support/config-fragments/autobuild: use external toolchains in RISC-V configs

This commit replaces the two RISC-V configurations used for the
autobuilders to use pre-built external toolchains rather than internal
toolchains. This saves quite a bit of build time in the autobuilders,
and also allows people to reproduce build issues in a much more
efficient way, since rebuilding the toolchain is not needed.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Cc: Mark Corbin <mark.corbin@embecosm.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

support/config-fragments/autobuild/br-riscv32-internal-glibc.config

@@ -1,3 +0,0 @@
-BR2_riscv=y
-BR2_RISCV_32=y
-BR2_TOOLCHAIN_BUILDROOT_GLIBC=y

support/config-fragments/autobuild/br-riscv32.config

@@ -0,0 +1,8 @@
+BR2_riscv=y
+BR2_RISCV_32=y
+BR2_TOOLCHAIN_EXTERNAL=y
+BR2_TOOLCHAIN_EXTERNAL_DOWNLOAD=y
+BR2_TOOLCHAIN_EXTERNAL_URL="http://autobuild.buildroot.net/toolchains/tarballs/br-riscv32-2019.02-rc1.tar.bz2"
+BR2_TOOLCHAIN_EXTERNAL_HEADERS_4_19=y
+BR2_TOOLCHAIN_EXTERNAL_CUSTOM_GLIBC=y
+BR2_TOOLCHAIN_EXTERNAL_CXX=y

support/config-fragments/autobuild/br-riscv64-internal-glibc.config

@@ -1,3 +0,0 @@
-BR2_riscv=y
-BR2_RISCV_64=y
-BR2_TOOLCHAIN_BUILDROOT_GLIBC=y

support/config-fragments/autobuild/br-riscv64.config

@@ -0,0 +1,7 @@
+BR2_riscv=y
+BR2_TOOLCHAIN_EXTERNAL=y
+BR2_TOOLCHAIN_EXTERNAL_DOWNLOAD=y
+BR2_TOOLCHAIN_EXTERNAL_URL="http://autobuild.buildroot.net/toolchains/tarballs/br-riscv64-2019.02-rc1.tar.bz2"
+BR2_TOOLCHAIN_EXTERNAL_HEADERS_4_19=y
+BR2_TOOLCHAIN_EXTERNAL_CUSTOM_GLIBC=y
+BR2_TOOLCHAIN_EXTERNAL_CXX=y

support/config-fragments/autobuild/toolchain-configs.csv

@@ -51,8 +51,8 @@ support/config-fragments/autobuild/br-powerpc64le-power8-glibc.config,x86_64
 support/config-fragments/autobuild/br-powerpc64-power7-glibc.config,x86_64
 support/config-fragments/autobuild/br-powerpc-e500mc-full.config,x86_64
 support/config-fragments/autobuild/br-powerpc-internal-full.config,any
-support/config-fragments/autobuild/br-riscv32-internal-glibc.config,any
-support/config-fragments/autobuild/br-riscv64-internal-glibc.config,any
+support/config-fragments/autobuild/br-riscv32.config,x86_64
+support/config-fragments/autobuild/br-riscv64.config,x86_64
 support/config-fragments/autobuild/br-sh4-full.config,x86_64
 support/config-fragments/autobuild/br-sparc-uclibc.config,x86_64
 support/config-fragments/autobuild/br-sparc64-glibc.config,x86_64