toolchain/toolchain-buildroot/Config.in

# Config entries for internal toolchain backend

if BR2_TOOLCHAIN_BUILDROOT

comment "Toolchain Buildroot Options"

config BR2_TOOLCHAIN_BUILDROOT_VENDOR
	string "custom toolchain vendor name"
	default "buildroot"
	help
	  This option allows to customize the "vendor" part of the
	  toolchain tuple, where the toolchain tuple has the form
	  <arch>-<vendor>-<os>-<libc>. The default value, "buildroot",
	  is fine for most cases, except in very specific situations
	  where gcc might make different decisions based on the vendor
	  part of the tuple. The value "unknown" is not allowed, as the
	  cross-compiling toolchain might then be confused with the
	  native toolchain when the target and host architecture are
	  identical. The value can not be empty either.

	  If you're not sure, just leave the default "buildroot" value.

choice
	prompt "C library"
	default BR2_TOOLCHAIN_BUILDROOT_UCLIBC
	default BR2_TOOLCHAIN_BUILDROOT_GLIBC if BR2_powerpc64

config BR2_TOOLCHAIN_BUILDROOT_UCLIBC
	bool "uClibc-ng"
	depends on BR2_aarch64 || BR2_aarch64_be || BR2_arcle   || BR2_arceb  || \
		   BR2_arm     || BR2_armeb    || \
		   BR2_i386    || BR2_m68k   || BR2_microblaze || \
		   BR2_mips    || BR2_mipsel || BR2_mips64 || BR2_mips64el || \
		   BR2_or1k    || BR2_powerpc || BR2_riscv || BR2_sh2a   || \
		   BR2_sh4     || BR2_sh4eb   || BR2_sparc || BR2_xtensa || \
		   BR2_x86_64
	select BR2_TOOLCHAIN_USES_UCLIBC
	help
	  This option selects uClibc-ng as the C library for the
	  cross-compilation toolchain.

	  http://uclibc-ng.org

config BR2_TOOLCHAIN_BUILDROOT_GLIBC
	bool "glibc"
	depends on BR2_arm         || BR2_armeb      || BR2_aarch64 || \
		   BR2_aarch64_be  || BR2_i386       || BR2_mips    || \
		   BR2_mipsel      || BR2_mips64     || BR2_mips64el|| \
		   BR2_powerpc     || BR2_powerpc64  || BR2_powerpc64le || \
		   BR2_riscv       || BR2_s390x      || BR2_sh          || \
		   BR2_sparc64     || BR2_x86_64     || BR2_microblaze  || \
		   BR2_nios2       || (BR2_arc && BR2_ARC_ATOMIC_EXT)   || BR2_csky
	depends on BR2_USE_MMU
	depends on !BR2_STATIC_LIBS
	depends on BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_2
	depends on BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_10 || !BR2_powerpc64le
	depends on BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_5 || !BR2_MIPS_NAN_2008
	depends on BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_0 || !BR2_RISCV_64
	depends on !BR2_powerpc_SPE
	depends on BR2_RISCV_ISA_RVA || !BR2_riscv
	select BR2_TOOLCHAIN_USES_GLIBC
	# our glibc.mk enables RPC support
	select BR2_TOOLCHAIN_HAS_NATIVE_RPC
	help
	  This option selects glibc as the C library for the
	  cross-compilation toolchain.

	  http://www.gnu.org/software/libc/

comment "glibc needs a toolchain w/ dynamic library, kernel headers >= 3.2"
	depends on BR2_USE_MMU
	depends on BR2_STATIC_LIBS || !BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_2

# glibc >= 2.26 require kernel headers >= 3.10 on powerpc64le.
comment "glibc on powerpc64le needs a toolchain w/ headers >= 3.10"
	depends on BR2_powerpc64le
	depends on !BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_10

# Support for MIPS NAN2008 needs headers >= 4.5
comment "glibc on MIPS w/ NAN2008 needs a toolchain w/ headers >= 4.5"
	depends on BR2_MIPS_NAN_2008
	depends on !BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_5

config BR2_TOOLCHAIN_BUILDROOT_MUSL
	bool "musl"
	depends on BR2_aarch64	   || BR2_arm   || BR2_armeb   || BR2_i386 || \
		   BR2_microblaze  || BR2_mips  || BR2_mipsel  || BR2_mips64 || \
		   BR2_mips64el    || BR2_or1k  || BR2_powerpc || BR2_powerpc64 || \
		   BR2_powerpc64le || BR2_RISCV_64 || BR2_sh   || BR2_x86_64
	depends on !BR2_powerpc_SPE # not supported, build breaks
	depends on !(BR2_powerpc64 || BR2_powerpc64le) || BR2_POWERPC_CPU_HAS_ALTIVEC
	# sh2 nommu is supported by musl, but we don't have support
	# for it in Buildroot.
	depends on BR2_USE_MMU
	select BR2_TOOLCHAIN_USES_MUSL
	help
	  This option selects musl as the C library for the
	  cross-compilation toolchain.

	  https://www.musl-libc.org/

endchoice

config BR2_TOOLCHAIN_BUILDROOT_LIBC
	string
	default "uclibc" if BR2_TOOLCHAIN_BUILDROOT_UCLIBC
	default "glibc"  if BR2_TOOLCHAIN_BUILDROOT_GLIBC
	default "musl"	 if BR2_TOOLCHAIN_BUILDROOT_MUSL

source "package/linux-headers/Config.in.host"
source "package/linux-headers/Config.in"
source "package/musl/Config.in"
source "package/uclibc/Config.in"
source "package/glibc/Config.in"
source "package/binutils/Config.in.host"
source "package/gcc/Config.in.host"
source "package/elf2flt/Config.in.host"
endif