the latest version of security/mbedtls introduce some typo error as described here
https://github.com/ARMmbed/mbedtls/issues/1358

the issue was fixed in source but not in the port

this problem prevent at least to compile www/hiawatha successfully:

===>  Building for hiawatha-10.7_1
[1/14] /usr/bin/cc  -I. -I/usr/local/include/libxml2 -I/usr/local/include -O2 -Wall -Wextra -O2 -pipe -march=bdver3  -fstack-protector -fno-strict-aliasing -O2 -g -DNDEBUG -MD -MT CMakeFiles/hiawatha.dir/src/tomahawk.c.o -MF CMakeFiles/hiawatha.dir/src/tomahawk.c.o.d -o CMakeFiles/hiawatha.dir/src/tomahawk.c.o   -c src/tomahawk.c
[2/14] /usr/bin/cc  -I. -I/usr/local/include/libxml2 -I/usr/local/include -O2 -Wall -Wextra -O2 -pipe -march=bdver3  -fstack-protector -fno-strict-aliasing -O2 -g -DNDEBUG -MD -MT CMakeFiles/hiawatha.dir/src/tls.c.o -MF CMakeFiles/hiawatha.dir/src/tls.c.o.d -o CMakeFiles/hiawatha.dir/src/tls.c.o   -c src/tls.c
FAILED: CMakeFiles/hiawatha.dir/src/tls.c.o
/usr/bin/cc  -I. -I/usr/local/include/libxml2 -I/usr/local/include -O2 -Wall -Wextra -O2 -pipe -march=bdver3  -fstack-protector -fno-strict-aliasing -O2 -g -DNDEBUG -MD -MT CMakeFiles/hiawatha.dir/src/tls.c.o -MF CMakeFiles/hiawatha.dir/src/tls.c.o.d -o CMakeFiles/hiawatha.dir/src/tls.c.o   -c src/tls.c
src/tls.c:348:42: error: use of undeclared identifier 'MBEDTLS_DHM_RFC5114_MODP_2048_P'
                mbedtls_ssl_conf_dh_param(*tls_config, MBEDTLS_DHM_RFC5114_MODP_2048_P, MBEDTLS_DHM_RFC5114_MODP_2048_G);
                                                       ^
1 error generated.
[3/14] /usr/bin/cc  -I. -I/usr/local/include/libxml2 -I/usr/local/include -O2 -Wall -Wextra -O2 -pipe -march=bdver3  -fstack-protector -fno-strict-aliasing -O2 -g -DNDEBUG -MD -MT CMakeFiles/hiawatha.dir/src/userconfig.c.o -MF CMakeFiles/hiawatha.dir/src/userconfig.c.o.d -o CMakeFiles/hiawatha.dir/src/userconfig.c.o   -c src/userconfig.c
[4/14] /usr/bin/cc  -I. -I/usr/local/include/libxml2 -I/usr/local/include -O2 -Wall -Wextra -O2 -pipe -march=bdver3  -fstack-protector -fno-strict-aliasing -O2 -g -DNDEBUG -MD -MT CMakeFiles/hiawatha.dir/src/toolkit.c.o -MF CMakeFiles/hiawatha.dir/src/toolkit.c.o.d -o CMakeFiles/hiawatha.dir/src/toolkit.c.o   -c src/toolkit.c
[5/14] /usr/bin/cc  -I. -I/usr/local/include/libxml2 -I/usr/local/include -O2 -Wall -Wextra -O2 -pipe -march=bdver3  -fstack-protector -fno-strict-aliasing -O2 -g -DNDEBUG -MD -MT CMakeFiles/hiawatha.dir/src/workers.c.o -MF CMakeFiles/hiawatha.dir/src/workers.c.o.d -o CMakeFiles/hiawatha.dir/src/workers.c.o   -c src/workers.c
ninja: build stopped: subcommand failed.
===> Compilation failed unexpectedly.
Try to set MAKE_JOBS_UNSAFE=yes and rebuild before reporting the failure to
the maintainer.
*** Error code 1

Stop.
make[1]: stopped in /usr/ports/www/hiawatha
*** Error code 1