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#
# For a description of the syntax of this configuration file,
# see Documentation/kbuild/config-language.txt.
#
config UCLIBC_HAS_MMU
bool "Target CPU has a memory management unit (MMU)"
default y
depends !ARCH_HAS_NO_MMU
help
If your target CPU does not have a memory management unit (MMU),
then answer N here. Normally, Linux runs on systems with an MMU.
If you are building a uClinux system, answer N.
Most people will answer Y.
config UCLIBC_HAS_FLOATS
bool "Enable floating point number support"
default y
help
This option allows you to entirely omit all floating point number
support from uClibc. This will cause floating point functions like
strtod() to be omitted from uClibc. Other floating point functions,
such as printf() and scanf() will still be included in the library,
but will not contain support for floating point numbers.
Answering N to this option can reduce the size of uClibc. Most people
will answer Y.
config HAS_FPU
bool "Target CPU has a floating point unit (FPU)"
depends on UCLIBC_HAS_FLOATS && !ARCH_HAS_NO_FPU
default y
help
If your target CPU does not have a Floating Point Unit (FPU) or a
kernel FPU emulator, but you still wish to support floating point
functions, then uClibc will need to be compiled with soft floating
point support (-msoft-float). If your target CPU does not have an
FPU or an FPU emulator within the Linux kernel, then you should
answer N.
Most people will answer Y.
config UCLIBC_HAS_SOFT_FLOAT
bool
depends on UCLIBC_HAS_FLOATS && !HAS_FPU
default y
config USE_GCC_SOFT_FLOAT_OPTION
bool
depends UCLIBC_HAS_SOFT_FLOAT
default y if !ARCH_HAS_NO_FPU
help
True if we should use the gcc `-msoft-float' option when
compiling in soft-float support (not all platforms use that
option, even if they use soft-floats).
config DO_C99_MATH
bool "Enable full C99 math library support"
depends on UCLIBC_HAS_FLOATS
default n
help
If you want the uClibc math library to contain the full set C99
math library features, then answer Y. If you leave this set to
N the math library will contain only the math functions that were
listed as part of the traditionla POSIX/IEEE 1003.1b-1993 standard.
Leaving this option set to N will save around 35k on an x86 system.
If your applications require the newer C99 math library functions,
then answer Y.
config WARNINGS
string "Compiler Warnings"
default "-Wall"
help
Set this to the set of gcc warnings you wish to see while compiling.
config KERNEL_SOURCE
string "Linux kernel header location"
default "/usr/src/linux"
help
The kernel source you use to compile with should be the same as the
Linux kernel you run your apps on. uClibc doesn't even try to achieve binary
compatibility across kernel versions. So don't expect, for example, uClibc
compiled with Linux kernel 2.0.x to implement lchown properly, since 2.0.x
can't do that. Similarly, if you compile uClibc vs Linux 2.4.x kernel headers,
but then run on Linux 2.0.x, lchown will be compiled into uClibc, but won't
work at all. You have been warned.
config UCLIBC_UCLINUX_BROKEN_MUNMAP
bool
depends on !UCLIBC_HAS_MMU
default y
config EXCLUDE_BRK
bool
depends on !UCLIBC_HAS_MMU
default y
config C_SYMBOL_PREFIX
string
default "_" if ARCH_HAS_C_SYMBOL_PREFIX
default "" if !ARCH_HAS_C_SYMBOL_PREFIX
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