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authorKang-Che Sung <explorer09@gmail.com>2017-01-06 17:02:03 +0100
committerDenys Vlasenko <vda.linux@googlemail.com>2017-01-06 17:03:18 +0100
commit6cd0294725cf40a3ef0bb0a1dcc7a7044a85cbf5 (patch)
treeedb6f1db0698b723ecef508c93e325ec62fd8639 /shell
parentb62ea34afed7d3bf60a6c8ef5a030fea52f55b10 (diff)
downloadbusybox-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 'shell')
-rw-r--r--shell/Config.src4
-rw-r--r--shell/ash.c7
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))