2 // vim: set syntax=asciidoc:
7 Understanding when a full rebuild is necessary
8 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
10 OpenADK tries to detect what part of the system should be rebuilt when the
11 system configuration is changed through +make menuconfig+. In some cases it
12 automatically rebuilt packages, but sometimes just a warning is printed to the
13 terminal, that a rebuild is necessary to make the changes an effect. If strange
14 things are happening, the autodetection might have not worked correctly, then
15 you should consider to rebuild everything. If you are following development you
16 should always do a full rebuild after fetching updates via +git pull+. It is
17 not always required, but if anything fails, you are on your own.
18 Use following to do a full rebuild without refetching distfiles:
21 $ make cleandir && make
24 Understanding how to rebuild packages
25 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
27 In OpenADK you can rebuild a single package with:
29 $ make package=<pkgname> clean package
32 It will automatically remove all files added to the staging target directory
33 +target_*+. If you just want to restart compilation process, after making
34 some fixes in +build_*/w-<pkgname>-<pkgversion>/+, just do:
36 $ make package=<pkgname> package
39 If you are happy with your changes to the package sources, you can automatically
40 generate a patch, which will be saved in +package/<pkgname>/patches and automatically
41 applied on the next clean rebuild:
43 $ make package=<pkgname> update-patches
46 The newly created patches will be opened in $EDITOR, so you can add some comments to
47 the top of the file, before the diff.
53 If you intend to do an offline build and just want to download
54 all sources that you previously selected in the configurator
61 You can now disconnect or copy the content of your +dl+
62 directory to the build-host.
69 OpenADK also honors some environment variables, when they are passed
72 * +ADK_TARGET_ARCH+, the architecture of the target system
73 * +ADK_TARGET_SYSTEM+, the embedded target system name
74 * +ADK_TARGET_LIBC+, the C library for the target system
75 * +ADK_VERBOSE+, verbose build, when set to 1
77 An example that creates a configuration file for Raspberry PI with all
78 software packages enabled, but not included in the resulting firmware image:
81 $ make ADK_TARGET_ARCH=arm ADK_TARGET_SYSTEM=raspberry-pi ADK_TARGET_LIBC=musl allmodconfig
84 This is often used in the development process of a target system, to verify that
85 all packages are compilable.