Modular kernel build failure on port-amd64

[Paul Goyette <paul%whooppee.com@localhost>]

Sources are up-to-date as of a couple hours ago...  Kernel config has 
all of the filesystem options removed, since I'm hoping to use the new 
modules.  I do, however, have "root on ffs" in the config.  It appears 
that this requires me to include the ffs filesystem in the kernel, 
rather than being able to load the module dynamically at boot time?

#   compile  LIGHTNING/vector.o
/build/netbsd-local/tools/x86_64/amd64/bin/x86_64--netbsd-gcc -x 
assembler-with-cpp -traditional-cpp -D_LOCORE -Wa,-fatal-warnings -Damd64 
-Dx86_64 -I. -I/build/netbsd-local/src/sys/../common/include 
-I/build/netbsd-local/src/sys/arch -I/build/netbsd-local/src/sys -nostdinc 
-DMODULAR -DDIAGNOSTIC -DMAXUSERS=64 -D_KERNEL -D_KERNEL_OPT 
-I/build/netbsd-local/src/sys/lib/libkern/../../../common/lib/libc/quad 
-I/build/netbsd-local/src/sys/lib/libkern/../../../common/lib/libc/string 
-I/build/netbsd-local/src/sys/lib/libkern/../../../common/lib/libc/arch/x86_64/string
 -I/build/netbsd-local/src/sys/../common/include 
-I/build/netbsd-local/src/sys/dist/ipf -c 
/build/netbsd-local/src/sys/arch/amd64/amd64/vector.S
#   compile  LIGHTNING/param.o
/build/netbsd-local/tools/x86_64/amd64/bin/x86_64--netbsd-gcc -mcmodel=kernel 
-mno-red-zone -ffreestanding -fno-zero-initialized-in-bss -g -O2 
-fno-omit-frame-pointer -std=gnu99 -fno-strict-aliasing -Werror -Wall -Wno-main 
-Wno-format-zero-length -Wpointer-arith -Wmissing-prototypes 
-Wstrict-prototypes -Wswitch -Wshadow -Wcast-qual -Wwrite-strings 
-Wno-unreachable-code -Wno-sign-compare -Wno-pointer-sign -Wno-attributes 
-Wextra -Wno-unused-parameter -Werror -Damd64 -Dx86_64 -I. 
-I/build/netbsd-local/src/sys/../common/include 
-I/build/netbsd-local/src/sys/arch -I/build/netbsd-local/src/sys -nostdinc 
-DMODULAR -DDIAGNOSTIC -DMAXUSERS=64 -D_KERNEL -D_KERNEL_OPT 
-I/build/netbsd-local/src/sys/lib/libkern/../../../common/lib/libc/quad 
-I/build/netbsd-local/src/sys/lib/libkern/../../../common/lib/libc/string 
-I/build/netbsd-local/src/sys/lib/libkern/../../../common/lib/libc/arch/x86_64/string
 -I/build/netbsd-local/src/sys/../common/include 
-I/build/netbsd-local/src/sys/dist/ipf -c param.c
#   compile  LIGHTNING/vers.o
/build/netbsd-local/tools/x86_64/amd64/bin/x86_64--netbsd-gcc  -mcmodel=kernel 
-mno-red-zone -ffreestanding -fno-zero-initialized-in-bss -g -O2 
-fno-omit-frame-pointer -std=gnu99 -fno-strict-aliasing   -Werror -Wall 
-Wno-main -Wno-format-zero-length -Wpointer-arith -Wmissing-prototypes 
-Wstrict-prototypes -Wswitch -Wshadow -Wcast-qual -Wwrite-strings 
-Wno-unreachable-code -Wno-sign-compare -Wno-pointer-sign -Wno-attributes 
-Wextra -Wno-unused-parameter  -Werror   -Damd64 -Dx86_64 -I.  
-I/build/netbsd-local/src/sys/../common/include 
-I/build/netbsd-local/src/sys/arch  -I/build/netbsd-local/src/sys -nostdinc 
-DMODULAR -DDIAGNOSTIC -DMAXUSERS=64 -D_KERNEL -D_KERNEL_OPT 
-I/build/netbsd-local/src/sys/lib/libkern/../../../common/lib/libc/quad 
-I/build/netbsd-local/src/sys/lib/libkern/../../../common/lib/libc/string 
-I/build/netbsd-local/src/sys/lib/libkern/../../../common/lib/libc/arch/x86_64/string
   -I/build/netbsd-local/src/sys/../common/include 
-I/build/netbsd-local/src/sys/dist/ipf  -c vers.c
#      link  LIGHTNING/netbsd
/build/netbsd-local/tools/x86_64/amd64/bin/x86_64--netbsd-ld -Map netbsd.map 
--cref -T /build/netbsd-local/src/sys/arch/amd64/conf/kern.ldscript -Ttext 
0xffffffff80100000 -e start -X -o netbsd ${SYSTEM_OBJ} ${EXTRA_OBJ} vers.o
swapnetbsd.o:(.data+0x20): undefined reference to `ffs_mountroot'
*** [netbsd] Error code 1
1 error
nbmake: stopped in 
/build/netbsd-local/obj/amd64/sys/arch/amd64/compile/LIGHTNING

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