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+config BR2_TOOLCHAIN_EXTERNAL_CUSTOM
+ bool "Custom toolchain"
+ help
+ Use this option to use a custom toolchain pre-installed on
+ your system.
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+if BR2_TOOLCHAIN_EXTERNAL_CUSTOM
+
+config BR2_PACKAGE_PROVIDES_TOOLCHAIN_EXTERNAL
+ default "toolchain-external-custom"
+
+config BR2_TOOLCHAIN_EXTERNAL_URL
+ string "Toolchain URL"
+ depends on BR2_TOOLCHAIN_EXTERNAL_DOWNLOAD
+ help
+ URL of the custom toolchain tarball to download and install.
+
+config BR2_TOOLCHAIN_EXTERNAL_CUSTOM_PREFIX
+ string "Toolchain prefix"
+ default "$(ARCH)-linux"
+
+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_8
+ bool "4.8.x"
+ select BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_8
+
+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/uClibc-ng"
+ 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 (available from http://www.uclibc.org/)
+ or uClibc-ng (available from http://www.uclibc-ng.org)
+ C library.
+
+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 "(e)glibc only available with shared lib support"
+ depends on BR2_STATIC_LIBS
+
+config BR2_TOOLCHAIN_EXTERNAL_CUSTOM_MUSL
+ bool "musl (experimental)"
+ 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_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. They will be copied to the
+ target's /lib directory.
+
+endif
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+################################################################################
+#
+# toolchain-external-custom
+#
+################################################################################
+
+TOOLCHAIN_EXTERNAL_CUSTOM_SITE = $(patsubst %/,%,$(dir $(call qstrip,$(BR2_TOOLCHAIN_EXTERNAL_URL))))
+TOOLCHAIN_EXTERNAL_CUSTOM_SOURCE = $(notdir $(call qstrip,$(BR2_TOOLCHAIN_EXTERNAL_URL)))
+TOOLCHAIN_EXTERNAL_CUSTOM_PREFIX = $(call qstrip,$(BR2_TOOLCHAIN_EXTERNAL_CUSTOM_PREFIX))
+
+ifeq ($(BR2_TOOLCHAIN_EXTERNAL_CUSTOM),y)
+# We can't check hashes for custom downloaded toolchains
+BR_NO_CHECK_HASH_FOR += $(TOOLCHAIN_EXTERNAL_SOURCE)
+endif
+
+$(eval $(toolchain-external-package))