FreeBSD dependencies:

- compiler:
  pkg install gcc5
- autotools + pkgconf (for builds from svn/git)
  pkg install autotools pkgconf
- pkgconf might be needed to find libs in build from tarball too:
  pkg install pkgconf
- building with cmake + ninja instead of autotools:
  pkg install cmake ninja
- libev (cross-platform event loop library) if freebsd-kqueue from lighty isn't working
  pkg install libev
- stack traces on asserts:
  pkg install libunwind
- PCRE (mod_rewrite, mod_redirect, config conditionals, ...)
  pkg install pcre
- TLS support (and mod_auth {SHA1} support)
  pkg install libressl
  or (mysql-connector-c still requires openssl)
  pkg install openssl
- PHP for unit tests
  pkg install php56
- MySQL for mod_mysql_vhost
  pkg install mysql-connector-c
- File and directory monitoring
  pkg install gamin
  or
  pkg install fam
- Lua 5.1, 5.2 or 5.3 (mod_magnet and mod_cml)
  pkg install lua51  (or lua52 or lua53)
- memcached library (mod_cml and mod_trigger_b4_dl feature)
  pkg install libmemcached
- gdbm (mod_trigger_b4_dl feature)
  pkg install gdbm
- LDAP (mod_auth feature)
  pkg install openldap-client
- SQLite3 (required for most mod_webdav features)
  pkg install sqlite3
- XML (mod_webdav properties and locking)
  pkg install libxml2
- UUID library (mod_webdav locking)
  pkg install e2fsprogs-libuuid

Configure:

To help autotools find libraries and headers:
CPPFLAGS=-I/usr/local/include LDFLAGS=-L/usr/local/lib ./configure ...

With ssl the compiler might warn about OPENSSL_NO_KRB5 redefinitions, just
configure "--with-kerberos5" for now.