[PATCH 2/2] Allow building vhost-user in BSD

[Sergio Lopez <slp@redhat.com>]

With the possibility of using pipefd as a replacement on operating
systems that doesn't support eventfd, vhost-user can also work on BSD
systems.

This change allows enabling vhost-user on BSD platforms too and
makes libvhost_user (which still depends on eventfd) a linux-only
feature.

Signed-off-by: Sergio Lopez <slp@redhat.com>
---
 configure   | 5 +++--
 meson.build | 2 +-
 2 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/configure b/configure
index c56ed53ee3..93aa22e345 100755
--- a/configure
+++ b/configure
@@ -1659,8 +1659,9 @@ fi
 # vhost interdependencies and host support
 
 # vhost backends
-if test "$vhost_user" = "yes" && test "$linux" != "yes"; then
-  error_exit "vhost-user is only available on Linux"
+if test "$vhost_user" = "yes" && \
+    test "$linux" != "yes" && test "$bsd" != "yes" ; then
+  error_exit "vhost-user is only available on Linux and BSD"
 fi
 test "$vhost_vdpa" = "" && vhost_vdpa=$linux
 if test "$vhost_vdpa" = "yes" && test "$linux" != "yes"; then
diff --git a/meson.build b/meson.build
index 8df40bfac4..f2bc439c30 100644
--- a/meson.build
+++ b/meson.build
@@ -2701,7 +2701,7 @@ if have_system or have_user
 endif
 
 vhost_user = not_found
-if 'CONFIG_VHOST_USER' in config_host
+if targetos == 'linux' and 'CONFIG_VHOST_USER' in config_host
   libvhost_user = subproject('libvhost-user')
   vhost_user = libvhost_user.get_variable('vhost_user_dep')
 endif
-- 
2.35.1