--- nspr-4.35/nspr/configure.orig
+++ nspr-4.35/nspr/configure
@@ -7288,8 +7288,8 @@
             CXX="$CXX -m64"
         else
             if test "$OS_TEST" = "i86pc"; then
-                CC="$CC -xarch=amd64"
-                CXX="$CXX -xarch=amd64"
+                CC="$CC -m64"
+                CXX="$CXX -m64"
             else
                 CC="$CC -xarch=v9"
                 CXX="$CXX -xarch=v9"
--- nspr-4.35/nspr/configure.in.orig
+++ nspr-4.35/nspr/configure.in
@@ -2110,8 +2110,8 @@
             CXX="$CXX -m64"
         else
             if test "$OS_TEST" = "i86pc"; then
-                CC="$CC -xarch=amd64"
-                CXX="$CXX -xarch=amd64"
+                CC="$CC -m64"
+                CXX="$CXX -m64"
             else
                 CC="$CC -xarch=v9"
                 CXX="$CXX -xarch=v9"