As with EFI, OFW and U-Boot etc only compile FDT support on those

architectures that actually use it.

sys/boot/Makefile

@@ -8,10 +8,6 @@
 SUBDIR+=		ficl
 .endif
 
-.if ${MK_FDT} != "no"
-SUBDIR+=		fdt
-.endif
-
 # Pick the machine-dependent subdir based on the target architecture.
 ADIR=			${MACHINE:S/amd64/i386/:S/powerpc64/powerpc/}
 .if exists(${.CURDIR}/${ADIR}/.)

sys/boot/Makefile.arm

@@ -1,3 +1,7 @@
 # $FreeBSD$
 
+.if ${MK_FDT} != "no"
+SUBDIR+=		fdt
+.endif
+
 SUBDIR+=		uboot

sys/boot/Makefile.powerpc

@@ -1,4 +1,8 @@
 # $FreeBSD$
 
+.if ${MK_FDT} != "no"
+SUBDIR+=		fdt
+.endif
+
 SUBDIR+=		ofw
 SUBDIR+=		uboot