diff -urN swftools-0.9.1.org/m4/fftw.m4 swftools-0.9.1/m4/fftw.m4
--- swftools-0.9.1.org/m4/fftw.m4	1970-01-01 01:00:00.000000000 +0100
+++ swftools-0.9.1/m4/fftw.m4	2011-06-26 18:46:01.834298018 +0200
@@ -0,0 +1,52 @@
+AC_DEFUN([RFX_CHECK_FFTW],
+[
+  OLDCPPFLAGS="${CPPFLAGS}"
+  OLDLIBS="${LIBS}"
+  	
+  AC_CHECK_LIB(fftw3f, fftwf_plan_dft_r2c_2d, [HAVE_LIBFFTW3=1],)
+  AC_CHECK_HEADERS(fftw3.h,[HAVE_FFTW3_H=1])
+  
+  if test "x${HAVE_LIBFFTW3}" != "x";then
+    if test "x${HAVE_FFTW3_H}" != "x";then
+      HAVE_FFTW3=1
+    fi
+  fi
+  
+  if test "x${HAVE_FFTW3}" = "x1"; then 
+    LIBS="$LIBS -lfftw3f"
+    AC_MSG_CHECKING([whether we can compile the fftw3 test program])
+  
+    cat > conftest.c << EOF
+    #include <fftw3.h>
+    
+    int main()
+    {
+	char*data = fftw_malloc(sizeof(fftwf_complex)*600*800);
+    	fftwf_plan plan = fftwf_plan_dft_2d(600, 800, (fftwf_complex*)data, (fftwf_complex*)data, FFTW_FORWARD, FFTW_ESTIMATE);
+	plan = fftwf_plan_dft_r2c_2d(600, 800, (float*)data, (fftwf_complex*)data, FFTW_ESTIMATE);
+	plan = fftwf_plan_dft_c2r_2d(600, 800, (fftwf_complex*)data, (float*)data, FFTW_ESTIMATE);
+    	fftwf_execute(plan);
+    	fftwf_destroy_plan(plan);
+    }
+EOF
+    
+    ac_link='$CC $CPPFLAGS $CFLAGS conftest.c $LDFLAGS $LIBS -o conftest${ac_exeext}'
+    if { (eval echo fftw3.m4:71: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+      AC_MSG_RESULT(yes)
+      AC_DEFINE([HAVE_FFTW3], [1], [Define if fftw3 is available])
+    else
+      echo "configure: failed program was:" >&5
+      cat conftest.c >&5
+      HAVE_FFTW3=0
+      AC_MSG_RESULT(no)
+    fi
+    rm -f conftest*
+  fi
+  
+  # if the above didn't work out, reset all changes to the compiler variables.
+  if test "x${HAVE_FFTW3}" "!=" "x1"; then 
+      CPPFLAGS=$OLDCPPFLAGS
+      LIBS=$OLDLIBS
+  fi 
+])
+
diff -urN swftools-0.9.1.org/m4/lowercase.m4 swftools-0.9.1/m4/lowercase.m4
--- swftools-0.9.1.org/m4/lowercase.m4	1970-01-01 01:00:00.000000000 +0100
+++ swftools-0.9.1/m4/lowercase.m4	2011-06-26 18:46:01.834298018 +0200
@@ -0,0 +1,17 @@
+AC_DEFUN([RFX_CHECK_LOWERCASE_UPPERCASE],
+[
+AC_MSG_CHECKING([whether the filesystem normalizes file names])
+
+echo test1 > __abcdefghijklmnopqrstuvwxyz.txt
+echo test2 > __ABCDEFGHIJKLMNOPQRSTUVWXYZ.txt
+if test `cat __abcdefghijklmnopqrstuvwxyz.txt` = "test2";then
+    AC_MSG_RESULT(yes)
+    AC_DEFINE([LOWERCASE_UPPERCASE], [1], [Define if the file system is case invariant])
+else
+    AC_MSG_RESULT(no)
+fi
+
+rm -f __abcdefghijklmnopqrstuvwxyz.txt
+rm -f __ABCDEFGHIJKLMNOPQRSTUVWXYZ.txt
+])
+
diff -urN swftools-0.9.1.org/m4/ruby.m4 swftools-0.9.1/m4/ruby.m4
--- swftools-0.9.1.org/m4/ruby.m4	1970-01-01 01:00:00.000000000 +0100
+++ swftools-0.9.1/m4/ruby.m4	2011-06-26 18:46:01.834298018 +0200
@@ -0,0 +1,94 @@
+AC_DEFUN([RFX_CHECK_RUBY],
+[
+AC_PATH_PROG([RUBY], [ruby],,)
+
+RUBY_CPPFLAGS=""
+RUBY_LDFLAGS=""
+RUBY_LIBS=""
+
+rubylib=ruby18
+
+AC_MSG_CHECKING([for ruby's include directory])
+if test "x$RUBY" '!=' "x";then
+    rubyinc=`$RUBY -e 'require "rbconfig";puts Config::expand(Config::CONFIG.send("\x5b\x5d", "archdir"))' 2>/dev/null`
+    if test -d $rubyinc;then
+	AC_MSG_RESULT($rubyinc)
+
+	# If we got a sensible archdir, we also ask ruby to supply us with CPPFLAGS
+	# and LDFLAGS.
+	AC_MSG_CHECKING([for ruby's cpp flags])
+	rubycpp=`$RUBY -e 'require "rbconfig";puts Config::expand(Config::CONFIG.send("\x5b\x5d", "CPPFLAGS"))' 2>/dev/null`
+	AC_MSG_RESULT($rubycpp)
+	
+	AC_MSG_CHECKING([for ruby's ld flags])
+	rubyld=`$RUBY -e 'require "rbconfig";puts Config::expand(Config::CONFIG.send("\x5b\x5d", "LIBRUBYARG_SHARED"))' 2>/dev/null`
+	rubyld2=`$RUBY -e 'require "rbconfig";v=Config::expand(Config::CONFIG.send("\x5b\x5d", "LIBRUBY_LDSHARED"));puts v.gsub(/^g?cc/,"")' 2>/dev/null`
+	AC_MSG_RESULT("$rubyld $rubyld2")
+	
+	AC_MSG_CHECKING([for ruby library name])
+	rubylib=`$RUBY -e 'require "rbconfig";puts Config::expand(Config::CONFIG.send("\x5b\x5d", "RUBY_SO_NAME"))' 2>/dev/null`
+	AC_MSG_RESULT($rubylib)
+	
+	RUBY_CPPFLAGS="$rubycpp -I$rubyinc $RUBY_CPPFLAGS"
+	RUBY_LDFLAGS="$rubyld $rubyld2 $RUBY_LDFLAGS"
+	RUBY_INSTALLDIR="$rubyinc"
+    else
+	AC_MSG_RESULT('unknown')
+    fi
+else
+    AC_MSG_RESULT('unknown')
+fi
+
+#OLDLDFLAGS="$LDFLAGS"
+#LDFLAGS="$LDFLAGS $RUBY_LDFLAGS"
+#AC_CHECK_LIB($rubylib, rb_define_method, HAVE_RUBY_LIB=1,)
+#LDFLAGS="$OLDLDFLAGS"
+
+OLDCPPFLAGS="$CPPFLAGS"
+CPPFLAGS="$CPPFLAGS $RUBY_CPPFLAGS"
+AC_CHECK_HEADERS([ruby.h],[HAVE_RUBY_H=1])
+CPPFLAGS="$OLDCPPFLAGS"
+
+AC_MSG_CHECKING([whether we should compile the ruby module])
+if test "x${HAVE_RUBY_H}" '!=' "x";then
+    #RUBY_LIBS="$RUBY_LIBS -l$rubylib"
+
+    cat > conftest.c << EOF
+#include <ruby.h>
+static VALUE foobar;
+VALUE foobar_set_foo(VALUE module, VALUE _key, VALUE _value)
+{
+    return Qnil;
+}
+int Init_foobar()
+{
+    foobar = rb_define_module("foobar");
+    rb_define_module_function(foobar, "set_foo", foobar_set_foo, 2);
+    return 0;
+}
+int main() {return 0;}
+EOF
+    ac_link='$CC $SHARED $CPPFLAGS $RUBY_CPPFLAGS $CFLAGS conftest.c $LDFLAGS $RUBY_LDFLAGS $LIBS $RUBY_LIBS -o conftest${SLEXT}'
+    if { (eval echo ruby.m4: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${SLEXT}; then
+	RUBY_OK=yes
+    else
+        echo "configure: failed program was:" >&5
+        cat conftest.c >&5
+    fi
+    rm -f conftest*
+fi
+
+if test "x${RUBY_OK}" '=' "xyes"; then 
+    AC_MSG_RESULT([yes])
+    AC_SUBST(RUBY_LIBS)
+    AC_SUBST(RUBY_CPPFLAGS)
+    AC_SUBST(RUBY_LDFLAGS)
+    AC_SUBST(RUBY_INSTALLDIR)
+else
+    AC_MSG_RESULT([no])
+    RUBY_CPPFLAGS=""
+    RUBY_LDFLAGS=""
+    RUBY_LIBS=""
+    RUBY_INSTALLDIR=""
+fi
+])