diff --git a/vbox_fix_for_gcc7.patch b/vbox_fix_for_gcc7.patch
new file mode 100644
index 0000000..e4cd3ae
--- /dev/null
+++ b/vbox_fix_for_gcc7.patch
@@ -0,0 +1,27 @@
+Index: VirtualBox-5.1.22/configure
+===================================================================
+--- VirtualBox-5.1.22.orig/configure
++++ VirtualBox-5.1.22/configure
+@@ -447,8 +447,8 @@ check_gcc()
+              -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"
++             -o $cc_maj -gt 7 ]; then
++        log_failure "gcc version $cc_maj.$cc_min found, expected gcc 4.x, gcc 5.x, gcc 6.x or gcc7.x"
+         fail really
+       else
+         log_success "found version $cc_ver"
+Index: VirtualBox-5.1.22/src/VBox/Devices/PC/ipxe/src/arch/i386/interface/pxe/pxe_preboot.c
+===================================================================
+--- VirtualBox-5.1.22.orig/src/VBox/Devices/PC/ipxe/src/arch/i386/interface/pxe/pxe_preboot.c
++++ VirtualBox-5.1.22/src/VBox/Devices/PC/ipxe/src/arch/i386/interface/pxe/pxe_preboot.c
+@@ -262,6 +262,7 @@ pxenv_restart_tftp ( struct s_PXENV_TFTP
+ 
+ 	/* Restart NBP */
+ 	rmlongjmp ( pxe_restart_nbp, PXENV_RESTART_TFTP );
++	return 0;
+ }
+ 
+ /* PXENV_START_UNDI
diff --git a/virtualbox.changes b/virtualbox.changes
index 05448b5..4eae8ea 100644
--- a/virtualbox.changes
+++ b/virtualbox.changes
@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Wed May 17 20:33:08 UTC 2017 - Larry.Finger@lwfinger.net
+
+- Made changes to build with gcc 7.x. This adds new file "vbox_fix_for_gcc7.patch".
+  Changed the building of VBoxVNC to remove the hack used earlier.
+
 -------------------------------------------------------------------
 Wed May 10 17:39:57 UTC 2017 - Larry.Finger@lwfinger.net
 
diff --git a/virtualbox.spec b/virtualbox.spec
index 255c4aa..8b4a0dc 100644
--- a/virtualbox.spec
+++ b/virtualbox.spec
@@ -96,6 +96,8 @@ Patch112:       modify_for_4_8_bo_move.patch
 Patch113:       vbox_remove_smp_mflags.patch
 # Fix change in API for get_user_pages()
 Patch114:       vbox_fix_42.3_api.patch
+# Allow use of gcc7
+Patch115:       vbox_fix_for_gcc7.patch
 # Fix for missing include needed for server 1.19
 Patch116:       Fix_for_server_1.19.patch
 #
@@ -370,6 +372,7 @@ as an "extpack" for VirtualBox. The implementation is licensed under GPL.
 %if 0%{?sle_version} == 120300
 %patch114 -p1
 %endif
+%patch115 -p1
 %patch116 -p1
 
 #copy user manual
@@ -745,13 +748,9 @@ getent group vboxsf >/dev/null || groupadd -r vboxsf
 %post websrv
 
 %post vnc
-# There is a major hack here. The extpack option for VBoxManage is supposed to accept the sha256sum hash
-# of the license file using the --accept-license option. This does not work. To get around the issue, a
-# file (yes) containing a single "Y" is created and that is piped to the standard input of VBoxManage.
-# With this hack, VBoxManage silently accepts the GPL V2 license. The new file is then deleted.
-echo "Y" > yes
-VBoxManage extpack install --replace "/usr/share/virtualbox/extensions/VNC-%{version}.vbox-extpack" > /dev/null < yes
-rm yes
+EXTPACK="/usr/share/virtualbox/extensions/VNC-%{version}.vbox-extpack"
+ACCEPT="$(tar --to-stdout -xf "${EXTPACK}" ./ExtPack-license.txt | sha256sum | head --bytes=64)"
+VBoxManage extpack install --replace "${EXTPACK}" --accept-license="${ACCEPT}" > /dev/null
 
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 # scriptlets preun