toolchain-external: support only one Linaro AArch64 toolchain at a time

Linaro toolchains are released so frequently (every month) that it
doesn't make much sense to support 3 consecutive versions. So, like we
do for ARM big-endian, let's support only one version at a time.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Acked-by: "Yann E. MORIN" <yann.morin.1998@free.fr>

toolchain/toolchain-external/Config.in

@@ -782,7 +782,7 @@ config BR2_TOOLCHAIN_EXTERNAL_XILINX_MICROBLAZEBE_V2
 	  Toolchain for the Microblaze architecture, from
 	  http://wiki.xilinx.com/mb-gnu-tools
 
-config BR2_TOOLCHAIN_EXTERNAL_LINARO_AARCH64_14_02
+config BR2_TOOLCHAIN_EXTERNAL_LINARO_AARCH64
 	bool "Linaro AArch64 14.02"
 	depends on BR2_aarch64
 	depends on BR2_HOSTARCH = "x86_64" || BR2_HOSTARCH = "x86"
@@ -796,34 +796,6 @@ config BR2_TOOLCHAIN_EXTERNAL_LINARO_AARCH64_14_02
 	  Toolchain for the AArch64 architecture, from
 	  http://www.linaro.org/engineering/armv8/
 
-config BR2_TOOLCHAIN_EXTERNAL_LINARO_AARCH64_14_01
-	bool "Linaro AArch64 14.01"
-	depends on BR2_aarch64
-	depends on BR2_HOSTARCH = "x86_64" || BR2_HOSTARCH = "x86"
-	depends on !BR2_PREFER_STATIC_LIB
-	select BR2_TOOLCHAIN_EXTERNAL_GLIBC
-	select BR2_INSTALL_LIBSTDCPP
-	select BR2_HOSTARCH_NEEDS_IA32_LIBS
-	select BR2_TOOLCHAIN_HAS_NATIVE_RPC
-	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_7
-	help
-	  Toolchain for the AArch64 architecture, from
-	  http://www.linaro.org/engineering/armv8/
-
-config BR2_TOOLCHAIN_EXTERNAL_LINARO_AARCH64_13_12
-	bool "Linaro AArch64 13.12"
-	depends on BR2_aarch64
-	depends on BR2_HOSTARCH = "x86_64" || BR2_HOSTARCH = "x86"
-	depends on !BR2_PREFER_STATIC_LIB
-	select BR2_TOOLCHAIN_EXTERNAL_GLIBC
-	select BR2_INSTALL_LIBSTDCPP
-	select BR2_HOSTARCH_NEEDS_IA32_LIBS
-	select BR2_TOOLCHAIN_HAS_NATIVE_RPC
-	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_7
-	help
-	  Toolchain for the AArch64 architecture, from
-	  http://www.linaro.org/engineering/armv8/
-
 config BR2_TOOLCHAIN_EXTERNAL_MUSL_CROSS
 	bool "Musl toolchain"
 	depends on (BR2_arm && BR2_ARM_EABI) || (BR2_armeb && BR2_ARM_EABI) || \
@@ -901,9 +873,7 @@ config BR2_TOOLCHAIN_EXTERNAL_PREFIX
 	default "arm-none-linux-gnueabi" if BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_ARM201311
 	default "arm-arago-linux-gnueabi" if BR2_TOOLCHAIN_EXTERNAL_ARAGO_ARMV7A_201109
 	default "arm-arago-linux-gnueabi" if BR2_TOOLCHAIN_EXTERNAL_ARAGO_ARMV5TE_201109
-	default "aarch64-linux-gnu"      if BR2_TOOLCHAIN_EXTERNAL_LINARO_AARCH64_14_02
-	default "aarch64-linux-gnu"      if BR2_TOOLCHAIN_EXTERNAL_LINARO_AARCH64_14_01
-	default "aarch64-linux-gnu"      if BR2_TOOLCHAIN_EXTERNAL_LINARO_AARCH64_13_12
+	default "aarch64-linux-gnu"      if BR2_TOOLCHAIN_EXTERNAL_LINARO_AARCH64
 	default "microblazeel-unknown-linux-gnu" if BR2_TOOLCHAIN_EXTERNAL_XILINX_MICROBLAZEEL_14_3
 	default "microblazeel-unknown-linux-gnu" if BR2_TOOLCHAIN_EXTERNAL_XILINX_MICROBLAZEEL_V2
 	default "microblaze-unknown-linux-gnu" if BR2_TOOLCHAIN_EXTERNAL_XILINX_MICROBLAZEBE_14_3

toolchain/toolchain-external/toolchain-external.mk

@@ -350,15 +350,7 @@ TOOLCHAIN_EXTERNAL_SOURCE = lin32-microblaze-unknown-linux-gnu_14.3_early.tar.xz
 else ifeq ($(BR2_TOOLCHAIN_EXTERNAL_XILINX_MICROBLAZEBE_V2),y)
 TOOLCHAIN_EXTERNAL_SITE = http://sources.buildroot.net/
 TOOLCHAIN_EXTERNAL_SOURCE = microblaze-unknown-linux-gnu.tgz
-else ifeq ($(BR2_TOOLCHAIN_EXTERNAL_LINARO_AARCH64_13_12),y)
-TOOLCHAIN_EXTERNAL_SITE = http://releases.linaro.org/13.12/components/toolchain/binaries/
-TOOLCHAIN_EXTERNAL_SOURCE = gcc-linaro-aarch64-linux-gnu-4.8-2013.12-linux.tar.xz
-TOOLCHAIN_EXTERNAL_POST_INSTALL_STAGING_HOOKS += TOOLCHAIN_EXTERNAL_LINARO_AARCH64_SYMLINK
-else ifeq ($(BR2_TOOLCHAIN_EXTERNAL_LINARO_AARCH64_14_01),y)
-TOOLCHAIN_EXTERNAL_SITE = http://releases.linaro.org/14.01/components/toolchain/binaries/
-TOOLCHAIN_EXTERNAL_SOURCE = gcc-linaro-aarch64-linux-gnu-4.8-2014.01_linux.tar.xz
-TOOLCHAIN_EXTERNAL_POST_INSTALL_STAGING_HOOKS += TOOLCHAIN_EXTERNAL_LINARO_AARCH64_SYMLINK
-else ifeq ($(BR2_TOOLCHAIN_EXTERNAL_LINARO_AARCH64_14_02),y)
+else ifeq ($(BR2_TOOLCHAIN_EXTERNAL_LINARO_AARCH64),y)
 TOOLCHAIN_EXTERNAL_SITE = http://releases.linaro.org/14.02/components/toolchain/binaries/
 TOOLCHAIN_EXTERNAL_SOURCE = gcc-linaro-aarch64-linux-gnu-4.8-2014.02_linux.tar.xz
 TOOLCHAIN_EXTERNAL_POST_INSTALL_STAGING_HOOKS += TOOLCHAIN_EXTERNAL_LINARO_AARCH64_SYMLINK