+ 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_UCLIBC
+ bool "uClibc"
+ select USE_UCLIBC
+ depends on !(aarch64 || aarch64_be)
+
+ 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 "uclibc" if EXTERNAL_TOOLCHAIN_LIBC_USE_UCLIBC
+ 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"
+ 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