https://bugs.gentoo.org/735146

From 4fd46e6cdd976f4aecdc3fbbad728e00a7bc4ee0 Mon Sep 17 00:00:00 2001
From: Rafael Kitover <rkitover@gmail.com>
Date: Thu, 13 Aug 2020 20:19:24 +0000
Subject: [PATCH] configure: Require pixman for vhost-user-gpu.

Use the test from Makefile to check if vhost-user-gpu is being built,
and if so require pixman.

Signed-off-by: Rafael Kitover <rkitover@gmail.com>
---
 configure | 28 ++++++++++++++--------------
 1 file changed, 14 insertions(+), 14 deletions(-)

--- a/configure
+++ b/configure
@@ -4062,20 +4062,6 @@ if test "$modules" = yes; then
     fi
 fi
 
-##########################################
-# pixman support probe
-
-if test "$softmmu" = "no"; then
-  pixman_cflags=
-  pixman_libs=
-elif $pkg_config --atleast-version=0.21.8 pixman-1 > /dev/null 2>&1; then
-  pixman_cflags=$($pkg_config --cflags pixman-1)
-  pixman_libs=$($pkg_config --libs pixman-1)
-else
-  error_exit "pixman >= 0.21.8 not present." \
-      "Please install the pixman devel package."
-fi
-
 ##########################################
 # libmpathpersist probe
 
@@ -4491,6 +4477,20 @@ if test "$opengl" = "yes" && test "$have_x11" = "yes"; then
   done
 fi
 
+##########################################
+# pixman support probe
+
+if test "$softmmu" = "no" && ! test "${linux} ${virglrenderer} ${gbm} ${want_tools}" = "yes yes yes yes";  then
+  pixman_cflags=
+  pixman_libs=
+elif $pkg_config --atleast-version=0.21.8 pixman-1 > /dev/null 2>&1; then
+  pixman_cflags=$($pkg_config --cflags pixman-1)
+  pixman_libs=$($pkg_config --libs pixman-1)
+else
+  error_exit "pixman >= 0.21.8 not present." \
+      "Please install the pixman devel package."
+fi
+
 ##########################################
 # libxml2 probe
 if test "$libxml2" != "no" ; then
-- 
2.28.0