diff -Naur VirtualBox-5.1.22-orig/configure VirtualBox-5.1.22/configure
--- VirtualBox-5.1.22-orig/configure	2017-05-06 14:55:57.064007080 +0200
+++ VirtualBox-5.1.22/configure	2017-05-06 14:56:49.898007247 +0200
@@ -440,18 +440,6 @@
         fail really
       elif [ $cc_maj -eq 4 -a $cc_min -eq 0 -a "$OS" = "darwin" ]; then
         log_success "found version $cc_ver"
-      # gcc-4.0 is allowed for Darwin only
-      elif [ $cc_maj -lt 4 \
-             -o \( $cc_maj -eq 4 -a $cc_min -lt 4 -a "$OS" != "darwin" \) \
-             -o \( $cc_maj -eq 4 -a $cc_min -lt 2 -a "$OS"  = "darwin" \) \
-             -o \( $cc_maj -eq 4 -a $cc_min -gt 9 \) \
-             -o \( $cc_maj -eq 5 -a $cc_min -gt 9 \) \
-             -o \( $cc_maj -eq 6 -a $cc_min -gt 9 \) \
-             -o $cc_maj -gt 6 ]; then
-        log_failure "gcc version $cc_maj.$cc_min found, expected gcc 4.x, gcc 5.x or gcc 6.x"
-        fail really
-      else
-        log_success "found version $cc_ver"
       fi
       if [ "$BUILD_MACHINE" = "amd64" ]; then
         [ -z "$CC32"  ] && CC32="$CC -m32"