KERNCONF=XENHVM FAILED to build

[Roger Pau Monné]

On 11/07/13 13:11, Jeroen van der Ham wrote:
> Hi,
> 
> I've been trying to build kernel on FreeBSD 9.0 also, and it fails for me as well:
> 
> clang -c -O2 -pipe -fno-strict-aliasing  -std=c99 -g -Wall -Wredundant-decls -Wnested-externs -Wstrict-prototypes  -Wmissing-prototypes -Wpointer-arith -Winline -Wcast-qual  -Wundef -Wno-pointer-sign -fformat-extensions  -Wmissing-include-dirs -fdiagnostics-show-option  -Wno-error-tautological-compare -Wno-error-empty-body  -Wno-error-parentheses-equality  -nostdinc  -I. -I/usr/home/jeroen/freebsd/sys -I/usr/home/jeroen/freebsd/sys/contrib/altq -I/usr/home/jeroen/freebsd/sys/contrib/libfdt -D_KERNEL -DHAVE_KERNEL_OPTION_HEADERS -include opt_global.h  -fno-omit-frame-pointer -mno-aes -mno-avx -mcmodel=kernel -mno-red-zone -mno-mmx -mno-sse -msoft-float  -fno-asynchronous-unwind-tables -ffreestanding -fstack-protector -Werror  /usr/home/jeroen/freebsd/sys/kern/vfs_mountroot.c
> /usr/home/jeroen/freebsd/sys/kern/vfs_mountroot.c:270:2: error: expression result unused [-Werror,-Wunused-value]
>         VFS_ROOT(mporoot, LK_EXCLUSIVE, &vporoot);
>         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> /usr/home/jeroen/freebsd/sys/sys/mount.h:668:2: note: expanded from:
>         _rc; })
>         ^~~
> 1 error generated.
> *** Error code 1
> 
> Stop in /usr/obj/usr/home/jeroen/freebsd/sys/GENERIC.
> *** Error code 1

This doesn't seem to be related to the Xen support at all, and also you
are building the GENERIC kernel, not XENHVM. I guess it would be better
to move this thread to freebsd-current ML (if errors are not related to
Xen code).