- revert some bad checkins, fixup bad settings in atmel targets and move the gcc target abi back to a place where the other arch-specific settings live
diff --git a/toolchain/Config.in b/toolchain/Config.in
index 10a1be9..21f7f0d 100644
--- a/toolchain/Config.in
+++ b/toolchain/Config.in
@@ -1,18 +1,31 @@
 menu "Toolchain"
 choice
 	prompt "Toolchain type"
-	default BR2_TOOLCHAIN_BUILDROOT
+	default BR2_TOOLCHAIN_BUILDROOT if !BR2_avr32
+	default BR2_TOOLCHAIN_EXTERNAL_SOURCE if BR2_avr32
 	help
-	  Select whether to use the toolchain built by the buildroot
-	  system or an external pre-built toolchain.
+	  Select whether to use the toolchain provided by buildroot
+	  or an external toolchain.
+
+	  Some vendors provide toolchains in binary form, some in
+	  source form.
 
 config BR2_TOOLCHAIN_BUILDROOT
 	bool "Buildroot toolchain"
+	depends on !BR2_avr32
 
 config BR2_TOOLCHAIN_EXTERNAL
-	bool "External toolchain"
+	bool "External binary toolchain"
+
+config BR2_TOOLCHAIN_EXTERNAL_SOURCE
+	bool "External source toolchain"
 endchoice
 
+config BR2_TOOLCHAIN_SOURCE
+	bool
+	default y if BR2_TOOLCHAIN_BUILDROOT || BR2_TOOLCHAIN_EXTERNAL_SOURCE
+	default n if BR2_TOOLCHAIN_EXTERNAL
+
 source "target/device/Toolchain.in"
 
 source "toolchain/Config.in.2"