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Config.in
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Config.in
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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
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.
choice BPF_TOOLCHAIN
prompt "BPF toolchain" if DEVEL
default BPF_TOOLCHAIN_BUILD_LLVM if BUILDBOT
default BPF_TOOLCHAIN_PREBUILT if HAS_PREBUILT_LLVM_TOOLCHAIN
default BPF_TOOLCHAIN_NONE
config BPF_TOOLCHAIN_NONE
bool "None"
config BPF_TOOLCHAIN_PREBUILT
bool "Use prebuilt LLVM toolchain"
depends on HAS_PREBUILT_LLVM_TOOLCHAIN
select USE_LLVM_PREBUILT
config BPF_TOOLCHAIN_HOST
select USE_LLVM_HOST
bool "Use host LLVM toolchain"
config BPF_TOOLCHAIN_BUILD_LLVM
select USE_LLVM_BUILD
bool "Build LLVM toolchain for eBPF"
help
If enabled, a LLVM toolchain for building eBPF binaries will be built.
If this is not enabled, eBPF packages can only be built if the host
has a suitable toolchain
endchoice
config BPF_TOOLCHAIN_HOST_PATH
string
depends on BPF_TOOLCHAIN_HOST
prompt "Host LLVM toolchain path (prefix)" if DEVEL
default "/usr/local/opt/llvm" if HOST_OS_MACOS
default ""
menuconfig EXTERNAL_TOOLCHAIN
bool
prompt "Use external toolchain" if DEVEL
help
If enabled, the buildroot 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, the buildroot 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
choice TOOLCHAIN_LIBC_TYPE
prompt "Toolchain libc" if DEVEL
depends on EXTERNAL_TOOLCHAIN && !NATIVE_TOOLCHAIN
default EXTERNAL_TOOLCHAIN_LIBC_USE_MUSL
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 EXTERNAL_TOOLCHAIN_LIBC_USE_GLIBC
bool "glibc"
select USE_GLIBC
config EXTERNAL_TOOLCHAIN_LIBC_USE_MUSL
bool "musl"
select USE_MUSL
endchoice
config TOOLCHAIN_LIBC
string
depends on EXTERNAL_TOOLCHAIN && !NATIVE_TOOLCHAIN
default "glibc" if EXTERNAL_TOOLCHAIN_LIBC_USE_GLIBC
default "musl" if EXTERNAL_TOOLCHAIN_LIBC_USE_MUSL
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/fortify ./include" if EXTERNAL_TOOLCHAIN_LIBC_USE_MUSL
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 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
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
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
depends on !LIBC_USE_MUSL
bool "n32"
config MIPS64_ABI_O32
bool "o32"
endchoice
comment "Binary tools"
depends on TOOLCHAINOPTS
source "toolchain/binutils/Config.in"
config DWARVES
bool
prompt "Build pahole" if TOOLCHAINOPTS
depends on !HOST_OS_MACOS
default n
help
Enable if you want to build pahole and the dwarves tools.
comment "Compiler"
depends on TOOLCHAINOPTS
source "toolchain/gcc/Config.in"
config NASM
bool
depends on ( i386 || x86_64 )
prompt "Build nasm" if TOOLCHAINOPTS
default y
help
Enable if you want to build nasm
comment "C Library"
depends on TOOLCHAINOPTS
choice
prompt "C Library implementation" if TOOLCHAINOPTS
default LIBC_USE_GLIBC if arc
default LIBC_USE_MUSL
help
Select the C library implementation.
config LIBC_USE_GLIBC
bool "Use glibc"
select USE_GLIBC
config LIBC_USE_MUSL
select USE_MUSL
bool "Use musl"
depends on !arc
endchoice
source "toolchain/musl/Config.in"
comment "Debuggers"
depends on TOOLCHAINOPTS
config GDB
bool
prompt "Build gdb" if TOOLCHAINOPTS
default y if !EXTERNAL_TOOLCHAIN
help
Enable if you want to build the gdb.
config GDB_PYTHON
bool
depends on GDB
prompt "Build gdb with python binding"
help
Enable the python bindings for GDB to allow using python in the gdb shell.
config HAS_BPF_TOOLCHAIN
bool
config HAS_PREBUILT_LLVM_TOOLCHAIN
def_bool $(shell, [ -f llvm-bpf/.llvm-version ] && echo y || echo n)
config USE_LLVM_HOST
select HAS_BPF_TOOLCHAIN
bool
config USE_LLVM_PREBUILT
select HAS_BPF_TOOLCHAIN
default y if !DEVEL && !BUILDBOT && HAS_PREBUILT_LLVM_TOOLCHAIN
bool
config USE_LLVM_BUILD
default y if !DEVEL && BUILDBOT
select HAS_BPF_TOOLCHAIN
bool
config USE_GLIBC
default y if !TOOLCHAINOPTS && !EXTERNAL_TOOLCHAIN && !NATIVE_TOOLCHAIN && (arc)
bool
config USE_MUSL
default y if !TOOLCHAINOPTS && !EXTERNAL_TOOLCHAIN && !NATIVE_TOOLCHAIN && !(arc)
bool
config SSP_SUPPORT
default y if !PKG_CC_STACKPROTECTOR_NONE
bool
config USE_EXTERNAL_LIBC
bool
default y if EXTERNAL_TOOLCHAIN || NATIVE_TOOLCHAIN
source "toolchain/binutils/Config.version"
source "toolchain/gcc/Config.version"
config LIBC
string
default "glibc" if USE_GLIBC
default "musl" if USE_MUSL
config TARGET_SUFFIX
string
default "gnueabi" if USE_GLIBC && (arm || armeb)
default "gnu" if USE_GLIBC && !(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"