-find_file(ACL_FILE NAMES acl.api.vapi.hpp PATH_SUFFIXES vapi HINTS ${VPP_INCLUDE_DIR_HINT})
-find_file(NAT_FILE NAMES nat.api.vapi.hpp PATH_SUFFIXES vapi HINTS ${VPP_INCLUDE_DIR_HINT})
-find_file(L2E_FILE NAMES l2e.api.vapi.hpp PATH_SUFFIXES vapi HINTS ${VPP_INCLUDE_DIR_HINT})
-find_file(GBP_FILE NAMES gbp.api.vapi.hpp PATH_SUFFIXES vapi HINTS ${VPP_INCLUDE_DIR_HINT})
+find_file(ACL_FILE NAMES acl.api.vapi.hpp PATH_SUFFIXES vapi)
+find_file(NAT_FILE NAMES nat.api.vapi.hpp PATH_SUFFIXES vapi)
+find_file(L2E_FILE NAMES l2e.api.vapi.hpp PATH_SUFFIXES vapi)
+find_file(GBP_FILE NAMES gbp.api.vapi.hpp PATH_SUFFIXES vapi)
+find_file(IGMP_FILE NAMES igmp.api.vapi.hpp PATH_SUFFIXES vapi)