+
+# X.org helper macros
+%__xorg_abi_requires() Requires: xorg-xserver-server(%{expand:%1}-abi) = %{expand:%{%{!?2:%{1}}%{?2}}}
+#
+%xorg_xserver_ansic_abi %(awk '/#define ABI_ANSIC_VERSION/ { split($0,A,/[(,)]/); printf("%d.%d",A[2], A[3]); }' /usr/include/xorg/xf86Module.h 2> /dev/null || echo ERROR)
+%xorg_xserver_extension_abi %(awk '/#define ABI_EXTENSION_VERSION/ { split($0,A,/[(,)]/); printf("%d.%d",A[2], A[3]); }' /usr/include/xorg/xf86Module.h 2> /dev/null || echo ERROR)
+%xorg_xserver_font_abi %(awk '/#define ABI_FONT_VERSION/ { split($0,A,/[(,)]/); printf("%d.%d",A[2], A[3]); }' /usr/include/xorg/xf86Module.h 2> /dev/null | echo ERROR)
+%xorg_xserver_videodrv_abi %(awk '/#define ABI_VIDEODRV_VERSION/ { split($0,A,/[(,)]/); printf("%d.%d",A[2], A[3]); }' /usr/include/xorg/xf86Module.h 2> /dev/null || echo ERROR)
+%xorg_xserver_xinput_abi %(awk '/#define ABI_XINPUT_VERSION/ { split($0,A,/[(,)]/); printf("%d.%d",A[2], A[3]); }' /usr/include/xorg/xf86Module.h 2> /dev/null || echo ERROR)
+
+%requires_xorg_xserver_extension %{__xorg_abi_requires ansic xorg_xserver_ansic_abi} \
+%{__xorg_abi_requires extension xorg_xserver_extension_abi}
+%requires_xorg_xserver_xinput %{__xorg_abi_requires ansic xorg_xserver_ansic_abi} \
+%{__xorg_abi_requires xinput xorg_xserver_xinput_abi}
+%requires_xorg_xserver_font %{__xorg_abi_requires ansic xorg_xserver_ansic_abi} \
+%{__xorg_abi_requires font xorg_xserver_font_abi}
+%requires_xorg_xserver_videodrv %{__xorg_abi_requires ansic xorg_xserver_ansic_abi} \
+%{__xorg_abi_requires videodrv xorg_xserver_videodrv_abi}
+