+# --with-libxenctrl {{{
+with_libxenctrl_cppflags=""
+with_libxenctrl_ldflags=""
+AC_ARG_WITH(libxenctrl, [AS_HELP_STRING([--with-libxenctrl@<:@=PREFIX@:>@], [Path to libxenctrl.])],
+[
+ if test "x$withval" != "xno" && test "x$withval" != "xyes"
+ then
+ with_libxenctrl_cppflags="-I$withval/include"
+ with_libxenctrl_ldflags="-L$withval/lib"
+ with_libxenctrl="yes"
+ else
+ with_libxenctrl="$withval"
+ fi
+],
+[
+ with_libxenctrl="yes"
+])
+if test "x$with_libxenctrl" = "xyes"
+then
+ SAVE_CPPFLAGS="$CPPFLAGS"
+ CPPFLAGS="$CPPFLAGS $with_libxenctrl_cppflags"
+
+ AC_CHECK_HEADERS(xenctrl.h, [with_libxenctrl="yes"], [with_libxenctrl="no (xenctrl.h not found)"])
+
+ CPPFLAGS="$SAVE_CPPFLAGS"
+fi
+if test "x$with_libxenctrl" = "xyes"
+then
+ SAVE_CPPFLAGS="$CPPFLAGS"
+ SAVE_LDFLAGS="$LDFLAGS"
+ CPPFLAGS="$CPPFLAGS $with_libxenctrl_cppflags"
+ LDFLAGS="$LDFLAGS $with_libxenctrl_ldflags"
+
+ #Xen versions older than 3.4 has no xc_getcpuinfo()
+ AC_CHECK_LIB(xenctrl, xc_getcpuinfo, [with_libxenctrl="yes"], [with_libxenctrl="no (symbol 'xc_getcpuinfo' not found)"], [])
+
+ CPPFLAGS="$SAVE_CPPFLAGS"
+ LDFLAGS="$SAVE_LDFLAGS"
+ LIBXENCTL_CPPFLAGS="$with_libxenctl_cppflags"
+ LIBXENCTL_LDFLAGS="$with_libxenctl_ldflags"
+ AC_SUBST(LIBXENCTL_CPPFLAGS)
+ AC_SUBST(LIBXENCTL_LDFLAGS)
+fi
+