[libvirt] [PATCH 1/5] build: Define NUMACTL for numa tuning use

[Osier Yang]

NUMACTL is the path of binary program 'numactl'.
---
 configure.ac |   14 ++++++++++----
 1 files changed, 10 insertions(+), 4 deletions(-)

diff --git a/configure.ac b/configure.ac
index 7c68bca..3b8e0be 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1233,19 +1233,22 @@ AM_CONDITIONAL([WITH_DTRACE], [test "$with_dtrace" != "no"])
 
 dnl NUMA lib
 AC_ARG_WITH([numactl],
-  AC_HELP_STRING([--with-numactl], [use numactl for host topology info @<:@default=check@:>@]),
-  [],
-  [with_numactl=check])
+  AC_HELP_STRING([--with-numactl],
+    [use numactl for host topology info and setting NUMA policy for domain process @<:@default=check@:>@]),
+    [],
+    [with_numactl=check])
 
 NUMACTL_CFLAGS=
 NUMACTL_LIBS=
 if test "$with_qemu" = "yes" && test "$with_numactl" != "no"; then
   old_cflags="$CFLAGS"
   old_libs="$LIBS"
+  AC_PATH_PROG([NUMACTL], [numactl], [], [$PATH:/sbin:/usr/sbin])
+
   if test "$with_numactl" = "check"; then
     AC_CHECK_HEADER([numa.h],[],[with_numactl=no])
     AC_CHECK_LIB([numa], [numa_available],[],[with_numactl=no])
-    if test "$with_numactl" != "no"; then
+    if test "$with_numactl" != "no" && test -n "$NUMACTL"; then
       with_numactl="yes"
     fi
   else
@@ -1254,6 +1257,8 @@ if test "$with_qemu" = "yes" && test "$with_numactl" != "no"; then
     AC_CHECK_LIB([numa], [numa_available],[],[fail=1])
     test $fail = 1 &&
       AC_MSG_ERROR([You must install the numactl development package in order to compile and run libvirt])
+    test -z "$NUMACTL" &&
+      AC_MSG_ERROR([You must install numactl package to compile and run libvirt])
   fi
   CFLAGS="$old_cflags"
   LIBS="$old_libs"
@@ -1261,6 +1266,7 @@ fi
 if test "$with_numactl" = "yes"; then
   NUMACTL_LIBS="-lnuma"
   AC_DEFINE_UNQUOTED([HAVE_NUMACTL], 1, [whether numactl is available for topology info])
+  AC_DEFINE_UNQUOTED([NUMACTL],["$NUMACTL"], [Location or name of the numactl program])
 fi
 AM_CONDITIONAL([HAVE_NUMACTL], [test "$with_numactl" != "no"])
 AC_SUBST([NUMACTL_CFLAGS])
-- 
1.7.4