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libc/newlib: allow using newlib with archs other than avr32

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This commit is contained in:
Yann E. MORIN" 2009-10-21 22:51:39 +02:00
parent f5cfdc1369
commit 68b9b30f6b
5 changed files with 32 additions and 15 deletions
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13
config/libc.in
View File

@ -4,8 +4,6 @@ menu "C-library"
config LIBC
string
default "newlib" if BARE_METAL && ARCH_avr32 && EXPERIMENTAL
default "none" if BARE_METAL
config LIBC_VERSION
string
@ -23,8 +21,6 @@ config LIBC_VERSION
source config.gen/libc.in
comment "Common C library options"
config LIBC_SUPPORT_NPTL
bool
default n
@ -37,7 +33,12 @@ config THREADS
string
default "nptl" if THREADS_NPTL
default "linuxthreads" if THREADS_LINUXTHREADS
default "none" if THREADS_NONE
default "none" if THREADS_NONE || LIBC_none
# No C library, no threads!
if ! LIBC_none
comment "Common C library options"
choice
bool
@ -62,4 +63,6 @@ config THREADS_NONE
endchoice
endif # ! LIBC_none
endmenu

16
config/libc/newlib.in
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@ -1,14 +1,14 @@
# newlib options
# depends on EXPERIMENTAL
# depends on EXPERIMENTAL && BARE_METAL
config LIBC_newlib
help
Newlib is a C library intended for use on embedded systems. It is a
conglomeration of several library parts, all under free software
licenses that make them easily usable on embedded products. Newlib
is only available in source form. It can be compiled for a wide
array of processors, and will usually work on any architecture with
the addition of a few low-level routines.
Newlib is a C library intended for use on embedded systems. It is a
conglomeration of several library parts, all under free software
licenses that make them easily usable on embedded products. Newlib
is only available in source form. It can be compiled for a wide
array of processors, and will usually work on any architecture with
the addition of a few low-level routines.
choice
bool
@ -31,10 +31,10 @@ config LIBC_VERSION
config ATMEL_AVR32_HEADERS
bool
prompt "Install Atmel AVR32 headers"
depends on ARCH_avr32
default y
help
Install Atmel AVR32 headers for native AVR32 development. Most
AVR32 MCU devices are supported.
If you do native AVR32 development you want to say 'Y' here.

14
config/libc/none.in Normal file
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@ -0,0 +1,14 @@
# Dummy config file to not use a C library *at all*
# depends on BARE_METAL
config LIBC_none
help
Do not use a C library.
This is usefull if your project is self-contained, does not rely on
an external C library, and provides all the necessary bits.
Most probably usefull to bootloaders, as they generally don't depend
on the C library.
If unsure: do *not* choose that, and use another option in the choice.

2
scripts/build/arch/arm.sh
View File

@ -8,7 +8,7 @@ CT_DoArchTupleValues() {
case "${CT_LIBC},${CT_ARCH_ARM_EABI}" in
*glibc,y) CT_TARGET_SYS=gnueabi;;
uClibc,y) CT_TARGET_SYS=uclibcgnueabi;;
none,y) CT_TARGET_SYS=eabi;;
*,y) CT_TARGET_SYS=eabi;;
esac
# In case we're EABI, do *not* specify any ABI!

2
scripts/functions
View File

@ -696,9 +696,9 @@ CT_DoBuildTargetTuple() {
# Set defaults for the system part of the tuple. Can be overriden
# by architecture-specific values.
case "${CT_LIBC}" in
none) CT_TARGET_SYS=elf;;
*glibc) CT_TARGET_SYS=gnu;;
uClibc) CT_TARGET_SYS=uclibc;;
*) CT_TARGET_SYS=elf;;
esac
# Transform the ARCH into a kernel-understandable ARCH