diff --git a/meta-citadel/conf/distro/include/tcmode-default.inc b/meta-citadel/conf/distro/include/tcmode-default.inc
new file mode 100644
index 0000000..8e15f69
--- /dev/null
+++ b/meta-citadel/conf/distro/include/tcmode-default.inc
@@ -0,0 +1,81 @@
+#
+# Default toolchain configuration
+#
+
+PREFERRED_PROVIDER_virtual/${TARGET_PREFIX}binutils = "binutils-cross-${TARGET_ARCH}"
+PREFERRED_PROVIDER_virtual/${TARGET_PREFIX}gcc-initial = "gcc-cross-initial-${TARGET_ARCH}"
+PREFERRED_PROVIDER_virtual/${TARGET_PREFIX}gcc = "gcc-cross-${TARGET_ARCH}"
+PREFERRED_PROVIDER_virtual/${TARGET_PREFIX}g++ = "gcc-cross-${TARGET_ARCH}"
+PREFERRED_PROVIDER_virtual/${TARGET_PREFIX}compilerlibs = "gcc-runtime"
+PREFERRED_PROVIDER_gdb = "gdb"
+
+PREFERRED_PROVIDER_virtual/${SDK_PREFIX}binutils-crosssdk ?= "binutils-crosssdk-${SDK_SYS}"
+PREFERRED_PROVIDER_virtual/${SDK_PREFIX}gcc-initial = "gcc-crosssdk-initial-${SDK_SYS}"
+PREFERRED_PROVIDER_virtual/${SDK_PREFIX}gcc = "gcc-crosssdk-${SDK_SYS}"
+PREFERRED_PROVIDER_virtual/${SDK_PREFIX}g++ = "gcc-crosssdk-${SDK_SYS}"
+PREFERRED_PROVIDER_virtual/${SDK_PREFIX}compilerlibs = "nativesdk-gcc-runtime"
+
+# Default libc config
+PREFERRED_PROVIDER_virtual/${TARGET_PREFIX}libc-for-gcc = "${TCLIBC}"
+PREFERRED_PROVIDER_virtual/nativesdk-${SDK_PREFIX}libc-for-gcc ?= "nativesdk-glibc"
+PREFERRED_PROVIDER_virtual/${TARGET_PREFIX}libc-initial = "${TCLIBC}-initial"
+PREFERRED_PROVIDER_virtual/nativesdk-${SDK_PREFIX}libc-initial ?= "nativesdk-glibc-initial"
+PREFERRED_PROVIDER_virtual/gettext ??= "gettext"
+
+GCCVERSION ?= "7.%"
+SDKGCCVERSION ?= "${GCCVERSION}"
+BINUVERSION ?= "2.30%"
+GDBVERSION ?= "8.1%"
+GLIBCVERSION ?= "2.27%"
+LINUXLIBCVERSION ?= "4.15%"
+QEMUVERSION ?= "2.12%"
+
+PREFERRED_VERSION_gcc ?= "${GCCVERSION}"
+PREFERRED_VERSION_gcc-cross-${TARGET_ARCH} ?= "${GCCVERSION}"
+PREFERRED_VERSION_gcc-cross-initial-${TARGET_ARCH} ?= "${GCCVERSION}"
+PREFERRED_VERSION_gcc-crosssdk-${SDK_SYS} ?= "${SDKGCCVERSION}"
+PREFERRED_VERSION_gcc-crosssdk-initial-${SDK_SYS} ?= "${SDKGCCVERSION}"
+PREFERRED_VERSION_gcc-cross-canadian-${TRANSLATED_TARGET_ARCH} ?= "${GCCVERSION}"
+PREFERRED_VERSION_gcc-runtime ?= "${GCCVERSION}"
+PREFERRED_VERSION_gcc-sanitizers ?= "${GCCVERSION}"
+PREFERRED_VERSION_nativesdk-gcc-runtime ?= "${SDKGCCVERSION}"
+PREFERRED_VERSION_nativesdk-gcc-sanitizers ?= "${SDKGCCVERSION}"
+PREFERRED_VERSION_libgcc ?= "${GCCVERSION}"
+PREFERRED_VERSION_libgcc-initial ?= "${GCCVERSION}"
+PREFERRED_VERSION_nativesdk-gcc ?= "${SDKGCCVERSION}"
+PREFERRED_VERSION_nativesdk-libgcc ?= "${SDKGCCVERSION}"
+PREFERRED_VERSION_nativesdk-libgcc-initial ?= "${SDKGCCVERSION}"
+PREFERRED_VERSION_binutils ?= "${BINUVERSION}"
+PREFERRED_VERSION_binutils-native ?= "${BINUVERSION}"
+PREFERRED_VERSION_binutils-cross-${TARGET_ARCH} ?= "${BINUVERSION}"
+PREFERRED_VERSION_binutils-crosssdk-${SDK_SYS} ?= "${BINUVERSION}"
+PREFERRED_VERSION_binutils-cross-canadian-${TRANSLATED_TARGET_ARCH} ?= "${BINUVERSION}"
+PREFERRED_VERSION_gdb ?= "${GDBVERSION}"
+PREFERRED_VERSION_gdb-cross-${TARGET_ARCH} ?= "${GDBVERSION}"
+PREFERRED_VERSION_gdb-cross-canadian-${TRANSLATED_TARGET_ARCH} ?= "${GDBVERSION}"
+
+PREFERRED_VERSION_linux-libc-headers ?= "${LINUXLIBCVERSION}"
+PREFERRED_VERSION_nativesdk-linux-libc-headers ?= "${LINUXLIBCVERSION}"
+PREFERRED_VERSION_glibc                    ?= "${GLIBCVERSION}"
+PREFERRED_VERSION_glibc-locale             ?= "${GLIBCVERSION}"
+PREFERRED_VERSION_glibc-mtrace             ?= "${GLIBCVERSION}"
+PREFERRED_VERSION_glibc-scripts            ?= "${GLIBCVERSION}"
+PREFERRED_VERSION_nativesdk-glibc          ?= "${GLIBCVERSION}"
+PREFERRED_VERSION_glibc-initial            ?= "${GLIBCVERSION}"
+PREFERRED_VERSION_nativesdk-glibc-initial  ?= "${GLIBCVERSION}"
+PREFERRED_VERSION_cross-localedef-native   ?= "${GLIBCVERSION}"
+
+PREFERRED_VERSION_qemu ?= "${QEMUVERSION}"
+PREFERRED_VERSION_qemu-native ?= "${QEMUVERSION}"
+PREFERRED_VERSION_nativesdk-qemu ?= "${QEMUVERSION}"
+
+GOVERSION ?= "1.9%"
+PREFERRED_VERSION_virtual/${TARGET_PREFIX}go ?= "${GOVERSION}"
+PREFERRED_VERSION_go-cross-${TARGET_ARCH} ?= "${GOVERSION}"
+PREFERRED_VERSION_go-crosssdk-${SDK_ARCH} ?= "${GOVERSION}"
+PREFERRED_VERSION_go-cross-canadian-${TRANSLATED_TARGET_ARCH} ?= "${GOVERSION}"
+PREFERRED_VERSION_go ?= "${GOVERSION}"
+PREFERRED_VERSION_go-native ?= "${GOVERSION}"
+PREFERRED_VERSION_go-runtime ?= "${GOVERSION}"
+PREFERRED_VERSION_nativesdk-go ?= "${GOVERSION}"
+PREFERRED_VERSION_nativesdk-go-runtime ?= "${GOVERSION}"