Locate and position the current Audacity source code, and clear a variety of old junk out of the way into junk-branches

m4/audacity_checklib_liblrdf.m4

@@ -0,0 +1,58 @@
+dnl Add Audacity / LRDF license?
+dnl
+dnl Please increment the serial number below whenever you alter this macro
+dnl for the benefit of automatic macro update systems
+# audacity_checklib_liblrdf.m4 serial 1
+
+AC_DEFUN([AUDACITY_CHECKLIB_LIBLRDF], [
+   AC_ARG_WITH(liblrdf,
+               [AS_HELP_STRING([--with-liblrdf],
+                               [use liblrdf for categorisation of LADSPA plugins ])],
+               LIBLRDF_ARGUMENT=$withval,
+               LIBLRDF_ARGUMENT="unspecified")
+
+   if false ; then
+      AC_DEFINE(USE_LIBLRDF, 1,
+                [Define if liblrdf (metadata for LADSPA plugins) support should be enabled])
+   fi
+
+   dnl Check for a system copy of liblrdf to use. I've only tested with 
+   dnl version 0.4.0, this requirement might be relaxed in the future if
+   dnl someone else has it working with an earlier version.
+
+   PKG_CHECK_MODULES(LIBLRDF, lrdf >= 0.4.0,
+                     liblrdf_available_system="yes",
+                     liblrdf_available_system="no")
+
+   LIBLRDF_SYSTEM_AVAILABLE="no"
+   if test "x$liblrdf_available_system" = "xyes" ; then
+      LIBLRDF_SYSTEM_AVAILABLE="yes"
+      LIBLRDF_SYSTEM_LIBS="$LIBLRDF_LIBS"
+      LIBLRDF_SYSTEM_CXXFLAGS="$LIBLRDF_CFLAGS"
+      LIBLRDF_SYSTEM_CPPSYMBOLS="USE_LIBLRDF"
+      AC_MSG_NOTICE([liblrdf available as system library])
+   fi
+   if test "x$LIBLRDF_SYSTEM_AVAILABLE" = "xno" ; then
+      AC_MSG_NOTICE([liblrdf NOT available as system library])
+   fi
+
+   dnl see if liblrdf is available locally
+   AC_CHECK_FILE(${srcdir}/lib-src/liblrdf/lrdf.h,
+                 lrdf_h_found="yes",
+                 lrdf_h_found="no")
+
+   if test "x$lrdf_h_found" = "xyes" ; then
+      LIBLRDF_LOCAL_AVAILABLE="yes"
+      LIBLRDF_LOCAL_LIBS="liblrdf.a"
+      LIBLRDF_LOCAL_CXXFLAGS='-I$(top_srcdir)/lib-src/liblrdf'
+      LIBLRDF_LOCAL_CPPSYMBOLS="USE_LIBLRDF"
+      if test ! -f lib-src/liblrdf/Makefile ; then
+         LIBLRDF_LOCAL_CONFIG_SUBDIRS="lib-src/liblrdf"
+      fi
+      AC_MSG_NOTICE([liblrdf is available in the local tree])
+   else
+      LIBLRDF_LOCAL_AVAILABLE="no"
+      AC_MSG_NOTICE([liblrdf is NOT available in the local tree])
+   fi
+])
+