[libvirt] [PATCH] udev: Fix build on older platforms

[Michal Privoznik]

On 05/31/2017 12:22 PM, Erik Skultety wrote:
> Caused by commit @d1eea6c1 due to the missing symbol on older platforms.
> 
> Signed-off-by: Erik Skultety <eskultet at redhat.com>
> ---
> Despite falling under build-breaker category, I'd like to get a proper review,
> since I'm not really familiar with autoconf and there might be a better fix.
> 
> Erik
> 
>  configure.ac                       | 2 +-
>  src/node_device/node_device_udev.c | 2 ++
>  2 files changed, 3 insertions(+), 1 deletion(-)


diff --git a/m4/virt-udev.m4 b/m4/virt-udev.m4
index 85ca2cb1a..be7dba5d2 100644
--- a/m4/virt-udev.m4
+++ b/m4/virt-udev.m4
@@ -34,6 +34,14 @@ AC_DEFUN([LIBVIRT_CHECK_UDEV],[
      if test "$with_udev_logging" = "yes" ; then
         AC_DEFINE_UNQUOTED([HAVE_UDEV_LOGGING], 1, [whether libudev logging can be used])
      fi
+
+    old_CFLAGS="$CFLAGS"
+    old_LIBS="$LIBS"
+    CFLAGS="$CFLAGS $UDEV_CFLAGS"
+    LIBS="$CFLAGS $UDEV_LIBS"
+    AC_CHECK_FUNCS([udev_monitor_set_receive_buffer_size])
+    CFLAGS="$old_CFLAGS"
+    LIBS="$old_LIBS"
   fi
 ])


This is what I wanted to say, but Daniel beat me to it. ACK if you go this way.

Michal