Re: [Qemu-discuss] block-raw-posix.c:242: error: `SIGUSR2' undeclared here (not in a function)

[Mike Zhang]

I think I found the root cause, it seems there's a coding mistake in the qemu0.9.1 block-raw-posix.c

it included the <signal.h> when #ifdef __sun__ is true,

so I include the <signal.h> out of the #ifdef block, to let it always included.

On Sun, Apr 28, 2013 at 8:34 PM, Mike Zhang <address@hidden> wrote:

Thanks for your reply, Fam,

Since I used a software which is only support qemu0.9.1 version, and when I install the qemu0.9.1, it need the gcc-3.4. 

Is there any other way to make it work in this scenario?

On Sun, Apr 28, 2013 at 5:07 PM, Fam Zheng <address@hidden> wrote:

Could you try to upgrade your glibc and maybe use gcc4 to compile.
Latest release of qemu is worth a try?

Thanks.

On Sun, 04/28 16:55, Mike Zhang wrote:
>    when I install the qemu0.9.1 on my ubuntu13, it gives me this error.
>    I also tried to edit the block-raw-posix.c #include <signal.h>
>    to linux/signal.h and this asm/singal.h
>    but it effect nothing, the error always here.
>    Is there any expert can give me a hand to help me on this problem?
>    I will be appreciated your helps, thanks!
>    =================================
>    gcc-3.4 -Wall -O2 -g -fno-strict-aliasing -I.
>    -I/home/ubuntu/Downloads/qemu-0.9.1 -MMD -MP -D_GNU_SOURCE
>    -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE
>    -I/home/ubuntu/Downloads/qemu-0.9.1/slirp -DQEMU_IMG    -c -o
>    qemu-img-block-raw-posix.o block-raw-posix.c
>    block-raw-posix.c:242: error: `SIGUSR2' undeclared here (not in a
>    function)
>    block-raw-posix.c: In function `qemu_aio_init':
>    block-raw-posix.c:264: error: storage size of 'act' isn't known
>    block-raw-posix.c:268: warning: implicit declaration of function
>    `sigfillset'
>    block-raw-posix.c:271: warning: implicit declaration of function
>    `sigaction'
>    block-raw-posix.c:264: warning: unused variable `act'
>    block-raw-posix.c: In function `qemu_aio_wait_start':
>    block-raw-posix.c:348: warning: implicit declaration of function
>    `sigemptyset'
>    block-raw-posix.c:349: warning: implicit declaration of function
>    `sigaddset'
>    block-raw-posix.c:350: warning: implicit declaration of function
>    `sigprocmask'
>    block-raw-posix.c:350: error: `SIG_BLOCK' undeclared (first use in this
>    function)
>    block-raw-posix.c:350: error: (Each undeclared identifier is reported only
>    once
>    block-raw-posix.c:350: error: for each function it appears in.)
>    block-raw-posix.c: In function `qemu_aio_wait':
>    block-raw-posix.c:364: warning: implicit declaration of function `sigwait'
>    block-raw-posix.c: In function `qemu_aio_wait_end':
>    block-raw-posix.c:370: error: `SIG_SETMASK' undeclared (first use in this
>    function)

--
Fam