===>  License BSD3CLAUSE accepted by the user
===>   libsrtp-1.5.4 depends on file: /usr/local/sbin/pkg - found
===> Fetching all distfiles required by libsrtp-1.5.4 for building
===>  Extracting for libsrtp-1.5.4
=> SHA256 Checksum OK for cisco-libsrtp-v1.5.4_GH0.tar.gz.
===>  Patching for libsrtp-1.5.4
===>   libsrtp-1.5.4 depends on executable: gmake - found
===>   libsrtp-1.5.4 depends on package: pkgconf>=1.3.0_1 - found
===>  Configuring for libsrtp-1.5.4
configure: loading site script /usr/ports/Templates/config.site
checking for gcc... cc
checking whether the C compiler works... yes
checking for C compiler default output file name... a.out
checking for suffix of executables... 
checking whether we are cross compiling... no
checking for suffix of object files... o
checking whether we are using the GNU C compiler... yes
checking whether cc accepts -g... yes
checking for cc option to accept ISO C89... none needed
checking how to run the C preprocessor... cpp
checking for ar... ar
checking the archiver (ar) interface... ar
checking for ranlib... ranlib
checking for a BSD-compatible install... /usr/bin/install -c
checking for a sed that does not truncate output... (cached) /usr/bin/sed
checking for grep that handles long lines and -e... (cached) /usr/bin/grep
checking for egrep... (cached) /usr/bin/egrep
checking for ANSI C header files... (cached) yes
checking for sys/types.h... (cached) yes
checking for sys/stat.h... (cached) yes
checking for stdlib.h... (cached) yes
checking for string.h... (cached) yes
checking for memory.h... (cached) yes
checking for strings.h... (cached) yes
checking for inttypes.h... (cached) yes
checking for stdint.h... (cached) yes
checking for unistd.h... (cached) yes
checking whether byte ordering is bigendian... no
checking build system type... amd64-portbld-freebsd11.1
checking host system type... amd64-portbld-freebsd11.1
checking whether cc accepts -Werror... yes
checking whether cc accepts -fPIC... yes
checking whether cc accepts -Wno-language-extension-token... yes
checking for ANSI C header files... (cached) yes
checking for unistd.h... (cached) yes
checking for byteswap.h... (cached) no
checking for stdint.h... (cached) yes
checking for sys/uio.h... yes
checking for inttypes.h... (cached) yes
checking for sys/types.h... (cached) yes
checking for machine/types.h... no
checking for sys/int_types.h... no
checking for sys/socket.h... (cached) yes
checking for netinet/in.h... (cached) yes
checking for arpa/inet.h... (cached) yes
checking for windows.h... no
checking for int8_t... yes
checking for uint8_t... yes
checking for int16_t... (cached) yes
checking for uint16_t... yes
checking for int32_t... (cached) yes
checking for uint32_t... yes
checking for uint64_t... yes
checking size of unsigned long... 8
checking size of unsigned long long... 8
checking for an ANSI C-conforming const... yes
checking for inline... inline
checking for size_t... (cached) yes
checking for socket... yes
checking for inet_aton... (cached) yes
checking for usleep... (cached) yes
checking for sigaction... (cached) yes
checking whether to enable debug logging in all modules... no
checking pkg-config is at least version 0.9.0... yes
checking whether to leverage OpenSSL crypto... yes
checking for user specified OpenSSL directory... no
checking for libcrypto >= 1.0.1... no
===>  Script "configure" failed unexpectedly.
Please report the problem to tijl@FreeBSD.org [maintainer] and attach the
"/wrkdirs/libsrtp-0cipiertest-port/work/libsrtp-1.5.4/config.log" including
the output of the failure of your make command. Also, it might be a good idea
to provide an overview of all packages installed on your system (e.g. a
/usr/local/sbin/pkg-static info -g -Ea).
*** Error code 1

Stop.
make: stopped in /libsrtp-0cipiertest-port
1