--- nfs-utils-2.6.4.orig/tools/rpcgen/Makefile.am	2023-11-17 18:32:39.000000000 +0100
+++ nfs-utils-2.6.4/tools/rpcgen/Makefile.am	2024-01-04 13:27:43.388279004 +0100
@@ -1,5 +1,10 @@
 CLEANFILES = *~
 
+CC=$(CC_FOR_BUILD)
+CFLAGS=$(CFLAGS_FOR_BUILD)
+CPPFLAGS=$(CPPFLAGS_FOR_BUILD)
+LDFLAGS=$(LDFLAGS_FOR_BUILD)
+
 bin_PROGRAMS = rpcgen
 man_MANS = rpcgen.1