OVS_GREP_IFELSE([$KSRC26/include/linux/string.h $KSRC26/include/linux/slab.h],
[kmemdup], [OVS_DEFINE([HAVE_KMEMDUP])])
OVS_GREP_IFELSE([$KSRC26/include/linux/types.h], [bool],
[OVS_DEFINE([HAVE_BOOL_TYPE])])
OVS_GREP_IFELSE([$KSRC26/include/linux/string.h $KSRC26/include/linux/slab.h],
[kmemdup], [OVS_DEFINE([HAVE_KMEMDUP])])
OVS_GREP_IFELSE([$KSRC26/include/linux/types.h], [bool],
[OVS_DEFINE([HAVE_BOOL_TYPE])])