3 files changed, 36 insertions, 25 deletions
diff --git a/config/backend.in b/config/backend.in
new file mode 100644
index 00000000..9151858c
--- /dev/null
+++ b/config/backend.in
@@ -0,0 +1,33 @@
+# Options specific to crosstool-NG acting as a backend
+
+config IS_A_BACKEND
+    string
+    option env="CT_IS_A_BACKEND"
+
+config BACKEND
+    bool
+    default y if IS_A_BACKEND =  "y" || IS_A_BACKEND =  "Y"
+    default n if IS_A_BACKEND != "y" && IS_A_BACKEND != "Y"
+
+config BACKEND_ERROR
+    bool
+
+config BACKEND_ARCH
+    string
+    option env="CT_BACKEND_ARCH"
+
+if BACKEND && BACKEND_ARCH = ""
+comment "ERROR !!! Backend architecture is NOT set !"
+config BACKEND_ERROR
+    default y
+endif
+
+config BACKEND_KERNEL
+    string
+    option env="CT_BACKEND_KERNEL"
+
+if BACKEND && BACKEND_KERNEL = ""
+comment "ERROR !!! Backend kernel is NOT set !"
+config BACKEND_ERROR
+    default y
+endif
diff --git a/config/config.in b/config/config.in
index d7f3bc78..a013f94f 100644
--- a/config/config.in
+++ b/config/config.in
@@ -1,3 +1,5 @@
+source config/backend.in
+if ! BACKEND_ERROR
 source config/global.in
 source config/target.in
 source config/toolchain.in
@@ -8,3 +10,4 @@ source config/libc.in
 source config/debug.in
 source config/companion_libs.in
 source config/companion_tools.in
+endif # ! BACKEND_ERROR
diff --git a/config/global/ct-behave.in b/config/global/ct-behave.in
index 45da2b8d..4c763c38 100644
--- a/config/global/ct-behave.in
+++ b/config/global/ct-behave.in
@@ -2,31 +2,6 @@
 
 comment "crosstool-NG behavior"
 
-config IS_A_BACKEND
-    string
-    option env="CT_IS_A_BACKEND"
-
-config BACKEND
-    bool
-    default y if IS_A_BACKEND =  "y" || IS_A_BACKEND =  "Y"
-    default n if IS_A_BACKEND != "y" && IS_A_BACKEND != "Y"
-
-config BACKEND_ARCH
-    string
-    option env="CT_BACKEND_ARCH"
-
-if BACKEND && BACKEND_ARCH = ""
-comment "ERROR !!! Backend architecture is NOT set !"
-endif
-
-config BACKEND_KERNEL
-    string
-    option env="CT_BACKEND_KERNEL"
-
-if BACKEND && BACKEND_KERNEL = ""
-comment "ERROR !!! Backend kernel is NOT set !"
-endif
-
 config OBSOLETE
     bool
     prompt "Use obsolete features"