Zsh doesn't compile correctly out of the box for HPUX

Zsh doesn't compile correctly out of the box for HPUX

[Nathan Peirce]

It does compile, but zle doesn't function correctly unless you have
the LIBS line in the Makefile look like this:

   LIBS            = -lnsl -lHcurses -lcurses -lm  -lc

Notice that the Hcurses library has to be used instead of the default
curses.  What happens is the backspace doesn't work.  When you hit
backspace nothing happens (and in fact if stty is set to do a
backspace-space-backspace it actually just goes forward a space
instead of backwards).

I've had this problem dating back to HPUX 10.20 (and now on 11.11).

It would be nice to have a fix in configure or a note added to
MACHINES

Thanks zsh-workers

-- 
Nathan Peirce
Hewlett Packard
System VLSI Technology Division
Phone: 970-898-7928	
Email: nathan@fc.hp.com

Re: Zsh doesn't compile correctly out of the box for HPUX

[Peter Stephenson]

Nathan Peirce wrote:
> It does compile, but zle doesn't function correctly unless you have
> the LIBS line in the Makefile look like this:
> 
>    LIBS            = -lnsl -lHcurses -lcurses -lm  -lc
> 
> Notice that the Hcurses library has to be used instead of the default
> curses.

Is that really instead of (not in addition to)?  In that case, and
assuming Hcurses is HPUX-specific, I would think we can fix this by
changing

[case "$host_os" in
  hpux10.*|hpux11.*|solaris*)
      termcap_curses_order="curses ncurses termcap" ;;
  *)             termcap_curses_order="termcap curses ncurses" ;;
esac]

to 

[case "$host_os" in
  hpux10.*|hpux11.*|solaris*)
      termcap_curses_order="Hcurses curses ncurses termcap" ;;
  *)             termcap_curses_order="termcap curses ncurses" ;;
esac]

in the configure test.

-- 
Peter Stephenson <pws@csr.com>                  Software Engineer
CSR Ltd., Science Park, Milton Road,
Cambridge, CB4 0WH, UK                          Tel: +44 (0)1223 692070


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Re: Zsh doesn't compile correctly out of the box for HPUX

[Nathan Peirce]

I don't know much about curses libraries.  I did see this comment on
an HP-UX transition website:

"Hcurses library - HP-UX curses was
replaced with X/Open curses (NcNs401)

These curses interfaces are HP proprietary interfaces. The
use of these interfaces is strongly discouraged and may not
be portable to future implementations of HP-UX. There will
not be a 64-bit version of the curses
library."

But whoever is compiling the regular X/Open cursese for HPUX is doing it
wrong because it has the backspace problem.  So as long as Hcurses is
available, its use is a good workaround to the backspace problem.


On 12 February 2003, Peter Stephenson writes:
 > Nathan Peirce wrote:
 > > It does compile, but zle doesn't function correctly unless you have
 > > the LIBS line in the Makefile look like this:
 > > 
 > >    LIBS            = -lnsl -lHcurses -lcurses -lm  -lc
 > > 
 > > Notice that the Hcurses library has to be used instead of the default
 > > curses.
 > 
 > Is that really instead of (not in addition to)?  In that case, and
 > assuming Hcurses is HPUX-specific, I would think we can fix this by
 > changing
 > 
 > [case "$host_os" in
 >   hpux10.*|hpux11.*|solaris*)
 >       termcap_curses_order="curses ncurses termcap" ;;
 >   *)             termcap_curses_order="termcap curses ncurses" ;;
 > esac]
 > 
 > to 
 > 
 > [case "$host_os" in
 >   hpux10.*|hpux11.*|solaris*)
 >       termcap_curses_order="Hcurses curses ncurses termcap" ;;
 >   *)             termcap_curses_order="termcap curses ncurses" ;;
 > esac]
 > 
 > in the configure test.
 > 



-- 
Nathan Peirce
Hewlett Packard
System VLSI Technology Division
Phone: 970-898-7928	
Email: nathan@fc.hp.com

Re: Zsh doesn't compile correctly out of the box for HPUX

[Peter Stephenson]

Nathan Peirce wrote:
> But whoever is compiling the regular X/Open cursese for HPUX is doing it
> wrong because it has the backspace problem.  So as long as Hcurses is
> available, its use is a good workaround to the backspace problem.

Here's a patch to the latest source; it's in a different file in 4.0 but
the patch itself should be similar.  Again, I'm assuming that -lHcurses
can replace -lcurses or we need to be cleverer.

The MACHINES entry includes some relevant stuff I was already
accumulating, I can't remember if I posted it.

Index: zshconfig.ac
===================================================================
RCS file: /cvsroot/zsh/zsh/zshconfig.ac,v
retrieving revision 1.30
diff -u -r1.30 zshconfig.ac
--- zshconfig.ac	30 Jan 2003 15:30:52 -0000	1.30
+++ zshconfig.ac	13 Feb 2003 10:53:20 -0000
@@ -563,6 +563,7 @@
 
 dnl Prefer BSD termcap library to SysV curses library, except on certain
 dnl SYSV-derived systems.
+dnl On HPUX, Hcurses is reported to work better than curses.
 AC_ARG_WITH(curses-terminfo,
 [  --with-curses-terminfo     use terminfo support from curses library],
 [if test x$withval = xyes; then
@@ -573,7 +574,7 @@
 fi],
 [case "$host_os" in
   hpux10.*|hpux11.*|solaris*)
-      termcap_curses_order="curses ncurses termcap" ;;
+      termcap_curses_order="Hcurses curses ncurses termcap" ;;
   *)             termcap_curses_order="termcap curses ncurses" ;;
 esac])dnl
 
Index: Etc/MACHINES
===================================================================
RCS file: /cvsroot/zsh/zsh/Etc/MACHINES,v
retrieving revision 1.16
diff -u -r1.16 MACHINES
--- Etc/MACHINES	25 Jul 2002 13:27:21 -0000	1.16
+++ Etc/MACHINES	13 Feb 2003 10:53:20 -0000
@@ -69,15 +69,22 @@
 	does not work, but it does with 3.x and 4.x.
 
 HP: HP-UX 9, 10.20, 11.0
-	Should build `out-of-the-box'.
+	Should build `out-of-the-box', although various problems have
+	been encountered on HP-UX 11.x:
 
-	Problems with dynamic loading have been reported under 11, but
-	this should compile using the standard dlopen() function set
-	(rather than the 10.20 shl_load() function set).  More details of
-	any difficulties would be appreciated.
+	  Some of the special keys on the keyboard (backspace, delete)
+	  have been found to stop functioning.  One suggested fix is
+	  to alter the way the curses library is linked in the Makefile.
+	  This should now be done by default if you do *not* explicitly
+	  specify --with-curses-terminfo.
 
-	Compiling with gcc 2.7.1 is known to fail with header file
-	conflicts on HP-UX 11.  Use the HP ANSI C compiler.
+	  Problems with dynamic loading have been reported, but
+	  this should compile using the standard dlopen() function set
+	  (rather than the 10.20 shl_load() function set).  More details of
+	  any difficulties would be appreciated.
+
+	  Compiling with gcc 2.7.1 is known to fail with header file
+	  conflicts.  Use the HP ANSI C compiler.
 
 IBM: AIX 3.2, 4.x
 	Should build `out-of-the-box', but --enable-zsh-mem will not work.

-- 
Peter Stephenson <pws@csr.com>                  Software Engineer
CSR Ltd., Science Park, Milton Road,
Cambridge, CB4 0WH, UK                          Tel: +44 (0)1223 692070


**********************************************************************
The information transmitted is intended only for the person or
entity to which it is addressed and may contain confidential 
and/or privileged material. 
Any review, retransmission, dissemination or other use of, or
taking of any action in reliance upon, this information by 
persons or entities other than the intended recipient is 
prohibited.  
If you received this in error, please contact the sender and 
delete the material from any computer.
**********************************************************************