- unified snd_pcm_hw_params_* functions

- added backward compatibility for older non-compatible functions
- added --with-compat-rc3 to configure script to build library
  backwards compatible with 0.9.0rc3
- added symbol versioning like libc.so.6
  - ALSA_0.9      - alsa base
  - ALSA_0.9.0rc4 - first set of new functions (snd_pcm_hw_params_*)

configure.in

@@ -9,7 +9,7 @@ dnl remove API = c+1:0:0
 dnl *************************************************
 AC_CANONICAL_SYSTEM
 AM_INIT_AUTOMAKE(alsa-lib, 0.9.0rc3)
-eval LIBTOOL_VERSION_INFO="2:0:0"
+eval LIBTOOL_VERSION_INFO="3:0:0"
 dnl *************************************************
 AM_CONDITIONAL(INSTALL_M4, test -n "${ACLOCAL}")
 
@@ -109,6 +109,18 @@ case "$dir" in
 esac
 AC_DEFINE_UNQUOTED(DATADIR, "$dir", [directory containing ALSA configuration database])
 
+dnl Check for versioned symbols
+AC_MSG_CHECKING(for versioned symbols)
+AC_ARG_WITH(versioned,
+  [  --with-versioned=yes,no  shared library will (not) be compiled with versioned symbols],
+  versioned="$withval", versioned="yes")
+if test "$versioned" = "yes"; then
+  AC_DEFINE(VERSIONED_SYMBOLS)
+  AC_MSG_RESULT(yes)
+else
+  AC_MSG_RESULT(no)
+fi
+
 dnl Check for debug...
 AC_MSG_CHECKING(for debug)
 AC_ARG_WITH(debug,
@@ -121,9 +133,17 @@ else
   AC_MSG_RESULT(no)
 fi
 
+dnl Check for softfloat...
+AC_MSG_CHECKING(for softfloat)
 AC_ARG_WITH(softfloat,
   [  --with-softfloat        do you have floating point unit on this machine? (optional)],
-  [  AC_DEFINE(HAVE_SOFT_FLOAT, "1", [Avoid calculation in float])],)
+  [  AC_DEFINE(HAVE_SOFT_FLOAT, "1", [Avoid calculation in float])
+     softfloat=yes ],)
+if test "$softloat" = "yes" ; then
+  AC_MSG_RESULT(yes)
+else
+  AC_MSG_RESULT(no)
+fi
 
 dnl Check for architecture
 AC_MSG_CHECKING(for architecture)
@@ -156,6 +176,19 @@ arm*)
   ;;
 esac
 
+dnl Compatibility build, to be removed....
+AC_MSG_CHECKING(for 0.9.0rc3 compatibility build)
+AC_ARG_WITH(compat-rc3,
+  [  --with-compat-rc3       build library compatible with 0.9.0rc3],
+  [  AC_DEFINE(COMPATIBILITY_BUILD_RC3, "1", [0.9.0rc3 compatibility build])
+     comp_rc3="yes" ],)
+if test "$comp_rc3" = "yes" ; then
+  AC_MSG_RESULT(yes)
+else
+  AC_MSG_RESULT(no)
+fi
+AM_CONDITIONAL(COMPATIBILITY_BUILD_RC3, [test "x$comp_rc3" = xyes])
+
 AC_OUTPUT(Makefile doc/Makefile doc/pictures/Makefile include/Makefile src/Makefile \
           src/control/Makefile src/mixer/Makefile src/pcm/Makefile \
 	  src/rawmidi/Makefile src/timer/Makefile \