[PATCH v2 3/3] configure, meson: allow enabling vhost-user on all POSIX systems

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With the possibility of using a pipe pair via qemu_pipe() as a
replacement on operating systems that doesn't support eventfd,
vhost-user can also work on all POSIX systems.

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

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

diff --git a/configure b/configure
index c56ed53ee3..daccf4be7c 100755
--- a/configure
+++ b/configure
@@ -1659,8 +1659,8 @@ 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 "$vhost_user" = "yes" && test "$mingw32" = "yes"; then
+  error_exit "vhost-user is not available on Windows"
 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




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