Re: [PATCH] Compilation fix for AIX (missing consts)

[Peter Stephenson <Peter.Stephenson@csr.com>]

On Tue, 26 Apr 2011 15:33:52 +0200
Jérémie Roquet <arkanosis@gmail.com> wrote:
> I've had to fix the source to compile zsh on AIX. It looks like the
> protos were wrong anyway, but gcc doesn't complain on Linux…
> I'm not sure it doesn't break some other platform, but at least these
> are the right protos for AIX, Linux and FreeBSD.
> 
> Any thoughts on this?

As Wayne says, we really need to find the headers, but until then the
following should at least be safe... although this code hasn't change
for a very long time, and it used to compile on AIX, so it's possible
there's a version issue (the other possibility is it's a
local configuration issue).

Index: Src/prototypes.h
===================================================================
RCS file: /cvsroot/zsh/zsh/Src/prototypes.h,v
retrieving revision 1.5
diff -p -u -r1.5 prototypes.h
--- Src/prototypes.h	20 Dec 2010 10:28:43 -0000	1.5
+++ Src/prototypes.h	3 May 2011 10:20:43 -0000
@@ -34,12 +34,24 @@ char *calloc _((size_t, size_t));
 #endif
 
 #if !(defined(USES_TERMCAP_H) || defined(USES_TERM_H))
-extern int tgetent _((char *bp, char *name));
+/*
+ * These prototypes are only used where we don't have the
+ * headers.  In some cases they need tweaking.
+ * TBD: we'd much prefer to get hold of the header where
+ * these are defined.
+ */
+#ifdef _AIX
+#define TC_CONST const
+#else
+#define TC_CONST
+#endif
+extern int tgetent _((char *bp, TC_CONST char *name));
 extern int tgetnum _((char *id));
 extern int tgetflag _((char *id));
 extern char *tgetstr _((char *id, char **area));
-extern char *tgoto _((char *cm, int destcol, int destline));
-extern int tputs _((char *cp, int affcnt, int (*outc) (int)));
+extern char *tgoto _((TC_CONST char *cm, int destcol, int destline));
+extern int tputs _((TC_CONST char *cp, int affcnt, int (*outc) (int)));
+#undef TC_CONST
 #endif
 
 /* MISSING PROTOTYPES FOR VARIOUS OPERATING SYSTEMS */

-- 
Peter Stephenson <pws@csr.com>            Software Engineer
Tel: +44 (0)1223 692070                   Cambridge Silicon Radio Limited
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