Re: zsh-3.1 development: dynamic modules

[Peter Stephenson <pws@ifh.de>]

Zoltan Hidvegi wrote:
> I have stared working on binary module support in zsh.  The preliminary
> version is almost usable.  I tested it on ELF Linux SunOS and Solaris and
> it seems to work.  Of course the most difficult part is to make it
> portable.  I looked at the perl sources for that but I not yet added
> everything which is there.

Success on IRIX 5.3 (which is ELF) using gcc (haven't tried the native
compiler yet) with the following minor changes: (1) gcc didn't like
the hacked-up version of the prototype ANSIfier, it doesn't strip
enough parentheses (2) -shared was required on linking the example
module to prevent it trying to find `main' etc.  I would suggest that
all ELF/gcc combinations use -shared; maybe it's always necessary with
gcc but I don't know how that interacts with ld in the general case.
I've also added what must be a missing $ before a GCC test a few lines
later.  autoconf's not working here at the moment so I haven't
actually used the patched configure.in.

*** Src/mod_example.c.old	Thu Nov  7 16:45:55 1996
--- Src/mod_example.c	Thu Nov  7 16:39:28 1996
***************
*** 31,37 ****
  
  #include <stdio.h>
  
! #define _(X) (X)
  
  typedef int (*HandlerFunc) _((char *, char **, char *, int));
  
--- 31,37 ----
  
  #include <stdio.h>
  
! #define _(X) X
  
  typedef int (*HandlerFunc) _((char *, char **, char *, int));
  
*** configure.in.old	Thu Nov  7 16:46:45 1996
--- configure.in	Thu Nov  7 17:00:50 1996
***************
*** 666,675 ****
    DL_EXT="${DL_EXT=so}"
    if test $zsh_cv_sys_elf = yes; then
      DLLD="${DLLD=$CC}"
    else
      DLLD="${DLLD=ld}"
    fi
!   if test -n "GCC"; then
      DLCFLAGS="${DLCFLAGS=-fpic}"
    else
      case "$host_os" in
--- 666,678 ----
    DL_EXT="${DL_EXT=so}"
    if test $zsh_cv_sys_elf = yes; then
      DLLD="${DLLD=$CC}"
+     if test -n "$GCC"; then
+       DLLDFLAGS="${DLLDFLAGS=-shared}"
+     fi
    else
      DLLD="${DLLD=ld}"
    fi
!   if test -n "$GCC"; then
      DLCFLAGS="${DLCFLAGS=-fpic}"
    else
      case "$host_os" in

-- 
Peter Stephenson <pws@ifh.de>       Tel: +49 33762 77366
WWW:  http://www.ifh.de/~pws/       Fax: +49 33762 77413
Deutches Electronen-Synchrotron --- Institut fuer Hochenergiephysik Zeuthen
DESY-IfH, 15735 Zeuthen, Germany.