Why am I always getting dependency errors using Image Builder?

[Fr3nZy]

sudo apt-get update
sudo apt-get -y install build-essential libncurses5-dev libncursesw5-dev zlib1g-dev gawk git gettext libssl-dev xsltproc wget unzip python
umask 0022
git clone https://git.openwrt.org/openwrt/openwrt.git
cd openwrt
./scripts/feeds update -a
./scripts/feeds install -a

After running ./scripts/feeds install -a these dependency errors pop up everytime. What am I missing? I've found another topic describing this problem but there was no solution. I'm on Ubuntu 18.04 LTS.

Collecting package info: doneing...ils/xfsprogsuxtrlandlsoolssoolare-xdsl
Collecting target info: doneing...ux/zynqangioe
WARNING: Makefile 'package/utils/busybox/Makefile' has a dependency on 'libpam', which does not exist
WARNING: Makefile 'package/utils/busybox/Makefile' has a build dependency on 'libpam', which does not exist
WARNING: Makefile 'package/network/utils/curl/Makefile' has a dependency on 'libgnutls', which does not exist
WARNING: Makefile 'package/network/utils/curl/Makefile' has a dependency on 'libopenldap', which does not exist
WARNING: Makefile 'package/network/utils/curl/Makefile' has a dependency on 'libidn2', which does not exist
WARNING: Makefile 'package/network/utils/curl/Makefile' has a dependency on 'libssh2', which does not exist
WARNING: Makefile 'package/boot/kexec-tools/Makefile' has a dependency on 'liblzma', which does not exist
WARNING: Makefile 'package/network/services/lldpd/Makefile' has a dependency on 'libnetsnmp', which does not exist
WARNING: Makefile 'package/network/utils/nftables/Makefile' has a dependency on 'jansson', which does not exist

[fantom-x]

This is not the image builder. These are not errors, but warnings so can be ignored.

[Fr3nZy]

Sooo what this called?? and will it give me the same results? I just need one single custom image for one device and then i'm done with it. It's compiling as I'm writing this and it's taking forever.

[fantom-x]

@Fr3nZy

it's taking forever.

This is the difference: Image builder is using precompiled packages and can get you a new firmware file in less then five minutes. You are actually compiling from source and it can take several hours depending on your computer.