K 10
svn:author
V 7
zeising
K 8
svn:date
V 27
2020-08-19T08:28:38.362159Z
K 7
svn:log
V 170
MFH: r545237

cad/iverilog: Fix build with -fno-common

Fix the build with -fno-common, which is the default in llvm 11 (and gcc10).

Approved by:	ports-secteam (joenum)

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