82 lines
2.3 KiB
Plaintext
82 lines
2.3 KiB
Plaintext
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#
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# For a description of the syntax of this configuration file,
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# see the file kconfig-language.txt in the NuttX tools repository.
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#
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comment "Time/Time Zone Support"
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config LIBC_LOCALTIME
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bool "localtime API call support"
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default "n"
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depends on !DISABLE_ENVIRON
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---help---
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localtime API call support
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Logic currently depends on file system support with, at a minimum, these
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files in the zoneinfo directory: GMT and posixrules. An additional
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timezone file is required for any additional, local time zone(s) and the
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environment variable TZ must be set to the name of that timezone file
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when tzset() is called.
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See https://www.iana.org/time-zones . See also nuttx/zoneinfo
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which provides a framework for incorporating the TZ database into a
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NuttX build.
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if LIBC_LOCALTIME
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config LIBC_TZ_MAX_TIMES
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int "Maximum number of times in timezone"
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default 370
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---help---
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Timezone files with more than this number of times will not be usedi
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(tmecnt).
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Warning: Some files in IANA TZ database include many times. The current
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posixrules file, for example, has timecnt = 236. The value of
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TX_MAX_ITMES in the tzfile.h header file on my Linux system is 370, the
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default used here. You may want to reduce this value for a smaller
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footprint.
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config LIBC_TZ_MAX_TYPES
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int "Maximum number of TZ types"
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default 20
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---help---
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Maximum number of local time types. You may want to reduce this value
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for a smaller footprint.
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config LIBC_TZDIR
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string "zoneinfo directory path"
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default "/etc/zoneinfo"
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---help---
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This is the full path to the location where the TZ database is expected
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to be found.
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config LIB_ZONEINFO
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bool "TZ database"
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default n
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---help---
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Download and build the TZ/Olson database.
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if LIB_ZONEINFO
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config LIB_ZONEINFO_ROMFS
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bool "Build ROMFS filesystem"
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default n
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depends on FS_ROMFS
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---help---
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Build a mountable ROMFS filesystem containing the TZ/Olson database
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endif # LIB_ZONEINFO
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endif # LIBC_LOCALTIME
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config TIME_EXTENDED
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bool "Add day of week, year support"
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default "n"
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depends on !LIBC_LOCALTIME
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---help---
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Selecting TIME_EXTENDED adds tm_wday, tm_yday and tm_isdst
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to the tm struct. This allows integration with 3rd party libraries
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that expect the tm struct to contain these members.
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Note: tm_isdst is always 0
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