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Add CONFIG_DEFAULT_SMALL that will select default values for configuration settings based upon either more features or smaller footprint. Turns out not be be useful for modifying existing defconfig files because the defaults do not apply in that case

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This commit is contained in:
Gregory Nutt 2014-02-20 18:49:45 -06:00
parent bebb5d8c4d
commit d092f888fb
4 changed files with 27 additions and 5 deletions
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6
ChangeLog
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@ -6635,4 +6635,10 @@
CONFIG_DISABLE_PSEUDOFS_OPERATIONS that effectively can be set
back out these recent changes in rmdir, mkdir, unlink, and rename
for operations on the pseudo-filesystem (2014-2-20).
* Kconfig: Add an option to select default values for configuration
variables based upon whether you want a smaller footprint or more
features. CONFIG_DEFAULT_SMALL is used in sched/Kconfig and
fs/Kconfig and in apps/. It turns out this this is not very useful
if you are modifying existing configurations because then the
defaults do not apply (2014-2-20).

13
Kconfig
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@ -21,6 +21,19 @@ menu "Build Setup"
config EXPERIMENTAL
bool "Prompt for development and/or incomplete code/drivers"
config DEFAULT_SMALL
bool "Default to smallest size"
default n
---help---
When options are present, the default value for certain options will
be the one the results in the smallest size (at a loss of featurs).
The default is a fuller feature set at a larger size.
NOTE: This option does not prevent you from overriding the default
to select another alternative. Nor does it affect the settings that
have already been selected in your configuration file. This applies
only to new settings that require a default value.
choice
prompt "Build Host Platform"
default HOST_LINUX

5
fs/Kconfig
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@ -10,8 +10,9 @@ config DISABLE_MOUNTPOINT
default n
config DISABLE_PSEUDOFS_OPERATIONS
bool "Disable pseudo-filesytem operations"
default n
bool "Disable pseudo-filesystem operations"
default y if DEFAULT_SMALL
default n if !DEFAULT_SMALL
---help---
Disable certain operations on pseudo-file systems include mkdir,
rmdir, unlink, and rename. These are necessary for the logical

8
sched/Kconfig
View File

@ -181,7 +181,7 @@ config JULIAN_TIME
config START_YEAR
int "Start year"
default 2013
default 2014
config START_MONTH
int "Start month"
@ -353,7 +353,8 @@ config DISABLE_CLOCK
config DISABLE_POSIX_TIMERS
bool "Disable POSIX timers"
depends on DISABLE_OS_API
default n
default y if DEFAULT_SMALL
default n if !DEFAULT_SMALL
config DISABLE_PTHREAD
bool "Disable pthread support"
@ -373,7 +374,8 @@ config DISABLE_MQUEUE
config DISABLE_ENVIRON
bool "Disable environment variable support"
depends on DISABLE_OS_API
default n
default y if DEFAULT_SMALL
default n if !DEFAULT_SMALL
if !DISABLE_SIGNALS
comment "Signal Numbers"