[SV 42447]: VMS simulate exporting symbols

This also includes fixing the most of the exit handling code for VMS.

Self tests:
 Previously about 94 Tests in 36 categories fail.
 Now about 45 tests in 22 categories fail.

Because some tests do not properly clean up, the number of tests that
fail can vary by one or two test cases between consecutive runs.

* Makefile.am: Add new VMS files.
* job.c: add prototype for vms_strsignal().
* job.c: (child_error): Remove VMS specific code as no longer needed.
* job.c: (reap_children): The VMS specific code was setting the
status to 0 instead of setting it to the proper exit status.
* job.h: Add vms_launch_status to struct child.
* main.c: (main): Use environment variables for options to use MCR
* instead of a foreign command, and to always use command files for
subprocesses.
For VMS use (set_program_name) routine which is common to ports of
other GNU packages to VMS to set the program name used internally.
Use (vms_putenv_symbol) to set up symbols to be visible in child
programs, including recursive make launched by execve()
Start of Bash shell detection code for VMS.
* makefile.com: Need nested_include=none for building on VMS search
lists.  Add vms_progname, vms_exit, and vms_export_symbol.
* makefile.vms: Need nested_include=none for building on VMS search
lists.  Add vms_progname, vms_exit, vms_export_symbol.
* makeint.h: Make sure non-standard "VMS" macro is defined.  Add
prototypes for new VMS routines.  Remove VMS-specific failure codes.
* vmsjobs.c: Add VMS POSIX exit code constants.
(_is_unixy_shell): Detect Bash shell.
(vms_strsignal): simulate strsignal() on VMS.
(vmsHandleChildTerm): fix to properly report failed LIB$SPAWN() exit
status codes.  Remove code that duplicated code in job.c.
(child_execute_job): Export environment symbols before spawning a
child and restore afterward unless option to use command files for
subprocesses is set.  Improve handling of UNIX null commands ":".
* vms_exit.c: Provides vms_exit() to detect if an exit code is UNIX
or VMS, and converts the UNIX code into a VMS exit code.
* vms_export_symbol.c: Routines to create DCL symbols that work like
shell aliases or exported shell symbols and clean them up on exit.
* vms_export_symbol_test.com: Unit test for vms_export_symbol.c
* vms_progname.c: New file: VMS specific replace for progname.c that
is used in some GNU projects.

12 files changed, 1371 insertions, 138 deletions

diff --git a/Makefile.am b/Makefile.am
index 204ab32..d2451b8 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -79,7 +79,8 @@ EXTRA_DIST =	README build.sh.in $(man_MANS) \
 		README.W32 NMakefile config.h.W32 build_w32.bat subproc.bat \
 		make_msvc_net2003.sln make_msvc_net2003.vcproj \
 		README.VMS makefile.vms makefile.com config.h-vms \
-		vmsdir.h vmsfunctions.c vmsify.c \
+		vmsdir.h vmsfunctions.c vmsify.c vms_exit.c vms_progname.c \
+		vms_export_symbol.c vms_export_symbol_test.com \
 		gmk-default.scm gmk-default.h
 
 # This is built during configure, but behind configure's back
diff --git a/job.c b/job.c
index 2989249..3baa5c7 100644
--- a/job.c
+++ b/job.c
@@ -59,9 +59,21 @@ int batch_mode_shell = 0;
 #elif defined (VMS)
 
 # include <descrip.h>
+# include <stsdef.h>
 const char *default_shell = "";
 int batch_mode_shell = 0;
 
+#define strsignal vms_strsignal
+char * vms_strsignal (int status);
+
+#ifndef C_FACILITY_NO
+# define C_FACILITY_NO 0x350000
+#endif
+#ifndef VMS_POSIX_EXIT_MASK
+# define VMS_POSIX_EXIT_MASK (C_FACILITY_NO | 0xA000)
+#endif
+
+
 #elif defined (__riscos__)
 
 const char *default_shell = "";
@@ -504,21 +516,6 @@ child_error (struct child *child,
 
   l += strlen (pre) + strlen (post);
 
-#ifdef VMS
-  if ((exit_code & 1) != 0)
-    {
-      OUTPUT_UNSET ();
-      return;
-    }
-  /* Check for a Posix compatible VMS style exit code:
-     decode and print the Posix exit code */
-  if ((exit_code & 0x35a000) == 0x35a000)
-    error(NILF, l + INTSTR_LENGTH, _("%s[%s] Error %d%s"), pre, f->name,
-        ((exit_code & 0x7f8) >> 3), post);
-  else
-    error(NILF, l + INTSTR_LENGTH, _("%s[%s] Error 0x%x%s"), pre, f->name,
-        exit_code, post);
-#else
   if (exit_sig == 0)
     error (NILF, l + INTSTR_LENGTH,
            _("%s[%s] Error %d%s"), pre, f->name, exit_code, post);
@@ -528,7 +525,6 @@ child_error (struct child *child,
       error (NILF, l + strlen (s) + strlen (dump),
              _("%s[%s] %s%s%s"), pre, f->name, s, dump, post);
     }
-#endif /* VMS */
 
   OUTPUT_UNSET ();
 }
@@ -678,8 +674,17 @@ reap_children (int block, int err)
           if (any_local)
             {
 #ifdef VMS
+              /* Todo: This needs more untangling multi-process support */
+              /* Just do single child process support now */
               vmsWaitForChildren (&status);
               pid = c->pid;
+
+              /* VMS failure status can not be fully translated */
+              status = $VMS_STATUS_SUCCESS (c->cstatus) ? 0 : (1 << 8);
+
+              /* A Posix failure can be exactly translated */
+              if ((c->cstatus & VMS_POSIX_EXIT_MASK) == VMS_POSIX_EXIT_MASK)
+                status = (c->cstatus >> 3 & 255) << 8;
 #else
 #ifdef WAIT_NOHANG
               if (!block)
diff --git a/job.h b/job.h
index 3c921ba..36a2cb3 100644
--- a/job.h
+++ b/job.h
@@ -99,6 +99,7 @@ struct child
     char *comname;              /* Temporary command file name */
     int efn;                    /* Completion event flag number */
     int cstatus;                /* Completion status */
+    int vms_launch_status;      /* non-zero if lib$spawn, etc failed */
 #endif
 
     unsigned int  command_line; /* Index into command_lines.  */
diff --git a/main.c b/main.c
index 7f14cba..b2d169c 100644
--- a/main.c
+++ b/main.c
@@ -47,6 +47,10 @@ this program.  If not, see <http://www.gnu.org/licenses/>.  */
 #ifdef _AMIGA
 int __stack = 20000; /* Make sure we have 20K of stack space */
 #endif
+#ifdef VMS
+int vms_use_mcr_command = 0;
+int vms_always_use_cmd_file = 0;
+#endif
 
 void init_dir (void);
 void remote_setup (void);
@@ -1190,14 +1194,38 @@ main (int argc, char **argv, char **envp)
             }
         }
 #endif
-      if (program == 0)
 #ifdef VMS
-        program = vms_progname(argv[0]);
+      set_program_name (argv[0]);
+      program = program_name;
+      {
+        const char *value;
+        value = getenv ("GNV$MAKE_USE_MCR");
+        if (value != NULL)
+          vms_use_mcr_command = 1;
+
+        value = getenv ("GNV$MAKE_USE_CMD_FILE");
+        if (value != NULL)
+          switch (value[0])
+            {
+            case '1':
+            case 'T':
+            case 't':
+            case 'e':
+            case 'E':
+              vms_always_use_cmd_file = 1;
+              break;
+            default:
+              vms_always_use_cmd_file = 0;
+            }
+      }
+      if (need_vms_symbol () && !vms_use_mcr_command)
+        create_foreign_command (program_name, argv[0]);
 #else
+      if (program == 0)
         program = argv[0];
-#endif
       else
         ++program;
+#endif
     }
 
   /* Set up to access user data (files).  */
@@ -1593,8 +1621,12 @@ main (int argc, char **argv, char **envp)
 
   /* The extra indirection through $(MAKE_COMMAND) is done
      for hysterical raisins.  */
+
 #ifdef VMS
-  define_variable_cname("MAKE_COMMAND", vms_command(argv[0]), o_default, 0);
+  if (vms_use_mcr_command)
+    define_variable_cname ("MAKE_COMMAND", vms_command (argv[0]), o_default, 0);
+  else
+    define_variable_cname ("MAKE_COMMAND", program, o_default, 0);
 #else
   define_variable_cname ("MAKE_COMMAND", argv[0], o_default, 0);
 #endif
@@ -1742,7 +1774,7 @@ main (int argc, char **argv, char **envp)
                  _("Makefile from standard input specified twice."));
 
 #ifdef VMS
-# define DEFAULT_TMPDIR     "sys$scratch:"
+# define DEFAULT_TMPDIR     "/sys$scratch/"
 #else
 # ifdef P_tmpdir
 #  define DEFAULT_TMPDIR    P_tmpdir
@@ -1900,7 +1932,7 @@ main (int argc, char **argv, char **envp)
     no_default_sh_exe = !find_and_set_default_shell (NULL);
 #endif /* WINDOWS32 */
 
-#if defined (__MSDOS__) || defined (__EMX__)
+#if defined (__MSDOS__) || defined (__EMX__) || defined (VMS)
   /* We need to know what kind of shell we will be using.  */
   {
     extern int _is_unixy_shell (const char *_path);
@@ -2355,12 +2387,18 @@ main (int argc, char **argv, char **envp)
                   {
                     *p = alloca (40);
                     sprintf (*p, "%s=%u", MAKELEVEL_NAME, makelevel);
+#ifdef VMS
+                    vms_putenv_symbol (*p);
+#endif
                   }
                 else if (strneq (*p, "MAKE_RESTARTS=", CSTRLEN ("MAKE_RESTARTS=")))
                   {
                     *p = alloca (40);
                     sprintf (*p, "MAKE_RESTARTS=%s%u",
                              OUTPUT_IS_TRACED () ? "-" : "", restarts);
+#ifdef VMS
+                    vms_putenv_symbol (*p);
+#endif
                     restarts = 0;
                   }
               }
@@ -2385,6 +2423,9 @@ main (int argc, char **argv, char **envp)
               sprintf (b, "MAKE_RESTARTS=%s%u",
                        OUTPUT_IS_TRACED () ? "-" : "", restarts);
               putenv (b);
+#ifdef __VMS
+              vms_putenv_symbol (b);
+#endif
             }
 
           fflush (stdout);
@@ -2529,8 +2570,7 @@ main (int argc, char **argv, char **envp)
         makefile_status = MAKE_TROUBLE;
         break;
       case us_failed:
-        /* Updating failed.  POSIX.2 specifies exit status >1 for this;
-           but in VMS, there is only success and failure.  */
+        /* Updating failed.  POSIX.2 specifies exit status >1 for this; */
         makefile_status = MAKE_FAILURE;
         break;
     }
diff --git a/makefile.com b/makefile.com
index fe37c05..748bfff 100644
--- a/makefile.com
+++ b/makefile.com
@@ -74,8 +74,9 @@ $ endif
 $ filelist = "alloca ar arscan commands default dir expand file function " + -
              "guile hash implicit job load main misc read remake " + -
              "remote-stub rule output signame variable version " + -
-             "vmsfunctions vmsify vpath " + -
-	     "[.glob]glob [.glob]fnmatch getopt1 getopt strcache"
+             "vmsfunctions vmsify vpath vms_progname vms_exit " + -
+	     "vms_export_symbol [.glob]glob [.glob]fnmatch getopt1 " + -
+             "getopt strcache"
 $!
 $ copy config.h-vms config.h
 $ n=0
@@ -131,6 +132,7 @@ $!-----------------------------------------------------------------------------
 $!
 $ compileit : subroutine
 $ ploc = f$locate("]",p1)
+$! filnam = p1
 $ if ploc .lt. f$length(p1)
 $ then
 $   objdir = f$extract(0, ploc+1, p1)
@@ -139,8 +141,9 @@ $ else
 $   objdir := []
 $   write optf objdir+p1
 $ endif
-$ cc'ccopt'/include=([],[.glob])/obj='objdir' -
-  /define=("allocated_variable_expand_for_file=alloc_var_expand_for_file","unlink=remove","HAVE_CONFIG_H","VMS") -
+$ cc'ccopt'/nested=none/include=([],[.glob])/obj='objdir' -
+  /define=("allocated_variable_expand_for_file=alloc_var_expand_for_file",-
+  "unlink=remove","HAVE_CONFIG_H","VMS") -
   'p1'
 $ exit
 $ endsubroutine : compileit
diff --git a/makefile.vms b/makefile.vms
index ad5ded7..cabb1bb 100644
--- a/makefile.vms
+++ b/makefile.vms
@@ -32,9 +32,12 @@ CP = copy
 #
 
 ifeq ($(CC),cc)
-CFLAGS = $(defines) /include=([],[.glob])/prefix=(all,except=(glob,globfree))/standard=relaxed/warn=(disable=questcompare)
+cinclude = /nested=none/include=([],[.glob])
+cprefix = /prefix=(all,except=(glob,globfree))
+cwarn = /standard=relaxed/warn=(disable=questcompare)
+CFLAGS = $(defines) $(cinclude)$(cprefix)$(cwarn)
 else
-CFLAGS = $(defines) /include=([],[.glob])
+CFLAGS = $(defines) $(cinclude)
 endif
 #LDFLAGS = /deb
 LDFLAGS =
@@ -93,13 +96,14 @@ guile = ,guile.obj
 objs = commands.obj,job.obj,output.obj,dir.obj,file.obj,misc.obj,hash.obj,\
        load.obj,main.obj,read.obj,remake.obj,rule.obj,implicit.obj,\
        default.obj,variable.obj,expand.obj,function.obj,strcache.obj,\
-       vpath.obj,version.obj$(guile)\
-       $(ARCHIVES)$(ALLOCA)$(extras)$(getopt)$(glob)
+       vpath.obj,version.obj,vms_progname.obj,vms_exit.obj,\
+       vms_export_symbol.obj$(guile)$(ARCHIVES)$(extras)$(getopt)$(glob)
 
 srcs = commands.c job.c output.c dir.c file.c misc.c guile.c hash.c \
 	load.c main.c read.c remake.c rule.c implicit.c \
 	default.c variable.c expand.c function.c strcache.c \
-	vpath.c version.c vmsfunctions.c vmsify.c $(ARCHIVES_SRC) $(ALLOCASRC) \
+	vpath.c version.c vmsfunctions.c vmsify.c vms_progname.c vms_exit.c \
+	vms_export_symbol.c $(ARCHIVES_SRC) $(ALLOCASRC) \
 	commands.h dep.h filedef.h job.h output.h makeint.h rule.h variable.h
 
 
@@ -168,6 +172,9 @@ vmsfunctions.obj: vmsfunctions.c makeint.h config.h gnumake.h gettext.h \
 vmsify.obj: vmsify.c
 vpath.obj: vpath.c makeint.h config.h gnumake.h gettext.h filedef.h hash.h \
      variable.h
+vms_progname.obj: vms_progname.c
+vms_exit.obj: vms_exit.c
+vms_export_symbol.obj: vms_export_symbol.c
 
 config.h: config.h-vms
 	$(CP) $< $@
diff --git a/makeint.h b/makeint.h
index fdcae75..6223936 100644
--- a/makeint.h
+++ b/makeint.h
@@ -99,6 +99,15 @@ extern int errno;
 # define isblank(c)     ((c) == ' ' || (c) == '\t')
 #endif
 
+#ifdef __VMS
+/* In strict ANSI mode, VMS compilers should not be defining the
+   VMS macro.  Define it here instead of a bulk edit for the correct code.
+ */
+# ifndef VMS
+#  define VMS
+# endif
+#endif
+
 #ifdef  HAVE_UNISTD_H
 # include <unistd.h>
 /* Ultrix's unistd.h always defines _POSIX_VERSION, but you only get
@@ -201,6 +210,9 @@ unsigned int get_path_max (void);
 # include <perror.h>
 /* Needed to use alloca on VMS.  */
 # include <builtins.h>
+
+extern int vms_use_mcr_command;
+extern int vms_always_use_cmd_file;
 #endif
 
 #ifndef __attribute__
@@ -622,8 +634,33 @@ extern const char *program;
 #endif
 
 #ifdef VMS
-const char *vms_command(const char *argv0);
-const char *vms_progname(const char *argv0);
+const char *vms_command (const char *argv0);
+const char *vms_progname (const char *argv0);
+
+void vms_exit (int);
+# define _exit(foo) vms_exit(foo)
+# define exit(foo) vms_exit(foo)
+
+extern char *program_name;
+
+void
+set_program_name (const char *arv0);
+
+int
+need_vms_symbol (void);
+
+int
+create_foreign_command (const char *command, const char *image);
+
+int
+vms_export_dcl_symbol (const char *name, const char *value);
+
+int
+vms_putenv_symbol (const char *string);
+
+void
+vms_restore_symbol (const char *string);
+
 #endif
 
 extern char *starting_directory;
@@ -643,18 +680,9 @@ extern int handling_fatal_signal;
 #endif
 
 
-#ifdef VMS
-/* These are the VMS __posix_exit compliant exit codes, constructed out of
-   STS$M_INHIB_MSG, C facility code, a POSIX condition code mask, MAKE_NNN<<3 and
-   the coresponding VMS severity, here STS$K_SUCCESS and STS$K_ERROR. */
-#  define MAKE_SUCCESS 0x1035a001
-#  define MAKE_TROUBLE 0x1035a00a
-#  define MAKE_FAILURE 0x1035a012
-#else
-#  define MAKE_SUCCESS 0
-#  define MAKE_TROUBLE 1
-#  define MAKE_FAILURE 2
-#endif
+#define MAKE_SUCCESS 0
+#define MAKE_TROUBLE 1
+#define MAKE_FAILURE 2
 
 /* Set up heap debugging library dmalloc.  */
 
diff --git a/vms_exit.c b/vms_exit.c
new file mode 100644
index 0000000..050550a
--- /dev/null
+++ b/vms_exit.c
@@ -0,0 +1,95 @@
+/* vms_exit.c
+ *
+ * Wrapper for the VMS exit() command to tranlate UNIX codes to be
+ * encoded for POSIX, but also have VMS severity levels.
+ * The posix_exit() variant only sets a severity level for status code 1.
+ *
+ * Author: John E. Malmberg
+ */
+
+/* Copyright (C) 2014 Free Software Foundation, Inc.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+
+/* Per copyright assignment agreement with the Free Software Foundation
+   this software may be available under under other license agreements
+   and copyrights. */
+
+#include <makeint.h>
+
+#include <stsdef.h>
+void
+decc$exit (int status);
+#ifndef C_FACILITY_NO
+# define C_FACILITY_NO 0x350000
+#endif
+
+/* Lowest legal non-success VMS exit code is 8 */
+/* GNU make only defines codes 0, 1, 2 */
+/* So assume any exit code > 8 is a VMS exit code */
+
+#ifndef MAX_EXPECTED_EXIT_CODE
+# define MAX_EXPECTED_EXIT_CODE 7
+#endif
+
+/* Build a Posix Exit with VMS severity */
+void
+vms_exit (int status)
+{
+  int vms_status;
+  /* Fake the __posix_exit with severity added */
+  /* Undocumented correct way to do this. */
+  vms_status = 0;
+
+  /* The default DECC definition is not compatible with doing a POSIX_EXIT */
+  /* So fix it. */
+  if (status == EXIT_FAILURE)
+    status = MAKE_FAILURE;
+
+  /* Trivial case exit success */
+  if (status == 0)
+    decc$exit (STS$K_SUCCESS);
+
+  /* Is this a VMS status then just take it */
+  if (status > MAX_EXPECTED_EXIT_CODE)
+    {
+      /* Make sure that the message inhibit is set since message has */
+      /* already been displayed. */
+      vms_status = status | STS$M_INHIB_MSG;
+      decc$exit (vms_status);
+    }
+
+  /* Unix status codes are limited to 1 byte, so anything larger */
+  /* is a probably a VMS exit code and needs to be passed through */
+  /* A lower value can be set for a macro. */
+  /* Status 0 is always passed through as it is converted to SS$_NORMAL */
+  /* Always set the message inhibit bit */
+  vms_status = C_FACILITY_NO | 0xA000 | STS$M_INHIB_MSG;
+  vms_status |= (status << 3);
+
+  /* STS$K_ERROR is for status that stops makefile that a simple */
+  /* Rerun of the makefile will not fix. */
+
+  if (status == MAKE_FAILURE)
+    vms_status |= STS$K_ERROR;
+  else if (status == MAKE_TROUBLE)
+    {
+      /* Make trouble is for when make was told to do nothing and */
+      /* found that a target was not up to date.  Since a second */
+      /* of make will produce the same condition, this is of */
+      /* Error severity */
+      vms_status |= STS$K_ERROR;
+    }
+  decc$exit (vms_status);
+}
diff --git a/vms_export_symbol.c b/vms_export_symbol.c
new file mode 100644
index 0000000..2cc7367
--- /dev/null
+++ b/vms_export_symbol.c
@@ -0,0 +1,523 @@
+/* File: vms_export_symbol.c
+ *
+ * Some programs need special environment variables deported as DCL
+ * DCL symbols.
+ */
+
+/* Copyright (C) 2014 Free Software Foundation, Inc.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+
+/* Per copyright assignment agreement with the Free Software Foundation
+   this software may be available under under other license agreements
+   and copyrights. */
+
+
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <errno.h>
+
+#include <descrip.h>
+#include <stsdef.h>
+#include <ssdef.h>
+#include <unixlib.h>
+#include <libclidef.h>
+
+#pragma member_alignment save
+#pragma nomember_alignment longword
+struct item_list_3
+{
+  unsigned short len;
+  unsigned short code;
+  void * bufadr;
+  unsigned short * retlen;
+};
+
+
+#pragma member_alignment
+
+int
+LIB$GET_SYMBOL (const struct dsc$descriptor_s * symbol,
+                struct dsc$descriptor_s * value,
+                unsigned short * value_len,
+                const unsigned long * table);
+
+int
+LIB$SET_SYMBOL (const struct dsc$descriptor_s * symbol,
+                const struct dsc$descriptor_s * value,
+                const unsigned long * table);
+
+int
+LIB$DELETE_SYMBOL (const struct dsc$descriptor_s * symbol,
+                   const unsigned long * table);
+
+#define MAX_DCL_SYMBOL_LEN (255)
+#define MAX_DCL_SYMBOL_VALUE (1024)
+
+struct dcl_symbol
+{
+  struct dcl_symbol * link;
+  struct dsc$descriptor_s name_desc;
+  struct dsc$descriptor_s value_desc;
+  char name[MAX_DCL_SYMBOL_LEN + 1];    /* + 1 byte for null terminator */
+  char value[MAX_DCL_SYMBOL_VALUE +1];  /* + 1 byte for null terminator */
+  char pad[3]; /* Pad structure to longword allignment */
+};
+
+static struct dcl_symbol * vms_dcl_symbol_head = NULL;
+
+/* Restore symbol state to original condition. */
+static unsigned long
+clear_dcl_symbol (struct dcl_symbol * symbol)
+{
+
+  const unsigned long symtbl = LIB$K_CLI_LOCAL_SYM;
+  int status;
+
+  if (symbol->value_desc.dsc$w_length == (unsigned short)-1)
+    status = LIB$DELETE_SYMBOL (&symbol->name_desc, &symtbl);
+  else
+    status = LIB$SET_SYMBOL (&symbol->name_desc,
+                             &symbol->value_desc, &symtbl);
+  return status;
+}
+
+
+/* Restore all exported symbols to their original conditions */
+static void
+clear_exported_symbols (void)
+{
+
+  struct dcl_symbol * symbol;
+
+  symbol = vms_dcl_symbol_head;
+
+  /* Walk the list of symbols.  This is done durring exit,
+   * so no need to free memory.
+   */
+  while (symbol != NULL)
+  {
+    clear_dcl_symbol (symbol);
+    symbol = symbol->link;
+  }
+
+}
+
+
+/* Restore the symbol back to the original value
+ * symbol name is either a plain name or of the form "symbol=name" where
+ * the name portion is ignored.
+ */
+void
+vms_restore_symbol (const char * string)
+{
+
+  struct dcl_symbol * symbol;
+  char name[MAX_DCL_SYMBOL_LEN + 1];
+  int status;
+  char * value;
+  int name_len;
+
+  symbol = vms_dcl_symbol_head;
+
+  /* Isolate the name from the value */
+  value = strchr (string, '=');
+  if (value != NULL)
+    {
+      /* Copy the name from the string */
+      name_len = (value - string);
+    }
+  else
+    name_len = strlen (string);
+
+  if (name_len > MAX_DCL_SYMBOL_LEN)
+    name_len = MAX_DCL_SYMBOL_LEN;
+
+  strncpy (name, string, name_len);
+  name[name_len] = 0;
+
+  /* Walk the list of symbols.  The saved symbol is not freed
+   * symbols are likely to be overwritten multiple times, so this
+   * saves time in saving them each time.
+   */
+  while (symbol != NULL)
+    {
+      int result;
+      result = strcmp (symbol->name, name);
+      if (result == 0)
+        {
+          clear_dcl_symbol (symbol);
+          break;
+        }
+      symbol = symbol->link;
+    }
+}
+
+int
+vms_export_dcl_symbol (const char * name, const char * value)
+{
+
+  struct dcl_symbol * symbol;
+  struct dcl_symbol * next;
+  struct dcl_symbol * link;
+  int found;
+  const unsigned long symtbl = LIB$K_CLI_LOCAL_SYM;
+  struct dsc$descriptor_s value_desc;
+  int string_len;
+  int status;
+  char new_value[MAX_DCL_SYMBOL_VALUE + 1];
+  char * dollarp;
+
+  next = vms_dcl_symbol_head;
+  link = vms_dcl_symbol_head;
+
+  /* Is symbol already exported? */
+  found = 0;
+  while ((found == 0) && (link != NULL))
+    {
+      int x;
+      found = !strncasecmp (link->name, name, MAX_DCL_SYMBOL_LEN);
+      if (found)
+        symbol = link;
+      next = link;
+      link = link->link;
+    }
+
+  /* New symbol, set it up */
+  if (found == 0)
+    {
+      symbol = malloc (sizeof (struct dcl_symbol));
+      if (symbol == NULL)
+        return SS$_INSFMEM;
+
+      /* Construct the symbol descriptor, used for both saving
+       * the old symbol and creating the new symbol.
+       */
+      symbol->name_desc.dsc$w_length = strlen (name);
+      if (symbol->name_desc.dsc$w_length > MAX_DCL_SYMBOL_LEN)
+        symbol->name_desc.dsc$w_length = MAX_DCL_SYMBOL_LEN;
+
+      strncpy (symbol->name, name, symbol->name_desc.dsc$w_length);
+      symbol->name[symbol->name_desc.dsc$w_length] = 0;
+      symbol->name_desc.dsc$a_pointer = symbol->name;
+      symbol->name_desc.dsc$b_dtype = DSC$K_DTYPE_T;
+      symbol->name_desc.dsc$b_class = DSC$K_CLASS_S;
+
+      /* construct the value descriptor, used only for saving
+       * the old symbol.
+       */
+      symbol->value_desc.dsc$a_pointer = symbol->value;
+      symbol->value_desc.dsc$w_length = MAX_DCL_SYMBOL_VALUE;
+      symbol->value_desc.dsc$b_dtype = DSC$K_DTYPE_T;
+      symbol->value_desc.dsc$b_class = DSC$K_CLASS_S;
+    }
+
+  if (found == 0)
+    {
+      unsigned long old_symtbl;
+      unsigned short value_len;
+
+      /* Look up the symbol */
+      status = LIB$GET_SYMBOL (&symbol->name_desc, &symbol->value_desc,
+                               &value_len, &old_symtbl);
+      if (!$VMS_STATUS_SUCCESS (status))
+        value_len = (unsigned short)-1;
+      else if (old_symtbl != symtbl)
+        value_len = (unsigned short)-1;
+
+      symbol->value_desc.dsc$w_length = value_len;
+
+      /* Store it away */
+      if (value_len != (unsigned short) -1)
+        symbol->value[value_len] = 0;
+
+      /* Make sure atexit scheduled */
+      if (vms_dcl_symbol_head == NULL)
+        {
+          vms_dcl_symbol_head = symbol;
+          atexit (clear_exported_symbols);
+        }
+      else
+        {
+          /* Extend the chain */
+          next->link = symbol;
+        }
+    }
+
+  /* Create or replace a symbol */
+  value_desc.dsc$a_pointer = new_value;
+  string_len = strlen (value);
+  if (string_len > MAX_DCL_SYMBOL_VALUE)
+    string_len = MAX_DCL_SYMBOL_VALUE;
+
+  strncpy (new_value, value, string_len);
+  new_value[string_len] = 0;
+
+  /* Special handling for GNU Make.  GNU Make doubles the dollar signs
+   * in environment variables read in from getenv().  Make exports symbols
+   * with the dollar signs already doubled.  So all $$ must be converted
+   * back to $.
+   * If the first $ is not doubled, then do not convert at all.
+   */
+  dollarp = strchr (new_value, '$');
+  while (dollarp && dollarp[1] == '$')
+    {
+      int left;
+      dollarp++;
+      left = string_len - (dollarp - new_value - 1);
+      string_len--;
+      if (left > 0)
+        {
+          memmove (dollarp, &dollarp[1], left);
+          dollarp = strchr (&dollarp[1], '$');
+        }
+      else
+        {
+          /* Ended with $$, simple case */
+          dollarp[1] = 0;
+          break;
+        }
+    }
+  value_desc.dsc$w_length = string_len;
+  value_desc.dsc$b_dtype = DSC$K_DTYPE_T;
+  value_desc.dsc$b_class = DSC$K_CLASS_S;
+  status = LIB$SET_SYMBOL (&symbol->name_desc, &value_desc, &symtbl);
+  return status;
+}
+
+/* export a DCL symbol using a string in the same syntax as putenv */
+int
+vms_putenv_symbol (const char * string)
+{
+
+  char name[MAX_DCL_SYMBOL_LEN + 1];
+  int status;
+  char * value;
+  int name_len;
+
+  /* Isolate the name from the value */
+  value = strchr (string, '=');
+  if (value == NULL)
+    {
+      errno = EINVAL;
+      return -1;
+    }
+
+  /* Copy the name from the string */
+  name_len = (value - string);
+  if (name_len > MAX_DCL_SYMBOL_LEN)
+    name_len = MAX_DCL_SYMBOL_LEN;
+
+  strncpy (name, string, name_len);
+  name[name_len] = 0;
+
+  /* Skip past the "=" */
+  value++;
+
+  /* Export the symbol */
+  status = vms_export_dcl_symbol (name, value);
+
+  /* Convert the error to Unix format */
+  if (!$VMS_STATUS_SUCCESS (status))
+    {
+      errno = EVMSERR;
+      vaxc$errno = status;
+      return -1;
+    }
+  return 0;
+}
+
+#if __CRTL_VER >= 70301000
+# define transpath_parm transpath
+#else
+static char transpath[MAX_DCL_SYMBOL_VALUE];
+#endif
+
+/* Helper callback routine for converting Unix paths to VMS */
+static int
+to_vms_action (char * vms_spec, int flag, char * transpath_parm)
+{
+  strncpy (transpath, vms_spec, MAX_DCL_SYMBOL_VALUE - 1);
+  transpath[MAX_DCL_SYMBOL_VALUE - 1] = 0;
+  return 0;
+}
+
+#ifdef __DECC
+# pragma message save
+  /* Undocumented extra parameter use triggers a ptrmismatch warning */
+# pragma message disable ptrmismatch
+#endif
+
+/* Create a foreign command only visible to children */
+int
+create_foreign_command (const char * command, const char * image)
+{
+  char vms_command[MAX_DCL_SYMBOL_VALUE + 1];
+  int status;
+
+  vms_command[0] = '$';
+  vms_command[1] = 0;
+  if (image[0] == '/')
+    {
+#if __CRTL_VER >= 70301000
+      /* Current decc$to_vms is reentrant */
+      decc$to_vms (image, to_vms_action, 0, 1, &vms_command[1]);
+#else
+      /* Older decc$to_vms is not reentrant */
+      decc$to_vms (image, to_vms_action, 0, 1);
+      strncpy (&vms_command[1], transpath, MAX_DCL_SYMBOL_VALUE - 1);
+      vms_command[MAX_DCL_SYMBOL_VALUE] = 0;
+#endif
+    }
+  else
+    {
+      strncpy (&vms_command[1], image, MAX_DCL_SYMBOL_VALUE - 1);
+      vms_command[MAX_DCL_SYMBOL_VALUE] = 0;
+    }
+  status = vms_export_dcl_symbol (command, vms_command);
+
+  return status;
+}
+#ifdef __DECC
+# pragma message restore
+#endif
+
+
+#ifdef DEBUG
+
+int
+main(int argc, char ** argv, char **env)
+{
+
+  char value[MAX_DCL_SYMBOL_VALUE +1];
+  int status = 0;
+  int putenv_status;
+  int vms_status;
+  struct dsc$descriptor_s name_desc;
+  struct dsc$descriptor_s value_desc;
+  const unsigned long symtbl = LIB$K_CLI_LOCAL_SYM;
+  unsigned short value_len;
+  unsigned long old_symtbl;
+  int result;
+  const char * vms_command = "vms_export_symbol";
+  const char * vms_image = "test_image.exe";
+  const char * vms_symbol1 = "test_symbol1";
+  const char * value1 = "test_value1";
+  const char * vms_symbol2 = "test_symbol2";
+  const char * putenv_string = "test_symbol2=value2";
+  const char * value2 = "value2";
+
+  /* Test creating a foreign command */
+  vms_status = create_foreign_command (vms_command, vms_image);
+  if (!$VMS_STATUS_SUCCESS (vms_status))
+    {
+      printf("Create foreign command failed: %d\n", vms_status);
+      status = 1;
+    }
+
+  name_desc.dsc$a_pointer = (char *)vms_command;
+  name_desc.dsc$w_length = strlen (vms_command);
+  name_desc.dsc$b_dtype = DSC$K_DTYPE_T;
+  name_desc.dsc$b_class = DSC$K_CLASS_S;
+
+  value_desc.dsc$a_pointer = value;
+  value_desc.dsc$w_length = MAX_DCL_SYMBOL_VALUE;
+  value_desc.dsc$b_dtype = DSC$K_DTYPE_T;
+  value_desc.dsc$b_class = DSC$K_CLASS_S;
+
+  vms_status = LIB$GET_SYMBOL (&name_desc, &value_desc,
+                               &value_len, &old_symtbl);
+  if (!$VMS_STATUS_SUCCESS (vms_status))
+    {
+      printf ("lib$get_symbol for command failed: %d\n", vms_status);
+      status = 1;
+    }
+
+  value[value_len] = 0;
+  result = strncasecmp (&value[1], vms_image, value_len - 1);
+  if (result != 0)
+    {
+      printf ("create_foreign_command failed!  expected '%s', got '%s'\n",
+              vms_image, &value[1]);
+      status = 1;
+    }
+
+  /* Test exporting a symbol */
+  vms_status = vms_export_dcl_symbol (vms_symbol1, value1);
+  if (!$VMS_STATUS_SUCCESS (vms_status))
+    {
+      printf ("vms_export_dcl_symbol for command failed: %d\n", vms_status);
+      status = 1;
+    }
+
+  name_desc.dsc$a_pointer = (char *)vms_symbol1;
+  name_desc.dsc$w_length = strlen (vms_symbol1);
+  vms_status = LIB$GET_SYMBOL(&name_desc, &value_desc,
+                              &value_len, &old_symtbl);
+  if (!$VMS_STATUS_SUCCESS(vms_status))
+    {
+      printf ("lib$get_symbol for command failed: %d\n", vms_status);
+      status = 1;
+    }
+
+  value[value_len] = 0;
+  result = strncmp (value, value1, value_len);
+  if (result != 0)
+    {
+      printf ("vms_export_dcl_symbol failed!  expected '%s', got '%s'\n",
+              value1, value);
+      status = 1;
+    }
+
+  /* Test putenv for DCL symbols */
+  putenv_status = vms_putenv_symbol (putenv_string);
+  if (putenv_status != 0)
+    {
+      perror ("vms_putenv_symbol");
+      status = 1;
+    }
+
+  name_desc.dsc$a_pointer = (char *)vms_symbol2;
+  name_desc.dsc$w_length = strlen(vms_symbol2);
+  vms_status = LIB$GET_SYMBOL (&name_desc, &value_desc,
+                               &value_len, &old_symtbl);
+  if (!$VMS_STATUS_SUCCESS (vms_status))
+    {
+      printf ("lib$get_symbol for command failed: %d\n", vms_status);
+      status = 1;
+    }
+
+  value[value_len] = 0;
+  result = strncmp (value, value2, value_len);
+  if (result != 0)
+  {
+    printf ("vms_putenv_symbol failed!  expected '%s', got '%s'\n",
+            value2, value);
+    status = 1;
+  }
+
+  vms_restore_symbol (putenv_string);
+  vms_status = LIB$GET_SYMBOL (&name_desc, &value_desc,
+                               &value_len, &old_symtbl);
+  if ($VMS_STATUS_SUCCESS (vms_status))
+    {
+      printf ("lib$get_symbol for command succeeded, should have failed\n");
+      status = 1;
+    }
+
+  exit (status);
+}
+
+#endif
diff --git a/vms_export_symbol_test.com b/vms_export_symbol_test.com
new file mode 100644
index 0000000..4345f44
--- /dev/null
+++ b/vms_export_symbol_test.com
@@ -0,0 +1,37 @@
+$! VMS_EXPORT_SYMBOL_TEST.COM
+$!
+$! Verify the VMS_EXPORT_SYMBOL.C module
+$!
+$! 22-May-2014   J. Malmberg
+$!
+$!=========================================================================
+$!
+$ cc/names=(as_is)/define=(DEBUG=1,_POSIX_EXIT=1) vms_export_symbol.c
+$!
+$ link vms_export_symbol
+$!
+$ delete vms_export_symbol.obj;*
+$!
+$! Need a foreign command to test.
+$ vms_export_symbol := $sys$disk:[]vms_export_symbol.exe
+$ save_export_symbol = vms_export_symbol
+$!
+$ vms_export_symbol
+$ if $severity .ne. 1
+$ then
+$    write sys$output "Test program failed!";
+$ endif
+$!
+$ if vms_export_symbol .nes. save_export_symbol
+$ then
+$   write sys$output "Test failed to restore foreign command!"
+$ endif
+$ if f$type(test_export_symbol) .nes. ""
+$ then
+$   write sys$output "Test failed to clear exported symbol!"
+$ endif
+$ if f$type(test_putenv_symbol) .nes. ""
+$ then
+$   write sys$output "Test failed to clear putenv exported symbol!"
+$ endif
+$!
diff --git a/vms_progname.c b/vms_progname.c
new file mode 100644
index 0000000..199ed32
--- /dev/null
+++ b/vms_progname.c
@@ -0,0 +1,463 @@
+/* File: vms_progname.c
+ *
+ * This module provides a fixup of the program name.
+ *
+ * This module is designed to be a plug in replacement for the
+ * progname module used by many GNU utilities with a few enhancements
+ * needed for GNU Make.
+ *
+ * It does not support the HAVE_DECL_PROGRAM_INVOCATION_* macros at this
+ * time.
+ *
+ * Make sure that the program_name string is set as close as possible to
+ *    what the original command was given.
+ *
+ * When run from DCL, The argv[0] element is initialized with an absolute
+ * path name.  The decc$ feature logical names can control the format
+ * of this pathname.  In some cases it causes the UNIX format name to be
+ * formatted incorrectly.
+ *
+ * This DCL provided name is usually incompatible with what is expected to
+ * be provided by Unix programs and needs to be replaced.
+ *
+ * When run from an exec() call, the argv[0] element is initialized by the
+ * program.  This name is compatible with what is expected to be provided
+ * by Unix programs and should be passed through unchanged.
+ *
+ * The DCL provided name can be detected because it always contains the
+ * device name.
+ *
+ * DCL examples:
+ *    devname:[dir]program.exe;1         Normal VMS - remove path and .EXE;n
+ *    devname:[dir]facility$program.exe;1   Facility also needs removal.
+ *    /devname/dir/program.exe
+ *    /DISK$VOLUME/dir/program.exe.1     Bug version should not be there.
+ *    /DISK$VOLUME/dir/program.          Bug Period should not be there.
+ *
+ */
+
+/* Copyright (C) 2014 Free Software Foundation, Inc.
+
+GNU Make is free software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the Free Software
+Foundation; either version 3 of the License, or (at your option) any later
+version.
+
+GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+
+/* Per copyright assignment agreement with the Free Software Foundation
+   this software may be available under under other license agreements
+   and copyrights. */
+
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#include <stdio.h>
+#include <string.h>
+#include <ctype.h>
+#include <stdlib.h>
+
+#include <descrip.h>
+#include <dvidef.h>
+#include <efndef.h>
+#include <fscndef.h>
+#include <stsdef.h>
+
+#ifdef USE_PROGNAME_H
+# include "progname.h"
+#endif
+
+#pragma member_alignment save
+#pragma nomember_alignment longword
+struct item_list_3
+{
+  unsigned short len;
+  unsigned short code;
+  void * bufadr;
+  unsigned short * retlen;
+};
+
+struct filescan_itmlst_2
+{
+  unsigned short length;
+  unsigned short itmcode;
+  char * component;
+};
+
+#pragma member_alignment
+
+int
+SYS$GETDVIW (unsigned long efn,
+             unsigned short chan,
+             const struct dsc$descriptor_s * devnam,
+             const struct item_list_3 * itmlst,
+             void * iosb,
+             void (* astadr)(unsigned long),
+             unsigned long astprm,
+             void * nullarg);
+
+int
+SYS$FILESCAN (const struct dsc$descriptor_s * srcstr,
+              struct filescan_itmlst_2 * valuelist,
+              unsigned long * fldflags,
+              struct dsc$descriptor_s *auxout,
+              unsigned short * retlen);
+
+/* String containing name the program is called with.
+   To be initialized by main().  */
+
+const char *program_name = NULL;
+
+static int internal_need_vms_symbol = 0;
+
+static char vms_new_nam[256];
+
+int
+need_vms_symbol (void)
+{
+  return internal_need_vms_symbol;
+}
+
+
+void
+set_program_name (const char *argv0)
+{
+  int status;
+  int result;
+
+#ifdef DEBUG
+  printf ("original argv0 = %s\n", argv0);
+#endif
+
+  /* Posix requires non-NULL argv[0] */
+  if (argv0 == NULL)
+    {
+      fputs ("A NULL argv[0] was passed through an exec system call.\n",
+             stderr);
+      abort ();
+    }
+
+  program_name = argv0;
+  result = 0;
+  internal_need_vms_symbol = 0;
+
+  /* If the path name starts with a /, then it is an absolute path         */
+  /* that may have been generated by the CRTL instead of the command name  */
+  /* If it is the device name between the slashes, then this was likely    */
+  /* from the run command and needs to be fixed up.                        */
+  /* If the DECC$POSIX_COMPLIANT_PATHNAMES is set to 2, then it is the     */
+  /* DISK$VOLUME that will be present, and it will still need to be fixed. */
+  if (argv0[0] == '/')
+    {
+      char * nextslash;
+      int length;
+      struct item_list_3 itemlist[3];
+      unsigned short dvi_iosb[4];
+      char alldevnam[64];
+      unsigned short alldevnam_len;
+      struct dsc$descriptor_s devname_dsc;
+      char diskvolnam[256];
+      unsigned short diskvolnam_len;
+
+      internal_need_vms_symbol = 1;
+
+       /* Get some information about the disk */
+      /*--------------------------------------*/
+      itemlist[0].len = (sizeof alldevnam) - 1;
+      itemlist[0].code = DVI$_ALLDEVNAM;
+      itemlist[0].bufadr = alldevnam;
+      itemlist[0].retlen = &alldevnam_len;
+      itemlist[1].len = (sizeof diskvolnam) - 1 - 5;
+      itemlist[1].code = DVI$_VOLNAM;
+      itemlist[1].bufadr = &diskvolnam[5];
+      itemlist[1].retlen = &diskvolnam_len;
+      itemlist[2].len = 0;
+      itemlist[2].code = 0;
+
+      /* Add the prefix for the volume name. */
+      /* SYS$GETDVI will append the volume name to this */
+      strcpy (diskvolnam, "DISK$");
+
+      nextslash = strchr (&argv0[1], '/');
+      if (nextslash != NULL)
+        {
+          length = nextslash - argv0 - 1;
+
+          /* Cast needed for HP C compiler diagnostic */
+          devname_dsc.dsc$a_pointer = (char *)&argv0[1];
+          devname_dsc.dsc$w_length = length;
+          devname_dsc.dsc$b_dtype = DSC$K_DTYPE_T;
+          devname_dsc.dsc$b_class = DSC$K_CLASS_S;
+
+          status = SYS$GETDVIW (EFN$C_ENF, 0, &devname_dsc, itemlist,
+                                dvi_iosb, NULL, 0, 0);
+          if (!$VMS_STATUS_SUCCESS (status))
+            {
+              /* If the sys$getdviw fails, then this path was passed by */
+              /* An exec() program and not from DCL, so do nothing */
+              /* An example is "/tmp/program" where tmp: does not exist */
+#ifdef DEBUG
+              printf ("sys$getdviw failed with status %d\n", status);
+#endif
+              result = 0;
+             }
+           else if (!$VMS_STATUS_SUCCESS (dvi_iosb[0]))
+             {
+#ifdef DEBUG
+                printf ("sys$getdviw failed with iosb %d\n", dvi_iosb[0]);
+#endif
+                result = 0;
+              }
+            else
+              {
+                char * devnam;
+                int devnam_len;
+                char argv_dev[64];
+
+                /* Null terminate the returned alldevnam */
+                alldevnam[alldevnam_len] = 0;
+                devnam = alldevnam;
+                devnam_len = alldevnam_len;
+
+                /* Need to skip past any leading underscore */
+                if (devnam[0] == '_')
+                  {
+                    devnam++;
+                    devnam_len--;
+                  }
+
+                /* And remove the trailing colon */
+                if (devnam[devnam_len - 1] == ':')
+                  {
+                    devnam_len--;
+                    devnam[devnam_len] = 0;
+                  }
+
+                /* Null terminate the returned volnam */
+                diskvolnam_len += 5;
+                diskvolnam[diskvolnam_len] = 0;
+
+                /* Check first for normal CRTL behavior */
+                if (devnam_len == length)
+                  {
+                    strncpy (vms_new_nam, &argv0[1], length);
+                    vms_new_nam[length] = 0;
+                    result = (strcasecmp (devnam, vms_new_nam) == 0);
+                  }
+
+                /* If we have not got a match, check for POSIX Compliant */
+                /* behavior.  To be more accurate, we could also check */
+                /* to see if that feature is active. */
+                if ((result == 0) && (diskvolnam_len == length))
+                  {
+                    strncpy (vms_new_nam, &argv0[1], length);
+                    vms_new_nam[length] = 0;
+                    result = (strcasecmp (diskvolnam, vms_new_nam) == 0);
+                  }
+              }
+        }
+      }
+    else
+      {
+        /* The path did not start with a slash, so it could be VMS format */
+        /* If it is vms format, it has a volume/device in it as it must   */
+        /* be an absolute path */
+        struct dsc$descriptor_s path_desc;
+        int status;
+        unsigned long field_flags;
+        struct filescan_itmlst_2 item_list[5];
+        char * volume;
+        char * name;
+        int name_len;
+        char * ext;
+
+        path_desc.dsc$a_pointer = (char *)argv0; /* cast ok */
+        path_desc.dsc$w_length = strlen (argv0);
+        path_desc.dsc$b_dtype = DSC$K_DTYPE_T;
+        path_desc.dsc$b_class = DSC$K_CLASS_S;
+
+        /* Don't actually need to initialize anything buf itmcode */
+        /* I just do not like uninitialized input values */
+
+        /* Sanity check, this must be the same length as input */
+        item_list[0].itmcode = FSCN$_FILESPEC;
+        item_list[0].length = 0;
+        item_list[0].component = NULL;
+
+        /* If the device is present, then it if a VMS spec */
+        item_list[1].itmcode = FSCN$_DEVICE;
+        item_list[1].length = 0;
+        item_list[1].component = NULL;
+
+        /* we need the program name and type */
+        item_list[2].itmcode = FSCN$_NAME;
+        item_list[2].length = 0;
+        item_list[2].component = NULL;
+
+        item_list[3].itmcode = FSCN$_TYPE;
+        item_list[3].length = 0;
+        item_list[3].component = NULL;
+
+        /* End the list */
+        item_list[4].itmcode = 0;
+        item_list[4].length = 0;
+        item_list[4].component = NULL;
+
+        status = SYS$FILESCAN ((const struct dsc$descriptor_s *)&path_desc,
+                               item_list, &field_flags, NULL, NULL);
+
+
+        if ($VMS_STATUS_SUCCESS (status) &&
+           (item_list[0].length == path_desc.dsc$w_length) &&
+           (item_list[1].length != 0))
+          {
+
+            char * dollar;
+            int keep_ext;
+            int i;
+
+            /* We need the filescan to be successful, */
+            /* same length as input, and a volume to be present */
+            internal_need_vms_symbol = 1;
+
+            /* We will assume that we only get to this path on a version */
+            /* of VMS that does not support the EFS character set */
+
+            /* There may be a xxx$ prefix on the image name.  Linux */
+            /* programs do not handle that well, so strip the prefix */
+            name = item_list[2].component;
+            name_len = item_list[2].length;
+            dollar = strrchr (name, '$');
+            if (dollar != NULL)
+              {
+                dollar++;
+                name_len = name_len - (dollar - name);
+                name = dollar;
+              }
+
+            strncpy (vms_new_nam, name, name_len);
+            vms_new_nam[name_len] = 0;
+
+            /* Commit to using the new name */
+            program_name = vms_new_nam;
+
+            /* We only keep the extension if it is not ".exe" */
+            keep_ext = 0;
+            ext = item_list[3].component;
+
+            if (item_list[3].length != 1)
+              {
+                keep_ext = 1;
+                if (item_list[3].length == 4)
+                  {
+                    if ((ext[1] == 'e' || ext[1] == 'E') &&
+                        (ext[2] == 'x' || ext[2] == 'X') &&
+                        (ext[3] == 'e' || ext[3] == 'E'))
+                      keep_ext = 0;
+                  }
+              }
+
+            if (keep_ext == 1)
+              strncpy (&vms_new_nam[name_len], ext, item_list[3].length);
+          }
+      }
+
+    if (result)
+      {
+        char * lastslash;
+        char * dollar;
+        char * dotexe;
+        char * lastdot;
+        char * extension;
+
+        /* This means it is probably the name from a DCL command */
+        /* Find the last slash which separates the file from the */
+        /* path. */
+        lastslash = strrchr (argv0, '/');
+
+        if (lastslash != NULL) {
+            int i;
+
+            lastslash++;
+
+            /* There may be a xxx$ prefix on the image name.  Linux */
+            /* programs do not handle that well, so strip the prefix */
+            dollar = strrchr (lastslash, '$');
+
+            if (dollar != NULL) {
+                dollar++;
+                lastslash = dollar;
+            }
+
+            strcpy (vms_new_nam, lastslash);
+
+            /* In UNIX mode + EFS character set, there should not be a */
+            /* version present, as it is not possible when parsing to  */
+            /* tell if it is a version or part of the UNIX filename as */
+            /* UNIX programs use numeric extensions for many reasons.  */
+
+            lastdot = strrchr (vms_new_nam, '.');
+            if (lastdot != NULL) {
+                int i;
+
+                i = 1;
+                while (isdigit (lastdot[i])) {
+                    i++;
+                }
+                if (lastdot[i] == 0) {
+                    *lastdot = 0;
+                }
+            }
+
+            /* Find the .exe on the name (case insenstive) and toss it */
+            dotexe = strrchr (vms_new_nam, '.');
+            if (dotexe != NULL) {
+                if ((dotexe[1] == 'e' || dotexe[1] == 'E') &&
+                    (dotexe[2] == 'x' || dotexe[2] == 'X') &&
+                    (dotexe[3] == 'e' || dotexe[3] == 'E') &&
+                    (dotexe[4] == 0)) {
+
+                    *dotexe = 0;
+                } else {
+                     /* Also need to handle a null extension because of a */
+                     /* CRTL bug. */
+                     if (dotexe[1] == 0) {
+                         *dotexe = 0;
+                    }
+                }
+            }
+
+            /* Commit to new name */
+            program_name = vms_new_nam;
+
+        } else {
+            /* There is no way that the code should ever get here */
+            /* As we already verified that the '/' was present */
+            fprintf (stderr, "Sanity failure somewhere we lost a '/'\n");
+        }
+    }
+}
+
+#ifdef DEBUG
+
+int
+main (int argc, char ** argv, char **env)
+{
+
+  char command[1024];
+
+  set_program_name (argv[0]);
+
+  printf ("modified argv[0] = %s\n", program_name);
+
+  return 0;
+}
+#endif
diff --git a/vmsjobs.c b/vmsjobs.c
index b11bca1..df93a4d 100644
--- a/vmsjobs.c
+++ b/vmsjobs.c
@@ -20,13 +20,67 @@ this program.  If not, see <http://www.gnu.org/licenses/>.  */
 #include <descrip.h>
 #include <clidef.h>
 
+/* TODO - VMS specific header file conditionally included in makeint.h */
+
+#include <stsdef.h>
+#include <ssdef.h>
+void
+decc$exit (int status);
+
+/* Lowest legal non-success VMS exit code is 8 */
+/* GNU make only defines codes 0, 1, 2 */
+/* So assume any exit code > 8 is a VMS exit code */
+
+#ifndef MAX_EXPECTED_EXIT_CODE
+# define MAX_EXPECTED_EXIT_CODE 7
+#endif
+
+
+#if __CRTL_VER >= 70302000 && !defined(__VAX)
+# define MAX_DCL_LINE_LENGTH 4095
+#else
+# define MAX_DCL_LINE_LENGTH 1023
+#endif
+
 char *vmsify (char *name, int type);
 
 static int vms_jobsefnmask = 0;
 
+/* returns whether path is assumed to be a unix like shell. */
+int
+_is_unixy_shell (const char *path)
+{
+  if (path == NULL)
+      return 0;
+
+  /* When in doubt assume a unix like shell */
+  return 1;
+}
+
+#define VMS_GETMSG_MAX 256
+static char vms_strsignal_text[VMS_GETMSG_MAX + 2];
+
+char *
+vms_strsignal (int status)
+{
+  if (status <= MAX_EXPECTED_EXIT_CODE)
+    sprintf (vms_strsignal_text, "lib$spawn returned %x", status);
+  else
+    {
+      int vms_status;
+      unsigned short * msg_len;
+      unsigned char out[4];
+      vms_status = SYS$GETMSG (status, &msg_len,
+                               vms_strsignal_text, 7, *out);
+    }
+
+  return vms_strsignal_text;
+}
+
+
 /* Wait for nchildren children to terminate */
 static void
-vmsWaitForChildren(int *status)
+vmsWaitForChildren (int *status)
 {
   while (1)
     {
@@ -132,9 +186,19 @@ vmsHandleChildTerm(struct child *child)
 
   (void) sigblock (fatal_signal_mask);
 
-  child_failed = !(child->cstatus & 1);
-  if (child_failed)
-    exit_code = child->cstatus;
+  /* First check to see if this is a POSIX exit status and handle */
+  if ((child->cstatus & VMS_POSIX_EXIT_MASK) == VMS_POSIX_EXIT_MASK)
+    {
+      exit_code = (child->cstatus >> 3) & 255;
+      if (exit_code != MAKE_SUCCESS)
+        child_failed = 1;
+    }
+  else
+    {
+      child_failed = !$VMS_STATUS_SUCCESS (child->cstatus);
+      if (child_failed)
+        exit_code = child->cstatus;
+    }
 
   /* Search for a child matching the deceased one.  */
   lastc = 0;
@@ -145,69 +209,16 @@ vmsHandleChildTerm(struct child *child)
   c = child;
 #endif
 
-  if (child_failed && !c->noerror && !ignore_errors_flag)
+  if ($VMS_STATUS_SUCCESS (child->vms_launch_status))
     {
-      /* The commands failed.  Write an error message,
-         delete non-precious targets, and abort.  */
-      child_error (c, c->cstatus, 0, 0, 0);
-      c->file->update_status = us_failed;
-      delete_child_targets (c);
-    }
-  else
-    {
-      if (child_failed)
-        {
-          /* The commands failed, but we don't care.  */
-          child_error (c, c->cstatus, 0, 0, 1);
-          child_failed = 0;
-        }
-
-#if defined(RECURSIVEJOBS) /* I've had problems with recursive stuff and process handling */
-      /* If there are more commands to run, try to start them.  */
-      start_job (c);
-
-      switch (c->file->command_state)
-        {
-        case cs_running:
-          /* Successfully started.  */
-          break;
-
-        case cs_finished:
-          if (c->file->update_status != us_success)
-            /* We failed to start the commands.  */
-            delete_child_targets (c);
-          break;
-
-        default:
-          OS (error, NILF,
-              _("internal error: '%s' command_state"), c->file->name);
-          abort ();
-          break;
-        }
-#endif /* RECURSIVEJOBS */
+      /* Convert VMS success status to 0 for UNIX code to be happy */
+      child->vms_launch_status = 0;
     }
 
   /* Set the state flag to say the commands have finished.  */
   c->file->command_state = cs_finished;
   notice_finished_file (c->file);
 
-#if defined(RECURSIVEJOBS) /* I've had problems with recursive stuff and process handling */
-  /* Remove the child from the chain and free it.  */
-  if (lastc == 0)
-    children = c->next;
-  else
-    lastc->next = c->next;
-  free_child (c);
-#endif /* RECURSIVEJOBS */
-
-  /* There is now another slot open.  */
-  if (job_slots_used > 0)
-    --job_slots_used;
-
-  /* If the job failed, and the -k flag was not given, die.  */
-  if (child_failed && !keep_going_flag)
-    die (exit_code);
-
   (void) sigsetmask (sigblock (0) & ~(fatal_signal_mask));
 
   return 1;
@@ -216,8 +227,6 @@ vmsHandleChildTerm(struct child *child)
 /* VMS:
    Spawn a process executing the command in ARGV and return its pid. */
 
-#define MAXCMDLEN 200
-
 /* local helpers to make ctrl+c and ctrl+y working, see below */
 #include <iodef.h>
 #include <libclidef.h>
@@ -508,10 +517,8 @@ child_execute_job (char *argv, struct child *child)
             }
         }
       /* expand ':' aka 'do nothing' builtin for bash and friends */
-      else if (cmd[0]==':' && cmd[1]=='\0')
-        {
-          cmd = "continue";
-        }
+      else if (cmd[0]==':')
+        cmd[0] = '!';
     }
   else
     {
@@ -614,23 +621,23 @@ child_execute_job (char *argv, struct child *child)
       cmd = tmp_cmd;
     }
 
-#ifdef USE_DCL_COM_FILE
-  /* Enforce the creation of a command file.
+  /* Enforce the creation of a command file if "vms_always_use_cmd_file" is
+     non-zero.
      Then all the make environment variables are written as DCL symbol
      assignments into the command file as well, so that they are visible
      in the sub-process but do not affect the current process.
      Further, this way DCL reads the input stream and therefore does
      'forced' symbol substitution, which it doesn't do for one-liners when
      they are 'lib$spawn'ed. */
-#else
+
+  /* Otherwise the behavior is: */
   /* Create a *.com file if either the command is too long for
      lib$spawn, or the command contains a newline, or if redirection
      is desired. Forcing commands with newlines into DCLs allows to
      store search lists on user mode logicals.  */
-  if (strlen (cmd) > MAXCMDLEN
+  if (vms_always_use_cmd_file || strlen (cmd) > (MAX_DCL_LINE_LENGTH - 30)
       || (have_redirection != 0)
       || (have_newline != 0))
-#endif
     {
       FILE *outfile;
       char c;
@@ -696,9 +703,9 @@ child_execute_job (char *argv, struct child *child)
             DB (DB_JOBS, (_("Redirected output to %s\n"), ofile));
             ofiledsc.dsc$w_length = 0;
           }
-#ifdef USE_DCL_COM_FILE
+
       /* Export the child environment into DCL symbols */
-      if (child->environment != 0)
+      if (vms_always_use_cmd_file || (child->environment != 0))
         {
           char **ep = child->environment;
           char *valstr;
@@ -712,7 +719,7 @@ child_execute_job (char *argv, struct child *child)
               ep++;
             }
         }
-#endif
+
       fprintf (outfile, "$ %.*s_ = f$verify(%.*s_1)\n", tmpstrlen, tmpstr, tmpstrlen, tmpstr);
 
       /* TODO: give 78 a name! Whether 78 is a good number is another question.
@@ -834,6 +841,17 @@ child_execute_job (char *argv, struct child *child)
 
   vms_jobsefnmask |= (1 << (child->efn - 32));
 
+  /* Export the child environment into DCL symbols */
+  if (!vms_always_use_cmd_file && child->environment != 0)
+    {
+      char **ep = child->environment;
+      while (*ep != 0)
+        {
+          vms_putenv_symbol (*ep);
+          *ep++;
+        }
+    }
+
   /*
     LIB$SPAWN  [command-string]
     [,input-file]
@@ -886,21 +904,23 @@ child_execute_job (char *argv, struct child *child)
 
   if (!setupYAstTried)
     tryToSetupYAst();
-  status = lib$spawn (&cmddsc,                                  /* cmd-string */
-                      (ifiledsc.dsc$w_length == 0)?0:&ifiledsc, /* input-file */
-                      (ofiledsc.dsc$w_length == 0)?0:&ofiledsc, /* output-file */
-                      &spflags,                                 /* flags */
-                      &pnamedsc,                                /* proc name */
-                      &child->pid, &child->cstatus, &child->efn,
-                      0, 0,
-                      0, 0, 0);
-  if (status & 1)
+  child->vms_launch_status = lib$spawn (&cmddsc,               /* cmd-string */
+                     (ifiledsc.dsc$w_length == 0)?0:&ifiledsc, /* input-file */
+                     (ofiledsc.dsc$w_length == 0)?0:&ofiledsc, /* output-file */
+                     &spflags,                                 /* flags */
+                     &pnamedsc,                                /* proc name */
+                     &child->pid, &child->cstatus, &child->efn,
+                     0, 0,
+                     0, 0, 0);
+
+  status = child->vms_launch_status;
+  if ($VMS_STATUS_SUCCESS (status))
     {
-      status= sys$waitfr (child->efn);
-      vmsHandleChildTerm(child);
+      status = sys$waitfr (child->efn);
+      vmsHandleChildTerm (child);
     }
 #else
-  status = lib$spawn (&cmddsc,
+  child->vms_launch_status = lib$spawn (&cmddsc,
                       (ifiledsc.dsc$w_length == 0)?0:&ifiledsc,
                       (ofiledsc.dsc$w_length == 0)?0:&ofiledsc,
                       &spflags,
@@ -908,15 +928,14 @@ child_execute_job (char *argv, struct child *child)
                       &child->pid, &child->cstatus, &child->efn,
                       vmsHandleChildTerm, child,
                       0, 0, 0);
+   status = child->vms_launch_status;
 #endif
 
-  if (!(status & 1))
+  if (!$VMS_STATUS_SUCCESS (status))
     {
-      printf (_("Error spawning, %d\n") ,status);
-      fflush (stdout);
       switch (status)
         {
-        case 0x1c:
+        case SS$_EXQUOTA:
           errno = EPROCLIM;
           break;
         default:
@@ -924,5 +943,16 @@ child_execute_job (char *argv, struct child *child)
         }
     }
 
+  /* Restore the VMS symbols that were changed */
+  if (!vms_always_use_cmd_file && child->environment != 0)
+    {
+      char **ep = child->environment;
+      while (*ep != 0)
+        {
+          vms_restore_symbol (*ep);
+          *ep++;
+        }
+    }
+
   return (status & 1);
 }