diff --git a/support/config-fragments/autobuild/armv5-ctng-linux-gnueabi.config b/support/config-fragments/autobuild/armv5-ctng-linux-gnueabi.config
new file mode 100644
index 0000000000..c2f4cb62ca
--- /dev/null
+++ b/support/config-fragments/autobuild/armv5-ctng-linux-gnueabi.config
@@ -0,0 +1,10 @@
+BR2_arm=y
+BR2_TOOLCHAIN_EXTERNAL=y
+BR2_TOOLCHAIN_EXTERNAL_CUSTOM=y
+BR2_TOOLCHAIN_EXTERNAL_DOWNLOAD=y
+BR2_TOOLCHAIN_EXTERNAL_URL="http://autobuild.buildroot.org/toolchains/tarballs/armv5-ctng-linux-gnueabi.tar.xz"
+BR2_TOOLCHAIN_EXTERNAL_CUSTOM_PREFIX="armv5-ctng-linux-gnueabi"
+BR2_TOOLCHAIN_EXTERNAL_GCC_4_8=y
+BR2_TOOLCHAIN_EXTERNAL_HEADERS_3_12=y
+BR2_TOOLCHAIN_EXTERNAL_CUSTOM_GLIBC=y
+BR2_TOOLCHAIN_EXTERNAL_CXX=y
diff --git a/support/config-fragments/autobuild/armv7-ctng-linux-gnueabihf.config b/support/config-fragments/autobuild/armv7-ctng-linux-gnueabihf.config
new file mode 100644
index 0000000000..60ec952940
--- /dev/null
+++ b/support/config-fragments/autobuild/armv7-ctng-linux-gnueabihf.config
@@ -0,0 +1,13 @@
+BR2_arm=y
+BR2_cortex_a9=y
+BR2_ARM_ENABLE_NEON=y
+BR2_ARM_ENABLE_VFP=y
+BR2_TOOLCHAIN_EXTERNAL=y
+BR2_TOOLCHAIN_EXTERNAL_CUSTOM=y
+BR2_TOOLCHAIN_EXTERNAL_DOWNLOAD=y
+BR2_TOOLCHAIN_EXTERNAL_URL="http://autobuild.buildroot.org/toolchains/tarballs/armv7-ctng-linux-gnueabihf.tar.xz"
+BR2_TOOLCHAIN_EXTERNAL_CUSTOM_PREFIX="armv7-ctng-linux-gnueabihf"
+BR2_TOOLCHAIN_EXTERNAL_GCC_4_8=y
+BR2_TOOLCHAIN_EXTERNAL_HEADERS_3_12=y
+BR2_TOOLCHAIN_EXTERNAL_CUSTOM_GLIBC=y
+BR2_TOOLCHAIN_EXTERNAL_CXX=y
diff --git a/support/config-fragments/autobuild/br-aarch64-glibc.config b/support/config-fragments/autobuild/br-aarch64-glibc.config
new file mode 100644
index 0000000000..6501f15ec5
--- /dev/null
+++ b/support/config-fragments/autobuild/br-aarch64-glibc.config
@@ -0,0 +1,9 @@
+BR2_aarch64=y
+BR2_TOOLCHAIN_EXTERNAL=y
+BR2_TOOLCHAIN_EXTERNAL_CUSTOM=y
+BR2_TOOLCHAIN_EXTERNAL_DOWNLOAD=y
+BR2_TOOLCHAIN_EXTERNAL_URL="http://autobuild.buildroot.org/toolchains/tarballs/br-aarch64-glibc-2017.05-1078-g95b1dae.tar.bz2"
+BR2_TOOLCHAIN_EXTERNAL_GCC_6=y
+BR2_TOOLCHAIN_EXTERNAL_HEADERS_4_1=y
+BR2_TOOLCHAIN_EXTERNAL_CUSTOM_GLIBC=y
+BR2_TOOLCHAIN_EXTERNAL_CXX=y
diff --git a/support/config-fragments/autobuild/br-arc-full-internal.config b/support/config-fragments/autobuild/br-arc-full-internal.config
new file mode 100644
index 0000000000..4755c9e45b
--- /dev/null
+++ b/support/config-fragments/autobuild/br-arc-full-internal.config
@@ -0,0 +1,3 @@
+BR2_arcle=y
+BR2_TOOLCHAIN_BUILDROOT_LOCALE=y
+BR2_TOOLCHAIN_BUILDROOT_CXX=y
diff --git a/support/config-fragments/autobuild/br-arcle-hs38.config b/support/config-fragments/autobuild/br-arcle-hs38.config
new file mode 100644
index 0000000000..b9f5764603
--- /dev/null
+++ b/support/config-fragments/autobuild/br-arcle-hs38.config
@@ -0,0 +1,11 @@
+BR2_arcle=y
+BR2_archs38=y
+BR2_TOOLCHAIN_EXTERNAL=y
+BR2_TOOLCHAIN_EXTERNAL_CUSTOM=y
+BR2_TOOLCHAIN_EXTERNAL_DOWNLOAD=y
+BR2_TOOLCHAIN_EXTERNAL_URL="http://autobuild.buildroot.org/toolchains/tarballs/br-arcle-hs38-full-2017.05-1078-g95b1dae.tar.bz2"
+BR2_TOOLCHAIN_EXTERNAL_GCC_6=y
+BR2_TOOLCHAIN_EXTERNAL_HEADERS_4_1=y
+BR2_TOOLCHAIN_EXTERNAL_LOCALE=y
+# BR2_TOOLCHAIN_EXTERNAL_HAS_THREADS_DEBUG is not set
+BR2_TOOLCHAIN_EXTERNAL_CXX=y
diff --git a/support/config-fragments/autobuild/br-arm-basic.config b/support/config-fragments/autobuild/br-arm-basic.config
new file mode 100644
index 0000000000..e47c742c6c
--- /dev/null
+++ b/support/config-fragments/autobuild/br-arm-basic.config
@@ -0,0 +1,8 @@
+BR2_arm=y
+BR2_TOOLCHAIN_EXTERNAL=y
+BR2_TOOLCHAIN_EXTERNAL_CUSTOM=y
+BR2_TOOLCHAIN_EXTERNAL_DOWNLOAD=y
+BR2_TOOLCHAIN_EXTERNAL_URL="http://autobuild.buildroot.org/toolchains/tarballs/br-arm-basic-2017.05-1078-g95b1dae.tar.bz2"
+BR2_TOOLCHAIN_EXTERNAL_GCC_6=y
+BR2_TOOLCHAIN_EXTERNAL_HEADERS_4_12=y
+# BR2_TOOLCHAIN_EXTERNAL_HAS_THREADS_DEBUG is not set
diff --git a/support/config-fragments/autobuild/br-arm-cortex-a9-glibc.config b/support/config-fragments/autobuild/br-arm-cortex-a9-glibc.config
new file mode 100644
index 0000000000..662de17b37
--- /dev/null
+++ b/support/config-fragments/autobuild/br-arm-cortex-a9-glibc.config
@@ -0,0 +1,11 @@
+BR2_arm=y
+BR2_cortex_a9=y
+BR2_ARM_ENABLE_VFP=y
+BR2_TOOLCHAIN_EXTERNAL=y
+BR2_TOOLCHAIN_EXTERNAL_CUSTOM=y
+BR2_TOOLCHAIN_EXTERNAL_DOWNLOAD=y
+BR2_TOOLCHAIN_EXTERNAL_URL="http://autobuild.buildroot.org/toolchains/tarballs/br-arm-cortex-a9-glibc-2017.05-1078-g95b1dae.tar.bz2"
+BR2_TOOLCHAIN_EXTERNAL_GCC_7=y
+BR2_TOOLCHAIN_EXTERNAL_HEADERS_4_12=y
+BR2_TOOLCHAIN_EXTERNAL_CUSTOM_GLIBC=y
+BR2_TOOLCHAIN_EXTERNAL_CXX=y
diff --git a/support/config-fragments/autobuild/br-arm-cortex-a9-musl.config b/support/config-fragments/autobuild/br-arm-cortex-a9-musl.config
new file mode 100644
index 0000000000..65e2edfa86
--- /dev/null
+++ b/support/config-fragments/autobuild/br-arm-cortex-a9-musl.config
@@ -0,0 +1,11 @@
+BR2_arm=y
+BR2_cortex_a9=y
+BR2_ARM_ENABLE_VFP=y
+BR2_TOOLCHAIN_EXTERNAL=y
+BR2_TOOLCHAIN_EXTERNAL_CUSTOM=y
+BR2_TOOLCHAIN_EXTERNAL_DOWNLOAD=y
+BR2_TOOLCHAIN_EXTERNAL_URL="http://autobuild.buildroot.org/toolchains/tarballs/br-arm-cortex-a9-musl-2017.05-1078-g95b1dae.tar.bz2"
+BR2_TOOLCHAIN_EXTERNAL_GCC_6=y
+BR2_TOOLCHAIN_EXTERNAL_HEADERS_4_12=y
+BR2_TOOLCHAIN_EXTERNAL_CUSTOM_MUSL=y
+BR2_TOOLCHAIN_EXTERNAL_CXX=y
diff --git a/support/config-fragments/autobuild/br-arm-cortex-m4-full.config b/support/config-fragments/autobuild/br-arm-cortex-m4-full.config
new file mode 100644
index 0000000000..fc514b1d97
--- /dev/null
+++ b/support/config-fragments/autobuild/br-arm-cortex-m4-full.config
@@ -0,0 +1,12 @@
+BR2_arm=y
+BR2_cortex_m4=y
+BR2_TOOLCHAIN_EXTERNAL=y
+BR2_TOOLCHAIN_EXTERNAL_CUSTOM=y
+BR2_TOOLCHAIN_EXTERNAL_DOWNLOAD=y
+BR2_TOOLCHAIN_EXTERNAL_URL="http://autobuild.buildroot.org/toolchains/tarballs/br-arm-cortex-m4-full-2017.05-1078-g95b1dae.tar.bz2"
+BR2_TOOLCHAIN_EXTERNAL_GCC_6=y
+BR2_TOOLCHAIN_EXTERNAL_HEADERS_4_12=y
+BR2_TOOLCHAIN_EXTERNAL_LOCALE=y
+# BR2_TOOLCHAIN_EXTERNAL_HAS_THREADS_DEBUG is not set
+# BR2_TOOLCHAIN_EXTERNAL_HAS_THREADS_NPTL is not set
+BR2_TOOLCHAIN_EXTERNAL_CXX=y
diff --git a/support/config-fragments/autobuild/br-arm-full-nothread.config b/support/config-fragments/autobuild/br-arm-full-nothread.config
new file mode 100644
index 0000000000..1e260ec90d
--- /dev/null
+++ b/support/config-fragments/autobuild/br-arm-full-nothread.config
@@ -0,0 +1,11 @@
+BR2_arm=y
+BR2_arm1176jzf_s=y
+BR2_TOOLCHAIN_EXTERNAL=y
+BR2_TOOLCHAIN_EXTERNAL_CUSTOM=y
+BR2_TOOLCHAIN_EXTERNAL_DOWNLOAD=y
+BR2_TOOLCHAIN_EXTERNAL_URL="http://autobuild.buildroot.org/toolchains/tarballs/br-arm11-full-nothread-2017.05-1078-g95b1dae.tar.bz2"
+BR2_TOOLCHAIN_EXTERNAL_GCC_6=y
+BR2_TOOLCHAIN_EXTERNAL_HEADERS_4_12=y
+BR2_TOOLCHAIN_EXTERNAL_LOCALE=y
+# BR2_TOOLCHAIN_EXTERNAL_HAS_THREADS is not set
+BR2_TOOLCHAIN_EXTERNAL_CXX=y
diff --git a/support/config-fragments/autobuild/br-arm-full-static.config b/support/config-fragments/autobuild/br-arm-full-static.config
new file mode 100644
index 0000000000..065c454653
--- /dev/null
+++ b/support/config-fragments/autobuild/br-arm-full-static.config
@@ -0,0 +1,11 @@
+BR2_arm=y
+BR2_STATIC_LIBS=y
+BR2_TOOLCHAIN_EXTERNAL=y
+BR2_TOOLCHAIN_EXTERNAL_CUSTOM=y
+BR2_TOOLCHAIN_EXTERNAL_DOWNLOAD=y
+BR2_TOOLCHAIN_EXTERNAL_URL="http://autobuild.buildroot.org/toolchains/tarballs/br-arm-full-static-2017.05-1078-g95b1dae.tar.bz2"
+BR2_TOOLCHAIN_EXTERNAL_GCC_6=y
+BR2_TOOLCHAIN_EXTERNAL_HEADERS_3_10=y
+BR2_TOOLCHAIN_EXTERNAL_LOCALE=y
+# BR2_TOOLCHAIN_EXTERNAL_HAS_THREADS_DEBUG is not set
+BR2_TOOLCHAIN_EXTERNAL_CXX=y
diff --git a/support/config-fragments/autobuild/br-arm-full.config b/support/config-fragments/autobuild/br-arm-full.config
new file mode 100644
index 0000000000..84c225d883
--- /dev/null
+++ b/support/config-fragments/autobuild/br-arm-full.config
@@ -0,0 +1,10 @@
+BR2_arm=y
+BR2_TOOLCHAIN_EXTERNAL=y
+BR2_TOOLCHAIN_EXTERNAL_CUSTOM=y
+BR2_TOOLCHAIN_EXTERNAL_DOWNLOAD=y
+BR2_TOOLCHAIN_EXTERNAL_URL="http://autobuild.buildroot.org/toolchains/tarballs/br-arm-full-2017.05-1078-g95b1dae.tar.bz2"
+BR2_TOOLCHAIN_EXTERNAL_GCC_4_9=y
+BR2_TOOLCHAIN_EXTERNAL_HEADERS_3_10=y
+BR2_TOOLCHAIN_EXTERNAL_LOCALE=y
+# BR2_TOOLCHAIN_EXTERNAL_HAS_THREADS_DEBUG is not set
+BR2_TOOLCHAIN_EXTERNAL_CXX=y
diff --git a/support/config-fragments/autobuild/br-arm-internal-full.config b/support/config-fragments/autobuild/br-arm-internal-full.config
new file mode 100644
index 0000000000..2e70534882
--- /dev/null
+++ b/support/config-fragments/autobuild/br-arm-internal-full.config
@@ -0,0 +1,6 @@
+BR2_arm=y
+BR2_ARM_EABI=y
+BR2_UCLIBC_VERSION_NG=y
+BR2_TOOLCHAIN_BUILDROOT_LOCALE=y
+BR2_TOOLCHAIN_BUILDROOT_WCHAR=y
+BR2_TOOLCHAIN_BUILDROOT_CXX=y
diff --git a/support/config-fragments/autobuild/br-bfin-full.config b/support/config-fragments/autobuild/br-bfin-full.config
new file mode 100644
index 0000000000..7389bb53c3
--- /dev/null
+++ b/support/config-fragments/autobuild/br-bfin-full.config
@@ -0,0 +1,12 @@
+BR2_bfin=y
+BR2_bf512=y
+BR2_TOOLCHAIN_EXTERNAL=y
+BR2_TOOLCHAIN_EXTERNAL_CUSTOM=y
+BR2_TOOLCHAIN_EXTERNAL_DOWNLOAD=y
+BR2_TOOLCHAIN_EXTERNAL_URL="http://autobuild.buildroot.net/toolchains/tarballs/br-bfin-full-2017.05-1078-g95b1dae.tar.bz2"
+BR2_TOOLCHAIN_EXTERNAL_GCC_6=y
+BR2_TOOLCHAIN_EXTERNAL_HEADERS_4_12=y
+BR2_TOOLCHAIN_EXTERNAL_LOCALE=y
+# BR2_TOOLCHAIN_EXTERNAL_HAS_THREADS_DEBUG is not set
+# BR2_TOOLCHAIN_EXTERNAL_HAS_THREADS_NPTL is not set
+BR2_TOOLCHAIN_EXTERNAL_CXX=y
diff --git a/support/config-fragments/autobuild/br-i386-pentium-mmx-musl.config b/support/config-fragments/autobuild/br-i386-pentium-mmx-musl.config
new file mode 100644
index 0000000000..65119c321e
--- /dev/null
+++ b/support/config-fragments/autobuild/br-i386-pentium-mmx-musl.config
@@ -0,0 +1,10 @@
+BR2_x86_pentium_mmx=y
+BR2_TOOLCHAIN_EXTERNAL=y
+BR2_TOOLCHAIN_EXTERNAL_CUSTOM=y
+BR2_TOOLCHAIN_EXTERNAL_DOWNLOAD=y
+BR2_TOOLCHAIN_EXTERNAL_URL="http://autobuild.buildroot.net/toolchains/tarballs/br-i386-pentium-mmx-musl-2017.05-1078-g95b1dae.tar.bz2"
+BR2_TOOLCHAIN_EXTERNAL_GCC_6=y
+BR2_TOOLCHAIN_EXTERNAL_HEADERS_3_12=y
+BR2_TOOLCHAIN_EXTERNAL_CUSTOM_MUSL=y
+# BR2_TOOLCHAIN_EXTERNAL_HAS_SSP is not set
+BR2_TOOLCHAIN_EXTERNAL_CXX=y
diff --git a/support/config-fragments/autobuild/br-i386-pentium4-full.config b/support/config-fragments/autobuild/br-i386-pentium4-full.config
new file mode 100644
index 0000000000..37233c5975
--- /dev/null
+++ b/support/config-fragments/autobuild/br-i386-pentium4-full.config
@@ -0,0 +1,10 @@
+BR2_x86_pentium4=y
+BR2_TOOLCHAIN_EXTERNAL=y
+BR2_TOOLCHAIN_EXTERNAL_CUSTOM=y
+BR2_TOOLCHAIN_EXTERNAL_DOWNLOAD=y
+BR2_TOOLCHAIN_EXTERNAL_URL="http://autobuild.buildroot.org/toolchains/tarballs/br-i386-pentium4-full-2017.05-1078-g95b1dae.tar.bz2"
+BR2_TOOLCHAIN_EXTERNAL_GCC_6=y
+BR2_TOOLCHAIN_EXTERNAL_HEADERS_3_2=y
+BR2_TOOLCHAIN_EXTERNAL_LOCALE=y
+# BR2_TOOLCHAIN_EXTERNAL_HAS_THREADS_DEBUG is not set
+BR2_TOOLCHAIN_EXTERNAL_CXX=y
diff --git a/support/config-fragments/autobuild/br-m68k-5208-full.config b/support/config-fragments/autobuild/br-m68k-5208-full.config
new file mode 100644
index 0000000000..e6c6bdabad
--- /dev/null
+++ b/support/config-fragments/autobuild/br-m68k-5208-full.config
@@ -0,0 +1,11 @@
+BR2_m68k=y
+BR2_m68k_cf5208=y
+BR2_TOOLCHAIN_EXTERNAL=y
+BR2_TOOLCHAIN_EXTERNAL_DOWNLOAD=y
+BR2_TOOLCHAIN_EXTERNAL_URL="http://autobuild.buildroot.net/toolchains/tarballs/br-m68k-5208-full-2017.05-1078-g95b1dae.tar.bz2"
+BR2_TOOLCHAIN_EXTERNAL_GCC_6=y
+BR2_TOOLCHAIN_EXTERNAL_HEADERS_4_12=y
+BR2_TOOLCHAIN_EXTERNAL_LOCALE=y
+# BR2_TOOLCHAIN_EXTERNAL_HAS_THREADS_DEBUG is not set
+# BR2_TOOLCHAIN_EXTERNAL_HAS_THREADS_NPTL is not set
+BR2_TOOLCHAIN_EXTERNAL_CXX=y
diff --git a/support/config-fragments/autobuild/br-m68k-68040-full.config b/support/config-fragments/autobuild/br-m68k-68040-full.config
new file mode 100644
index 0000000000..5cf68def9f
--- /dev/null
+++ b/support/config-fragments/autobuild/br-m68k-68040-full.config
@@ -0,0 +1,10 @@
+BR2_m68k=y
+BR2_TOOLCHAIN_EXTERNAL=y
+BR2_TOOLCHAIN_EXTERNAL_DOWNLOAD=y
+BR2_TOOLCHAIN_EXTERNAL_URL="http://autobuild.buildroot.net/toolchains/tarballs/br-m68k-68040-full-2017.05-1078-g95b1dae.tar.bz2"
+BR2_TOOLCHAIN_EXTERNAL_GCC_6=y
+BR2_TOOLCHAIN_EXTERNAL_HEADERS_4_12=y
+BR2_TOOLCHAIN_EXTERNAL_LOCALE=y
+# BR2_TOOLCHAIN_EXTERNAL_HAS_THREADS_DEBUG is not set
+# BR2_TOOLCHAIN_EXTERNAL_HAS_THREADS_NPTL is not set
+BR2_TOOLCHAIN_EXTERNAL_CXX=y
diff --git a/support/config-fragments/autobuild/br-microblazeel-full-internal.config b/support/config-fragments/autobuild/br-microblazeel-full-internal.config
new file mode 100644
index 0000000000..0d2d7df8f1
--- /dev/null
+++ b/support/config-fragments/autobuild/br-microblazeel-full-internal.config
@@ -0,0 +1 @@
+BR2_microblazeel=y
diff --git a/support/config-fragments/autobuild/br-microblazeel-full.config b/support/config-fragments/autobuild/br-microblazeel-full.config
new file mode 100644
index 0000000000..4cd72d1ef2
--- /dev/null
+++ b/support/config-fragments/autobuild/br-microblazeel-full.config
@@ -0,0 +1,10 @@
+BR2_microblazeel=y
+BR2_TOOLCHAIN_EXTERNAL=y
+BR2_TOOLCHAIN_EXTERNAL_DOWNLOAD=y
+BR2_TOOLCHAIN_EXTERNAL_URL="http://autobuild.buildroot.org/toolchains/tarballs/br-microblaze-full-2017.05-1078-g95b1dae.tar.bz2"
+BR2_TOOLCHAIN_EXTERNAL_GCC_6=y
+BR2_TOOLCHAIN_EXTERNAL_HEADERS_4_1=y
+BR2_TOOLCHAIN_EXTERNAL_LOCALE=y
+# BR2_TOOLCHAIN_EXTERNAL_HAS_THREADS_DEBUG is not set
+# BR2_TOOLCHAIN_EXTERNAL_HAS_THREADS_NPTL is not set
+BR2_TOOLCHAIN_EXTERNAL_CXX=y
diff --git a/support/config-fragments/autobuild/br-mips32r6-el-hf-glibc.config b/support/config-fragments/autobuild/br-mips32r6-el-hf-glibc.config
new file mode 100644
index 0000000000..86fb0148ec
--- /dev/null
+++ b/support/config-fragments/autobuild/br-mips32r6-el-hf-glibc.config
@@ -0,0 +1,11 @@
+BR2_mipsel=y
+BR2_mips_32r6=y
+# BR2_MIPS_SOFT_FLOAT is not set
+BR2_TOOLCHAIN_EXTERNAL=y
+BR2_TOOLCHAIN_EXTERNAL_CUSTOM=y
+BR2_TOOLCHAIN_EXTERNAL_DOWNLOAD=y
+BR2_TOOLCHAIN_EXTERNAL_URL="http://autobuild.buildroot.org/toolchains/tarballs/br-mips32r6-el-hf-2017.05-1078-g95b1dae.tar.bz2"
+BR2_TOOLCHAIN_EXTERNAL_GCC_6=y
+BR2_TOOLCHAIN_EXTERNAL_HEADERS_4_12=y
+BR2_TOOLCHAIN_EXTERNAL_CUSTOM_GLIBC=y
+BR2_TOOLCHAIN_EXTERNAL_CXX=y
diff --git a/support/config-fragments/autobuild/br-mips64-n64-full.config b/support/config-fragments/autobuild/br-mips64-n64-full.config
new file mode 100644
index 0000000000..503f0a2e7c
--- /dev/null
+++ b/support/config-fragments/autobuild/br-mips64-n64-full.config
@@ -0,0 +1,10 @@
+BR2_mips64el=y
+BR2_MIPS_NABI64=y
+# BR2_MIPS_SOFT_FLOAT is not set
+BR2_TOOLCHAIN_EXTERNAL=y
+BR2_TOOLCHAIN_EXTERNAL_DOWNLOAD=y
+BR2_TOOLCHAIN_EXTERNAL_URL="http://autobuild.buildroot.org/toolchains/tarballs/br-mips64-n64-full-2017.05-1078-g95b1dae.tar.bz2"
+BR2_TOOLCHAIN_EXTERNAL_GCC_4_9=y
+BR2_TOOLCHAIN_EXTERNAL_HEADERS_4_12=y
+BR2_TOOLCHAIN_EXTERNAL_LOCALE=y
+BR2_TOOLCHAIN_EXTERNAL_CXX=y
diff --git a/support/config-fragments/autobuild/br-mips64r6-el-hf-glibc.config b/support/config-fragments/autobuild/br-mips64r6-el-hf-glibc.config
new file mode 100644
index 0000000000..a8f9cb7f34
--- /dev/null
+++ b/support/config-fragments/autobuild/br-mips64r6-el-hf-glibc.config
@@ -0,0 +1,12 @@
+BR2_mips64el=y
+BR2_mips_64r6=y
+BR2_MIPS_NABI64=y
+# BR2_MIPS_SOFT_FLOAT is not set
+BR2_TOOLCHAIN_EXTERNAL=y
+BR2_TOOLCHAIN_EXTERNAL_CUSTOM=y
+BR2_TOOLCHAIN_EXTERNAL_DOWNLOAD=y
+BR2_TOOLCHAIN_EXTERNAL_URL="http://autobuild.buildroot.org/toolchains/tarballs/br-mips64r6-n64-el-hf-2017.05-1078-g95b1dae.tar.bz2"
+BR2_TOOLCHAIN_EXTERNAL_GCC_6=y
+BR2_TOOLCHAIN_EXTERNAL_HEADERS_4_12=y
+BR2_TOOLCHAIN_EXTERNAL_CUSTOM_GLIBC=y
+BR2_TOOLCHAIN_EXTERNAL_CXX=y
diff --git a/support/config-fragments/autobuild/br-mipsel-o32-full.config b/support/config-fragments/autobuild/br-mipsel-o32-full.config
new file mode 100644
index 0000000000..e6cedfa225
--- /dev/null
+++ b/support/config-fragments/autobuild/br-mipsel-o32-full.config
@@ -0,0 +1,10 @@
+BR2_mipsel=y
+BR2_TOOLCHAIN_EXTERNAL=y
+BR2_TOOLCHAIN_EXTERNAL_CUSTOM=y
+BR2_TOOLCHAIN_EXTERNAL_DOWNLOAD=y
+BR2_TOOLCHAIN_EXTERNAL_URL="http://autobuild.buildroot.org/toolchains/tarballs/br-mipsel-o32-full-2017.05-1078-g95b1dae.tar.bz2"
+BR2_TOOLCHAIN_EXTERNAL_GCC_6=y
+BR2_TOOLCHAIN_EXTERNAL_HEADERS_4_12=y
+BR2_TOOLCHAIN_EXTERNAL_LOCALE=y
+# BR2_TOOLCHAIN_EXTERNAL_HAS_THREADS_DEBUG is not set
+BR2_TOOLCHAIN_EXTERNAL_CXX=y
diff --git a/support/config-fragments/autobuild/br-nios2-glibc.config b/support/config-fragments/autobuild/br-nios2-glibc.config
new file mode 100644
index 0000000000..c63e4a22cd
--- /dev/null
+++ b/support/config-fragments/autobuild/br-nios2-glibc.config
@@ -0,0 +1,9 @@
+BR2_nios2=y
+BR2_TOOLCHAIN_EXTERNAL=y
+BR2_TOOLCHAIN_EXTERNAL_CUSTOM=y
+BR2_TOOLCHAIN_EXTERNAL_DOWNLOAD=y
+BR2_TOOLCHAIN_EXTERNAL_URL="http://autobuild.buildroot.org/toolchains/tarballs/br-nios2-full-2017.05-1078-g95b1dae.tar.bz2"
+BR2_TOOLCHAIN_EXTERNAL_GCC_6=y
+BR2_TOOLCHAIN_EXTERNAL_HEADERS_4_12=y
+BR2_TOOLCHAIN_EXTERNAL_CUSTOM_GLIBC=y
+BR2_TOOLCHAIN_EXTERNAL_CXX=y
diff --git a/support/config-fragments/autobuild/br-openrisc-uclibc.config b/support/config-fragments/autobuild/br-openrisc-uclibc.config
new file mode 100644
index 0000000000..04d6b3c8bd
--- /dev/null
+++ b/support/config-fragments/autobuild/br-openrisc-uclibc.config
@@ -0,0 +1,10 @@
+BR2_or1k=y
+BR2_TOOLCHAIN_EXTERNAL=y
+BR2_TOOLCHAIN_EXTERNAL_DOWNLOAD=y
+BR2_TOOLCHAIN_EXTERNAL_URL="http://autobuild.buildroot.net/toolchains/tarballs/br-openrisc-full-2017.05-1078-g95b1dae.tar.bz2"
+BR2_TOOLCHAIN_EXTERNAL_GCC_5=y
+BR2_TOOLCHAIN_EXTERNAL_HEADERS_4_12=y
+BR2_TOOLCHAIN_EXTERNAL_LOCALE=y
+# BR2_TOOLCHAIN_EXTERNAL_HAS_THREADS_DEBUG is not set
+# BR2_TOOLCHAIN_EXTERNAL_HAS_THREADS_NPTL is not set
+BR2_TOOLCHAIN_EXTERNAL_CXX=y
diff --git a/support/config-fragments/autobuild/br-powerpc-603e-basic-cpp.config b/support/config-fragments/autobuild/br-powerpc-603e-basic-cpp.config
new file mode 100644
index 0000000000..eaac058923
--- /dev/null
+++ b/support/config-fragments/autobuild/br-powerpc-603e-basic-cpp.config
@@ -0,0 +1,10 @@
+BR2_powerpc=y
+BR2_powerpc_603e=y
+BR2_TOOLCHAIN_EXTERNAL=y
+BR2_TOOLCHAIN_EXTERNAL_CUSTOM=y
+BR2_TOOLCHAIN_EXTERNAL_DOWNLOAD=y
+BR2_TOOLCHAIN_EXTERNAL_URL="http://autobuild.buildroot.org/toolchains/tarballs/br-powerpc-603e-basic-cpp-2017.05-1078-g95b1dae.tar.bz2"
+BR2_TOOLCHAIN_EXTERNAL_GCC_6=y
+BR2_TOOLCHAIN_EXTERNAL_HEADERS_4_12=y
+# BR2_TOOLCHAIN_EXTERNAL_HAS_THREADS_DEBUG is not set
+BR2_TOOLCHAIN_EXTERNAL_CXX=y
diff --git a/support/config-fragments/autobuild/br-powerpc-e500mc-full.config b/support/config-fragments/autobuild/br-powerpc-e500mc-full.config
new file mode 100644
index 0000000000..f4c073779e
--- /dev/null
+++ b/support/config-fragments/autobuild/br-powerpc-e500mc-full.config
@@ -0,0 +1,11 @@
+BR2_powerpc=y
+BR2_powerpc_e500mc=y
+BR2_TOOLCHAIN_EXTERNAL=y
+BR2_TOOLCHAIN_EXTERNAL_CUSTOM=y
+BR2_TOOLCHAIN_EXTERNAL_DOWNLOAD=y
+BR2_TOOLCHAIN_EXTERNAL_URL="http://autobuild.buildroot.org/toolchains/tarballs/br-powerpc-e500mc-full-2017.05-1078-g95b1dae.tar.bz2"
+BR2_TOOLCHAIN_EXTERNAL_GCC_6=y
+BR2_TOOLCHAIN_EXTERNAL_HEADERS_4_12=y
+BR2_TOOLCHAIN_EXTERNAL_LOCALE=y
+# BR2_TOOLCHAIN_EXTERNAL_HAS_THREADS_DEBUG is not set
+BR2_TOOLCHAIN_EXTERNAL_CXX=y
diff --git a/support/config-fragments/autobuild/br-powerpc-internal-full.config b/support/config-fragments/autobuild/br-powerpc-internal-full.config
new file mode 100644
index 0000000000..2621e9fb41
--- /dev/null
+++ b/support/config-fragments/autobuild/br-powerpc-internal-full.config
@@ -0,0 +1,5 @@
+BR2_powerpc=y
+BR2_TOOLCHAIN_BUILDROOT_INET_IPV6=y
+BR2_TOOLCHAIN_BUILDROOT_LOCALE=y
+BR2_TOOLCHAIN_BUILDROOT_WCHAR=y
+BR2_TOOLCHAIN_BUILDROOT_CXX=y
diff --git a/support/config-fragments/autobuild/br-powerpc64-power7-glibc.config b/support/config-fragments/autobuild/br-powerpc64-power7-glibc.config
new file mode 100644
index 0000000000..6e31cbb7c7
--- /dev/null
+++ b/support/config-fragments/autobuild/br-powerpc64-power7-glibc.config
@@ -0,0 +1,9 @@
+BR2_powerpc64=y
+BR2_powerpc_power7=y
+BR2_TOOLCHAIN_EXTERNAL=y
+BR2_TOOLCHAIN_EXTERNAL_DOWNLOAD=y
+BR2_TOOLCHAIN_EXTERNAL_URL="http://autobuild.buildroot.net/toolchains/tarballs/br-powerpc64-power7-glibc-2017.05-1078-g95b1dae.tar.bz2"
+BR2_TOOLCHAIN_EXTERNAL_GCC_6=y
+BR2_TOOLCHAIN_EXTERNAL_HEADERS_4_12=y
+BR2_TOOLCHAIN_EXTERNAL_CUSTOM_GLIBC=y
+BR2_TOOLCHAIN_EXTERNAL_CXX=y
diff --git a/support/config-fragments/autobuild/br-powerpc64le-power8-glibc.config b/support/config-fragments/autobuild/br-powerpc64le-power8-glibc.config
new file mode 100644
index 0000000000..80d5b3c133
--- /dev/null
+++ b/support/config-fragments/autobuild/br-powerpc64le-power8-glibc.config
@@ -0,0 +1,9 @@
+BR2_powerpc64le=y
+BR2_powerpc_power8=y
+BR2_TOOLCHAIN_EXTERNAL=y
+BR2_TOOLCHAIN_EXTERNAL_DOWNLOAD=y
+BR2_TOOLCHAIN_EXTERNAL_URL="http://autobuild.buildroot.net/toolchains/tarballs/br-powerpc64le-power8-glibc-2017.05-1078-g95b1dae.tar.bz2"
+BR2_TOOLCHAIN_EXTERNAL_GCC_6=y
+BR2_TOOLCHAIN_EXTERNAL_HEADERS_4_12=y
+BR2_TOOLCHAIN_EXTERNAL_CUSTOM_GLIBC=y
+BR2_TOOLCHAIN_EXTERNAL_CXX=y
diff --git a/support/config-fragments/autobuild/br-sh4-full.config b/support/config-fragments/autobuild/br-sh4-full.config
new file mode 100644
index 0000000000..b50e3528b6
--- /dev/null
+++ b/support/config-fragments/autobuild/br-sh4-full.config
@@ -0,0 +1,10 @@
+BR2_sh=y
+BR2_TOOLCHAIN_EXTERNAL=y
+BR2_TOOLCHAIN_EXTERNAL_CUSTOM=y
+BR2_TOOLCHAIN_EXTERNAL_DOWNLOAD=y
+BR2_TOOLCHAIN_EXTERNAL_URL="http://autobuild.buildroot.org/toolchains/tarballs/br-sh4-full-2017.05-1078-g95b1dae.tar.bz2"
+BR2_TOOLCHAIN_EXTERNAL_GCC_6=y
+BR2_TOOLCHAIN_EXTERNAL_HEADERS_4_12=y
+BR2_TOOLCHAIN_EXTERNAL_LOCALE=y
+# BR2_TOOLCHAIN_EXTERNAL_HAS_THREADS_DEBUG is not set
+BR2_TOOLCHAIN_EXTERNAL_CXX=y
diff --git a/support/config-fragments/autobuild/br-sparc-uclibc.config b/support/config-fragments/autobuild/br-sparc-uclibc.config
new file mode 100644
index 0000000000..e2a69bb56d
--- /dev/null
+++ b/support/config-fragments/autobuild/br-sparc-uclibc.config
@@ -0,0 +1,9 @@
+BR2_sparc=y
+BR2_TOOLCHAIN_EXTERNAL=y
+BR2_TOOLCHAIN_EXTERNAL_DOWNLOAD=y
+BR2_TOOLCHAIN_EXTERNAL_URL="http://autobuild.buildroot.org/toolchains/tarballs/br-sparc-uclibc-2017.05-1078-g95b1dae.tar.bz2"
+BR2_TOOLCHAIN_EXTERNAL_GCC_6=y
+BR2_TOOLCHAIN_EXTERNAL_HEADERS_4_1=y
+BR2_TOOLCHAIN_EXTERNAL_LOCALE=y
+# BR2_TOOLCHAIN_EXTERNAL_HAS_THREADS_DEBUG is not set
+BR2_TOOLCHAIN_EXTERNAL_CXX=y
diff --git a/support/config-fragments/autobuild/br-sparc64-glibc.config b/support/config-fragments/autobuild/br-sparc64-glibc.config
new file mode 100644
index 0000000000..c1d272141a
--- /dev/null
+++ b/support/config-fragments/autobuild/br-sparc64-glibc.config
@@ -0,0 +1,8 @@
+BR2_sparc64=y
+BR2_TOOLCHAIN_EXTERNAL=y
+BR2_TOOLCHAIN_EXTERNAL_DOWNLOAD=y
+BR2_TOOLCHAIN_EXTERNAL_URL="http://autobuild.buildroot.org/toolchains/tarballs/br-sparc64-full-2017.05-1078-g95b1dae.tar.bz2"
+BR2_TOOLCHAIN_EXTERNAL_GCC_6=y
+BR2_TOOLCHAIN_EXTERNAL_HEADERS_4_1=y
+BR2_TOOLCHAIN_EXTERNAL_CUSTOM_GLIBC=y
+BR2_TOOLCHAIN_EXTERNAL_CXX=y
diff --git a/support/config-fragments/autobuild/br-x86-64-core2-full.config b/support/config-fragments/autobuild/br-x86-64-core2-full.config
new file mode 100644
index 0000000000..56e2238731
--- /dev/null
+++ b/support/config-fragments/autobuild/br-x86-64-core2-full.config
@@ -0,0 +1,11 @@
+BR2_x86_64=y
+BR2_x86_core2=y
+BR2_TOOLCHAIN_EXTERNAL=y
+BR2_TOOLCHAIN_EXTERNAL_CUSTOM=y
+BR2_TOOLCHAIN_EXTERNAL_DOWNLOAD=y
+BR2_TOOLCHAIN_EXTERNAL_URL="http://autobuild.buildroot.org/toolchains/tarballs/br-x86-64-core2-full-2017.05-1078-g95b1dae.tar.bz2"
+BR2_TOOLCHAIN_EXTERNAL_GCC_6=y
+BR2_TOOLCHAIN_EXTERNAL_HEADERS_4_4=y
+BR2_TOOLCHAIN_EXTERNAL_LOCALE=y
+# BR2_TOOLCHAIN_EXTERNAL_HAS_THREADS_DEBUG is not set
+BR2_TOOLCHAIN_EXTERNAL_CXX=y
diff --git a/support/config-fragments/autobuild/br-x86-64-musl.config b/support/config-fragments/autobuild/br-x86-64-musl.config
new file mode 100644
index 0000000000..48f84cc79a
--- /dev/null
+++ b/support/config-fragments/autobuild/br-x86-64-musl.config
@@ -0,0 +1,10 @@
+BR2_x86_64=y
+BR2_x86_atom=y
+BR2_TOOLCHAIN_EXTERNAL=y
+BR2_TOOLCHAIN_EXTERNAL_CUSTOM=y
+BR2_TOOLCHAIN_EXTERNAL_DOWNLOAD=y
+BR2_TOOLCHAIN_EXTERNAL_URL="http://autobuild.buildroot.org/toolchains/tarballs/br-x86-64-musl-2017.05-1078-g95b1dae.tar.bz2"
+BR2_TOOLCHAIN_EXTERNAL_GCC_6=y
+BR2_TOOLCHAIN_EXTERNAL_HEADERS_4_12=y
+BR2_TOOLCHAIN_EXTERNAL_CUSTOM_MUSL=y
+BR2_TOOLCHAIN_EXTERNAL_CXX=y
diff --git a/support/config-fragments/autobuild/br-xtensa-full-internal.config b/support/config-fragments/autobuild/br-xtensa-full-internal.config
new file mode 100644
index 0000000000..f642a4d76b
--- /dev/null
+++ b/support/config-fragments/autobuild/br-xtensa-full-internal.config
@@ -0,0 +1,4 @@
+BR2_xtensa=y
+BR2_JLEVEL=8
+BR2_TOOLCHAIN_BUILDROOT_LOCALE=y
+BR2_TOOLCHAIN_BUILDROOT_CXX=y
diff --git a/support/config-fragments/autobuild/br-xtensa-full.config b/support/config-fragments/autobuild/br-xtensa-full.config
new file mode 100644
index 0000000000..c98b3057cf
--- /dev/null
+++ b/support/config-fragments/autobuild/br-xtensa-full.config
@@ -0,0 +1,9 @@
+BR2_xtensa=y
+BR2_TOOLCHAIN_EXTERNAL=y
+BR2_TOOLCHAIN_EXTERNAL_DOWNLOAD=y
+BR2_TOOLCHAIN_EXTERNAL_URL="http://autobuild.buildroot.org/toolchains/tarballs/br-xtensa-full-2017.05-1078-g95b1dae.tar.bz2"
+BR2_TOOLCHAIN_EXTERNAL_GCC_6=y
+BR2_TOOLCHAIN_EXTERNAL_HEADERS_4_12=y
+BR2_TOOLCHAIN_EXTERNAL_LOCALE=y
+# BR2_TOOLCHAIN_EXTERNAL_HAS_THREADS_DEBUG is not set
+BR2_TOOLCHAIN_EXTERNAL_CXX=y
diff --git a/support/config-fragments/autobuild/i686-ctng-linux-gnu.config b/support/config-fragments/autobuild/i686-ctng-linux-gnu.config
new file mode 100644
index 0000000000..9a961123c3
--- /dev/null
+++ b/support/config-fragments/autobuild/i686-ctng-linux-gnu.config
@@ -0,0 +1,10 @@
+BR2_x86_i686=y
+BR2_TOOLCHAIN_EXTERNAL=y
+BR2_TOOLCHAIN_EXTERNAL_CUSTOM=y
+BR2_TOOLCHAIN_EXTERNAL_DOWNLOAD=y
+BR2_TOOLCHAIN_EXTERNAL_URL="http://autobuild.buildroot.org/toolchains/tarballs/i686-ctng-linux-gnu.tar.xz"
+BR2_TOOLCHAIN_EXTERNAL_CUSTOM_PREFIX="i686-ctng-linux-gnu"
+BR2_TOOLCHAIN_EXTERNAL_GCC_4_8=y
+BR2_TOOLCHAIN_EXTERNAL_HEADERS_3_9=y
+BR2_TOOLCHAIN_EXTERNAL_CUSTOM_GLIBC=y
+BR2_TOOLCHAIN_EXTERNAL_CXX=y
diff --git a/support/config-fragments/autobuild/linaro-aarch64.config b/support/config-fragments/autobuild/linaro-aarch64.config
new file mode 100644
index 0000000000..f65f78a39b
--- /dev/null
+++ b/support/config-fragments/autobuild/linaro-aarch64.config
@@ -0,0 +1,3 @@
+BR2_aarch64=y
+BR2_TOOLCHAIN_EXTERNAL=y
+BR2_TOOLCHAIN_EXTERNAL_LINARO_AARCH64=y
diff --git a/support/config-fragments/autobuild/linaro-arm.config b/support/config-fragments/autobuild/linaro-arm.config
new file mode 100644
index 0000000000..d72e19b3ad
--- /dev/null
+++ b/support/config-fragments/autobuild/linaro-arm.config
@@ -0,0 +1,5 @@
+BR2_arm=y
+BR2_cortex_a8=y
+BR2_ARM_EABIHF=y
+BR2_TOOLCHAIN_EXTERNAL=y
+BR2_TOOLCHAIN_EXTERNAL_LINARO_ARM=y
diff --git a/support/config-fragments/autobuild/mips64el-ctng_n32-linux-gnu.config b/support/config-fragments/autobuild/mips64el-ctng_n32-linux-gnu.config
new file mode 100644
index 0000000000..cf33ea26f3
--- /dev/null
+++ b/support/config-fragments/autobuild/mips64el-ctng_n32-linux-gnu.config
@@ -0,0 +1,9 @@
+BR2_mips64el=y
+BR2_TOOLCHAIN_EXTERNAL=y
+BR2_TOOLCHAIN_EXTERNAL_DOWNLOAD=y
+BR2_TOOLCHAIN_EXTERNAL_URL="http://autobuild.buildroot.org/toolchains/tarballs/mips64el-ctng_n32-linux-gnu.tar.xz"
+BR2_TOOLCHAIN_EXTERNAL_CUSTOM_PREFIX="mips64el-ctng_n32-linux-gnu"
+BR2_TOOLCHAIN_EXTERNAL_GCC_4_8=y
+BR2_TOOLCHAIN_EXTERNAL_HEADERS_3_9=y
+BR2_TOOLCHAIN_EXTERNAL_CUSTOM_GLIBC=y
+BR2_TOOLCHAIN_EXTERNAL_CXX=y
diff --git a/support/config-fragments/autobuild/mips64el-ctng_n64-linux-gnu.config b/support/config-fragments/autobuild/mips64el-ctng_n64-linux-gnu.config
new file mode 100644
index 0000000000..942a1b13b5
--- /dev/null
+++ b/support/config-fragments/autobuild/mips64el-ctng_n64-linux-gnu.config
@@ -0,0 +1,11 @@
+BR2_mips64el=y
+BR2_MIPS_NABI64=y
+BR2_TOOLCHAIN_EXTERNAL=y
+BR2_TOOLCHAIN_EXTERNAL_CUSTOM=y
+BR2_TOOLCHAIN_EXTERNAL_DOWNLOAD=y
+BR2_TOOLCHAIN_EXTERNAL_URL="http://autobuild.buildroot.org/toolchains/tarballs/mips64el-ctng_n64-linux-gnu.tar.xz"
+BR2_TOOLCHAIN_EXTERNAL_CUSTOM_PREFIX="mips64el-ctng_n64-linux-gnu"
+BR2_TOOLCHAIN_EXTERNAL_GCC_4_8=y
+BR2_TOOLCHAIN_EXTERNAL_HEADERS_3_9=y
+BR2_TOOLCHAIN_EXTERNAL_CUSTOM_GLIBC=y
+BR2_TOOLCHAIN_EXTERNAL_CXX=y
diff --git a/support/config-fragments/autobuild/powerpc-ctng_e500v2-linux-gnuspe.config b/support/config-fragments/autobuild/powerpc-ctng_e500v2-linux-gnuspe.config
new file mode 100644
index 0000000000..e82d3fbda7
--- /dev/null
+++ b/support/config-fragments/autobuild/powerpc-ctng_e500v2-linux-gnuspe.config
@@ -0,0 +1,11 @@
+BR2_powerpc=y
+BR2_powerpc_8548=y
+BR2_TOOLCHAIN_EXTERNAL=y
+BR2_TOOLCHAIN_EXTERNAL_CUSTOM=y
+BR2_TOOLCHAIN_EXTERNAL_DOWNLOAD=y
+BR2_TOOLCHAIN_EXTERNAL_URL="http://autobuild.buildroot.org/toolchains/tarballs/powerpc-ctng_e500v2-linux-gnuspe.tar.xz"
+BR2_TOOLCHAIN_EXTERNAL_CUSTOM_PREFIX="powerpc-ctng_e500v2-linux-gnuspe"
+BR2_TOOLCHAIN_EXTERNAL_GCC_4_7=y
+BR2_TOOLCHAIN_EXTERNAL_HEADERS_3_12=y
+BR2_TOOLCHAIN_EXTERNAL_CUSTOM_GLIBC=y
+BR2_TOOLCHAIN_EXTERNAL_CXX=y
diff --git a/support/config-fragments/autobuild/sourcery-arm-armv4t.config b/support/config-fragments/autobuild/sourcery-arm-armv4t.config
new file mode 100644
index 0000000000..4c0e01fecb
--- /dev/null
+++ b/support/config-fragments/autobuild/sourcery-arm-armv4t.config
@@ -0,0 +1,4 @@
+BR2_arm=y
+BR2_arm920t=y
+BR2_TOOLCHAIN_EXTERNAL=y
+BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_ARM=y
diff --git a/support/config-fragments/autobuild/sourcery-arm-thumb2.config b/support/config-fragments/autobuild/sourcery-arm-thumb2.config
new file mode 100644
index 0000000000..e726757a16
--- /dev/null
+++ b/support/config-fragments/autobuild/sourcery-arm-thumb2.config
@@ -0,0 +1,7 @@
+BR2_arm=y
+BR2_cortex_a8=y
+BR2_ARM_EABI=y
+BR2_ARM_INSTRUCTIONS_THUMB2=y
+BR2_TOOLCHAIN_EXTERNAL=y
+BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_ARM=y
+BR2_TARGET_OPTIMIZATION=""
diff --git a/support/config-fragments/autobuild/sourcery-arm.config b/support/config-fragments/autobuild/sourcery-arm.config
new file mode 100644
index 0000000000..8ade4647f2
--- /dev/null
+++ b/support/config-fragments/autobuild/sourcery-arm.config
@@ -0,0 +1,3 @@
+BR2_arm=y
+BR2_TOOLCHAIN_EXTERNAL=y
+BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_ARM=y
diff --git a/support/config-fragments/autobuild/sourcery-mips.config b/support/config-fragments/autobuild/sourcery-mips.config
new file mode 100644
index 0000000000..103e20bfc2
--- /dev/null
+++ b/support/config-fragments/autobuild/sourcery-mips.config
@@ -0,0 +1,4 @@
+BR2_mips=y
+BR2_mips_32r2=y
+BR2_TOOLCHAIN_EXTERNAL=y
+BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_MIPS=y
diff --git a/support/config-fragments/autobuild/sourcery-mips64.config b/support/config-fragments/autobuild/sourcery-mips64.config
new file mode 100644
index 0000000000..77e3a853e1
--- /dev/null
+++ b/support/config-fragments/autobuild/sourcery-mips64.config
@@ -0,0 +1,5 @@
+BR2_mips64el=y
+BR2_mips_64r2=y
+BR2_MIPS_NABI64=y
+BR2_TOOLCHAIN_EXTERNAL=y
+BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_MIPS=y
diff --git a/support/config-fragments/autobuild/sourcery-nios2.config b/support/config-fragments/autobuild/sourcery-nios2.config
new file mode 100644
index 0000000000..d58407d513
--- /dev/null
+++ b/support/config-fragments/autobuild/sourcery-nios2.config
@@ -0,0 +1,3 @@
+BR2_nios2=y
+BR2_TOOLCHAIN_EXTERNAL=y
+BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_NIOSII=y
diff --git a/support/config-fragments/autobuild/sourcery-x86-64.config b/support/config-fragments/autobuild/sourcery-x86-64.config
new file mode 100644
index 0000000000..6c7ad4c5b7
--- /dev/null
+++ b/support/config-fragments/autobuild/sourcery-x86-64.config
@@ -0,0 +1,4 @@
+BR2_x86_64=y
+BR2_x86_steamroller=y
+BR2_TOOLCHAIN_EXTERNAL=y
+BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_AMD64=y
diff --git a/support/config-fragments/autobuild/toolchain-configs.csv b/support/config-fragments/autobuild/toolchain-configs.csv
new file mode 100644
index 0000000000..15f6546cef
--- /dev/null
+++ b/support/config-fragments/autobuild/toolchain-configs.csv
@@ -0,0 +1,52 @@
+support/config-fragments/autobuild/armv5-ctng-linux-gnueabi.config,x86,glibc
+support/config-fragments/autobuild/armv7-ctng-linux-gnueabihf.config,x86,glibc
+support/config-fragments/autobuild/br-aarch64-glibc.config,x86_64,glibc
+support/config-fragments/autobuild/br-arc-full-internal.config,any,uclibc
+support/config-fragments/autobuild/br-arcle-hs38.config,x86_64,uclibc
+support/config-fragments/autobuild/br-arm-basic.config,x86_64,uclibc
+support/config-fragments/autobuild/br-arm-cortex-a9-glibc.config,x86_64,glibc
+support/config-fragments/autobuild/br-arm-cortex-a9-musl.config,x86_64,musl
+support/config-fragments/autobuild/br-arm-cortex-m4-full.config,x86_64,uclibc
+support/config-fragments/autobuild/br-arm-full.config,x86_64,uclibc
+support/config-fragments/autobuild/br-arm-full-nothread.config,x86_64,uclibc
+support/config-fragments/autobuild/br-arm-full-static.config,x86_64,uclibc
+support/config-fragments/autobuild/br-arm-internal-full.config,any,uclibc
+support/config-fragments/autobuild/br-bfin-full.config,x86_64,uclibc
+support/config-fragments/autobuild/br-i386-pentium4-full.config,x86_64,uclibc
+support/config-fragments/autobuild/br-i386-pentium-mmx-musl.config,x86_64,musl
+support/config-fragments/autobuild/br-m68k-5208-full.config,x86_64,uclibc
+support/config-fragments/autobuild/br-m68k-68040-full.config,x86_64,uclibc
+support/config-fragments/autobuild/br-microblazeel-full.config,x86_64,uclibc
+support/config-fragments/autobuild/br-microblazeel-full-internal.config,any,glibc
+support/config-fragments/autobuild/br-mips64-n64-full.config,x86_64,uclibc
+support/config-fragments/autobuild/br-mips32r6-el-hf-glibc.config,x86_64,glibc
+support/config-fragments/autobuild/br-mips64r6-el-hf-glibc.config,x86_64,glibc
+support/config-fragments/autobuild/br-mipsel-o32-full.config,x86_64,uclibc
+support/config-fragments/autobuild/br-nios2-glibc.config,x86_64,glibc
+support/config-fragments/autobuild/br-openrisc-uclibc.config,x86_64,uclibc
+support/config-fragments/autobuild/br-powerpc-603e-basic-cpp.config,x86_64,uclibc
+support/config-fragments/autobuild/br-powerpc64le-power8-glibc.config,x86_64,glibc
+support/config-fragments/autobuild/br-powerpc64-power7-glibc.config,x86_64,glibc
+support/config-fragments/autobuild/br-powerpc-e500mc-full.config,x86_64,uclibc
+support/config-fragments/autobuild/br-powerpc-internal-full.config,any,uclibc
+support/config-fragments/autobuild/br-sh4-full.config,x86_64,uclibc
+support/config-fragments/autobuild/br-sparc-uclibc.config,x86_64,uclibc
+support/config-fragments/autobuild/br-sparc64-glibc.config,x86_64,glibc
+support/config-fragments/autobuild/br-x86-64-core2-full.config,x86_64,uclibc
+support/config-fragments/autobuild/br-x86-64-musl.config,x86_64,musl
+support/config-fragments/autobuild/br-xtensa-full.config,x86_64,uclibc
+support/config-fragments/autobuild/br-xtensa-full-internal.config,any,uclibc
+support/config-fragments/autobuild/i686-ctng-linux-gnu.config,x86,glibc
+support/config-fragments/autobuild/linaro-aarch64.config,x86,glibc
+support/config-fragments/autobuild/linaro-arm.config,x86,glibc
+support/config-fragments/autobuild/mips64el-ctng_n32-linux-gnu.config,x86,glibc
+support/config-fragments/autobuild/mips64el-ctng_n64-linux-gnu.config,x86,glibc
+support/config-fragments/autobuild/powerpc-ctng_e500v2-linux-gnuspe.config,x86,glibc
+support/config-fragments/autobuild/sourcery-arm-armv4t.config,x86,glibc
+support/config-fragments/autobuild/sourcery-arm.config,x86,glibc
+support/config-fragments/autobuild/sourcery-arm-thumb2.config,x86,glibc
+support/config-fragments/autobuild/sourcery-mips64.config,x86,glibc
+support/config-fragments/autobuild/sourcery-mips.config,x86,glibc
+support/config-fragments/autobuild/sourcery-nios2.config,x86,glibc
+support/config-fragments/autobuild/sourcery-x86-64.config,x86,glibc
+support/config-fragments/autobuild/x86_64-ctng_locales-linux-gnu.config,x86,glibc
diff --git a/support/config-fragments/autobuild/x86_64-ctng_locales-linux-gnu.config b/support/config-fragments/autobuild/x86_64-ctng_locales-linux-gnu.config
new file mode 100644
index 0000000000..435034be27
--- /dev/null
+++ b/support/config-fragments/autobuild/x86_64-ctng_locales-linux-gnu.config
@@ -0,0 +1,11 @@
+BR2_x86_64=y
+BR2_x86_corei7=y
+BR2_TOOLCHAIN_EXTERNAL=y
+BR2_TOOLCHAIN_EXTERNAL_CUSTOM=y
+BR2_TOOLCHAIN_EXTERNAL_DOWNLOAD=y
+BR2_TOOLCHAIN_EXTERNAL_URL="http://autobuild.buildroot.org/toolchains/tarballs/x86_64-ctng_locales-linux-gnu.tar.xz"
+BR2_TOOLCHAIN_EXTERNAL_CUSTOM_PREFIX="x86_64-ctng_locales-linux-gnu"
+BR2_TOOLCHAIN_EXTERNAL_GCC_4_8=y
+BR2_TOOLCHAIN_EXTERNAL_HEADERS_3_9=y
+BR2_TOOLCHAIN_EXTERNAL_CUSTOM_GLIBC=y
+BR2_TOOLCHAIN_EXTERNAL_CXX=y