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| author | Kang-Che Sung <explorer09@gmail.com> | 2017-01-06 17:02:03 +0100 |
|---|---|---|
| committer | Denys Vlasenko <vda.linux@googlemail.com> | 2017-01-06 17:03:18 +0100 |
| commit | 6cd0294725cf40a3ef0bb0a1dcc7a7044a85cbf5 (patch) | |
| tree | edb6f1db0698b723ecef508c93e325ec62fd8639 | |
| parent | b62ea34afed7d3bf60a6c8ef5a030fea52f55b10 (diff) | |
| download | 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>
| -rw-r--r-- | shell/Config.src | 4 | ||||
| -rw-r--r-- | shell/ash.c | 7 |
2 files changed, 11 insertions, 0 deletions
diff --git a/shell/Config.src b/shell/Config.src index 9bd493fed..3545f05dd 100644 --- a/shell/Config.src +++ b/shell/Config.src @@ -80,6 +80,9 @@ endchoice INSERT +comment "Options common to all shells" +if ASH || HUSH || SH_IS_ASH || BASH_IS_ASH || SH_IS_HUSH || BASH_IS_HUSH + config FEATURE_SH_MATH bool "POSIX math support" default y @@ -163,5 +166,6 @@ config FEATURE_SH_HISTFILESIZE to set shell history size. Note that its max value is capped by "History size" setting in library tuning section. +endif # Options common to all shells endmenu diff --git a/shell/ash.c b/shell/ash.c index 7c53946ce..aee3d419c 100644 --- a/shell/ash.c +++ b/shell/ash.c @@ -26,6 +26,11 @@ //config: shell (by Herbert Xu), which was created by porting the 'ash' shell //config: (written by Kenneth Almquist) from NetBSD. //config: +//config:# ash options +//config:# note: Don't remove !NOMMU part in the next line; it would break +//config:# menuconfig's indenting. +//config:if !NOMMU && (ASH || SH_IS_ASH || BASH_IS_ASH) +//config: //config:config ASH_OPTIMIZE_FOR_SIZE //config: bool "Optimize for size instead of speed" //config: default y @@ -140,6 +145,8 @@ //config: depends on ASH || SH_IS_ASH || BASH_IS_ASH //config: help //config: Enable "check for new mail" function in the ash shell. +//config: +//config:endif # ash options //applet:IF_ASH(APPLET(ash, BB_DIR_BIN, BB_SUID_DROP)) //applet:IF_SH_IS_ASH(APPLET_ODDNAME(sh, ash, BB_DIR_BIN, BB_SUID_DROP, ash)) |