No built-dep Ubuntu16 but apt-get install does find whats needed --- why?

Why is build-dep not working for limesuite ? is this a 64bit Ubuntu16 issue ?

kc7noaa@odroid64:~$ sudo apt-get install limesuite
Reading package lists… Done
Building dependency tree
Reading state information… Done
The following packages were automatically installed and are no longer required:
libcec4 libgles1-mesa libhdhomerun2 libmircommon5 libnfs8 libp8-platform2
linux-tools-4.4.0-67 linux-tools-4.4.0-67-generic linux-tools-4.4.0-79
linux-tools-4.4.0-79-generic linux-tools-4.4.0-80
linux-tools-4.4.0-80-generic linux-tools-4.4.0-81
linux-tools-4.4.0-81-generic
Use ‘sudo apt autoremove’ to remove them.
The following additional packages will be installed:
gcc-5-base:armhf glib-networking:armhf libatk-bridge2.0-0:armhf
libatk1.0-0:armhf libatspi2.0-0:armhf libavahi-client3:armhf
libavahi-common-data:armhf libavahi-common3:armhf
libboost-filesystem1.58.0:armhf libboost-system1.58.0:armhf libbsd0:armhf
libcairo-gobject2:armhf libcairo2:armhf libcapnp-0.5.3:armhf
libcolord2:armhf libcups2:armhf libdatrie1:armhf libdbus-1-3:armhf
libdrm-amdgpu1:armhf libdrm-freedreno1:armhf libdrm-nouveau2:armhf
libdrm-radeon1:armhf libdrm2:armhf libedit2:armhf libegl1-mesa:armhf
libelf1:armhf libepoxy0:armhf libexpat1:armhf libffi6:armhf
libfontconfig1:armhf libfreetype6:armhf libgbm1:armhf
libgdk-pixbuf2.0-0:armhf libgl1-mesa-dri:armhf libgl1-mesa-glx:armhf
libglapi-mesa:armhf libglib2.0-0:armhf libgmp10:armhf libgnutls30:armhf
libgraphite2-3:armhf libgssapi-krb5-2:armhf libgtk-3-0:armhf
libgtk2.0-0:armhf libharfbuzz0b:armhf libhogweed4:armhf libice6:armhf
libicu55:armhf libidn11:armhf libjbig0:armhf libjpeg-turbo8:armhf
libjpeg8:armhf libjson-glib-1.0-0:armhf libk5crypto3:armhf
libkeyutils1:armhf libkrb5-3:armhf libkrb5support0:armhf liblcms2-2:armhf
liblimesuite17.06-1:armhf libllvm3.8:armhf libmirclient9:armhf
libmircommon7:armhf libmircore1:armhf libmirprotobuf3:armhf libnettle6:armhf
libnotify4:armhf libp11-kit0:armhf libpango-1.0-0:armhf
libpangocairo-1.0-0:armhf libpangoft2-1.0-0:armhf libpixman-1-0:armhf
libpng12-0:armhf libprotobuf-lite9v5:armhf libproxy1v5:armhf
librest-0.7-0:armhf libsm6:armhf libsoup-gnome2.4-1:armhf libsoup2.4-1:armhf
libsqlite3-0:armhf libstdc++6:armhf libtasn1-6:armhf libthai0:armhf
libtiff5:armhf libtxc-dxtn-s2tc0:armhf libusb-1.0-0:armhf
libwayland-client0:armhf libwayland-cursor0:armhf libwayland-egl1-mesa:armhf
libwayland-server0:armhf libwxbase3.0-0v5:armhf libwxgtk3.0-0v5:armhf
libx11-6:armhf libx11-xcb1:armhf libxau6:armhf libxcb-dri2-0:armhf
libxcb-dri3-0:armhf libxcb-glx0:armhf libxcb-present0:armhf
libxcb-render0:armhf libxcb-shm0:armhf libxcb-sync1:armhf
libxcb-xfixes0:armhf libxcb1:armhf libxcomposite1:armhf libxcursor1:armhf
libxdamage1:armhf libxdmcp6:armhf libxext6:armhf libxfixes3:armhf
libxi6:armhf libxinerama1:armhf libxkbcommon0:armhf libxml2:armhf
libxrandr2:armhf libxrender1:armhf libxshmfence1:armhf libxxf86vm1:armhf
limesuite-images:armhf limesuite-images17.06:armhf limesuite-udev:armhf
notification-daemon:armhf
Suggested packages:
gnutls-bin:armhf krb5-doc:armhf krb5-user:armhf librsvg2-common:armhf
gvfs:armhf
Recommended packages:
xml-core:armhf
The following NEW packages will be installed:
gcc-5-base:armhf glib-networking:armhf libatk-bridge2.0-0:armhf
libatk1.0-0:armhf libatspi2.0-0:armhf libavahi-client3:armhf
libavahi-common-data:armhf libavahi-common3:armhf
libboost-filesystem1.58.0:armhf libboost-system1.58.0:armhf libbsd0:armhf
libcairo-gobject2:armhf libcairo2:armhf libcapnp-0.5.3:armhf
libcolord2:armhf libcups2:armhf libdatrie1:armhf libdbus-1-3:armhf
libdrm-amdgpu1:armhf libdrm-freedreno1:armhf libdrm-nouveau2:armhf
libdrm-radeon1:armhf libdrm2:armhf libedit2:armhf libegl1-mesa:armhf
libelf1:armhf libepoxy0:armhf libexpat1:armhf libffi6:armhf
libfontconfig1:armhf libfreetype6:armhf libgbm1:armhf
libgdk-pixbuf2.0-0:armhf libgl1-mesa-dri:armhf libgl1-mesa-glx:armhf
libglapi-mesa:armhf libglib2.0-0:armhf libgmp10:armhf libgnutls30:armhf
libgraphite2-3:armhf libgssapi-krb5-2:armhf libgtk-3-0:armhf
libgtk2.0-0:armhf libharfbuzz0b:armhf libhogweed4:armhf libice6:armhf
libicu55:armhf libidn11:armhf libjbig0:armhf libjpeg-turbo8:armhf
libjpeg8:armhf libjson-glib-1.0-0:armhf libk5crypto3:armhf
libkeyutils1:armhf libkrb5-3:armhf libkrb5support0:armhf liblcms2-2:armhf
liblimesuite17.06-1:armhf libllvm3.8:armhf libmirclient9:armhf
libmircommon7:armhf libmircore1:armhf libmirprotobuf3:armhf libnettle6:armhf
libnotify4:armhf libp11-kit0:armhf libpango-1.0-0:armhf
libpangocairo-1.0-0:armhf libpangoft2-1.0-0:armhf libpixman-1-0:armhf
libpng12-0:armhf libprotobuf-lite9v5:armhf libproxy1v5:armhf
librest-0.7-0:armhf libsm6:armhf libsoup-gnome2.4-1:armhf libsoup2.4-1:armhf
libsqlite3-0:armhf libstdc++6:armhf libtasn1-6:armhf libthai0:armhf
libtiff5:armhf libtxc-dxtn-s2tc0:armhf libusb-1.0-0:armhf
libwayland-client0:armhf libwayland-cursor0:armhf libwayland-egl1-mesa:armhf
libwayland-server0:armhf libwxbase3.0-0v5:armhf libwxgtk3.0-0v5:armhf
libx11-6:armhf libx11-xcb1:armhf libxau6:armhf libxcb-dri2-0:armhf
libxcb-dri3-0:armhf libxcb-glx0:armhf libxcb-present0:armhf
libxcb-render0:armhf libxcb-shm0:armhf libxcb-sync1:armhf
libxcb-xfixes0:armhf libxcb1:armhf libxcomposite1:armhf libxcursor1:armhf
libxdamage1:armhf libxdmcp6:armhf libxext6:armhf libxfixes3:armhf
libxi6:armhf libxinerama1:armhf libxkbcommon0:armhf libxml2:armhf
libxrandr2:armhf libxrender1:armhf libxshmfence1:armhf libxxf86vm1:armhf
limesuite:armhf limesuite-images:armhf limesuite-images17.06:armhf
limesuite-udev:armhf notification-daemon:armhf
0 upgraded, 121 newly installed, 0 to remove and 0 not upgraded.
Need to get 40.0 MB of archives.
After this operation, 196 MB of additional disk space will be used.
Do you want to continue? [Y/n] n
Abort.
kc7noaa@odroid64:~$ sudo apt-get build-dep limesuite
Reading package lists… Done
E: Unable to find a source package for limesuite
kc7noaa@odroid64:~$

This is why.

Check /etc/apt/sources.list and/or the files in /etc/apt/sources.list.d for a line like:

deb-src Index of /myriadrf/drivers/ubuntu xenial main

If you don’t have a deb-src line or it’s commented out, you won’t get source packages and therefore build-dep won’t be able to resolve build dependencies.