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8b5d644bb3
openwrt/toolchain/Config.in
Felix Fietkau 8b5d644bb3 toolchain: add support of ARC architecture 
This includes binutils, gcc, gdb and uClibc-ng.

Latest release of ARC gcc (as of today it is "arc-2015.06")
is based on upstream gcc 4.8.4.

Sources are available on GitHub, see:
https://github.com/foss-for-synopsys-dwc-arc-processors/gcc

Latest release of ARC binutils (as of today it is "arc-2015.06")
is based on upstream binutils 2.23.

Sources are available on GitHub, see:
https://github.com/foss-for-synopsys-dwc-arc-processors/binutils-gdb/releases/tag/arc-2015.06

Latest release of ARC GDB (as of today this is "arc-2015.06-gdb")
is based on upstream gdb 7.9.1.

Sources are available on GitHub, see:
https://github.com/foss-for-synopsys-dwc-arc-processors/binutils-gdb/releases/tag/arc-2015.06-gdb

Note that for binutils and gdb that come from unified git repository
(which is the case for upstream binutils/gdb today) we need to disable
building of gdb in binutils and binutils in gdb hence in binutils:
------>8------
--disable-sim
--disable-gdb
------>8------

and in gdb:
------>8------
--disable-binutils
--disable-ld
--disable-gas
------>8------

Also in gdb we disable sim because if the following breakage while
building with it:
------------>8------------
/usr/bin/env bash ./../common/genmloop.sh -shell /usr/bin/env bash \
        -mono -fast -pbb -switch sem5-switch.c \
        -cpu a5f -infile ./mloop5.in \
        -outfile-suffix 5
unknown option: bash
Makefile:699: recipe for target 'stamp-5mloop' failed
make[7]: *** [stamp-5mloop] Error 1
------------>8------------

Cc: Felix Fietkau <nbd@openwrt.org>
Cc: John Crispin <blogic@openwrt.org>
Cc: Jonas Gorski <jogo@openwrt.org>
Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>

SVN-Revision: 47438
2015-11-10 12:03:59 +00:00

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# Copyright (C) 2006-2013 OpenWrt.org
#
# This is free software, licensed under the GNU General Public License v2.
# See /LICENSE for more information.
#
menuconfig TARGET_OPTIONS
bool "Target Options" if DEVEL
config TARGET_OPTIMIZATION
string "Target Optimizations" if TARGET_OPTIONS
default DEFAULT_TARGET_OPTIMIZATION
help
Optimizations to use when building for the target host.
config SOFT_FLOAT
bool "Use software floating point by default" if TARGET_OPTIONS
default y if !HAS_FPU
depends on arm || armeb || powerpc || mipsel || mips || mips64el || mips64
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 everything will need to be compiled with soft floating
point support (-msoft-float).
Most people will answer N.
config USE_MIPS16
bool "Build packages with MIPS16 instructions" if TARGET_OPTIONS
depends on HAS_MIPS16
depends on !GCC_VERSION_4_6
default y
help
If your target CPU does support the MIPS16 instruction set
and you want to use it for packages, enable this option.
MIPS16 produces smaller binaries thus reducing pressure on
caches and TLB.
Most people will answer N.
menuconfig EXTERNAL_TOOLCHAIN
bool
prompt "Use external toolchain" if DEVEL
help
If enabled, OpenWrt will compile using an existing toolchain instead of
compiling one.
config NATIVE_TOOLCHAIN
bool
prompt "Use host's toolchain" if DEVEL
depends on EXTERNAL_TOOLCHAIN
select NO_STRIP
help
If enabled, OpenWrt will compile using the native toolchain for your
host instead of compiling one.
config TARGET_NAME
string
prompt "Target name" if DEVEL
depends on EXTERNAL_TOOLCHAIN && !NATIVE_TOOLCHAIN
default "aarch64-unknown-linux-gnu" if aarch64
default "aarch64_be-unknown-linux-gnu" if aarch64_be
default "arm-unknown-linux-gnu" if arm
default "armeb-unknown-linux-gnu" if armeb
default "i486-unknown-linux-gnu" if i386
default "mips-unknown-linux-gnu" if mips
default "mipsel-unknown-linux-gnu" if mipsel
default "powerpc-unknown-linux-gnu" if powerpc
default "x86_64-unknown-linux-gnu" if x86_64
config TOOLCHAIN_PREFIX
string
prompt "Toolchain prefix" if DEVEL
depends on EXTERNAL_TOOLCHAIN && !NATIVE_TOOLCHAIN
default "aarch64-unknown-linux-gnu" if aarch64
default "aarch64_be-unknown-linux-gnu" if aarch64_be
default "arm-unknown-linux-gnu-" if arm
default "armeb-unknown-linux-gnu-" if armeb
default "i486-unknown-linux-gnu-" if i386
default "mips-unknown-linux-gnu-" if mips
default "mipsel-unknown-linux-gnu-" if mipsel
default "powerpc-unknown-linux-gnu-" if powerpc
default "x86_64-unknown-linux-gnu-" if x86_64
config TOOLCHAIN_ROOT
string
prompt "Toolchain root" if DEVEL
depends on EXTERNAL_TOOLCHAIN && !NATIVE_TOOLCHAIN
default "/opt/cross/aarch64-unknown-linux-gnu" if aarch64
default "/opt/cross/aarch64_be-unknown-linux-gnu" if aarch64_be
default "/opt/cross/arm-unknown-linux-gnu" if arm
default "/opt/cross/armeb-unknown-linux-gnu" if armeb
default "/opt/cross/i486-unknown-linux-gnu" if i386
default "/opt/cross/mips-unknown-linux-gnu" if mips
default "/opt/cross/mipsel-unknown-linux-gnu" if mipsel
default "/opt/cross/powerpc-unknown-linux-gnu" if powerpc
default "/opt/cross/x86_64-unknown-linux-gnu" if x86_64
config TOOLCHAIN_LIBC
string
prompt "Toolchain libc" if DEVEL
depends on EXTERNAL_TOOLCHAIN && !NATIVE_TOOLCHAIN
default "uclibc"
help
Specify the libc type used by the external toolchain. The given value
is passed as -m flag to all gcc and g++ invocations. This is mainly
intended for multilib toolchains which support glibc and uclibc at
the same time. If no value is specified, no -m flag is passed.
config TOOLCHAIN_BIN_PATH
string
prompt "Toolchain program path" if DEVEL
depends on EXTERNAL_TOOLCHAIN && !NATIVE_TOOLCHAIN
default "./usr/bin ./bin"
help
Specify additional directories searched for toolchain binaries
(override PATH). Use ./DIR for directories relative to the root above.
config TOOLCHAIN_INC_PATH
string
prompt "Toolchain include path" if DEVEL
depends on EXTERNAL_TOOLCHAIN && !NATIVE_TOOLCHAIN
default "./usr/include ./include"
help
Specify additional directories searched for header files (override
CPPFLAGS). Use ./DIR for directories relative to the root above.
config TOOLCHAIN_LIB_PATH
string
prompt "Toolchain library path" if DEVEL
depends on EXTERNAL_TOOLCHAIN && !NATIVE_TOOLCHAIN
default "./usr/lib ./lib"
help
Specify additional directories searched for libraries (override LDFLAGS).
Use ./DIR for directories relative to the root above.
config NEED_TOOLCHAIN
bool
depends on DEVEL
default y if !EXTERNAL_TOOLCHAIN
menuconfig TOOLCHAINOPTS
bool "Toolchain Options" if DEVEL
depends on NEED_TOOLCHAIN
menuconfig EXTRA_TARGET_ARCH
bool
prompt "Enable an extra toolchain target architecture" if TOOLCHAINOPTS
depends on !sparc
default y if powerpc64
default n
help
Some builds may require a 'biarch' toolchain. This option
allows you to specify an additional target arch.
Most people will answer N here.
config EXTRA_TARGET_ARCH_NAME
string
default "powerpc64" if powerpc64
prompt "Extra architecture name" if EXTRA_TARGET_ARCH
help
Specify the cpu name (eg powerpc64 or x86_64) of the
additional target architecture.
config EXTRA_TARGET_ARCH_OPTS
string
default "-m64" if powerpc64
prompt "Extra architecture compiler options" if EXTRA_TARGET_ARCH
help
If you're specifying an addition target architecture,
you'll probably need to also provide options to make
the compiler use this alternate arch.
For example, if you're building a compiler that can build
both powerpc and powerpc64 binaries, you'll need to
specify -m64 here.
choice
prompt "MIPS64 user-land ABI" if TOOLCHAINOPTS && (mips64 || mips64el)
default MIPS64_ABI_N64
help
MIPS64 supports 3 different user-land ABIs: o32 (legacy),
n32 and n64.
config MIPS64_ABI_N64
bool "n64"
config MIPS64_ABI_N32
bool "n32"
config MIPS64_ABI_O32
bool "o32"
endchoice
comment "Binary tools"
depends on TOOLCHAINOPTS
source "toolchain/binutils/Config.in"
comment "Compiler"
depends on TOOLCHAINOPTS
source "toolchain/gcc/Config.in"
comment "C Library"
depends on TOOLCHAINOPTS
choice
prompt "C Library implementation" if TOOLCHAINOPTS
default LIBC_USE_GLIBC if mips64 || mips64el
default LIBC_USE_UCLIBC if arc
default LIBC_USE_MUSL
help
Select the C library implementation.
config LIBC_USE_GLIBC
bool "Use (e)glibc"
select USE_GLIBC
depends on !arc
config LIBC_USE_UCLIBC
select USE_UCLIBC
bool "Use uClibc"
depends on !(aarch64 || aarch64_be)
depends on BROKEN || !(arm || armeb || i386 || x86_64 || mips || mipsel || mips64 || mips64el || powerpc)
config LIBC_USE_MUSL
select USE_MUSL
bool "Use musl"
depends on !(arc || mips64 || mips64el)
endchoice
source "toolchain/glibc/Config.in"
source "toolchain/uClibc/Config.in"
source "toolchain/musl/Config.in"
comment "Debuggers"
depends on TOOLCHAINOPTS
config GDB
bool
depends on !(aarch64 || aarch64_be)
prompt "Build gdb" if TOOLCHAINOPTS
default y if !EXTERNAL_TOOLCHAIN
help
Enable if you want to build the gdb.
config INSIGHT
bool
prompt "Build insight-gdb" if TOOLCHAINOPTS
select GDB
default n
help
Enable if you want to build insight-gdb.
config USE_GLIBC
bool
config USE_UCLIBC
default y if !TOOLCHAINOPTS && !EXTERNAL_TOOLCHAIN && !NATIVE_TOOLCHAIN && (arc || mips64 || mips64el)
bool
config USE_MUSL
default y if !TOOLCHAINOPTS && !EXTERNAL_TOOLCHAIN && !NATIVE_TOOLCHAIN && !(arc || mips64 || mips64el)
bool
config USE_EXTERNAL_LIBC
bool
default y if EXTERNAL_TOOLCHAIN || NATIVE_TOOLCHAIN
source "toolchain/binutils/Config.version"
source "toolchain/gcc/Config.version"
source "toolchain/glibc/Config.version"
source "toolchain/uClibc/Config.version"
source "toolchain/musl/Config.version"
config LIBC
string
default "glibc" if USE_GLIBC
default "uClibc" if USE_UCLIBC
default "musl" if USE_MUSL
config LIBC_VERSION
string
default GLIBC_VERSION if USE_GLIBC
default UCLIBC_VERSION if USE_UCLIBC
default MUSL_VERSION if USE_MUSL
config TARGET_SUFFIX
string
default "gnueabi" if USE_GLIBC && (arm || armeb)
default "gnu" if USE_GLIBC && !(arm || armeb)
default "uclibcgnueabi" if USE_UCLIBC && (arm || armeb)
default "uclibc" if USE_UCLIBC && !(arm || armeb)
default "muslgnueabi" if USE_MUSL && (arm || armeb)
default "musl" if USE_MUSL && !(arm || armeb)
config MIPS64_ABI
depends on mips64 || mips64el
string
default "64" if MIPS64_ABI_N64
default "n32" if MIPS64_ABI_N32
default "32" if MIPS64_ABI_O32
default "64"
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