ftp/curl strange ?

[KIRIYAMA Kazuhiko]

Hi, list

Does ftp/curl port strange? 

# (cd /var/ports/jdtpkx/ftp/curl ; make -V PKGNAME)
make: Bad conditional expression ` == base ' in  == base ?BASE :NONE
make: "/var/ports/jdtpkx/Mk/bsd.options.mk" line 443: Undefined variable "${${SSL_DEFAULT} HTTP2 OPENSSL PROXY RESOLV THREADED_RESOLVER TLS_SRP base"
make: Fatal errors encountered -- cannot continue
make: stopped in /usr/ports/ftp/curl
# 

This machine is a behyve vm and ports tree(/usr/ports),
packages directory(/var/ports/packages) and distfiles
directory(/var/ports/distfiles) are nfs mounted from
vm.pis. PORTSDIR is symlinked to /usr/ports and WRKDIRPREFIX
is /var/ports.

# df
Filesystem                         1K-blocks     Used       Avail Capacity  Mounted on
/dev/vtbd0p2                        27405052  2124676    23087972     8%    /
devfs                                      1        1           0   100%    /dev
vm.pis:/.dake                      828741392 40440588   722001496     5%    /.dake
vm.pis:/usr/ports                12984059552  1584368 12982475184     0%    /usr/ports
vm.pis:/var/ports/distfiles      12983515428  1040244 12982475184     0%    /var/ports/distfiles
vm.pis:/var/ports/packages/12.0C 12982745548   270364 12982475184     0%    /var/ports/packages
# cat /etc/make.conf
PORTSDIR?=              /var/ports/jdtpkx
INDEXDIR?=              /var/ports/jdtpkx
WRKDIRPREFIX?=          /var/ports
PACKAGES?=              /var/ports/packages
DISTDIR?=               /var/ports/distfiles
BATCH?=                 yes
DEFAULT_VERSIONS=       perl5=5.26 ruby=2.4
COMPILER_TYPE=          clang
USE_PACKAGE_DEPENDS=    yes
.export USE_PACKAGE_DEPENDS
DISABLE_VULNERABILITIES=yes
OVERRIDE_LINUX_NONBASE_PORTS=c6
# 

ports revision is 449815.

root at vm.pis:~ # svnlite info /usr/ports/
Path: /usr/ports
Working Copy Root Path: /usr/ports
URL: http://svn.freebsd.org/ports/head
Relative URL: ^/head
Repository Root: http://svn.freebsd.org/ports
Repository UUID: 35697150-7ecd-e111-bb59-0022644237b5
Revision: 449815
Node Kind: directory
Schedule: normal
Last Changed Author: bsam
Last Changed Rev: 449815
Last Changed Date: 2017-09-14 07:51:04 +0900 (Thu, 14 Sep 2017)

root at vm.pis:~ # 

Does anyone suggest?

---
KIRIYAMA Kazuhiko