if BR2_TOOLCHAIN_EXTERNAL
  
  choice
  	prompt "Toolchain"
  
  comment "glibc toolchains only available with shared lib support"
  	depends on BR2_STATIC_LIBS
  
  comment "Linaro toolchains available for Cortex-A + EABIhf"
  	depends on BR2_arm || BR2_armeb
  	depends on !BR2_ARM_CPU_ARMV7A || !BR2_ARM_EABIHF
  	depends on !BR2_STATIC_LIBS
  
  # Note: we use the same symbol for both Linaro toolchains.
  # Since they have different dependencies (the host), we can
  # give them different prompts and different help texts.
  config BR2_TOOLCHAIN_EXTERNAL_LINARO_ARM
  	bool "Linaro ARM 2014.09"
  	depends on BR2_arm
  	depends on BR2_ARM_CPU_ARMV7A
  	depends on BR2_HOSTARCH = "x86"
  	depends on BR2_ARM_EABIHF
  	depends on !BR2_STATIC_LIBS
  	select BR2_TOOLCHAIN_EXTERNAL_GLIBC
  	select BR2_TOOLCHAIN_HAS_SSP
  	select BR2_TOOLCHAIN_HAS_NATIVE_RPC
  	select BR2_INSTALL_LIBSTDCPP
  	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_1
  	select BR2_TOOLCHAIN_GCC_AT_LEAST_4_9
  	select BR2_TOOLCHAIN_HAS_FORTRAN
  	help
  	  Linaro toolchain for the ARM architecture. It uses Linaro
  	  GCC 2014.09 (based on gcc 4.9), Linaro GDB 2013.10 (based on
  	  GDB 7.6), eglibc 2.19, Binutils 2014.09 (based on 2.24). It
  	  generates code that runs on all Cortex-A profile devices,
  	  but tuned for the Cortex-A9. The code generated is Thumb 2,
  	  with the hard floating point calling convention, and uses
  	  the VFPv3-D16 FPU instructions.
  
  # See the note above.
  config BR2_TOOLCHAIN_EXTERNAL_LINARO_ARM
  	bool "Linaro ARM 2016.02"
  	depends on BR2_arm
  	depends on BR2_ARM_CPU_ARMV7A
  	depends on BR2_HOSTARCH = "x86_64"
  	depends on BR2_ARM_EABIHF
  	depends on !BR2_STATIC_LIBS
  	select BR2_TOOLCHAIN_EXTERNAL_GLIBC
  	select BR2_TOOLCHAIN_HAS_SSP
  	select BR2_TOOLCHAIN_HAS_NATIVE_RPC
  	select BR2_INSTALL_LIBSTDCPP
  	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_0
  	select BR2_TOOLCHAIN_GCC_AT_LEAST_5
  	select BR2_TOOLCHAIN_HAS_FORTRAN
  	help
  	  Linaro toolchain for the ARM architecture. It uses Linaro
  	  GCC 2016.02 (based on gcc 5.3), Linaro GDB 2016.02 (based on
  	  GDB 7.10), glibc 2.21, Binutils 2015.10 (based on 2.25). It
  	  generates code that runs on all Cortex-A profile devices,
  	  but tuned for the Cortex-A9. The code generated is Thumb 2,
  	  with the hard floating point calling convention, and uses
  	  the VFPv3-D16 FPU instructions.
  
  # See the note above.
  config BR2_TOOLCHAIN_EXTERNAL_LINARO_ARMEB
  	bool "Linaro armeb 2014.09"
  	depends on BR2_armeb
  	depends on BR2_ARM_CPU_ARMV7A
  	depends on BR2_HOSTARCH = "x86"
  	depends on BR2_ARM_EABIHF
  	depends on !BR2_STATIC_LIBS
  	select BR2_TOOLCHAIN_EXTERNAL_GLIBC
  	select BR2_TOOLCHAIN_HAS_SSP
  	select BR2_TOOLCHAIN_HAS_NATIVE_RPC
  	select BR2_INSTALL_LIBSTDCPP
  	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_1
  	select BR2_TOOLCHAIN_GCC_AT_LEAST_4_9
  	select BR2_TOOLCHAIN_HAS_FORTRAN
  	help
  	  Linaro toolchain for the ARM big endian architecture. It
  	  uses Linaro GCC 2014.09 (based on gcc 4.9), Linaro GDB
  	  2013.10 (based on GDB 7.6), eglibc 2.19, Binutils 2014.09
  	  (based on 2.24). It generates code that runs on all Cortex-A
  	  profile devices, but tuned for the Cortex-A9. The code
  	  generated is Thumb 2, with the hard floating point calling
  	  convention, and uses the VFPv3-D16 FPU instructions.
  
  # See the note above.
  config BR2_TOOLCHAIN_EXTERNAL_LINARO_ARMEB
  	bool "Linaro armeb 2016.02"
  	depends on BR2_armeb
  	depends on BR2_ARM_CPU_ARMV7A
  	depends on BR2_HOSTARCH = "x86_64"
  	depends on BR2_ARM_EABIHF
  	depends on !BR2_STATIC_LIBS
  	select BR2_TOOLCHAIN_EXTERNAL_GLIBC
  	select BR2_TOOLCHAIN_HAS_SSP
  	select BR2_TOOLCHAIN_HAS_NATIVE_RPC
  	select BR2_INSTALL_LIBSTDCPP
  	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_0
  	select BR2_TOOLCHAIN_GCC_AT_LEAST_5
  	help
  	  Linaro toolchain for the ARM big endian architecture. It
  	  uses Linaro GCC 2016.02 (based on gcc 5.3), Linaro GDB
  	  2016.02 (based on GDB 7.10), glibc 2.21, Binutils 2015.10
  	  (based on 2.25). It generates code that runs on all Cortex-A
  	  profile devices, but tuned for the Cortex-A9. The code
  	  generated is Thumb 2, with the hard floating point calling
  	  convention, and uses the VFPv3-D16 FPU instructions.
  
  config BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_ARM
  	bool "Sourcery CodeBench ARM 2014.05"
  	depends on BR2_arm
  	depends on BR2_HOSTARCH = "x86_64" || BR2_HOSTARCH = "x86"
  	depends on BR2_ARM_EABI
  	depends on !BR2_STATIC_LIBS
  	select BR2_TOOLCHAIN_EXTERNAL_GLIBC
  	select BR2_TOOLCHAIN_HAS_SSP
  	select BR2_TOOLCHAIN_HAS_NATIVE_RPC
  	select BR2_INSTALL_LIBSTDCPP
  	select BR2_HOSTARCH_NEEDS_IA32_LIBS
  	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_13
  	select BR2_TOOLCHAIN_GCC_AT_LEAST_4_8
  	help
  	  Sourcery CodeBench toolchain for the ARM architecture, from
  	  Mentor Graphics. It uses gcc 4.8.3, binutils 2.24.51, glibc
  	  2.18 and gdb 7.7.50, kernel headers 3.13. It has support
  	  for the following variants:
  	    - ARMv5TE, little endian, soft-float, glibc
  	      Select ARM926T, ARM10T, XScale or another ARMv5 core
  	      Select BR2_SOFT_FLOAT
  	    - ARMv4T, little endian, soft-float, glibc
  	      Select ARM720T, ARM920T, ARM922T or another ARMv4 core
  	      Select BR2_SOFT_FLOAT
  	    - ARMv7-A, Thumb 2, little endian, soft-float, glibc
  	      Select Cortex-A8, Cortex-A9 or another ARMv7-A core
  	      Select BR2_SOFT_FLOAT
  	      Set BR2_TARGET_OPTIMIZATION to -mthumb
  
  comment "Sourcery CodeBench toolchains available for the EABI ABI"
  	depends on BR2_arm
  	depends on !BR2_ARM_EABI
  	depends on !BR2_STATIC_LIBS
  
  config BR2_TOOLCHAIN_EXTERNAL_ARAGO_ARMV7A
  	bool "Arago ARMv7 2011.09"
  	depends on BR2_arm
  	depends on BR2_HOSTARCH = "x86_64" || BR2_HOSTARCH = "x86"
  	depends on BR2_ARM_CPU_ARMV7A
  	depends on BR2_ARM_EABI
  	depends on BR2_ARM_CPU_HAS_VFPV3
  	depends on !BR2_STATIC_LIBS
  	select BR2_TOOLCHAIN_EXTERNAL_GLIBC
  	select BR2_TOOLCHAIN_HAS_SSP
  	select BR2_TOOLCHAIN_HAS_NATIVE_RPC
  	select BR2_INSTALL_LIBSTDCPP
  	select BR2_HOSTARCH_NEEDS_IA32_LIBS
  	select BR2_TOOLCHAIN_GCC_AT_LEAST_4_5
  	# kernel headers: 2.6.31
  	help
  	  Texas Instruments Arago 2011.09 toolchain, with gcc 4.5.3,
  	  binutils 2.20.1, glibc 2.12, gdb 7.2.
  
  	  This toolchain uses -mfloat-abi=softfp (i.e can use FPU
  	  instructions, but passes floating point function arguments
  	  in integer registers), and requires a VFPv3 floating point
  	  unit to work properly. This unit is available on most
  	  Cortex-A ARM processors, but not all.
  
  config BR2_TOOLCHAIN_EXTERNAL_ARAGO_ARMV5TE
  	bool "Arago ARMv5 2011.09"
  	depends on BR2_arm
  	depends on BR2_HOSTARCH = "x86_64" || BR2_HOSTARCH = "x86"
  	depends on !BR2_ARM_CPU_ARMV4
  	depends on BR2_ARM_EABI
  	depends on !BR2_STATIC_LIBS
  	select BR2_TOOLCHAIN_EXTERNAL_GLIBC
  	select BR2_TOOLCHAIN_HAS_SSP
  	select BR2_TOOLCHAIN_HAS_NATIVE_RPC
  	select BR2_INSTALL_LIBSTDCPP
  	select BR2_HOSTARCH_NEEDS_IA32_LIBS
  	select BR2_TOOLCHAIN_GCC_AT_LEAST_4_5
  	# kernel headers: 2.6.31
  	help
  	  Texas Instruments Arago ARMv5 2011.09 toolchain, with gcc
  	  4.5.3, binutils 2.20.1, glibc 2.12, gdb 7.2.
  
  	  This toolchain uses software-floating point.
  
  config BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_MIPS
  	bool "Sourcery CodeBench MIPS 2016.05"
  	depends on BR2_mips || BR2_mipsel || BR2_mips64 || BR2_mips64el
  	depends on BR2_mips_32r2 || BR2_mips_64r2
  	depends on BR2_HOSTARCH = "x86_64" || BR2_HOSTARCH = "x86"
  	depends on !BR2_MIPS_NABI32
  	depends on !BR2_STATIC_LIBS
  	select BR2_TOOLCHAIN_EXTERNAL_GLIBC
  	select BR2_TOOLCHAIN_HAS_SSP
  	select BR2_TOOLCHAIN_HAS_NATIVE_RPC
  	select BR2_INSTALL_LIBSTDCPP
  	select BR2_HOSTARCH_NEEDS_IA32_LIBS
  	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_4
  	select BR2_TOOLCHAIN_GCC_AT_LEAST_5
  	help
  	  Sourcery CodeBench toolchain for the MIPS architecture, from
  	  Mentor Graphics. It uses gcc 5.3, binutils 2.25.51, glibc
  	  2.23, uClibc 0.9.30 and gdb 7.10.50, kernel headers 4.4.1. It
  	  has support for the following variants:
  	    - MIPS32r2 - Big-Endian, 2008 NaN, O32
  	      Select MIPS (big endian) core
  	      Disable BR2_SOFT_FLOAT
  	      Set BR2_TARGET_OPTIMIZATION to -mnan=2008
  	    - MIPS32r2 - Big-Endian, O32
  	      Select MIPS (big endian) core
  	      Disable BR2_SOFT_FLOAT
  	    - MIPS32r2 - Big-Endian, O32, MIPS16
  	      Select MIPS (big endian) core
  	      Disable BR2_SOFT_FLOAT
  	      Set BR2_TARGET_OPTIMIZATION to -mips16
  	    - MIPS32r2 - Big-Endian, Soft-Float, O32
  	      Select MIPS (big endian) core
  	      Select BR2_SOFT_FLOAT
  	    - MIPS32r2 - Big-Endian, Soft-Float, O32, MIPS16
  	      Select MIPS (big endian) core
  	      Select BR2_SOFT_FLOAT
  	      Set BR2_TARGET_OPTIMIZATION to -mips16
  	    - MIPS32r2 - Little-Endian, 2008 NaN, O32
  	      Select MIPS (little endian) core
  	      Disable BR2_SOFT_FLOAT
  	      Set BR2_TARGET_OPTIMIZATION to -mnan=2008
  	    - MIPS32r2 - Little-Endian, O32
  	      Select MIPS (little endian) core
  	      Disable BR2_SOFT_FLOAT
  	    - MIPS32r2 - Little-Endian, O32, MIPS16
  	      Select MIPS (little endian) core
  	      Disable BR2_SOFT_FLOAT
  	      Set BR2_TARGET_OPTIMIZATION to -mips16
  	    - MIPS32r2 - Little-Endian, Soft-Float, O32
  	      Select MIPS (little endian) core
  	      Select BR2_SOFT_FLOAT
  	    - MIPS32r2 - Little-Endian, Soft-Float, O32, MIPS16
  	      Select MIPS (little endian) core
  	      Select BR2_SOFT_FLOAT
  	      Set BR2_TARGET_OPTIMIZATION to -mips16
  	    - MIPS32r2 - Little-Endian, Soft-Float, O32, microMIPS
  	      Select MIPS (little endian) core
  	      Select BR2_SOFT_FLOAT
  	      Set BR2_TARGET_OPTIMIZATION to -mmicromips
  	    - MIPS32r2 - uClibc, Big-Endian, 2008 NaN, O32
  	      Not usable in Buildroot yet.
  	    - MIPS32r2 - uClibc, Big-Endian, O32
  	      Not usable in Buildroot yet.
  	    - MIPS32r2 - uClibc, Big-Endian, Soft-Float, O32
  	      Not usable in Buildroot yet.
  	    - MIPS32r2 - uClibc, Little-Endian, 2008 NaN, O32
  	      Not usable in Buildroot yet.
  	    - MIPS32r2 - uClibc, Little-Endian, O32
  	      Not usable in Buildroot yet.
  	    - MIPS32r2 - uClibc, Little-Endian, Soft-Float, O32
  	      Not usable in Buildroot yet.
  	    - MIPS64r2 - Big-Endian, N64
  	      Select MIPS64 (big endian) core
  	      Select the n64 ABI
  	      Disable BR2_SOFT_FLOAT
  	    - MIPS64r2 - Big-Endian, Soft-Float, N64
  	      Select MIPS64 (big endian) core
  	      Select the n64 ABI
  	      Select BR2_SOFT_FLOAT
  	    - MIPS64r2 - Little-Endian, N64
  	      Select MIPS64 (little endian) core
  	      Select the n64 ABI
  	      Disable BR2_SOFT_FLOAT
  	    - MIPS64r2 - Little-Endian, Soft-Float, N64
  	      Select MIPS64 (little endian) core
  	      Select the n64 ABI
  	      Select BR2_SOFT_FLOAT
  
  comment "Sourcery CodeBench toolchains are only available for MIPS/MIPS64 o32 and n64"
  	depends on BR2_MIPS_NABI32
  	depends on !BR2_STATIC_LIBS
  
  config BR2_TOOLCHAIN_EXTERNAL_CODESCAPE_IMG_MIPS
  	bool "Codescape IMG GNU Linux Toolchain 2016.05"
  	depends on BR2_mips || BR2_mipsel || BR2_mips64 || BR2_mips64el
  	depends on BR2_HOSTARCH = "x86_64" || BR2_HOSTARCH = "x86"
  	depends on BR2_mips_32r6 || (BR2_mips_64r6 && !BR2_MIPS_SOFT_FLOAT)
  	select BR2_TOOLCHAIN_EXTERNAL_GLIBC
  	select BR2_INSTALL_LIBSTDCPP
  	select BR2_HOSTARCH_NEEDS_IA32_LIBS
  	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_0
  	select BR2_TOOLCHAIN_GCC_AT_LEAST_4_9
  	select BR2_TOOLCHAIN_HAS_FORTRAN
  	help
  	  Codescape IMG GNU Linux Toolchain 2015.10 for the MIPS
  	  architecture, from Imagination Technologies. It uses gcc
  	  4.9.2, binutils 2.24.90, glibc 2.20, gdb 7.9.1 and kernel
  	  headers 4.0. It has support for the following variants:
  	    - MIPS32r6 - Big-Endian, Hard-Float, 2008 NaN, o32 ABI
  	      Select 'MIPS (big endian)' Target Architecture
  	      Select 'mips 32r6' Target Architecture Variant
  	      Disable 'Use soft-float'
  	    - MIPS32r6 - Big-Endian, Soft-Float, 2008 NaN, o32 ABI
  	      Select 'MIPS (big endian)' Target Architecture
  	      Select 'mips 32r6' Target Architecture Variant
  	      Enable 'Use soft-float'
  	    - MIPS32r6 - Little-Endian, Hard-Float, 2008 NaN, o32 ABI
  	      Select 'MIPS (little endian)' Target Architecture
  	      Select 'mips 32r6' Target Architecture Variant
  	      Disable 'Use soft-float'
  	    - MIPS32r6 - Little-Endian, Soft-Float, 2008 NaN, o32 ABI
  	      Select 'MIPS (little endian)' Target Architecture
  	      Select 'mips 32r6' Target Architecture Variant
  	      Enable 'Use soft-float'
  	    - MIPS32r6 - Little-Endian, Hard-Float, 2008 NaN, o32 ABI, microMIPS
  	      Select 'MIPS (little endian)' Target Architecture
  	      Select 'mips 32r6' Target Architecture Variant
  	      Disable 'Use soft-float'
  	      Set BR2_TARGET_OPTIMIZATION to '-mmicromips'
  	    - MIPS32r6 - Little-Endian, Soft-Float, 2008 NaN, o32 ABI, microMIPS
  	      Select 'MIPS (little endian)' Target Architecture
  	      Select 'mips 32r6' Target Architecture Variant
  	      Enable 'Use soft-float'
  	      Set BR2_TARGET_OPTIMIZATION to '-mmicromips'
  	    - MIPS64r6 - Big-Endian, Hard-Float, 2008 NaN, n32 ABI
  	      Select 'MIPS64 (big endian)' Target Architecture
  	      Select 'mips 64r6' Target Architecture Variant
  	      Select 'n32' Target ABI
  	      Disable 'Use soft-float'
  	    - MIPS64r6 - Little-Endian, Hard-Float, 2008 NaN, n32 ABI
  	      Select 'MIPS64 (little endian)' Target Architecture
  	      Select 'mips 64r6' Target Architecture Variant
  	      Select 'n32' Target ABI
  	      Disable 'Use soft-float'
  	    - MIPS64r6 - Big-Endian, Hard-Float, 2008 NaN, n64 ABI
  	      Select 'MIPS64 (big endian)' Target Architecture
  	      Select 'mips 64r6' Target Architecture Variant
  	      Select 'n64' Target ABI
  	      Disable 'Use soft-float'
  	    - MIPS64r6 - Little-Endian, Hard-Float, 2008 NaN, n64 ABI
  	      Select 'MIPS64 (little endian)' Target Architecture
  	      Select 'mips 64r6' Target Architecture Variant
  	      Select 'n64' Target ABI
  	      Disable 'Use soft-float'
  
  config BR2_TOOLCHAIN_EXTERNAL_CODESCAPE_MTI_MIPS
  	bool "Codescape MTI GNU Linux Toolchain 2016.05"
  	depends on BR2_mips || BR2_mipsel || BR2_mips64 || BR2_mips64el
  	depends on BR2_HOSTARCH = "x86_64" || BR2_HOSTARCH = "x86"
  	depends on BR2_mips_32r2 || (BR2_mips_64r2 && !BR2_MIPS_SOFT_FLOAT)
  	select BR2_TOOLCHAIN_EXTERNAL_GLIBC
  	select BR2_INSTALL_LIBSTDCPP
  	select BR2_HOSTARCH_NEEDS_IA32_LIBS
  	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_0
  	select BR2_TOOLCHAIN_GCC_AT_LEAST_4_9
  	select BR2_TOOLCHAIN_HAS_FORTRAN
  	help
  	  Codescape MTI GNU Linux Toolchain 2015.10 for the MIPS
  	  architecture, from Imagination Technologies. It uses gcc
  	  4.9.2, binutils 2.24.90, glibc 2.20, gdb 7.9.1 and kernel
  	  headers 4.0. It has support for the following variants:
  	    - MIPS32r2 - Big-Endian, Hard-Float, Legacy NaN, o32 ABI
  	      Select 'MIPS (big endian)' Target Architecture
  	      Select 'mips 32r2' Target Architecture Variant
  	      Disable 'Use soft-float'
  	    - MIPS32r2 - Big-Endian, Hard-Float, 2008 NaN, o32 ABI
  	      Select 'MIPS (big endian)' Target Architecture
  	      Select 'mips 32r2' Target Architecture Variant
  	      Disable 'Use soft-float'
  	      Set BR2_TARGET_OPTIMIZATION to '-mnan=2008'
  	    - MIPS32r2 - Big-Endian, Soft-Float, Legacy NaN, o32 ABI
  	      Select 'MIPS (big endian)' Target Architecture
  	      Select 'mips 32r2' Target Architecture Variant
  	      Enable 'Use soft-float'
  	    - MIPS32r2 - Little-Endian, Hard-Float, Legacy NaN, o32 ABI
  	      Select 'MIPS (little endian)' Target Architecture
  	      Select 'mips 32r2' Target Architecture Variant
  	      Disable 'Use soft-float'
  	    - MIPS32r2 - Little-Endian, Hard-Float, 2008 NaN, o32 ABI
  	      Select 'MIPS (little endian)' Target Architecture
  	      Select 'mips 32r2' Target Architecture Variant
  	      Disable 'Use soft-float'
  	      Set BR2_TARGET_OPTIMIZATION to '-mnan=2008'
  	    - MIPS32r2 - Little-Endian, Soft-Float, Legacy NaN, o32 ABI
  	      Select 'MIPS (little endian)' Target Architecture
  	      Select 'mips 32r2' Target Architecture Variant
  	      Enable 'Use soft-float'
  	    - MIPS32r2 - Little-Endian, Hard-Float, 2008 NaN, o32 ABI, microMIPS
  	      Select 'MIPS (little endian)' Target Architecture
  	      Select 'mips 32r2' Target Architecture Variant
  	      Enable 'Use soft-float'
  	      Set BR2_TARGET_OPTIMIZATION to '-mmicromips'
  	    - MIPS32r2 - Little-Endian, Soft-Float, Legacy NaN, o32 ABI, microMIPS
  	      Select 'MIPS (little endian)' Target Architecture
  	      Select 'mips 32r2' Target Architecture Variant
  	      Disable 'Use soft-float'
  	      Set BR2_TARGET_OPTIMIZATION to '-mmicromips'
  	    - MIPS64r2 - Big-Endian, Hard-Float, Legacy NaN, n32 ABI
  	      Select 'MIPS64 (big endian)' Target Architecture
  	      Select 'mips 64r2' Target Architecture Variant
  	      Select 'n32' Target ABI
  	      Disable 'Use soft-float'
  	    - MIPS64r2 - Little-Endian, Hard-Float, Legacy NaN, n32 ABI
  	      Select 'MIPS64 (little endian)' Target Architecture
  	      Select 'mips 64r2' Target Architecture Variant
  	      Select 'n32' Target ABI
  	      Disable 'Use soft-float'
  	    - MIPS64r2 - Big-Endian, Hard-Float, Legacy NaN, n64 ABI
  	      Select 'MIPS64 (big endian)' Target Architecture
  	      Select 'mips 64r2' Target Architecture Variant
  	      Select 'n64' Target ABI
  	      Disable 'Use soft-float'
  	    - MIPS64r2 - Little-Endian, Hard-Float, Legacy NaN, n64 ABI
  	      Select 'MIPS64 (little endian)' Target Architecture
  	      Select 'mips 64r2' Target Architecture Variant
  	      Select 'n64' Target ABI
  	      Disable 'Use soft-float'
  
  config BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_NIOSII
  	bool "Sourcery CodeBench Nios-II 2016.05"
  	depends on BR2_nios2
  	depends on BR2_HOSTARCH = "x86_64" || BR2_HOSTARCH = "x86"
  	depends on !BR2_STATIC_LIBS
  	select BR2_TOOLCHAIN_EXTERNAL_GLIBC
  	select BR2_TOOLCHAIN_HAS_SSP
  	select BR2_TOOLCHAIN_HAS_NATIVE_RPC
  	select BR2_INSTALL_LIBSTDCPP
  	select BR2_HOSTARCH_NEEDS_IA32_LIBS
  	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_4
  	select BR2_TOOLCHAIN_GCC_AT_LEAST_5
  	select BR2_TOOLCHAIN_HAS_BINUTILS_BUG_19405 # based-on binutils-2.25.1
  	help
  	  Sourcery CodeBench toolchain for the Nios-II architecture,
  	  from Mentor Graphics. It uses gcc 5.3, binutils 2.25.51,
  	  glibc 2.23, gdb 7.10.50 and kernel headers 4.4.
  
  config BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_SH
  	bool "Sourcery CodeBench SH 2012.09"
  	depends on BR2_sh4a || BR2_sh4aeb
  	depends on BR2_HOSTARCH = "x86_64" || BR2_HOSTARCH = "x86"
  	depends on !BR2_STATIC_LIBS
  	select BR2_TOOLCHAIN_EXTERNAL_GLIBC
  	select BR2_TOOLCHAIN_HAS_SSP
  	select BR2_TOOLCHAIN_HAS_NATIVE_RPC
  	select BR2_INSTALL_LIBSTDCPP
  	select BR2_HOSTARCH_NEEDS_IA32_LIBS
  	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_5
  	select BR2_TOOLCHAIN_GCC_AT_LEAST_4_7
  	help
  	  Sourcery CodeBench toolchain for the SuperH architecture,
  	  from Mentor Graphics. It uses gcc 4.7.2, binutils 2.23.51,
  	  glibc 2.16, uClibc 0.9.30, gdb 7.4.50 and kernel headers
  	  3.5.4. It has support for the following variants:
  	    - SH4A, glibc, little endian
  	      Default.
  	    - SH4A, glibc, big endian
  	      Add -mb to BR2_TARGET_OPTIMIZATION
  	    - SH4A, uClibc, little endian
  	      Not usable in Buildroot yet.
  	    - SH4A, uClibc, big endian
  	      Not usable in Buildroot yet.
  
  config BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_AMD64
  	bool "Sourcery CodeBench AMD64 2015.11"
  	depends on BR2_x86_64
  	depends on BR2_HOSTARCH = "x86_64" || BR2_HOSTARCH = "x86"
  	depends on !BR2_STATIC_LIBS
  	depends on BR2_x86_jaguar || BR2_x86_steamroller
  	select BR2_TOOLCHAIN_EXTERNAL_GLIBC
  	select BR2_TOOLCHAIN_HAS_SSP
  	select BR2_TOOLCHAIN_HAS_NATIVE_RPC
  	select BR2_INSTALL_LIBSTDCPP
  	select BR2_HOSTARCH_NEEDS_IA32_LIBS
  	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_2
  	select BR2_TOOLCHAIN_GCC_AT_LEAST_5
  	help
  	  Sourcery CodeBench toolchain for the amd64 (x86_64)
  	  architectures, from Mentor Graphics. It uses gcc 5.2,
  	  binutils 2.25.51, glibc 2.22, gdb 7.10.50 and kernel headers
  	  4.2. It has support for the following variants:
  	    - AMD Puma/Jaguar (family 16h), glibc
  	    Default for x86_64, nothing special to do.
  	    - AMD Steamroller (family 15h), glibc
  	    Select a steamroller core.
  	  No other architecture variants are supported since glibc
  	  is optimized for one of these two baselines.
  
  config BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_X86
  	bool "Sourcery CodeBench x86/x86_64 2012.09"
  	depends on BR2_i386 || BR2_x86_64
  	depends on BR2_HOSTARCH = "x86_64" || BR2_HOSTARCH = "x86"
  	depends on !BR2_STATIC_LIBS
  	depends on !BR2_x86_jaguar
  	depends on !BR2_x86_steamroller
  	select BR2_TOOLCHAIN_EXTERNAL_GLIBC
  	select BR2_TOOLCHAIN_HAS_SSP
  	select BR2_TOOLCHAIN_HAS_NATIVE_RPC
  	select BR2_INSTALL_LIBSTDCPP
  	select BR2_HOSTARCH_NEEDS_IA32_LIBS
  	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_5
  	select BR2_TOOLCHAIN_GCC_AT_LEAST_4_7
  	help
  	  Sourcery CodeBench toolchain for the x86/x86_64
  	  architectures, from Mentor Graphics. It uses gcc 4.7.2,
  	  binutils 2.23.51, glibc 2.16, gdb 7.4.50 and kernel headers
  	  3.5.4. It has support for the following variants:
  	    - Intel Pentium 4, glibc, 32 bits
  	      Default for x86, nothing special to do.
  	    - Intel Atom, glibc, 32 bits
  	      Select an Atom core
  	    - Intel Xeon, glibc, 64 bits
  	      Default for x86_64, nothing special to do.
  	    - Intel Core 2, glibc, 64 bits
  	      Select a Core 2 core
  	  Other architecture variants (beyond Pentium-4/Xeon) are
  	  supported as well, but glibc is not optimised for it.
  
  config BR2_TOOLCHAIN_EXTERNAL_BLACKFIN_UCLINUX
  	bool "Blackfin.uclinux.org 2014R1"
  	depends on BR2_bfin
  	depends on BR2_HOSTARCH = "x86_64" || BR2_HOSTARCH = "x86"
  	select BR2_TOOLCHAIN_EXTERNAL_UCLIBC
  	select BR2_INSTALL_LIBSTDCPP
  	select BR2_TOOLCHAIN_HAS_NATIVE_RPC
  	select BR2_USE_WCHAR
  	select BR2_TOOLCHAIN_HAS_THREADS
  	select BR2_TOOLCHAIN_HAS_THREADS_DEBUG
  	select BR2_HOSTARCH_NEEDS_IA32_LIBS
  	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_10
  	select BR2_TOOLCHAIN_GCC_AT_LEAST_4_3
  	select BR2_TOOLCHAIN_HAS_FORTRAN
  	help
  	  Toolchain for the Blackfin architecture, from
  	  http://blackfin.uclinux.org.
  
  # See note about Linaro ARM/ARMEB toolchains, above.
  config BR2_TOOLCHAIN_EXTERNAL_LINARO_AARCH64
  	bool "Linaro AArch64 14.09"
  	depends on BR2_aarch64
  	depends on BR2_HOSTARCH = "x86"
  	depends on !BR2_STATIC_LIBS
  	select BR2_TOOLCHAIN_EXTERNAL_GLIBC
  	select BR2_TOOLCHAIN_HAS_SSP
  	select BR2_INSTALL_LIBSTDCPP
  	select BR2_TOOLCHAIN_HAS_NATIVE_RPC
  	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_7
  	select BR2_TOOLCHAIN_GCC_AT_LEAST_4_9
  	select BR2_TOOLCHAIN_HAS_FORTRAN
  	help
  	  Toolchain for the AArch64 architecture, from
  	  http://www.linaro.org/engineering/armv8/
  
  # See note about Linaro ARM/ARMEB toolchains, above.
  config BR2_TOOLCHAIN_EXTERNAL_LINARO_AARCH64
  	bool "Linaro AArch64 2016.02"
  	depends on BR2_aarch64
  	depends on BR2_HOSTARCH = "x86_64"
  	depends on !BR2_STATIC_LIBS
  	select BR2_TOOLCHAIN_EXTERNAL_GLIBC
  	select BR2_TOOLCHAIN_HAS_SSP
  	select BR2_INSTALL_LIBSTDCPP
  	select BR2_TOOLCHAIN_HAS_NATIVE_RPC
  	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_0
  	select BR2_TOOLCHAIN_GCC_AT_LEAST_5
  	select BR2_TOOLCHAIN_HAS_FORTRAN
  	help
  	  Toolchain for the AArch64 architecture, from
  	  http://www.linaro.org/engineering/armv8/
  
  config BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_AARCH64
  	bool "CodeSourcery AArch64 2014.11"
  	depends on BR2_aarch64
  	depends on BR2_HOSTARCH = "x86_64" || BR2_HOSTARCH = "x86"
  	depends on !BR2_STATIC_LIBS
  	select BR2_TOOLCHAIN_EXTERNAL_GLIBC
  	select BR2_TOOLCHAIN_HAS_SSP
  	select BR2_INSTALL_LIBSTDCPP
  	select BR2_HOSTARCH_NEEDS_IA32_LIBS
  	select BR2_TOOLCHAIN_HAS_NATIVE_RPC
  	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_16
  	select BR2_TOOLCHAIN_GCC_AT_LEAST_4_9
  	help
  	  Sourcery CodeBench toolchain for the AArch64 architecture,
  	  from Mentor Graphics. It uses gcc 4.9.1, binutils
  	  2.24.51.20140217, glibc 2.20, gdb 7.7.50 and kernel headers
  	  3.16.2.
  
  config BR2_TOOLCHAIN_EXTERNAL_MUSL_CROSS
  	bool "Musl 1.1.12 toolchain"
  	depends on (BR2_arm && BR2_ARM_EABI && BR2_USE_MMU) || \
  		(BR2_arm && BR2_ARM_EABIHF && !BR2_ARM_CPU_ARMV4 && BR2_USE_MMU) || \
  		(BR2_armeb && BR2_ARM_EABI && !BR2_ARM_CPU_ARMV7A && BR2_USE_MMU) || \
  		BR2_i386 || (BR2_mips && !BR2_SOFT_FLOAT) || \
  		BR2_mipsel || (BR2_powerpc && BR2_powerpc_CLASSIC) || \
  		BR2_sh4 || BR2_sh4eb || \
  		BR2_x86_64
  	depends on BR2_HOSTARCH = "x86_64" || BR2_HOSTARCH = "x86"
  	# Unsupported for MIPS R6
  	depends on !BR2_mips_32r6 && !BR2_mips_64r6
  	select BR2_TOOLCHAIN_EXTERNAL_MUSL
  	select BR2_TOOLCHAIN_HAS_SSP
  	select BR2_INSTALL_LIBSTDCPP
  	select BR2_HOSTARCH_NEEDS_IA32_LIBS
  	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_12
  	select BR2_TOOLCHAIN_GCC_AT_LEAST_5
  	help
  	  Toolchain based on the Musl C library, provided by the
  	  musl-cross project. It uses gcc 5.3, binutils 2.25.1 and
  	  musl 1.1.12. It does not have a cross debugger included.
  
  	  The ARM soft-float toolchain is built for ARMv4t, while the
  	  ARM hard-float toolchain is built for ARMv5t.
  	  The x86 toolchain is built for i486.
  
  	  http://musl.codu.org/
  
  config BR2_TOOLCHAIN_EXTERNAL_SYNOPSYS_ARC
  	bool "Synopsys ARC 2014.12 toolchain"
  	depends on BR2_arc
  	depends on BR2_HOSTARCH = "x86_64"
  	# does not provide IPv6, and lacks many uClibc features
  	# expected by Buildroot. The next Synopsys toolchain version
  	# should fix those problems.
  	depends on BROKEN
  	select BR2_TOOLCHAIN_EXTERNAL_UCLIBC
  	select BR2_INSTALL_LIBSTDCPP
  	select BR2_TOOLCHAIN_HAS_NATIVE_RPC
  	select BR2_ENABLE_LOCALE
  	select BR2_USE_WCHAR
  	select BR2_TOOLCHAIN_HAS_THREADS
  	select BR2_TOOLCHAIN_HAS_THREADS_DEBUG
  	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_13
  	select BR2_TOOLCHAIN_GCC_AT_LEAST_4_8
  	help
  	  Toolchain for the ARC cores, from
  	  https://github.com/foss-for-synopsys-dwc-arc-processors/toolchain/releases
  
  config BR2_TOOLCHAIN_EXTERNAL_CUSTOM
  	bool "Custom toolchain"
  	help
  	  Use this option to use a custom toolchain pre-installed on
  	  your system.
  
  endchoice
  
  choice
  	prompt "Toolchain origin"
  	# Keep compatibility with old defconfig files that are using
  	# custom toolchains, and which are therefore assuming that
  	# "preinstalled" in the default choice.
  	default BR2_TOOLCHAIN_EXTERNAL_PREINSTALLED if BR2_TOOLCHAIN_EXTERNAL_CUSTOM
  
  config BR2_TOOLCHAIN_EXTERNAL_DOWNLOAD
  	bool "Toolchain to be downloaded and installed"
  	help
  	  Select this option if you want Buildroot to download and install the
  	  toolchain. If you have selected a custom toolchain, specify the URL
  	  in BR2_TOOLCHAIN_EXTERNAL_URL.
  
  config BR2_TOOLCHAIN_EXTERNAL_PREINSTALLED
  	bool "Pre-installed toolchain"
  	help
  	  Select this option if you want to use a pre-installed toolchain.
  	  Specify the path to this toolchain in BR2_TOOLCHAIN_EXTERNAL_PATH.
  
  endchoice
  
  config BR2_TOOLCHAIN_EXTERNAL_PATH
  	string "Toolchain path"
  	default "/path/to/toolchain/usr"
  	depends on BR2_TOOLCHAIN_EXTERNAL_PREINSTALLED
  	help
  	  Path to where the external toolchain is installed.
  
  config BR2_TOOLCHAIN_EXTERNAL_URL
  	string "Toolchain URL"
  	depends on BR2_TOOLCHAIN_EXTERNAL_CUSTOM && BR2_TOOLCHAIN_EXTERNAL_DOWNLOAD
  	help
  	  URL of the custom toolchain tarball to download and install.
  
  config BR2_TOOLCHAIN_EXTERNAL_CUSTOM_PREFIX
  	string "Toolchain prefix"
  	depends on BR2_TOOLCHAIN_EXTERNAL_CUSTOM
  	default "$(ARCH)-linux"
  
  config BR2_TOOLCHAIN_EXTERNAL_PREFIX
  	string
  	default "arc-linux"		 if BR2_TOOLCHAIN_EXTERNAL_SYNOPSYS_ARC && BR2_arcle
  	default "arceb-linux"		 if BR2_TOOLCHAIN_EXTERNAL_SYNOPSYS_ARC && BR2_arceb
  	default "arm-linux-gnueabihf"	 if BR2_TOOLCHAIN_EXTERNAL_LINARO_ARM
  	default "armeb-linux-gnueabihf"	 if BR2_TOOLCHAIN_EXTERNAL_LINARO_ARMEB
  	default "arm-none-linux-gnueabi" if BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_ARM
  	default "arm-arago-linux-gnueabi" if BR2_TOOLCHAIN_EXTERNAL_ARAGO_ARMV7A
  	default "arm-arago-linux-gnueabi" if BR2_TOOLCHAIN_EXTERNAL_ARAGO_ARMV5TE
  	default "aarch64-linux-gnu"      if BR2_TOOLCHAIN_EXTERNAL_LINARO_AARCH64
  	default "aarch64-amd-linux-gnu"  if BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_AARCH64
  	default "mips-linux-gnu"         if BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_MIPS
  	default "nios2-linux-gnu"        if BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_NIOSII
  	default "sh-linux-gnu"           if BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_SH
  	default "i686-pc-linux-gnu"	 if BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_X86
  	default "x86_64-amd-linux-gnu"   if BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_AMD64
  	default "bfin-uclinux"		 if BR2_TOOLCHAIN_EXTERNAL_BLACKFIN_UCLINUX && BR2_BINFMT_FLAT
  	default "bfin-linux-uclibc"	 if BR2_TOOLCHAIN_EXTERNAL_BLACKFIN_UCLINUX && BR2_BINFMT_FDPIC
  	default "arm-linux-musleabi"	 if BR2_TOOLCHAIN_EXTERNAL_MUSL_CROSS && BR2_arm && BR2_ARM_EABI
  	default "arm-linux-musleabihf"	 if BR2_TOOLCHAIN_EXTERNAL_MUSL_CROSS && BR2_arm && BR2_ARM_EABIHF
  	default "mips-img-linux-gnu"     if BR2_TOOLCHAIN_EXTERNAL_CODESCAPE_IMG_MIPS
  	default "mips-mti-linux-gnu"     if BR2_TOOLCHAIN_EXTERNAL_CODESCAPE_MTI_MIPS
  	default "armeb-linux-musleabi"	 if BR2_TOOLCHAIN_EXTERNAL_MUSL_CROSS && BR2_armeb
  	default "i486-linux-musl"	 if BR2_TOOLCHAIN_EXTERNAL_MUSL_CROSS && BR2_i386
  	default "mips-linux-musl"	 if BR2_TOOLCHAIN_EXTERNAL_MUSL_CROSS && (BR2_mips && !BR2_SOFT_FLOAT)
  	default "mipsel-linux-musl"	 if BR2_TOOLCHAIN_EXTERNAL_MUSL_CROSS && (BR2_mipsel && !BR2_SOFT_FLOAT)
  	default "mipsel-sf-linux-musl"	 if BR2_TOOLCHAIN_EXTERNAL_MUSL_CROSS && (BR2_mipsel && BR2_SOFT_FLOAT)
  	default "powerpc-linux-musl"     if BR2_TOOLCHAIN_EXTERNAL_MUSL_CROSS && BR2_powerpc
  	default "sh4-linux-musl"         if BR2_TOOLCHAIN_EXTERNAL_MUSL_CROSS && BR2_sh4
  	default "sh4eb-linux-musl"       if BR2_TOOLCHAIN_EXTERNAL_MUSL_CROSS && BR2_sh4eb
  	default "x86_64-linux-musl"	 if BR2_TOOLCHAIN_EXTERNAL_MUSL_CROSS && BR2_x86_64
  	default BR2_TOOLCHAIN_EXTERNAL_CUSTOM_PREFIX \
  					 if BR2_TOOLCHAIN_EXTERNAL_CUSTOM
  
  config BR2_TOOLCHAIN_EXTERNAL_GLIBC
  	bool
  	select BR2_TOOLCHAIN_USES_GLIBC
  
  config BR2_TOOLCHAIN_EXTERNAL_UCLIBC
  	bool
  	select BR2_TOOLCHAIN_USES_UCLIBC
  
  config BR2_TOOLCHAIN_EXTERNAL_MUSL
  	bool
  	select BR2_TOOLCHAIN_USES_MUSL
  	# Compatibility headers: cdefs.h, queue.h
  	select BR2_PACKAGE_MUSL_COMPAT_HEADERS
  
  if BR2_TOOLCHAIN_EXTERNAL_CUSTOM
  
  choice
  	bool "External toolchain gcc version"
  	default BR2_TOOLCHAIN_EXTERNAL_GCC_4_3
  	help
  	  Set to the gcc version that is used by your external
  	  toolchain.
  
  config BR2_TOOLCHAIN_EXTERNAL_GCC_6
  	bool "6.x"
  	select BR2_TOOLCHAIN_GCC_AT_LEAST_6
  
  config BR2_TOOLCHAIN_EXTERNAL_GCC_5
  	bool "5.x"
  	select BR2_TOOLCHAIN_GCC_AT_LEAST_5
  
  config BR2_TOOLCHAIN_EXTERNAL_GCC_4_9
  	bool "4.9.x"
  	select BR2_TOOLCHAIN_GCC_AT_LEAST_4_9
  
  config BR2_TOOLCHAIN_EXTERNAL_GCC_4_8
  	bool "4.8.x"
  	select BR2_TOOLCHAIN_GCC_AT_LEAST_4_8
  
  config BR2_TOOLCHAIN_EXTERNAL_GCC_4_7
  	bool "4.7.x"
  	select BR2_TOOLCHAIN_GCC_AT_LEAST_4_7
  
  config BR2_TOOLCHAIN_EXTERNAL_GCC_4_6
  	bool "4.6.x"
  	select BR2_TOOLCHAIN_GCC_AT_LEAST_4_6
  
  config BR2_TOOLCHAIN_EXTERNAL_GCC_4_5
  	bool "4.5.x"
  	select BR2_TOOLCHAIN_GCC_AT_LEAST_4_5
  
  config BR2_TOOLCHAIN_EXTERNAL_GCC_4_4
  	bool "4.4.x"
  	select BR2_TOOLCHAIN_GCC_AT_LEAST_4_4
  
  config BR2_TOOLCHAIN_EXTERNAL_GCC_4_3
  	bool "4.3.x"
  	select BR2_TOOLCHAIN_GCC_AT_LEAST_4_3
  
  endchoice
  
  choice
  	bool "External toolchain kernel headers series"
  	default BR2_TOOLCHAIN_EXTERNAL_HEADERS_REALLY_OLD
  	help
  	  Set to the kernel headers version that were used to build
  	  this external toolchain.
  
  	  This is used to hide/show some packages that have strict
  	  requirements on the version of kernel headers.
  
  	  If unsure what version your toolchain is using, you can look
  	  at the value of LINUX_VERSION_CODE in linux/version.h in your
  	  toolchain. The Linux version is M.m.p, with:
  	    M = ( LINUX_VERSION_CODE >> 16 ) & 0xFF
  	    m = ( LINUX_VERSION_CODE >> 8  ) & 0xFF
  	    p = ( LINUX_VERSION_CODE >> 0  ) & 0xFF
  
  config BR2_TOOLCHAIN_EXTERNAL_HEADERS_4_7
  	bool "4.7.x"
  	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_7
  
  config BR2_TOOLCHAIN_EXTERNAL_HEADERS_4_6
  	bool "4.6.x"
  	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_6
  
  config BR2_TOOLCHAIN_EXTERNAL_HEADERS_4_5
  	bool "4.5.x"
  	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_5
  
  config BR2_TOOLCHAIN_EXTERNAL_HEADERS_4_4
  	bool "4.4.x"
  	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_4
  
  config BR2_TOOLCHAIN_EXTERNAL_HEADERS_4_3
  	bool "4.3.x"
  	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_3
  
  config BR2_TOOLCHAIN_EXTERNAL_HEADERS_4_2
  	bool "4.2.x"
  	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_2
  
  config BR2_TOOLCHAIN_EXTERNAL_HEADERS_4_1
  	bool "4.1.x"
  	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_1
  
  config BR2_TOOLCHAIN_EXTERNAL_HEADERS_4_0
  	bool "4.0.x"
  	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_0
  
  config BR2_TOOLCHAIN_EXTERNAL_HEADERS_3_19
  	bool "3.19.x"
  	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_19
  
  config BR2_TOOLCHAIN_EXTERNAL_HEADERS_3_18
  	bool "3.18.x"
  	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_18
  
  config BR2_TOOLCHAIN_EXTERNAL_HEADERS_3_17
  	bool "3.17.x"
  	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_17
  
  config BR2_TOOLCHAIN_EXTERNAL_HEADERS_3_16
  	bool "3.16.x"
  	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_16
  
  config BR2_TOOLCHAIN_EXTERNAL_HEADERS_3_15
  	bool "3.15.x"
  	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_15
  
  config BR2_TOOLCHAIN_EXTERNAL_HEADERS_3_14
  	bool "3.14.x"
  	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_14
  
  config BR2_TOOLCHAIN_EXTERNAL_HEADERS_3_13
  	bool "3.13.x"
  	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_13
  
  config BR2_TOOLCHAIN_EXTERNAL_HEADERS_3_12
  	bool "3.12.x"
  	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_12
  
  config BR2_TOOLCHAIN_EXTERNAL_HEADERS_3_11
  	bool "3.11.x"
  	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_11
  
  config BR2_TOOLCHAIN_EXTERNAL_HEADERS_3_10
  	bool "3.10.x"
  	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_10
  
  config BR2_TOOLCHAIN_EXTERNAL_HEADERS_3_9
  	bool "3.9.x"
  	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_9
  
  config BR2_TOOLCHAIN_EXTERNAL_HEADERS_3_8
  	bool "3.8.x"
  	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_8
  
  config BR2_TOOLCHAIN_EXTERNAL_HEADERS_3_7
  	bool "3.7.x"
  	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_7
  
  config BR2_TOOLCHAIN_EXTERNAL_HEADERS_3_6
  	bool "3.6.x"
  	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_6
  
  config BR2_TOOLCHAIN_EXTERNAL_HEADERS_3_5
  	bool "3.5.x"
  	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_5
  
  config BR2_TOOLCHAIN_EXTERNAL_HEADERS_3_4
  	bool "3.4.x"
  	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_4
  
  config BR2_TOOLCHAIN_EXTERNAL_HEADERS_3_3
  	bool "3.3.x"
  	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_3
  
  config BR2_TOOLCHAIN_EXTERNAL_HEADERS_3_2
  	bool "3.2.x"
  	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_2
  
  config BR2_TOOLCHAIN_EXTERNAL_HEADERS_3_1
  	bool "3.1.x"
  	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_1
  
  config BR2_TOOLCHAIN_EXTERNAL_HEADERS_3_0
  	bool "3.0.x"
  	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_0
  
  config BR2_TOOLCHAIN_EXTERNAL_HEADERS_REALLY_OLD
  	bool "2.6.x"
  
  endchoice
  
  choice
  	prompt "External toolchain C library"
  	default BR2_TOOLCHAIN_EXTERNAL_CUSTOM_UCLIBC
  
  config BR2_TOOLCHAIN_EXTERNAL_CUSTOM_UCLIBC
  	bool "uClibc"
  	select BR2_TOOLCHAIN_EXTERNAL_UCLIBC
  	# For the time being, we assume that all custom external
  	# toolchains have shadow password support.
  	select BR2_TOOLCHAIN_HAS_SHADOW_PASSWORDS
  	help
  	  Select this option if your external toolchain uses the
  	  uClibc C library (available from http://www.uclibc.org/).
  
  config BR2_TOOLCHAIN_EXTERNAL_CUSTOM_GLIBC
  	bool "glibc/eglibc"
  	depends on !BR2_STATIC_LIBS
  	select BR2_TOOLCHAIN_EXTERNAL_GLIBC
  	help
  	  Select this option if your external toolchain uses the GNU C
  	  library (available from https://www.gnu.org/software/libc/)
  	  or its variant the eglibc library (http://www.eglibc.org/).
  
  	  Note: eglibc is a variant of glibc that (among other things)
  	  can be configured to exclude some of its features. Using a
  	  toolchain with eglibc configured to exclude key features may
  	  cause build failures to some packages.
  
  comment "glibc only available with shared lib support"
  	depends on BR2_STATIC_LIBS
  
  config BR2_TOOLCHAIN_EXTERNAL_CUSTOM_MUSL
  	bool "musl"
  	select BR2_TOOLCHAIN_EXTERNAL_MUSL
  	help
  	  Select this option if your external toolchain uses the
  	  'musl' C library, available from http://www.musl-libc.org/.
  
  endchoice
  
  if BR2_TOOLCHAIN_EXTERNAL_CUSTOM_UCLIBC
  
  config BR2_TOOLCHAIN_EXTERNAL_WCHAR
  	bool "Toolchain has WCHAR support?"
  	select BR2_USE_WCHAR
  	help
  	  Select this option if your external toolchain supports
  	  WCHAR. If you don't know, leave the default value, Buildroot
  	  will tell you if it's correct or not.
  
  config BR2_TOOLCHAIN_EXTERNAL_LOCALE
  	bool "Toolchain has locale support?"
  	select BR2_TOOLCHAIN_EXTERNAL_WCHAR
  	select BR2_ENABLE_LOCALE
  	help
  	  Select this option if your external toolchain has locale
  	  support. If you don't know, leave the default value,
  	  Buildroot will tell you if it's correct or not.
  
  config BR2_TOOLCHAIN_EXTERNAL_HAS_THREADS
  	bool "Toolchain has threads support?"
  	select BR2_TOOLCHAIN_HAS_THREADS
  	default y
  	help
  	  Select this option if your external toolchain has thread
  	  support. If you don't know, leave the default value,
  	  Buildroot will tell you if it's correct or not.
  
  if BR2_TOOLCHAIN_EXTERNAL_HAS_THREADS
  
  config BR2_TOOLCHAIN_EXTERNAL_HAS_THREADS_DEBUG
  	bool "Toolchain has threads debugging support?"
  	select BR2_TOOLCHAIN_HAS_THREADS_DEBUG
  	default y
  	help
  	  Select this option if your external toolchain has thread
  	  debugging support. If you don't know, leave the default
  	  value, Buildroot will tell you if it's correct or not.
  
  config BR2_TOOLCHAIN_EXTERNAL_HAS_THREADS_NPTL
  	bool "Toolchain has NPTL threads support?"
  	select BR2_TOOLCHAIN_HAS_THREADS_NPTL
  	default y
  	help
  	  Select this option if your external toolchain uses the NPTL
  	  (Native Posix Thread Library) implementation of Posix
  	  threads. If you don't know, leave the default value,
  	  Buildroot will tell you if it's correct or not.
  
  endif # BR2_TOOLCHAIN_EXTERNAL_HAS_THREADS
  
  endif # BR2_TOOLCHAIN_EXTERNAL_CUSTOM_UCLIBC
  
  config BR2_TOOLCHAIN_EXTERNAL_HAS_SSP
  	bool "Toolchain has SSP support?"
  	select BR2_TOOLCHAIN_HAS_SSP
  	default y if BR2_TOOLCHAIN_EXTERNAL_GLIBC
  	default y if BR2_TOOLCHAIN_EXTERNAL_MUSL
  	help
  	  Selection this option if your external toolchain has Stack
  	  Smashing Protection support enabled. If you don't know,
  	  leave the default value, Buildroot will tell you if it's
  	  correct or not.
  
  config BR2_TOOLCHAIN_EXTERNAL_INET_RPC
  	bool "Toolchain has RPC support?"
  	select BR2_TOOLCHAIN_HAS_NATIVE_RPC
  	depends on !BR2_TOOLCHAIN_EXTERNAL_MUSL
  	default y if BR2_TOOLCHAIN_EXTERNAL_GLIBC
  	help
  	  Select this option if your external toolchain supports
  	  RPC. If you don't know, leave the default value, Buildroot
  	  will tell you if it's correct or not.
  
  config BR2_TOOLCHAIN_EXTERNAL_CXX
  	bool "Toolchain has C++ support?"
  	select BR2_INSTALL_LIBSTDCPP
  	help
  	  Select this option if your external toolchain has C++
  	  support. If you don't know, leave the default value,
  	  Buildroot will tell you if it's correct or not.
  
  config BR2_TOOLCHAIN_EXTERNAL_FORTRAN
  	bool "Toolchain has Fortran support?"
  	select BR2_TOOLCHAIN_HAS_FORTRAN
  	help
  	  Select this option if your external toolchain has Fortran
  	  support. If you don't know, leave the default value,
  	  Buildroot will tell you if it's correct or not.
  
  config BR2_TOOLCHAIN_EXTRA_EXTERNAL_LIBS
  	string "Extra toolchain libraries to be copied to target"
  	help
  	  If your external toolchain provides extra libraries that
  	  need to be copied to the target filesystem, enter them
  	  here, separated by spaces.
  
  endif # BR2_TOOLCHAIN_EXTERNAL_CUSTOM
  
  config BR2_TOOLCHAIN_EXTERNAL_GDB_SERVER_COPY
  	bool "Copy gdb server to the Target"
  	depends on BR2_TOOLCHAIN_EXTERNAL
  	help
  	  Copy the gdbserver provided by the external toolchain to the
  	  target.
  
  # When the FDPIC shared binary format is used, the corresponding libraries are
  # always installed. When a different binary format is used, we offer the option
  # of installing the FDPIC shared libraries.
  config BR2_BFIN_INSTALL_FDPIC_SHARED
  	bool "Install FDPIC shared libraries"
  	depends on BR2_bfin && !BR2_BINFMT_FDPIC
  	help
  	  The Linux kernel supports running both FDPIC and FLAT applications
  	  concurrently if the binary format specific libraries are installed
  	  properly. This option allows developer to install FDPIC libraries
  	  into a buildroot rootfs image built with binary format that is not
  	  FDPIC.
  
  # When the FLAT shared binary format is used, we force the installation
  # of the corresponding libraries. When a different binary format is
  # used, we offer the option of installing the FLAT shared libraries.
  config BR2_BFIN_INSTALL_FLAT_SHARED
  	bool "Install FLAT shared libraries" if !BR2_BINFMT_FLAT_SHARED
  	depends on BR2_bfin
  	default y if BR2_BINFMT_FLAT_SHARED
  	help
  	  The Linux kernel supports running both FDPIC and FLAT applications
  	  concurrently if the binary format specific libraries are installed
  	  properly. This option allows developer to install FLAT libraries
  	  into a buildroot rootfs image built with binary format that is not
  	  shared FLAT.
  
  endif # BR2_TOOLCHAIN_EXTERNAL