Re: [Qemu-devel] git master build failure in 9pfs

["Daniel P. Berrange" <berrange@redhat.com>]

On Thu, Mar 02, 2017 at 05:28:24PM +0000, Mark Cave-Ayland wrote:
> Does anyone else see the following error when trying to build git master?
> 
> cc -I/home/build/src/qemu/git/qemu/hw/9pfs -Ihw/9pfs
> -I/home/build/src/qemu/git/qemu/tcg
> -I/home/build/src/qemu/git/qemu/tcg/i386
> -I/home/build/src/qemu/git/qemu/linux-headers
> -I/home/build/src/qemu/git/qemu/linux-headers -I.
> -I/home/build/src/qemu/git/qemu -I/home/build/src/qemu/git/qemu/include
> -I/usr/include/pixman-1   -I/home/build/src/qemu/git/qemu/dtc/libfdt
> -Werror -pthread -I/usr/include/glib-2.0
> -I/usr/lib/x86_64-linux-gnu/glib-2.0/include   -m64 -mcx16 -D_GNU_SOURCE
> -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -Wstrict-prototypes
> -Wredundant-decls -Wall -Wundef -Wwrite-strings -Wmissing-prototypes
> -fno-strict-aliasing -fno-common -fwrapv  -Wendif-labels
> -Wno-missing-include-dirs -Wempty-body -Wnested-externs
> -Wformat-security -Wformat-y2k -Winit-self -Wignored-qualifiers
> -Wold-style-declaration -Wold-style-definition -Wtype-limits
> -fstack-protector-all -I/usr/include/p11-kit-1
> -I/usr/include/libpng12   -I/home/build/src/qemu/git/qemu/tests -MMD -MP
> -MT hw/9pfs/9p-util.o -MF hw/9pfs/9p-util.d -O2 -U_FORTIFY_SOURCE
> -D_FORTIFY_SOURCE=2 -g   -c -o hw/9pfs/9p-util.o hw/9pfs/9p-util.c
> In file included from hw/9pfs/9p-util.c:15:0:
> hw/9pfs/9p-util.h: In function ‘openat_dir’:
> hw/9pfs/9p-util.h:25:57: error: ‘O_PATH’ undeclared (first use in this
> function)
> hw/9pfs/9p-util.h:25:57: note: each undeclared identifier is reported
> only once for each function it appears in
> hw/9pfs/9p-util.h:26:1: error: control reaches end of non-void function
> [-Werror=return-type]
> 
> Build platform is Debian Wheezy on an x86_64 host.

IIUC, O_PATH was introduced in glibc 2.14 and Wheezy only has 2.13.

So unless we want to make this 9pfs code a configurable option, this 
means Debian Wheezy is no longer a supportable platform for QEMU.

Regards,
Daniel
-- 
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