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docs/manual: add section about br2-external skeleton

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Signed-off-by: Brandon Maier <brandon.maier@rockwellcollins.com>
[yann.morin.1998@free.fr:
  - alphabetical order (skeleton before toolchain)
  - leave the list of choices 'open'
]
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
This commit is contained in:
Brandon Maier 2020-10-13 17:36:02 -05:00 committed by Yann E. MORIN
parent 8a06daa1a0
commit c71dbcf34a
1 changed files with 26 additions and 4 deletions
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30
docs/manual/customize-outside-br.txt
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@ -191,9 +191,9 @@ tree.
For some packages, Buildroot provides a choice between two (or more)
implementations of API-compatible such packages. For example, there is
a choice to choose either libjpeg ot jpeg-turbo, and another choice
between openssl or libressl. Finally, there is a choice to select one
of the known, pre-configured toolchains.
a choice to choose either libjpeg ot jpeg-turbo; there is one between
openssl or libressl; there is one to select one of the known,
pre-configured toolchains...
It is possible for a br2-external to extend those choices, by providing
a set of files that define those alternatives:
@ -201,7 +201,8 @@ a set of files that define those alternatives:
* +provides/toolchains.in+ defines the pre-configured toolchains, which
will then be listed in the toolchain selection;
* +provides/jpeg.in+ defines the alternative libjpeg implementations;
* +provides/openssl.in+ defines the alternative openssl implementations.
* +provides/openssl.in+ defines the alternative openssl implementations;
* +provides/skeleton.in+ defines the alternative skeleton implementations.
===== Free-form content
@ -301,6 +302,27 @@ illustration, of course):
| |$(eval $(autotools-package))
| `----
|
|- provides/skeleton.in
| |config BR2_ROOTFS_SKELETON_MINE
| | bool "my custom skeleton"
| | select BR2_PACKAGE_SKELETON_MINE
| `----
|- package/skeleton-mine/Config.in
| |config BR2_PACKAGE_SKELETON_MINE
| | bool
| | select BR2_PACKAGE_HAS_SKELETON
| |
| |config BR2_PACKAGE_PROVIDES_SKELETON
| | default "skeleton-mine" if BR2_PACKAGE_SKELETON_MINE
| `----
|- package/skeleton-mine/skeleton-mine.mk
| |SKELETON_MINE_ADD_TOOLCHAIN_DEPENDENCY = NO
| |SKELETON_MINE_ADD_SKELETON_DEPENDENCY = NO
| |SKELETON_MINE_PROVIDES = skeleton
| |SKELETON_MINE_INSTALL_STAGING = YES
| |$(eval $(generic-package))
| `----
|
|- provides/toolchains.in
| |config BR2_TOOLCHAIN_EXTERNAL_MINE
| | bool "my custom toolchain"