mediatomb with --enable-libjs on current

Hello,

I'm trying to build mediatomb-b66dc1f.tar.xz with --enable-libjs with the slackbuild from Ponce repository. Modified mediatomb.slackbuild file:
Code:./configure --disable-silent-rules \
--prefix=/usr \
--libdir=/usr/lib${LIBDIRSUFFIX} \
--sysconfdir=/etc \
--localstatedir=/var \
--mandir=/usr/man \
--enable-libjs \
--build=$ARCH-slackware-linuxi get the error
Code:checking for libjs >= 1.8.5... no
configure: WARNING: No package 'libjs' found
checking for mozjs185... no
configure: error: No package 'mozjs185' foundI'm running Slackware current full update Sun Jul 5. Is anyone succesfully build Mediatomb with js support ?

Help appreciated.