From 67b314a05156f9af221b807d543030ef9f0dc842 Mon Sep 17 00:00:00 2001
From: Alexey Neyman <stilor@att.net>
Date: Sat, 21 May 2016 13:19:42 -0700
Subject: arch/x86: add a sanity check

i[34567]86-*-gnux32 is not a valid tuple.

Signed-off-by: Bryan Hundven <bryanhundven@gmail.com>
Signed-off-by: Ray Donnelly <ray.donnelly@gmail.com>
Signed-off-by: Alexey Neyman <stilor@att.net>

diff --git a/scripts/build/arch/x86.sh b/scripts/build/arch/x86.sh
index fd7852e..ca0f08b 100644
--- a/scripts/build/arch/x86.sh
+++ b/scripts/build/arch/x86.sh
@@ -20,6 +20,17 @@ CT_DoArchTupleValues() {
         esac
     fi
     CT_TARGET_ARCH="${CT_TARGET_ARCH}${CT_ARCH_SUFFIX}"
+
+    # Shouldn't be possible to specify this (CT_TARGET_SYS is not specified by the user,
+    # it is computed by scripts/functions from libc choices). But trap if such invalid
+    # values ever come from the caller:
+    case "${CT_TARGET_ARCH}-${CT_TARGET_SYS}" in
+        i[34567]86-gnux32)
+            CT_DoLog ERROR "Invalid CT_TARGET: i[34567]86-<vendor>-<os>-gnux32 is invalid."
+            CT_DoLog ERROR "CT_TARGET: ${CT_TARGET}"
+            CT_Abort "Go read: https://wiki.debian.org/Multiarch/Tuples"
+            ;;
+    esac
 }
 
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