strasharo:

So I pulled the imagebuilder from here:
https://downloads.openwrt.org/snapshots/targets/ar71xx/tiny/openwrt-imagebuilder-ar71xx-tiny.Linux-x86_64.tar.xz

And tried to build with the following commandline:

make clean;make image PROFILE=tl-wr703n-v1 PACKAGES="uhttpd uhttpd-mod-ubus libiwinfo-lua luci-base luci-app-firewall luci-mod-admin-full luci-theme-bootstrap kmod-rt2800-lib kmod-rt2800-usb rt2800-usb-firmware kmod-usb-storage kmod-fs-ext4 block-mount -ppp -ppp-mod-pppoe -ip6tables -odhcp6c -kmod-ipv6 -kmod-ip6tables -odhcpd-ipv6only"

However I got the following exception:

Configuring uhttpd.
Configuring uhttpd-mod-ubus.
Configuring kmod-ipt-offload.
Configuring urngd.
Collected errors:

• satisfy_dependencies_for: Cannot satisfy the following dependencies for luci-app-firewall:
• libip4tc2
• libip6tc2
• opkg_install_cmd: Cannot install package luci-app-firewall.
make[2]: *** [Makefile:156: package_install] Error 255
make[1]: *** [Makefile:117: _call_image] Error 2
make: *** [Makefile:196: image] Error 2

So I tried removing luci-app-firewall from the list of packages and ran with this command line:

make clean;make image PROFILE=tl-wr703n-v1 PACKAGES="uhttpd uhttpd-mod-ubus libiwinfo-lua luci-base luci-mod-admin-full luci-theme-bootstrap kmod-rt2800-lib kmod-rt2800-usb rt2800-usb-firmware kmod-usb-storage kmod-fs-ext4 block-mount -ppp -ppp-mod-pppoe -ip6tables -odhcp6c -kmod-ipv6 -kmod-ip6tables -odhcpd-ipv6only"

But I got the same exception for another package:

Configuring kmod-ipt-offload.
Configuring urngd.
Collected errors:

• satisfy_dependencies_for: Cannot satisfy the following dependencies for firewall:
• libip4tc2
• libip6tc2
• opkg_install_cmd: Cannot install package firewall.
make[2]: *** [Makefile:156: package_install] Error 255
make[1]: *** [Makefile:117: _call_image] Error 2
make: *** [Makefile:196: image] Error 2

I tried appending these package to the list of packages I want , but that didn't help:

make clean;make image PROFILE=tl-wr703n-v1 PACKAGES="uhttpd uhttpd-mod-ubus libiwinfo-lua luci-base luci-mod-admin-full luci-theme-bootstrap kmod-rt2800-lib kmod-rt2800-usb rt2800-usb-firmware kmod-usb-storage kmod-fs-ext4 block-mount libip4tc2 libip6tc2 -ppp -ppp-mod-pppoe -ip6tables -odhcp6c -kmod-ipv6 -kmod-ip6tables -odhcpd-ipv6only"

Got the same exception:
Configuring kmod-ipt-offload.
Configuring urngd.
Collected errors:

• opkg_install_cmd: Cannot install package libip4tc2.
• opkg_install_cmd: Cannot install package libip6tc2.
• satisfy_dependencies_for: Cannot satisfy the following dependencies for firewall:
• libip4tc2
• libip6tc2
• opkg_install_cmd: Cannot install package firewall.
make[2]: *** [Makefile:156: package_install] Error 255
make[1]: *** [Makefile:117: _call_image] Error 2
make: *** [Makefile:196: image] Error 2

I have also noticed the following when it was downloading the packages:

Installing ubox (2019-06-16-4df34a4d-3) to root...
Downloading http://downloads.openwrt.org/snapshots/packages/mips_24kc/base/ubox_2019-06-16-4df34a4d-3_mips_24kc.ipk
Unknown package 'libip4tc2'.
Unknown package 'libip6tc2'.
Installing base-files (198-r10242-3c401f4) to root...
Downloading http://downloads.openwrt.org/snapshots/targets/ar71xx/tiny/packages/base-files_198-r10242-3c401f4_mips_24kc.ipk

Am I doing something wrong there or there's some bug involved? I tried following these instructions: https://openwrt.org/docs/guide-user/additional-software/saving_space