ac_add_options --enable-default-toolkit=cocoa
ac_add_options --disable-tests
ac_add_options --enable-crypto
ac_add_options --disable-mailnews
ac_add_options --disable-ldap
ac_add_options --disable-accessibility
ac_add_options --disable-jsd
ac_add_options --enable-plaintext-editor-only
ac_add_options --disable-mathml
ac_add_options --disable-xpinstall
ac_add_options --enable-extensions=cookie,xmlextras,universalchardet,typeaheadfind
ac_add_options --with-system-zlib
ac_add_options --disable-debug
ac_add_options --enable-optimize="-O3 -funroll-loops"
# ac_add_options --enable-optimize=-O2