newfs_nandfs compile error 11-STABLE

[Ronald Klop]

Hi,

I'm building 11-STABLE for SHEEVAPLUG on a 12-CURRENT/amd64.
I get this compile error.
How can I resolve this without a clean build? I would like to prevent  
recompiling llvm for 12 hours.

--- newfs_nandfs.o ---
cc  -O -pipe   -g -MD  -MF.depend.newfs_nandfs.o -MTnewfs_nandfs.o  
-std=gnu99 -Wsystem-headers -Werror -Wall -Wno-format-y2k -W  
-Wno-unused-parameter -Wstrict-prototypes -Wmissing-prototypes  
-Wpointer-arith -Wreturn-type -Wcast-qual -Wwrite-strings -Wswitch  
-Wshadow -Wunused-parameter -Wcast-align -Wchar-subscripts -Winline  
-Wnested-externs -Wredundant-decls -Wold-style-definition  
-Wno-pointer-sign -Wmissing-variable-declarations -Wthread-safety  
-Wno-empty-body -Wno-string-plus-int -Wno-unused-const-variable   
-Qunused-arguments  -c /usr/src-arm/sbin/newfs_nandfs/newfs_nandfs.c -o  
newfs_nandfs.o
/usr/src-arm/sbin/newfs_nandfs/newfs_nandfs.c:543:11: error: taking  
address of packed member 'f_uuid' of class or structure 'nandfs_fsdata'  
may result in an unaligned pointer value  
[-Werror,-Waddress-of-packed-member]
         uuidgen(&fsdata.f_uuid, 1);
                  ^~~~~~~~~~~~~
1 error generated.
*** [newfs_nandfs.o] Error code 1

make[4]: stopped in /usr/src-arm/sbin/newfs_nandfs
1 error

make[4]: stopped in /usr/src-arm/sbin/newfs_nandfs
*** [all_subdir_sbin/newfs_nandfs] Error code 2


Do I have to clean and rebuild some specific library?
Or something else?

Regards,
Ronald.