cmake build fails

[Paul Goyette <paul%whooppee.com@localhost>]

With pkgsrc as of just a few hours ago (2018-06-07 at 00:40:56 UTC)

===> Creating toolchain wrappers for cmake-3.11.3
sed: unknown option -- b
Usage:  sed [-aElnru] command [file ...]
        sed [-aElnru] [-e command] [-f command_file] [-I[extension]]
            [-i[extension]] [file ...]
*** Error code 1



+------------------+--------------------------+----------------------------+
| Paul Goyette     | PGP Key fingerprint:     | E-mail addresses:          |
| (Retired)        | FA29 0E3B 35AF E8AE 6651 | paul at whooppee dot com   |
| Kernel Developer | 0786 F758 55DE 53BA 7731 | pgoyette at netbsd dot org |
+------------------+--------------------------+----------------------------+