Yes, trying to install your libclang.
OSX Sierra.
I have Xcode and all that goes with it installed (my day job is IoT projects with accompanying iPhone apps and occasionally web services development).
Homebrew packages installed include...
appledoc gmp nettle
autoconf gnutls nmap
aws-elasticbeanstalk gobject-introspection node
awscli graphite2 openssl
basset_ios harfbuzz openssl@1.1
bazel icu4c p11-kit
boot2docker imagemagick pango
c-ares jpeg pcre
cairo libcroco pixman
cmake libffi pkg-config
coreutils libgcrypt python
cvs libgpg-error python3
dfu-util libpng rbenv
docker librsvg readline
fontconfig libssh2 redis
freetype libtasn1 ruby-build
gdbm libtiff sqlite
gdk-pixbuf libtool unar
geoip libunistring wget
gettext libusb wireshark
ghostscript little-cms2 xz
glib lua