chiark / gitweb /
plugins/tracklength-gstreamer.c: Rewrite to use `GstDiscoverer'.
[disorder] / configure.ac
index 8b2e278c846cfade6f7aea4c389c718f569dc739..3b0429f35ac3dc5ce4014e9ef113f7c60d177451 100644 (file)
@@ -1,7 +1,7 @@
 # Process this file with autoconf to produce a configure script.
 #
 # This file is part of DisOrder.
-# Copyright (C) 2004-2009 Richard Kettlewell
+# Copyright (C) 2004-2014 Richard Kettlewell
 # Portions copyright (C) 2007 Ross Younger
 #
 # This program is free software: you can redistribute it and/or modify
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #
 
-AC_INIT([disorder], [4.3+], [richard+disorder@sfere.greenend.org.uk])
+AC_INIT([disorder], [5.1.1], [rjk@greenend.org.uk])
 AC_CONFIG_AUX_DIR([config.aux])
-AM_INIT_AUTOMAKE(disorder, [4.3+])
+AM_INIT_AUTOMAKE([foreign])
 AC_CONFIG_SRCDIR([server/disorderd.c])
 AM_CONFIG_HEADER([config.h])
+AC_CONFIG_MACRO_DIR([m4])
 
 # Find host type
 AC_CANONICAL_HOST
@@ -32,12 +33,15 @@ want_gtk=yes
 want_python=yes
 want_tests=yes
 want_server=yes
+want_gstdecode=whatever
 want_cgi=yes
 
 # APIs we want
 want_alsa=yes
 want_oss=yes
 want_coreaudio=yes
+want_pulseaudio=yes
+want_gstreamer=yes
 
 # By default we don't want gtk-osx.  But if you ask for --with-gtk-osx...
 #
@@ -46,6 +50,7 @@ want_coreaudio=yes
 #  - you will still need Fink (or something) for other libraries
 #  - if you wanted an application bundle you are out of luck
 #  - the menu bar is still in the main window (not at the top of the screen)
+#  - drag and drop doesn't work
 #
 # So it's still rather rough and ready.  But it does work...
 #
@@ -77,6 +82,10 @@ AC_ARG_WITH([alsa],
            [AS_HELP_STRING([--without-alsa],
                            [do not build with ALSA support])],
            [want_alsa=$withval])
+AC_ARG_WITH([pulseaudio],
+           [AS_HELP_STRING([--without-pulseaudio],
+                           [do not build with PulseAudio support])],
+           [want_pulseaudio=$withval])
 AC_ARG_WITH([oss],
            [AS_HELP_STRING([--without-oss],
                            [do not build with OSS support])],
@@ -93,10 +102,9 @@ AC_ARG_WITH([gtk-osx],
            [AS_HELP_STRING([--with-gtk-osx],
                            [use native GTK+ (OS X only)])],
            [want_gtkosx=$withval])
-AC_ARG_WITH([bits],
-            [AS_HELP_STRING([--with-bits=64],
-                            [request a 64-bit build (OS X only)])],
-            [BITS=$withval])
+AC_ARG_WITH([gstreamer],
+            [AS_HELP_STRING([--with-gstreamer], [select GStreamer version])],
+            [want_gstreamer=$withval])
 
 AC_MSG_CHECKING([for a known target platform])
 case "$host" in
@@ -111,15 +119,13 @@ case "$host" in
  ;;
 *linux* | *Linux* )
   AC_MSG_RESULT([Linux])
+  AC_DEFINE_UNQUOTED([PATH_PROC_MOUNTS],["/proc/mounts"],[path to kernel mount list])
   ;;
 *-apple-darwin* )
   AC_MSG_RESULT([Mac OS X])
-  AC_MSG_CHECKING([bitness])
-  if test "x$BITS" = "x"; then
-    BITS=32
-  fi
-  AC_MSG_RESULT([$BITS])
-  CC="$CC -m$BITS"
+  # AudioHardwareGetProperty is deprecated in 10.6, but it's still _there_,
+  # so we'll just turn off the warning.
+  CC="$CC -Wno-deprecated-declarations"
   if test $want_coreaudio = yes; then
     COREAUDIO="-framework CoreFoundation -framework CoreServices -framework CoreAudio"
   fi
@@ -163,7 +169,7 @@ case "$host" in
   # Look for a suitable version of libdb among the versions found in FreeBSD 7.0
   AC_CACHE_CHECK([looking for a libdb install],[rjk_cv_libdb],[
     rjk_cv_libdb="none"
-    for db in db43 db44 db45 db46; do
+    for db in db43 db44 db45 db47 db48; do
       if test -e /usr/local/lib/$db; then
         rjk_cv_libdb=$db
         break
@@ -174,6 +180,8 @@ case "$host" in
     LDFLAGS="${LDFLAGS} -L/usr/local/lib/$rjk_cv_libdb"
     CPPFLAGS="${CPPFLAGS} -isystem /usr/local/include/$rjk_cv_libdb"
   fi
+  # iconv needs bodging
+  AC_SUBST(LIBICONV,[-liconv])
   ;;
 * )
   AC_MSG_RESULT([unknown, winging it])
@@ -247,9 +255,14 @@ AC_ARG_WITH([python],
            [AS_HELP_STRING([--without-python],
                            [do not build Python support])],
            [want_python=$withval])
+AC_ARG_WITH([gstdecode],
+            [AS_HELP_STRING([--with-gstdecode],
+                           [require GStreamer-based decoder])],
+            [want_gstdecode=$withval])
 
 if test $want_server = no; then
   want_cgi=no
+  want_gstdecode=no
 fi
 
 #
@@ -277,7 +290,7 @@ fi
 if test $want_cgi = yes; then
   if test -z "$httpdir"; then
     AC_CACHE_CHECK([for httpd document root],[rjk_cv_httpdir],[
-      rjk_cv_httpdir="not found"
+      rjk_cv_httpdir="/usr/local/apache/htdocs"
       for dir in /var/www/html \
                  /var/www/htdocs \
                  /var/www/localhost/htdocs \
@@ -293,9 +306,6 @@ if test $want_cgi = yes; then
         fi
       done
     ])
-    if test "$rjk_cv_cgiexecdir" = "not found"; then
-      AC_MSG_ERROR([cannot identify httpd documentroot.  Set httpdir on configure command line])
-    fi
     httpdir="$rjk_cv_httpdir"
   fi
   if test ! -z "$cgidir"; then
@@ -304,7 +314,7 @@ if test $want_cgi = yes; then
   fi
   if test -z "$cgiexecdir"; then
     AC_CACHE_CHECK([for CGI directory],[rjk_cv_cgiexecdir],[
-      rjk_cv_cgiexecdir="not found"
+      rjk_cv_cgiexecdir="/usr/lib/cgi-bin"
       for dir in /usr/lib/cgi-bin \
                  /Library/WebServer/CGI-Executables \
                  /srv/www/cgi-bin \
@@ -320,9 +330,6 @@ if test $want_cgi = yes; then
         fi
       done
     ])
-    if test "$rjk_cv_cgiexecdir" = "not found"; then
-      AC_MSG_ERROR([cannot identify CGI install directory.  Set cgiexecdir on configure command line])
-    fi
     cgiexecdir="$rjk_cv_cgiexecdir"
   fi
 fi
@@ -333,14 +340,19 @@ if test -z "$pkghttpdir"; then
 fi
 AC_SUBST([pkghttpdir])
 
-subdirs="scripts lib"
+if test -z "$dochtmldir"; then
+  dochtmldir='$(docdir)/html'
+fi
+AC_SUBST([dochtmldir])
+
+subdirs="scripts common lib"
 if test $want_tests = yes; then
   subdirs="${subdirs} libtests"
 fi
 subdirs="${subdirs} clients doc examples debian"
 
 if test $want_server = yes; then
-  subdirs="${subdirs} server plugins driver sounds"
+  subdirs="${subdirs} server plugins sounds"
 fi
 if test $want_cgi = yes; then
   subdirs="${subdirs} cgi templates images"
@@ -391,9 +403,11 @@ AC_PATH_PROG([SENDMAIL],[sendmail],[none],[$PATH:/usr/sbin:/usr/lib])
 # Macs might have libraries under fink's root
 AC_PATH_PROG([FINK],[fink],[none],[$PATH:/sw/bin])
 if test "x$FINK" != xnone; then
+  # Find Fink prefix
   AC_CACHE_CHECK([fink install directory],[rjk_cv_finkprefix],[
     rjk_cv_finkprefix="`echo "$FINK" | sed 's,/bin/fink$,,'`"
   ])
+  # Add include and link paths
   finkdir="${rjk_cv_finkprefix}"
   finkbindir="${rjk_cv_finkprefix}/bin"
   CPPFLAGS="${CPPFLAGS} -isystem ${rjk_cv_finkprefix}/include/gc -isystem ${rjk_cv_finkprefix}/include"
@@ -401,27 +415,121 @@ if test "x$FINK" != xnone; then
     CPPFLAGS="${CPPFLAGS} -isystem ${rjk_cv_finkprefix}/include/db4"
   fi
   LDFLAGS="${LDFLAGS} -L${rjk_cv_finkprefix}/lib"
+  # Distinguish 32- and 64-bit fink
+  AC_CACHE_CHECK([whether Fink is 32-bit or 64-bit],[rjk_cv_finkbits],[
+    odata=`otool -v -h $finkbindir/dpkg`
+    case "$odata" in
+    *X86_64* )
+      rjk_cv_finkbits=64
+      ;;
+    *I386* )
+      rjk_cv_finkbits=32
+      ;;
+    * )
+      rjk_cv_finkbits=unknown
+      ;;
+    esac
+  ])
+  # Match Fink so we can use its libraries
+  case $rjk_cv_finkbits in
+  32 | 64 )
+    CC="$CC -m$rjk_cv_finkbits"
+    ;;
+  esac
 else
   finkbindir=""
 fi
 AC_SUBST([finkdir])
 AC_SUBST([finkbindir])
 
+# Checks for packages.
+case $want_gstdecode,$want_gstreamer in
+  yes,no) AC_MSG_ERROR([gstdecode requires GStreamer]) ;;
+  whatever,no) want_gstdecode=no ;;
+  no,*) want_gstreamer=no ;;
+  *,yes) want_gstreamer="1.0 0.10" ;;
+esac
+
+AH_TEMPLATE([HAVE_GSTREAMER_0_10],
+    [Define if building against GStreamer 0.10])
+AH_TEMPLATE([HAVE_GSTREAMER_1_0],
+    [Define if building against GStreamer 1.0])
+
+mdw_gstreamer_version=nil
+for i in $want_gstreamer; do
+  case $i in
+    0.10) v=0.10 V=0_10 ;;
+    1.0) v=1.0 V=1_0 ;;
+    *) AC_MSG_ERROR([unrecognized GStreamer version]) ;;
+  esac
+  PKG_CHECK_MODULES([GSTREAMER],
+      [gstreamer-$v gstreamer-app-$v gstreamer-audio-$v gstreamer-pbutils-$v],
+      [have_gstreamer=$v], [have_gstreamer=no])
+  case $have_gstreamer in no) continue ;; esac
+  AC_DEFINE_UNQUOTED([HAVE_GSTREAMER_$V], [1])
+  mdw_gstreamer_version=$v
+  break
+done
+
+case $want_gstdecode,$have_gstreamer,$have_gst_plugins_base in
+  whatever,no,* | whatever,*,no)
+    want_gstdecode=no
+    ;;
+  yes,no,* | yes,*,no)
+    case $have_gstreamer in
+      no) missing_libraries="$missing_libraries gstreamer" ;;
+    esac
+    ;;
+  *)
+    want_gstdecode=yes
+    ;;
+esac
+
+mdw_SAVE_CFLAGS=$CFLAGS
+mdw_SAVE_LIBS=$LIBS
+CFLAGS="$CFLAGS $GSTREAMER_CFLAGS"
+LIBS="$LIBS $GSTREAMER_LIBS"
+AC_CHECK_FUNCS([gst_audio_info_from_caps])
+CFLAGS=$mdw_SAVE_CFLAGS
+LIBS=$mdw_SAVE_LIBS
+
 # Checks for libraries.
 # We save up a list of missing libraries that we can't do without
 # and report them all at once.
 AC_CHECK_LIB(gc, GC_malloc,            [AC_SUBST(LIBGC,[-lgc])],
             [missing_libraries="$missing_libraries libgc"])
+mdw_SAVE_LIBS=$LIBS
+LIBS="$LIBS $LIBGC"
+AC_CHECK_FUNCS(GC_get_all_interior_pointers)
+LIBS=$mdw_SAVE_LIBS
 AC_CHECK_LIB(gcrypt, gcry_md_open,
              [AC_SUBST(LIBGCRYPT,[-lgcrypt])],
             [missing_libraries="$missing_libraries libgcrypt"])
-AC_CHECK_LIB(pcre, pcre_compile,
-            [AC_SUBST(LIBPCRE,[-lpcre])],
-            [missing_libraries="$missing_libraries libpcre"])
+PKG_CHECK_MODULES([PCRE2], [libpcre2-8], [have_pcre2=yes], [have_pcre2=no])
+case $have_pcre2 in
+  yes)
+    CFLAGS="$CFLAGS $PCRE2_CFLAGS" LIBPCRE=$PCRE2_LIBS
+    AC_DEFINE([HAVE_LIBPCRE2], [1], [Define if building with libpcre2.])
+    ;;
+  no)
+    AC_CHECK_LIB(pcre, pcre_compile,
+                 [AC_SUBST(LIBPCRE,[-lpcre])],
+                 [missing_libraries="$missing_libraries libpcre"])
+    ;;
+esac
 if test $want_alsa = yes; then
   AC_CHECK_LIB([asound], [snd_pcm_open],
                [AC_SUBST(LIBASOUND,[-lasound])])
 fi
+if test $want_pulseaudio = yes; then
+  PKG_CHECK_MODULES([PULSEAUDIO],[libpulse],
+                    [AC_DEFINE([HAVE_PULSEAUDIO],[1],[define to 1 for PulseAudio support])],
+                    [missing_libraries="$missing_libraries libpulse"])
+  PKG_CHECK_MODULES([PULSEAUDIO_SIMPLE],[libpulse-simple],,
+                    [missing_libraries="$missing_libraries libpulse-simple"])
+fi
+AC_CHECK_LIB([samplerate],[src_new],
+             [AC_SUBST([LIBSAMPLERATE],[-lsamplerate])])
 if test $want_server = yes; then
   RJK_CHECK_LIB(db, db_create, [#include <db.h>],
               [AC_SUBST(LIBDB,[-ldb])],
@@ -436,9 +544,6 @@ if test $want_server = yes; then
   AC_CHECK_LIB(mad, mad_stream_init,
               [AC_SUBST(LIBMAD,[-lmad])],
               [missing_libraries="$missing_libraries libmad"])
-  AC_CHECK_LIB([ao], [ao_initialize],
-              [AC_SUBST(LIBAO,[-lao])],
-              [missing_libraries="$missing_libraries libao"])
   AC_CHECK_LIB([FLAC], [FLAC__stream_decoder_new],
               [AC_SUBST(LIBFLAC,[-lFLAC])],
               [missing_libraries="$missing_libraries libFLAC"])
@@ -491,7 +596,8 @@ fi
 if test $want_coreaudio = yes; then
   AC_CHECK_HEADERS([CoreAudio/AudioHardware.h])
 fi
-AC_CHECK_HEADERS([inttypes.h])
+AC_CHECK_HEADERS([inttypes.h sys/time.h sys/socket.h netinet/in.h \
+                  arpa/inet.h sys/un.h netdb.h pwd.h langinfo.h])
 # We don't bother checking very standard stuff
 # Compilation will fail if any of these headers are missing, so we
 # check for them here and fail early.
@@ -499,21 +605,30 @@ if test $want_server = yes; then
   AC_CHECK_HEADERS([db.h],[:],[
     missing_headers="$missing_headers $ac_header"
   ])
-  AC_CHECK_HEADERS([FLAC/file_decoder.h])
 fi
 AC_CHECK_HEADERS([dlfcn.h gcrypt.h \
                 getopt.h iconv.h langinfo.h \
-                pcre.h sys/ioctl.h \
+                sys/ioctl.h \
                 syslog.h unistd.h],[:],[
   missing_headers="$missing_headers $ac_header"
 ])
+case $have_pcre2 in
+  no)
+    AC_CHECK_HEADERS([pcre.h], [:],
+        [missing_headers="$missing_headers $ac_header"])
+    ;;
+esac
+AC_CHECK_HEADERS([samplerate.h])
 
 if test ! -z "$missing_headers"; then
   AC_MSG_ERROR([missing headers:$missing_headers])
 fi
 
 # We require that libpcre support UTF-8
-RJK_REQUIRE_PCRE_UTF8([-lpcre])
+case $have_pcre2 in
+  yes) RJK_REQUIRE_PCRE2_UTF8([$PCRE2_CFLAGS], [$PCRE2_LIBS]) ;;
+  no) RJK_REQUIRE_PCRE_UTF8([-lpcre]) ;;
+esac
 
 # Checks for typedefs, structures, and compiler characteristics.
 AC_C_CONST
@@ -523,29 +638,23 @@ AC_C_BIGENDIAN
 AC_CHECK_TYPES([struct sockaddr_in6],,,[AC_INCLUDES_DEFAULT
 #include <netinet/in.h>])
 
+# Figure out how we'll check for devices being mounted and unmounted
+AC_CACHE_CHECK([for list of mounted filesystems],[rjk_cv_mtab],[
+  if test -e /etc/mtab; then
+    rjk_cv_mtab=/etc/mtab
+  else
+    rjk_cv_mtab=none
+  fi
+])
+if test $rjk_cv_mtab != none; then
+  AC_DEFINE_UNQUOTED([PATH_MTAB],["$rjk_cv_mtab"],[path to file containing mount list])
+fi
+
 # enable -Werror when we check for certain characteristics:
 
 old_CFLAGS="${CFLAGS}"
 CFLAGS="${CFLAGS} $gcc_werror"
-AC_CHECK_TYPES([long long,uint32_t,uint8_t,intmax_t,uintmax_t])
-
-# Some GCC invocations warn for converting function pointers to void *.
-# This is fair enough, as it's technically forbidden, but we use dlsym()
-# which can pretty much only exist if object and function pointers are
-# interconvertable.  So we disable -Werror if need be.
-if test ! -z "$gcc_werror"; then
-  AC_CACHE_CHECK([whether function pointers can be converted to void * without a warning],
-                [rjk_cv_function_pointer_cast],[
-    AC_COMPILE_IFELSE([AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT
-  void somefunction(void);],
-                     [(void *)somefunction])],
-                     [rjk_cv_function_pointer_cast=yes],
-                     [rjk_cv_function_pointer_cast=no])])
-  if test $rjk_cv_function_pointer_cast = no; then
-    gcc_werror=""
-  fi
-fi
-
+AC_CHECK_TYPES([long long,uint32_t,uint16_t,uint8_t,intmax_t,uintmax_t])
 CFLAGS="${old_CFLAGS}"
 
 # gcrypt maintainers keep changing everything.  Design your interface
@@ -613,14 +722,21 @@ AC_CHECK_FUNCS([fdatasync],[:],[
 if test ! -z "$missing_functions"; then
   AC_MSG_ERROR([missing functions:$missing_functions])
 fi
+# dlsym will do if dlfunc not available
+AC_CHECK_FUNCS([dlfunc],[:],[
+  AC_DEFINE([dlfunc],[dlsym],[define dlfunc to dlsym if not available])
+])
+if test ! -z "$missing_functions"; then
+  AC_MSG_ERROR([missing functions:$missing_functions])
+fi
 
 # Functions we can take or leave
-AC_CHECK_FUNCS([fls])
+AC_CHECK_FUNCS([fls getfsstat closesocket])
 
 if test $want_server = yes; then
   # <db.h> had better be version 3 or later
   AC_CACHE_CHECK([db.h version],[rjk_cv_db_version],[
-    AC_PREPROC_IFELSE([
+    AC_PREPROC_IFELSE([AC_LANG_PROGRAM([
                       #include <db.h>
                       #ifndef DB_VERSION_MAJOR
                       # error cannot determine db version
@@ -631,16 +747,16 @@ if test $want_server = yes; then
                       #if DB_VERSION_MAJOR == 4 && DB_VERSION_MINOR <= 2
                       # error inadequate db version
                       #endif
-                     ],
+                     ],[])],
                      [rjk_cv_db_version=ok],
                      [rjk_cv_db_version=inadequate])
     if test $rjk_cv_db_version = ok; then
-      AC_PREPROC_IFELSE([
+      AC_PREPROC_IFELSE([AC_LANG_PROGRAM([
                          #include <db.h>
                          #if DB_VERSION_MAJOR == 4 && DB_VERSION_MINOR == 6
                          # error http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=510270
                          #endif
-                        ],
+                        ],[])],
                         [rjk_cv_db_version=ok],
                         [rjk_cv_db_version=toxic])
     fi
@@ -661,6 +777,27 @@ AM_CONDITIONAL([SERVER], [test x$want_server = xyes])
 if test $want_gtk = yes; then
   AC_DEFINE([WITH_GTK], [1], [define if using GTK+])
 fi
+AM_CONDITIONAL([GTK], [test x$want_gtk = xyes])
+AM_CONDITIONAL([GSTDECODE], [test x$want_gstdecode = xyes])
+
+# Some GCC invocations warn for converting function pointers to void *.
+# This is fair enough, as it's technically forbidden, but we use dlsym()
+# which can pretty much only exist if object and function pointers are
+# interconvertable.  So we disable -Werror if need be.
+if test ! -z "$gcc_werror" && test "$ac_cv_func_dlfunc" != yes; then
+  CFLAGS="${CFLAGS} $gcc_werror"
+  AC_CACHE_CHECK([whether function pointers can be converted to void * without a warning],
+                [rjk_cv_function_pointer_cast],[
+    AC_COMPILE_IFELSE([AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT
+  void somefunction(void);],
+                     [(void *)somefunction])],
+                     [rjk_cv_function_pointer_cast=yes],
+                     [rjk_cv_function_pointer_cast=no])])
+  if test $rjk_cv_function_pointer_cast = no; then
+    gcc_werror=""
+  fi
+  CFLAGS="${old_CFLAGS}"
+fi
 
 if test "x$GCC" = xyes; then
   # We need LLONG_MAX and annoyingly GCC doesn't always give it to us
@@ -691,13 +828,13 @@ if test "x$GCC" = xyes; then
     if test $GCC = yes; then
       CC="$CC -Wall -Werror"
     fi
-    AC_COMPILE_IFELSE([
+    AC_COMPILE_IFELSE([AC_LANG_PROGRAM([
       static int x(char *f) {
        return *f;
       }
       int z(const char *g) {
        return x((char *)g);
-      }],
+      }],[])],
       [rjk_cv_pr29478=no],
       [rjk_cv_pr29478=yes]
     )
@@ -713,11 +850,11 @@ if test "x$GCC" = xyes; then
     if test $GCC = yes; then
       CC="$CC -Wreturn-type -Werror"
     fi
-    AC_COMPILE_IFELSE([
+    AC_COMPILE_IFELSE([AC_LANG_PROGRAM([],[
       static void *threadfn(void) {
         for(;;)
           ;
-      }],
+      }],[])],
       [rjk_cv_gcc44_stupidity=no],
       [rjk_cv_gcc44_stupidity=yes])
     CC="$old_CC"
@@ -727,7 +864,7 @@ if test "x$GCC" = xyes; then
   fi
 
   # a reasonable default set of warnings
-  CC="${CC} -Wall -W -Wpointer-arith -Wbad-function-cast \
+  CC="${CC} -Wall -W -Wpointer-arith \
        -Wwrite-strings -Wmissing-prototypes \
        -Wmissing-declarations -Wnested-externs"
 
@@ -799,15 +936,16 @@ AH_BOTTOM([#ifdef __GNUC__
 AC_CONFIG_FILES([Makefile
                 images/Makefile
                 scripts/Makefile
+                common/Makefile
                 lib/Makefile
                 server/Makefile
                 cgi/Makefile
                 clients/Makefile
                 disobedience/Makefile
+                disobedience/manual/Makefile
                 doc/Makefile
                 templates/Makefile
                 plugins/Makefile
-                driver/Makefile
                 debian/Makefile
                 sounds/Makefile
                 python/Makefile
@@ -816,12 +954,25 @@ AC_CONFIG_FILES([Makefile
                 tests/Makefile])
 AC_OUTPUT
 
+# A hack: communicate our selection of GStreamer version back to the
+# Debian packaging machinery so that it can build the right dependencies.
+echo '### extra control substitutions for Debian' >debian/substvars.auto.new
+case $mdw_gstreamer_version in
+  nil) ;;
+  *) echo >>debian/substvars.auto.new \
+        "disorder:GstVersion=gstreamer$mdw_gstreamer_version" ;;
+esac
+mv debian/substvars.auto.new debian/substvars.auto
+
 if test $GCC = yes && test "$gcc_werror" = ''; then
   AC_MSG_WARN([building without -Werror])
 fi
 if test $want_python = no; then
   AC_MSG_WARN([cannot run the test suit without Python])
 fi
+if test $want_server = yes && test "$ac_cv_lib_samplerate_src_new" != yes; then
+  AC_MSG_WARN([libsamplerate will be required in a future version])
+fi
 
 # Local Variables:
 # indent-tabs-mode:nil