depends apr      "--with-apr=$INSTALL_ROOT/usr"      &&
depends apr-util "--with-apr-util=$INSTALL_ROOT/usr" &&
depends perl &&

optional_depends zlib                               \
                 ' --enable-deflate'                \
                 '--disable-deflate'                \
                 'for HTTP 1.1 traffic compression' &&
optional_depends db                                                  \
                 '   --with-berkeley-db'                             \
                 '--without-berkeley-db'                             \
                 'for Berkeley DB database as authentication source' &&
optional_depends SSL                        \
                 ' --enable-ssl'                \
                 '--disable-ssl'                \
                 'for SSL-enabled HTTP serving' &&
optional_depends openldap                                                   \
                 ' --enable-auth-ldap  --enable-ldap    --with-auth-ldap    --with-ldap' \
                 '--disable-auth-ldap --disable-ldap --without-auth-ldap --without-ldap' \
                 'for LDAP-based authentication'

.