configure: add Linux libnuma detection

Add detection of libnuma (mostly contained in the numactl package)
to the configure script. Can be enabled or disabled on the command
line, default is use if available.

Signed-off-by: Andre Przywara <[email protected]>
Signed-off-by: Wanlong Gao <[email protected]>
Signed-off-by: Paolo Bonzini <[email protected]>
Signed-off-by: Hu Tao <[email protected]>
Acked-by: Michael S. Tsirkin <[email protected]>
Signed-off-by: Michael S. Tsirkin <[email protected]>

Author: gaowanlong

configure

@@ -334,6 +334,7 @@ tpm="no"
 libssh2=""
 vhdx=""
 quorum=""
+numa=""
 
 # parse CC options first
 for opt do
@@ -1118,6 +1119,10 @@ for opt do
   ;;
   --enable-quorum) quorum="yes"
   ;;
+  --disable-numa) numa="no"
+  ;;
+  --enable-numa) numa="yes"
+  ;;
   *)
       echo "ERROR: unknown option $opt"
       echo "Try '$0 --help' for more information"
@@ -1384,6 +1389,8 @@ Advanced options (experts only):
   --enable-vhdx            enable support for the Microsoft VHDX image format
   --disable-quorum         disable quorum block filter support
   --enable-quorum          enable quorum block filter support
+  --disable-numa           disable libnuma support
+  --enable-numa            enable libnuma support
 
 NOTE: The object files are built at the place where configure is launched
 EOF
@@ -3167,6 +3174,26 @@ if compile_prog "" "" ; then
   splice=yes
 fi
 
+##########################################
+# libnuma probe
+
+if test "$numa" != "no" ; then
+  cat > $TMPC << EOF
+#include <numa.h>
+int main(void) { return numa_available(); }
+EOF
+
+  if compile_prog "" "-lnuma" ; then
+    numa=yes
+    libs_softmmu="-lnuma $libs_softmmu"
+  else
+    if test "$numa" = "yes" ; then
+      feature_not_found "numa" "install numactl devel"
+    fi
+    numa=no
+  fi
+fi
+
 ##########################################
 # signalfd probe
 signalfd="no"
@@ -4241,6 +4268,7 @@ echo "vhdx              $vhdx"
 echo "Quorum            $quorum"
 echo "lzo support       $lzo"
 echo "snappy support    $snappy"
+echo "NUMA host support $numa"
 
 if test "$sdl_too_old" = "yes"; then
 echo "-> Your SDL version is too old - please upgrade to have SDL support"
@@ -5210,6 +5238,10 @@ if [ "$dtc_internal" = "yes" ]; then
   echo "config-host.h: subdir-dtc" >> $config_host_mak
 fi
 
+if test "$numa" = "yes"; then
+  echo "CONFIG_NUMA=y" >> $config_host_mak
+fi
+
 # build tree in object directory in case the source is not in the current directory
 DIRS="tests tests/tcg tests/tcg/cris tests/tcg/lm32 tests/libqos tests/qapi-schema tests/tcg/xtensa tests/qemu-iotests"
 DIRS="$DIRS fsdev"