94a048002b
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@5061 42af7a65-404d-4744-a932-0658087f49c3
154 lines
3.9 KiB
Plaintext
154 lines
3.9 KiB
Plaintext
#
|
|
# For a description of the syntax of this configuration file,
|
|
# see misc/tools/kconfig-language.txt.
|
|
#
|
|
|
|
config STDIO_BUFFER_SIZE
|
|
int "C STDIO buffer size"
|
|
default 64
|
|
---help---
|
|
Size of buffers using within the C buffered I/O interfaces.
|
|
(printf, putchar, fwrite, etc.).
|
|
|
|
config STDIO_LINEBUFFER
|
|
bool "STDIO line buffering"
|
|
default y
|
|
---help---
|
|
Flush buffer I/O whenever a newline character is found in
|
|
the output data stream.
|
|
|
|
config NUNGET_CHARS
|
|
int "Number unget() characters"
|
|
default 2
|
|
---help---
|
|
Number of characters that can be buffered by ungetc() (Only if NFILE_STREAMS > 0)
|
|
|
|
config LIB_HOMEDIR
|
|
string "Home directory"
|
|
default "/"
|
|
depends on !DISABLE_ENVIRON
|
|
---help---
|
|
The home directory to use with operations like such as 'cd ~'
|
|
|
|
config HAVE_LIBM
|
|
bool "Architecture-specific libm.a"
|
|
default n
|
|
---help---
|
|
Architecture specific logic provides an implementation of libm.a
|
|
and a math.h header file that can be found at include/arch/math.h.
|
|
|
|
config NOPRINTF_FIELDWIDTH
|
|
bool "Disable sprintf support fieldwidth"
|
|
default n
|
|
---help---
|
|
sprintf-related logic is a
|
|
little smaller if we do not support fieldwidthes
|
|
|
|
config LIBC_FLOATINGPOINT
|
|
bool "Enable floating point in printf"
|
|
default n
|
|
---help---
|
|
By default, floating point
|
|
support in printf, sscanf, etc. is disabled.
|
|
|
|
config LIBC_STRERROR
|
|
bool "Enable strerror"
|
|
default n
|
|
---help---
|
|
strerror() is useful because it decodes 'errno' values into a human readable
|
|
strings. But it can also require a lot of memory. If this option is selected,
|
|
strerror() will still exist in the build but it will not decode error values.
|
|
This option should be used by other logic to decide if it should use strerror()
|
|
or not. For example, the NSH application will not use strerror() if this
|
|
option is not selected; perror() will not use strerror() is this option is not
|
|
selected (see also NSH_STRERROR).
|
|
|
|
config LIBC_STRERROR_SHORT
|
|
bool "Use short error descriptions in strerror()"
|
|
default n
|
|
depends on LIBC_STRERROR
|
|
---help---
|
|
If this option is selected, then strerror() will use a shortened string when
|
|
it decodes the error. Specifically, strerror() is simply use the string that
|
|
is the common name for the error. For example, the 'errno' value of 2 will
|
|
produce the string "No such file or directory" is LIBC_STRERROR_SHORT
|
|
is not defined but the string "ENOENT" is LIBC_STRERROR_SHORT is defined.
|
|
|
|
config LIBC_PERROR_STDOUT
|
|
bool "perror() to stdout"
|
|
default n
|
|
---help---
|
|
POSIX requires that perror() provide its output on stderr. This option may
|
|
be defined, however, to provide perror() output that is serialized with
|
|
other stdout messages.
|
|
|
|
config LIBC_PERROR_DEVNAME
|
|
string "perror() to device"
|
|
default "/dev/console"
|
|
depends on !LIBC_PERROR_STDOUT
|
|
---help---
|
|
Another non-standard option is to provide perror() output to a logging device
|
|
or file. LIBC_PERROR_DEVNAME may be defined to be any write-able,
|
|
character device (or file).
|
|
|
|
config ARCH_LOWPUTC
|
|
bool "Low-level console output"
|
|
default "y"
|
|
---help---
|
|
architecture supports low-level, boot time console output
|
|
|
|
config ENABLE_ARCH_OPTIMIZED_FUN
|
|
bool "Enable arch optimized functions"
|
|
default n
|
|
---help---
|
|
Allow for architecture optimized implementations
|
|
|
|
The architecture can provide optimized versions of the
|
|
following to improve system performance
|
|
|
|
The architecture may provide custom versions of certain
|
|
standard header files:
|
|
config ARCH_MATH_H, ARCH_STDBOOL_H, ARCH_STDINT_H
|
|
|
|
if ENABLE_ARCH_OPTIMIZED_FUN
|
|
config ARCH_MEMCPY
|
|
bool "memcpy"
|
|
default n
|
|
|
|
config ARCH_MEMCMP
|
|
bool "memcmp"
|
|
default n
|
|
|
|
config ARCH_MEMMOVE
|
|
bool "memmove"
|
|
default n
|
|
|
|
config ARCH_MEMSET
|
|
bool "memset"
|
|
default n
|
|
|
|
config ARCH_STRCMP
|
|
bool "strcmp"
|
|
default n
|
|
|
|
config ARCH_STRCPY
|
|
bool "strcpy"
|
|
default n
|
|
|
|
config ARCH_STRNCPY
|
|
bool "strncpy"
|
|
default n
|
|
|
|
config ARCH_STRLEN
|
|
bool "strlen"
|
|
default n
|
|
|
|
config ARCH_STRNLEN
|
|
bool "strlen"
|
|
default n
|
|
|
|
config ARCH_BZERO
|
|
bool "bzero"
|
|
default n
|
|
endif
|