====== Advanced build options ======

===== Build faster =====

Build using several cores  ''make -j(n+1) where n=#CPUs'', For example:

  make -j4

===== Manual build =====

If you are rebuilding OpenWrt often, or don't want to use build.sh script, you can build manually.

First time building or when you want your feeds updated, run:

  ./scripts/feeds update -a
  ./scripts/feeds install -a
  
To set config to defaults:

  git checkout .config
  
Then finally build:

  make IGNORE_ERRORS=m

===== Customize your build =====

Run this after you updated your feeds:

  make menuconfig
  
to configure OpenWrt according your needs.

You should see configuration window like this: 

{{:carambola:2:carambola2_menuconfig.png?nolink&|}}

===== Build custom image without compiling =====

If you need firmware image that contains packages that are not in default image, but available in [[http://pkg.8devices.com|pkg.8devices.com]] repository - use Image Builder. No cross-compiling is required so build process is fast.

This example uses v2.8 release, use latest available when building.

  wget "http://pkg.8devices.com/carambola2/v2.8/OpenWrt-ImageBuilder-v2.8-ar71xx-generic.Linux-x86_64.tar.bz2"
  tar -xjvf OpenWrt-ImageBuilder-v2.8-ar71xx-generic.Linux-x86_64.tar.bz2
  cd OpenWrt-ImageBuilder-v2.8-ar71xx-generic.Linux-x86_64/

This adds ''luci tmux kmod-fs-ntfs'' packages, contents of ''files/'' directory to image and removes ''ppp ppp-mod-pppoe kmod-pppoe kmod-pppox'' packages that are in default image:

  make image PROFILE=CARAMBOLA2 PACKAGES="luci tmux kmod-fs-ntfs -ppp -ppp-mod-pppoe -kmod-pppoe -kmod-pppox" FILES=files/

Image will be available in ''bin/ar71xx'' folder.

More info: [[https://wiki.openwrt.org/doc/howto/obtain.firmware.generate]]

===== Build more packages =====

Use full config to build all packages available at [[http://pkg.8devices.com|pkg.8devices.com]]

  cp config_full .config
  make defconfig
  make IGNORE_ERRORS=m

===== More details =====

If there something goes wrong, this make argument outputs more details.

  make V=sc