@${MAKE} -C vcl fails

[michbsd]

Hi,

Running make in the vcl sub-dir fails:

[...]
rules/user-agent.vcl: || req.http.user-agent == "VadixBot"
rules/user-agent.vcl: || req.http.user-agent == "WebVulnCrawl.blogspot.com/1.0 libwww-perl/5.803"
rules/user-agent.vcl: || req.http.user-agent == "Wells Search II"
rules/user-agent.vcl: || req.http.user-agent == "WEP Search 00"

*** Failed target: check
*** Failed command: ../tools/check_variables
*** Error code 1

Stop.
make: stopped in /root/work/varnish-vmods/VSF/vcl
Global:.ERROR_TARGET = check
Applying[MAKE_PRINT_VAR_ON_ERROR] :@ to ""
Modifier pattern: "v"
Modifier pattern: "$v='${$v}'
"
Result[MAKE_PRINT_VAR_ON_ERROR] of :@ is ""

[michbsd]

FreeBSD 10.1-REL
varnish4-4.1.3

❯ gmake -v
GNU Make 4.2.1
Built for amd64-portbld-freebsd10.1