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author | Kang-Che Sung | 2017-01-06 17:02:03 +0100 |
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committer | Denys Vlasenko | 2017-01-06 17:03:18 +0100 |
commit | 6cd0294725cf40a3ef0bb0a1dcc7a7044a85cbf5 (patch) | |
tree | edb6f1db0698b723ecef508c93e325ec62fd8639 /scripts | |
parent | b62ea34afed7d3bf60a6c8ef5a030fea52f55b10 (diff) | |
download | busybox-6cd0294725cf40a3ef0bb0a1dcc7a7044a85cbf5.zip busybox-6cd0294725cf40a3ef0bb0a1dcc7a7044a85cbf5.tar.gz |
ash: explicltly group ash options
This would makes all ash options indented inside "ash" in menuconfig.
It appears that menuconfig has a limit at tracking multiple dependency
lines like this (it looks like a "diamond problem" but I'm not sure if
it is):
---ASH <----------
/ \ ASH_OPTIMIZE_FOR_SIZE
!NOMMU <-*----SH_IS_ASH <----[OR] <--ASH_INTERNAL_GLOB
\ / ASH_RANDOM_SUPPORT
---BASH_IS_ASH <-- [...]
The kconfig-language document [1] states that:
> If a menu entry somehow depends on the previous entry, it can be
> made a submenu of it. First, the previous (parent) symbol must be
> part of the dependency list and then one of these two conditions
> must be true:
> - the child entry must become invisible, if the parent is set to 'n'
[BusyBox ash used to satisfy this, but no longer does]
> - the child entry must only be visible, if the parent is visible
[BusyBox ash configs actually satisfy this, but because of
"diamond" above this might not be easily detected]
So I found out a direct workaround: by making ash options explicitly
depend on !NOMMU, we can tell menuconfig that rule 2 above is satisfied
without any more tracking.
---------------------
/ \
!NOMMU <-*-----ASH <-------- \
\ \ \ ASH_OPTIMIZE_FOR_SIZE
*---SH_IS_ASH <---[OR]-[AND] <--ASH_INTERNAL_GLOB
\ / ASH_RANDOM_SUPPORT
--BASH_IS_ASH <- [...]
So all ash options would now be indented under "ash".
[1] "Documentation/kbuild/kconfig-language.txt" in Linux kernel source
Signed-off-by: Kang-Che Sung <explorer09@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Diffstat (limited to 'scripts')
0 files changed, 0 insertions, 0 deletions