From 7317131bc1db8dc1f1628c764b672840f24db435 Mon Sep 17 00:00:00 2001
From: Stefan Weil <weil@mail.berlios.de>
Date: Thu, 1 Oct 2009 20:10:37 +0200
Subject: [PATCH] Check availability of uuid header / library

If available, the Universally Unique Identifier library
is used by the vdi block driver.

Other parts of QEMU (vl.c) could also use it.

Signed-off-by: Stefan Weil <weil@mail.berlios.de>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
---
 block/vdi.c |  4 ++--
 configure   | 36 ++++++++++++++++++++++++++++++++++++
 2 files changed, 38 insertions(+), 2 deletions(-)

diff --git a/block/vdi.c b/block/vdi.c
index f5e38db..45aa81c 100644
--- a/block/vdi.c
+++ b/block/vdi.c
@@ -53,7 +53,7 @@
 #include "block_int.h"
 #include "module.h"
 
-#if defined(HAVE_UUID_H)
+#if defined(CONFIG_UUID)
 #include <uuid/uuid.h>
 #else
 /* TODO: move uuid emulation to some central place in QEMU. */
@@ -116,7 +116,7 @@ void uuid_unparse(const uuid_t uu, char *out);
 /* Unallocated blocks use this index (no need to convert endianess). */
 #define VDI_UNALLOCATED UINT32_MAX
 
-#if !defined(HAVE_UUID_H)
+#if !defined(CONFIG_UUID)
 void uuid_generate(uuid_t out)
 {
     memset(out, 0, sizeof(out));
diff --git a/configure b/configure
index 480c81d..cc3cbd6 100755
--- a/configure
+++ b/configure
@@ -187,6 +187,7 @@ kvm=""
 nptl=""
 sdl=""
 sparse="no"
+uuid=""
 vde=""
 vnc_tls=""
 vnc_sasl=""
@@ -452,6 +453,10 @@ for opt do
   ;;
   --disable-slirp) slirp="no"
   ;;
+  --disable-uuid) uuid="no"
+  ;;
+  --enable-uuid) uuid="yes"
+  ;;
   --disable-vde) vde="no"
   ;;
   --enable-vde) vde="yes"
@@ -696,6 +701,8 @@ echo "  --fmod-inc               path to FMOD includes"
 echo "  --oss-lib                path to OSS library"
 echo "  --enable-uname-release=R Return R for uname -r in usermode emulation"
 echo "  --sparc_cpu=V            Build qemu for Sparc architecture v7, v8, v8plus, v8plusa, v9"
+echo "  --disable-uuid           disable uuid support"
+echo "  --enable-uuid            enable uuid support"
 echo "  --disable-vde            disable support for vde network"
 echo "  --enable-vde             enable support for vde network"
 echo "  --disable-linux-aio      disable Linux AIO support"
@@ -1048,6 +1055,31 @@ if compile_prog "" "" ; then
 fi
 
 ##########################################
+# uuid_generate() probe, used for vdi block driver
+if test "$uuid" != "no" ; then
+  uuid_libs="-luuid"
+  cat > $TMPC << EOF
+#include <uuid/uuid.h>
+int main(void)
+{
+    uuid_t my_uuid;
+    uuid_generate(my_uuid);
+    return 0;
+}
+EOF
+  if compile_prog "" "$uuid_libs" ; then
+    uuid="yes"
+    libs_softmmu="$uuid_libs $libs_softmmu"
+    libs_tools="$uuid_libs $libs_tools"
+  else
+    if test "$uuid" = "yes" ; then
+      feature_not_found "uuid"
+    fi
+    uuid=no
+  fi
+fi
+
+##########################################
 # vde libraries probe
 if test "$vde" != "no" ; then
   vde_libs="-lvdeplug"
@@ -1752,6 +1784,7 @@ echo "KVM support       $kvm"
 echo "fdt support       $fdt"
 echo "preadv support    $preadv"
 echo "fdatasync         $fdatasync"
+echo "uuid support      $uuid"
 
 if test $sdl_too_old = "yes"; then
 echo "-> Your SDL version is too old - please upgrade to have SDL support"
@@ -1862,6 +1895,9 @@ fi
 if test "$fnmatch" = "yes" ; then
   echo "CONFIG_FNMATCH=y" >> $config_host_mak
 fi
+if test "$uuid" = "yes" ; then
+  echo "CONFIG_UUID=y" >> $config_host_mak
+fi
 qemu_version=`head $source_path/VERSION`
 echo "VERSION=$qemu_version" >>$config_host_mak
 echo "PKGVERSION=$pkgversion" >>$config_host_mak
-- 
2.7.4