a few more mksh-os2 inspired fixes

Build.sh

@@ -1,5 +1,5 @@
 #!/bin/sh
-srcversion='$MirOS: src/bin/mksh/Build.sh,v 1.683 2015/07/09 19:19:09 tg Exp $'
+srcversion='$MirOS: src/bin/mksh/Build.sh,v 1.684 2015/07/09 19:28:17 tg Exp $'
 #-
 # Copyright (c) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010,
 #		2011, 2012, 2013, 2014, 2015
@@ -578,8 +578,8 @@ if test -d $tfn || test -d $tfn.exe; then
 	echo "$me: Error: ./$tfn is a directory!" >&2
 	exit 1
 fi
-rmf a.exe* a.out* conftest.c *core core.* ${tfn}* *.bc *.dbg *.ll *.o *.gen \
-    Rebuild.sh lft no signames.inc test.sh x vv.out
+rmf a.exe* a.out* conftest.c conftest.exe* *core core.* ${tfn}* *.bc *.dbg \
+    *.ll *.o *.gen Rebuild.sh lft no signames.inc test.sh x vv.out
 
 SRCS="lalloc.c eval.c exec.c expr.c funcs.c histrap.c jobs.c"
 SRCS="$SRCS lex.c main.c misc.c shf.c syn.c tree.c var.c"
@@ -831,7 +831,11 @@ OpenBSD)
 	: ${HAVE_SETLOCALE_CTYPE=0}
 	;;
 OS/2)
+	HAVE_MKNOD=0	# setmode() incompatible
+	oswarn="; it is currently being ported"
+	check_categories="$check_categories nosymlink"
 	: ${CC=gcc}
+	: ${SIZE=: size}
 	;;
 OSF1)
 	HAVE_SIG_T=0	# incompatible
@@ -1237,7 +1241,7 @@ unknown)
 	;;
 esac
 $e "$bi==> which compiler seems to be used...$ao $ui$ct${et+ on $et}$ao"
-rmf conftest.c conftest.o conftest a.out* a.exe* vv.out
+rmf conftest.c conftest.o conftest a.out* a.exe* conftest.exe* vv.out
 
 #
 # Compiler: works as-is, with -Wno-error and -Werror
@@ -2341,8 +2345,13 @@ files=
 objs=
 sp=
 case $tcfn in
-a.exe|conftest.exe) mkshexe=$tfn.exe ;;
-*) mkshexe=$tfn ;;
+a.exe|conftest.exe)
+	mkshexe=$tfn.exe
+	add_cppflags -DMKSH_EXE_EXT
+	;;
+*)
+	mkshexe=$tfn
+	;;
 esac
 case $curdir in
 *\ *)	mkshshebang="#!./$mkshexe" ;;

check.t

@@ -1,4 +1,4 @@
-# $MirOS: src/bin/mksh/check.t,v 1.699 2015/07/06 17:48:29 tg Exp $
+# $MirOS: src/bin/mksh/check.t,v 1.700 2015/07/09 19:28:18 tg Exp $
 # -*- mode: sh -*-
 #-
 # Copyright © 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010,
@@ -2075,9 +2075,9 @@ expected-stdout:
 name: glob-bad-2
 description:
 	Check that symbolic links aren't stat()'d
-# breaks on FreeMiNT (cannot unlink dangling symlinks)
-# breaks on MSYS (does not support symlinks)
 # breaks on Dell UNIX 4.0 R2.2 (SVR4) where unlink also fails
+# breaks on FreeMiNT (cannot unlink dangling symlinks)
+# breaks on MSYS, OS/2 (do not support symlinks)
 category: !os:mint,!os:msys,!os:svr4.0,!nosymlink
 file-setup: dir 755 "dir"
 file-setup: symlink 644 "dir/abc"
@@ -2132,7 +2132,7 @@ description:
 # breaks on Mac OSX (HFS+ non-standard Unicode canonical decomposition)
 # breaks on Cygwin 1.7 (files are now UTF-16 or something)
 # breaks on QNX 6.4.1 (says RT)
-category: !os:cygwin,!os:darwin,!os:msys,!os:nto
+category: !os:cygwin,!os:darwin,!os:msys,!os:nto,!os:os2
 need-pass: no
 file-setup: file 644 "aÂc"
 stdin:

main.c

@@ -34,7 +34,7 @@
 #include <locale.h>
 #endif
 
-__RCSID("$MirOS: src/bin/mksh/main.c,v 1.296 2015/07/09 19:19:10 tg Exp $");
+__RCSID("$MirOS: src/bin/mksh/main.c,v 1.297 2015/07/09 19:28:20 tg Exp $");
 
 extern char **environ;
 
@@ -264,7 +264,7 @@ main_init(int argc, const char *argv[], Source **sp, struct block **lp)
 
 #if defined(MKSH_BINSHPOSIX) || defined(MKSH_BINSHREDUCED)
 		/* are we called as -sh or /bin/sh or so? */
-		if (!strcmp(ccp, "sh")) {
+		if (!strcmp(ccp, "sh" MKSH_EXE_EXT)) {
 			/* either also turns off braceexpand */
 #ifdef MKSH_BINSHPOSIX
 			/* enable better POSIX conformance */

sh.h

@@ -169,7 +169,7 @@
 #endif
 
 #ifdef EXTERN
-__RCSID("$MirOS: src/bin/mksh/sh.h,v 1.734 2015/07/06 17:48:37 tg Exp $");
+__RCSID("$MirOS: src/bin/mksh/sh.h,v 1.735 2015/07/09 19:28:21 tg Exp $");
 #endif
 #define MKSH_VERSION "R51 2015/07/06"
 
@@ -375,6 +375,13 @@ struct rusage {
 
 /* OS-dependent additions (functions, variables, by OS) */
 
+#ifdef MKSH_EXE_EXT
+#undef MKSH_EXE_EXT
+#define MKSH_EXE_EXT ".exe"
+#else
+#define MKSH_EXE_EXT ""
+#endif
+
 #if !HAVE_FLOCK_DECL
 extern int flock(int, int);
 #endif