Re: gnulib and automake

[Thomas Treichl]

John W. Eaton schrieb:
> | I would be surprised if this has any effect on the way .oct files are
> | created now, because they are constructed with libtool (as described
> | in the post that started this thread).  The configure script still has
> | the code that sets up Octave's old shared-library creation variables,
> | but they are no longer used to compile anything.  The plan is to
> | remove this code from the configure script once mkoctfile has also
> | been converted to use use libtool.
>
> Sorry, maybe I misunderstood what the problem was.  Looking at your
> patch (duh, should have done that before I replied the first time) it
> doesn't change the way .oct files are created, but does change the way
> they are opened, correct?  If so, then yes, please try this and see if
> it works to use the dlopen interface to open the .oct files that are
> created with libtool.  If so, then yes, I think this change should be
> applied.
>
> Thanks, and sorry for the confusion...

No problem, and yes, it was the idea to change the way *.oct files are loaded on 
MacOSX and not how *.oct files are created. And here are the good news: This 
change was one of the right things to do and it solved the problem for me. Here 
is the same short Octave session output:

  bash$ ./run-octave --quiet
  octave:1> which repmat
  `repmat' is a function from the file
  /Users/Thomas/Development/octave.am2/scripts/general/repmat.m
  octave:2> which reshape
  `reshape' is a built-in function
  octave:3> which cellfun
  `cellfun' is a function from the file
  /Users/Thomas/Development/octave.am2/src/DLD-FUNCTIONS/cellfun.oct
  octave:4> cellfun (@disp, {1,2,3}, 'UniformOutput', false)
  ans =
  {
    [1,1] =  1
    [1,2] =  2
    [1,3] =  3
  }

Attached I'm sending a simple "hg diff configure.ac >configure.ac.patch", I 
don't know if you prefer any other type of changeset in this stage, then let me 
know and I will send something else tomorrow.

Best regards

  Thomas

PS. I am very happy with the change to libtool because I still needed to add 
more "-llibs" flags to src/Makefile.in with the old way. Now libtool does all 
this work for me and these dependency problems all disappeared. This is great! 
Thanks.
diff -r 52a70c7d4935 configure.ac
--- a/configure.ac      Wed Oct 28 11:56:07 2009 -0400
+++ b/configure.ac      Thu Oct 29 22:27:17 2009 +0100
@@ -1594,10 +1594,15 @@
   ## Check for dyld first since OS X can have a non-standard libdl     
 
   save_LIBS="$LIBS"
-  AC_CHECK_HEADER(mach-o/dyld.h)
-  if test "$ac_cv_header_mach_o_dyld_h" = yes; then
-    dyld_api=true
-  else 
+  AC_ARG_WITH(mach-dyld,
+    [AS_HELP_STRING([--with-mach-dyld], [enable older Mach-O dyld interface])],
+    with_mach_dyld=yes, with_mach_dyld=$withval)
+  if test "$with_mach_dyld" = yes; then
+    AC_CHECK_HEADER(mach-o/dyld.h)
+    if test "$ac_cv_header_mach_o_dyld_h" = yes; then
+      dyld_api=true
+    fi
+  elif test "$dyld_api" = false; then
     AC_CHECK_LIB(dld, shl_load, [DL_LIBS=-ldld; LIBS="$LIBS $DL_LIBS"])
     AC_CHECK_FUNCS(shl_load shl_findsym)
     if test "$ac_cv_func_shl_load" = yes \