depends -sub CXX gcc &&
depends PKG-CONFIG &&

optional_depends libsodium \
                 "--with-libsodium" \
                 "--without-libsodium" \
                 "to use libsodium instead of built-in tweetnacl" &&

optional_depends krb5 \
                 "--with-libgssapi_krb5" \
                 "--without-libgssapi_krb5" \
                 "for libgssapi_krb5 support" &&

optional_depends asciidoc \
                 "--with-docs" \
                 "--without-docs" \
                 "to build and install man pages (also requires ${SPELL_COLOR}xmlto${DEFAULT_COLOR})" &&

if is_depends_enabled ${SPELL} asciidoc; then
  depends xmlto
fi &&

optional_depends libunwind \
                 "--enable-libunwind" \
                 "--disable-libunwind" \
                 "for extensive debugging"
