Re: [Xen-devel] [PATCH 1 of 3] tools/configure.ac: add version check for glib2

[Ian Campbell <Ian.Campbell@xxxxxxxxxx>]

On Wed, 2012-06-13 at 09:01 +0100, Olaf Hering wrote:
> # HG changeset patch
> # User Olaf Hering <olaf@xxxxxxxxx>
> # Date 1339572293 -7200
> # Node ID ea554d05821b95a7e96e4a25cbf953c5abe35aeb
> # Parent  a70b35deb2b5592cc1b2363860f21bb2c7049885
> tools/configure.ac: add version check for glib2
> 
> xen-unstable fails to build in a SLES10SP4 environment since a long time
> because the included version of glib is slightly older than the required
> glib version. According to the docs glib version 2.12 includes base64
> support, but SLES10 is shipped with glib 2.8.6:
> 
> qemu-timer-common.o: In function `init_get_clock':
> /usr/src/packages/BUILD/xen-4.2.25432/non-dbg/tools/qemu-xen-dir/qemu-timer-common.c:57:
> undefined reference to `clock_gettime'
> qga/guest-agent-commands.o: In function `qmp_guest_file_write':
> qga/guest-agent-commands.c:249: undefined reference to `g_base64_decode'
> qga/guest-agent-commands.o: In function `qmp_guest_file_read':
> qga/guest-agent-commands.c:224: undefined reference to `g_base64_encode'
> collect2: ld returned 1 exit status
> make[3]: *** [qemu-ga] Error 1
> 
> Add a version check to configure to require at least glib 2.12 to build
> qemu-upstream.

Does this cause configure to fail or does it cause us to just not build
qemu-upstream? I think the former (which is fine with me) but your last
sentence suggests that latter.

> 
> Signed-off-by: Olaf Hering <olaf@xxxxxxxxx>
> 
> diff -r a70b35deb2b5 -r ea554d05821b tools/configure.ac
> --- a/tools/configure.ac
> +++ b/tools/configure.ac
> @@ -115,7 +115,7 @@ AX_PATH_PROG_OR_FAIL([BCC], [bcc])
>  AX_PATH_PROG_OR_FAIL([IASL], [iasl])
>  AX_CHECK_UUID
>  AX_CHECK_CURSES
> -PKG_CHECK_MODULES(glib, glib-2.0)
> +PKG_CHECK_MODULES(glib, [glib-2.0 >= 2.12])
>  
>  # Check library path
>  AX_DEFAULT_LIB
> 
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