optional_depends  gettext                        \
                  "--enable-nls"                 \
                  "--disable-nls"                \
                  "for Native Language Support"  &&

optional_depends  bzip2                \
                  "--enable-bzip2"     \
                  "--disable-bzip2"    \
                  "for bzip2 support"  &&

optional_depends  curl                 \
                  "--with-libcurl"      \
                  "--without-libcurl"     \
                  "curl support"      &&

optional_depends  openldap            \
                  "--enable-ldap"     \
                  "--disable-ldap"    \
                  "for LDAP support"  &&

optional_depends  nasm                     \
                  "--enable-asm"           \
                  "--disable-asm"          \
                  "for assembler modules"  &&

optional_depends  libusb                                                \
                  ""                                                    \
                  "--without-libusb"                                    \
                  "to use the integrated CCID smartcard reader driver"
