• now this builds fine on DEChengst’s Tru64 box:

| OSF1 rubbereendje.dechengst.nl V5.1 2650 alpha
  with the vendor compiler:
  | Compaq C V6.5-011 on HP Tru64 UNIX V5.1B (Rev. 2650)
  | Compiler Driver V6.5-003 (sys) cc Driver
• the platform’s sig_t is incompatible too (simplify check)
• no compile warnings at all
• results in:
  $ size mksh
  | text    data    bss     dec     hex
  | 327680  16384   17808   361872  58590
  $ file mksh
  | mksh:   COFF format alpha dynamically linked, demand paged executable or object module not stripped - version 3.13-14
  $ ldd mksh
  |
  |         Main  =>   mksh
  |         libc.so  =>   /usr/shlib/libc.so
  $ ls -l mksh
  | -rwxr-xr-x   1 mirbsd   users     395200 Mar  5 19:18 mksh
• minor testsuite issues:
  FAIL ./check.t:regression-13
        unexpected stderr - got too much output
        wanted nothing
        got:
                Successful
                cat: output error
  ⇒ probably harmless
• works like a charm!

sh.h

@@ -8,8 +8,8 @@
 /*	$OpenBSD: c_test.h,v 1.4 2004/12/20 11:34:26 otto Exp $	*/
 /*	$OpenBSD: tty.h,v 1.5 2004/12/20 11:34:26 otto Exp $	*/
 
-#define MKSH_SH_H_ID "$MirOS: src/bin/mksh/sh.h,v 1.193 2008/03/05 17:06:50 tg Exp $"
-#define MKSH_VERSION "R33 2008/03/01"
+#define MKSH_SH_H_ID "$MirOS: src/bin/mksh/sh.h,v 1.194 2008/03/05 18:21:45 tg Exp $"
+#define MKSH_VERSION "R33 2008/03/05"
 
 #if HAVE_SYS_PARAM_H
 #include <sys/param.h>
@@ -183,7 +183,11 @@ typedef int bool;
 #endif
 
 #ifndef NSIG
+#if defined(_NSIG)
 #define NSIG		_NSIG
+#elif defined(SIGMAX)
+#define NSIG		(SIGMAX+1)
+#endif
 #endif
 
 #undef BAD		/* AIX defines that somewhere */