel to build with a compiler that sets -fno-common.

The mechanism that generates assym.inc and offset.inc depends on the
symbols in question being common. For now, simply force the object files
to be created with -fcommon.

-fno-common will be the default in GCC10/LLVM11.

Submitted by:	arichardson
Reviewed by:	kevans
Sponsored by:	DARPA
Differential Revision:	https://reviews.freebsd.org/D24322

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