--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/common/autoconf/lib-alsa.m4	Wed Oct 07 15:26:48 2015 +0200
@@ -0,0 +1,90 @@
+#
+# Copyright (c) 2011, 2015, Oracle and/or its affiliates. All rights reserved.
+# DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+#
+# This code is free software; you can redistribute it and/or modify it
+# under the terms of the GNU General Public License version 2 only, as
+# published by the Free Software Foundation.  Oracle designates this
+# particular file as subject to the "Classpath" exception as provided
+# by Oracle in the LICENSE file that accompanied this code.
+#
+# This code is distributed in the hope that it will be useful, but WITHOUT
+# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+# version 2 for more details (a copy is included in the LICENSE file that
+# accompanied this code).
+#
+# You should have received a copy of the GNU General Public License version
+# 2 along with this work; if not, write to the Free Software Foundation,
+# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+#
+# Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+# or visit www.oracle.com if you need additional information or have any
+# questions.
+#
+
+################################################################################
+# Setup alsa (Advanced Linux Sound Architecture)
+################################################################################
+AC_DEFUN_ONCE([LIB_SETUP_ALSA],
+[
+  AC_ARG_WITH(alsa, [AS_HELP_STRING([--with-alsa],
+      [specify prefix directory for the alsa package
+      (expecting the libraries under PATH/lib and the headers under PATH/include)])])
+  AC_ARG_WITH(alsa-include, [AS_HELP_STRING([--with-alsa-include],
+      [specify directory for the alsa include files])])
+  AC_ARG_WITH(alsa-lib, [AS_HELP_STRING([--with-alsa-lib],
+      [specify directory for the alsa library])])
+
+  if test "x$NEEDS_LIB_ALSA" = xfalse; then
+    if test "x${with_alsa}" != x || test "x${with_alsa_include}" != x || test "x${with_alsa_lib}" != x; then
+      AC_MSG_WARN([alsa not used, so --with-alsa is ignored])
+    fi
+    ALSA_CFLAGS=
+    ALSA_LIBS=
+  else
+    ALSA_FOUND=no
+
+    if test "x${with_alsa}" = xno || test "x${with_alsa_include}" = xno || test "x${with_alsa_lib}" = xno; then
+      AC_MSG_ERROR([It is not possible to disable the use of alsa. Remove the --without-alsa option.])
+    fi
+
+    if test "x${with_alsa}" != x; then
+      ALSA_LIBS="-L${with_alsa}/lib -lasound"
+      ALSA_CFLAGS="-I${with_alsa}/include"
+      ALSA_FOUND=yes
+    fi
+    if test "x${with_alsa_include}" != x; then
+      ALSA_CFLAGS="-I${with_alsa_include}"
+      ALSA_FOUND=yes
+    fi
+    if test "x${with_alsa_lib}" != x; then
+      ALSA_LIBS="-L${with_alsa_lib} -lasound"
+      ALSA_FOUND=yes
+    fi
+    # Do not try pkg-config if we have a sysroot set.
+    if test "x$SYSROOT" = x; then
+      if test "x$ALSA_FOUND" = xno; then
+        PKG_CHECK_MODULES(ALSA, alsa, [ALSA_FOUND=yes], [ALSA_FOUND=no])
+      fi
+    fi
+    if test "x$ALSA_FOUND" = xno; then
+      AC_CHECK_HEADERS([alsa/asoundlib.h],
+          [
+            ALSA_FOUND=yes
+            ALSA_CFLAGS=-Iignoreme
+            ALSA_LIBS=-lasound
+            DEFAULT_ALSA=yes
+          ],
+          [ALSA_FOUND=no]
+      )
+    fi
+    if test "x$ALSA_FOUND" = xno; then
+      HELP_MSG_MISSING_DEPENDENCY([alsa])
+      AC_MSG_ERROR([Could not find alsa! $HELP_MSG])
+    fi
+  fi
+
+  AC_SUBST(ALSA_CFLAGS)
+  AC_SUBST(ALSA_LIBS)
+])