configure: allow disabling pixman if not needed

When we build neither any system emulation targets nor the tools there
is actually no need for pixman library.  In that case do not enforce
presence of that library on the system.

Reviewed-by: Andreas F=E4rber <afaerber@suse.de>
Signed-off-by: Robert Schiele <rschiele@gmail.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>

1 files changed, 16 insertions, 2 deletions

diff --git a/configure b/configure
index 14f05c7..99c1ec3 100755
--- a/configure
+++ b/configure
@@ -656,6 +656,8 @@ for opt do
   ;;
   --without-system-pixman) pixman="internal"
   ;;
+  --without-pixman) pixman="none"
+  ;;
   --disable-sdl) sdl="no"
   ;;
   --enable-sdl) sdl="yes"
@@ -2130,13 +2132,25 @@ fi
 # pixman support probe
 
 if test "$pixman" = ""; then
-  if $pkg_config pixman-1 > /dev/null 2>&1; then
+  if test "$want_tools" = "no" -a "$softmmu" = "no"; then
+    pixman="none"
+  elif $pkg_config pixman-1 > /dev/null 2>&1; then
     pixman="system"
   else
     pixman="internal"
   fi
 fi
-if test "$pixman" = "system"; then
+if test "$pixman" = "none"; then
+  if test "$want_tools" != "no" -o "$softmmu" != "no"; then
+    echo "ERROR: pixman disabled but system emulation or tools build"
+    echo "       enabled.  You can turn off pixman only if you also"
+    echo "       disable all system emulation targets and the tools"
+    echo "       build with '--disable-tools --disable-system'."
+    exit 1
+  fi
+  pixman_cflags=
+  pixman_libs=
+elif test "$pixman" = "system"; then
   pixman_cflags=`$pkg_config --cflags pixman-1 2>/dev/null`
   pixman_libs=`$pkg_config --libs pixman-1 2>/dev/null`
 else