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docs/manual: add documentation on Config.in.host

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+ rearrange the structure a bit by adding a new paragraph for the Config
files

Signed-off-by: Jan Heylen <heyleke@gmail.com>
[ThomasDS:
  - clarify commit title
  - add list continuations to fix indentation of Config.in.host details]
Signed-off-by: Thomas De Schampheleire <thomas.de.schampheleire@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
This commit is contained in:
Jan Heylen 2015-03-11 09:09:58 +01:00 committed by Thomas Petazzoni
parent 164ac197fe
commit 1b3ac72d0f
1 changed files with 46 additions and 4 deletions
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50
docs/manual/adding-packages-directory.txt
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@ -11,12 +11,18 @@ Some packages have been grouped by topic in a sub-directory:
one of these categories, then create your package directory in these. one of these categories, then create your package directory in these.
New subdirectories are discouraged, however. New subdirectories are discouraged, however.
=== Config files
=== +Config.in+ file For the package to be displayed in the configuration tool, you need to
create a Config file in your package directory. There are two types:
+Config.in+ and +Config.in.host+.
Then, create a file named +Config.in+. This file will contain the ==== +Config.in+ file
option descriptions related to our +libfoo+ software that will be used
and displayed in the configuration tool. It should basically contain: For packages used on the target, create a file named +Config.in+. This
file will contain the option descriptions related to our +libfoo+ software
that will be used and displayed in the configuration tool. It should basically
contain:
--------------------------- ---------------------------
config BR2_PACKAGE_LIBFOO config BR2_PACKAGE_LIBFOO
@ -49,6 +55,42 @@ supposed to contain anything but the 'bare' name of the package.
source "package/libfoo/Config.in" source "package/libfoo/Config.in"
-------------------------- --------------------------
==== +Config.in.host+ file
Some packages also need to be built for the host system. There are two
options here:
* The host package is only required to satisfy build-time
dependencies of one or more target packages. In this case, add
+host-foo+ to the target package's +BAR_DEPENDENCIES+ variable. No
+Config.in.host+ file should be created.
* The host package should be explicitly selectable by the user from
the configuration menu. In this case, create a +Config.in.host+ file
for that host package:
+
---------------------------
config BR2_PACKAGE_HOST_FOO
bool "host foo"
help
This is a comment that explains what foo for the host is.
http://foosoftware.org/foo/
---------------------------
+
The same coding style and options as for the +Config.in+ file are valid.
+
Finally you have to add your new +libfoo/Config.in.host+ to
+package/Config.in.host+. The files included there are 'sorted alphabetically'
and are 'NOT' supposed to contain anything but the 'bare' name of the package.
+
--------------------------
source "package/foo/Config.in.host"
--------------------------
+
The host package will then be available from the +Host utilities+ menu.
[[depends-on-vs-select]] [[depends-on-vs-select]]
==== Choosing +depends on+ or +select+ ==== Choosing +depends on+ or +select+