nuttx/libs/libc/misc/Kconfig
Xiang Xiao 6604cdb3f2 fs: Remove all LIBC_IOCTL_VARIADIC related stuff
Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
2020-05-05 08:27:58 -06:00

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#
# For a description of the syntax of this configuration file,
# see the file kconfig-language.txt in the NuttX tools repository.
#
config LIB_SENDFILE_BUFSIZE
int "sendfile() buffer size"
default 512
---help---
Size of the I/O buffer to allocate in sendfile(). Default: 512b
comment "Non-standard Library Support"
config LIB_CRC64_FAST
bool "Fast CRC64"
default n
---help---
Enable the CRC64 lookup table to compute the CRC64 faster.
config LIB_KBDCODEC
bool "Keyboard CODEC"
default n
---help---
In NuttX, a keyboard/keypad driver is simply a character driver that
may have an (optional) encoding/decoding layer on the data returned
by the character driver. A keyboard may return simple text data
(alphabetic, numeric, and punctuation) or control characters
(enter, control-C, etc.). However, in addition, most keyboards
support actions that cannot be represented as text data. Such
actions include things like cursor controls (home, up arrow,
page down, etc.), editing functions (insert, delete, etc.), volume
controls, (mute, volume up, etc.) and other special functions.
Some special encoding may be required to multiplex these two classes
of data.
This option enables the functions that implement the encoding and
decoding of keyboard data. These are the interfaces prototyped in
include/nuttx/input/kbd_codec.h. While not correctly a part of
the C library, it is included here because the decoding side of this
interface must be accessible by end user programs.
config LIB_SLCDCODEC
bool "Segment LCD CODEC"
default n
---help---
In NuttX, a character-oriented, segment LCD (SLCD) driver is simply
a character device that may have an (optional) encoding/decoding
layer on the data provided to the SLCD driver. The application may
provide simple text data (alphabetic, numeric, and punctuation) or
control characters (enter, control-C, etc.). However, in addition,
most SLCDs support actions that cannot be represented as text data.
Such actions include things like cursor controls (home, up arrow,
page down, etc.) and other special functions (e.g., blinking). Some
special encoding may be required to multiplex these two classes of
data.
This option enables the functions that implement the encoding and
decoding of SLCD data. These are the interfaces prototyped in
include/nuttx/lcd/slcd_codec.h. While not correctly a part of the C
library, it is included here because the encoding side of this
interface must be accessible by end user programs.
config LIB_ENVPATH
bool "Support PATH Environment Variable"
default n
depends on !DISABLE_ENVIRON
---help---
Use the contents of the common environment variable to locate executable
or library files. Default: n