AMD: add octave support

AMD/MATLAB/amd_demo.m

@@ -18,6 +18,8 @@
 % First, print the help information for AMD
 help amd2
 
+have_octave = (exist ('OCTAVE_VERSION', 'builtin') == 5) ;
+
 % Get the Harwell/Boeing can_24 matrix.
 
 load can_24
@@ -56,7 +58,11 @@
 title ('Cholesky factor, L') ;
 
 subplot (2,2,4) ;
-treeplot (parent) ;
+if (have_octave)
+    treeplot (parent') ;
+else
+    treeplot (parent) ;
+end
 title ('elimination tree') ;
 
 % results from symbfact

AMD/MATLAB/amd_make.m

@@ -10,15 +10,24 @@
 % Iain S. Duff.  All Rights Reserved.
 % SPDX-License-Identifier: BSD-3-clause
 
+have_octave = (exist ('OCTAVE_VERSION', 'builtin') == 5) ;
+
 details = 0 ;	    % 1 if details of each command are to be printed
 
 d = '' ;
-if (~isempty (strfind (computer, '64')))
+
+if (~isempty (strfind (computer, '64')) && ~have_octave)
     d = '-largeArrayDims' ;
 end
 
-% MATLAB 8.3.0 now has a -silent option to keep 'mex' from burbling too much
-if (~verLessThan ('matlab', '8.3.0'))
+if (have_octave)
+    d = ['-DOCTAVE ' d] ;
+end
+
+if (have_octave)
+    d = ['--silent ' d] ;
+elseif (~verLessThan ('matlab', '8.3.0'))
+    % MATLAB 8.3.0 now has a -silent option to keep 'mex' from burbling too much
     d = ['-silent ' d] ;
 end
 

AMD/MATLAB/amd_mex.c

@@ -28,7 +28,10 @@
 
 #include "amd.h"
 #include "mex.h"
+
+#ifndef OCTAVE
 #include "matrix.h"
+#endif
 
 void mexFunction
 (