# Copyright (c) 2024 BayLibre SAS
#
# SPDX-License-Identifier: Apache-2.0

menu "Sysconf support"

config POSIX_SYSCONF
	bool "Support for sysconf"
	default y if POSIX_API
	help
	  The sysconf() function provides a method for the application to determine
	  the current value of a configurable system limit or option (variable).

config POSIX_PAGE_SIZE_BITS
	int "Number of bits to use for PAGE_SIZE"
	range 6 16
	default 12 if POSIX_API
	default 6
	help
	  Define PAGE_SIZE as BIT(n), where n is the value configured here.
	  PAGE_SIZE is supported in the range [64, 65536]
	  If CONFIG_POSIX_API=y, PAGE_SIZE defaults to 4096, otherwise, it is 64 bytes.

if POSIX_SYSCONF

choice POSIX_SYSCONF_IMPL_CHOICE
	default POSIX_SYSCONF_IMPL_FULL if CPP
	default POSIX_SYSCONF_IMPL_MACRO
	prompt "Sysconf implementation method"

config POSIX_SYSCONF_IMPL_MACRO
	bool "Macro"
	help
	  The sysconf() function is implemented compile-time constant via macros. This is the option
	  with the least overhead. The downside is that sysconf() is not an addressable function.

config POSIX_SYSCONF_IMPL_FULL
	bool "Full"
	help
	  The sysconf() function is implemented as a large integer-integer array. The advantage if this
	  option is that all sysconf() options can be queried and that the sysconf() symbol is
	  addressable.

endchoice

endif # POSIX_SYSCONF

endmenu # "Sysconf support"