* Merge VMS patches by Hartmut Becker.

1 files changed, 120 insertions, 16 deletions

diff --git a/readme.vms b/readme.vms
index 43b4dd07..dacc3940 100644
--- a/readme.vms
+++ b/readme.vms
@@ -1,9 +1,111 @@
+This is the VMS port of GNU Make done by Hartmut.Becker@compaq.com.
+
+It is based on the specific version 3.77k and on 3.78.1. 3.77k was done
+by Klaus Kämpf <kkaempf@rmi.de>, the code was based on the VMS port of
+GNU Make 3.60 by Mike Moretti.
+
+It was ported on OpenVMS/Alpha V7.1, DECC V5.7-006. It was re-build and
+tested on OpenVMS/Alpha V7.2, OpenVMS/VAX 7.1 and 5.5-2. Different
+versions of DECC were used. VAXC was tried: it fails; but it doesn't
+seem worth to get it working. There are still some PTRMISMATCH warnings
+during the compile. Although perl is working on VMS the test scripts
+don't work. The function $shell is still missing.
+
+New in 3.78.1:
+
+Fix a problem with automatically remaking makefiles. GNU make uses an
+execve to restart itself after a successful remake of the makefile. On
+UNIX systems execve replaces the running program with a new one and
+resets all signal handling to the default. On VMS execve creates a child
+process, signal and exit handlers of the parent are still active, and,
+unfortunately, corrupt the exit code from the child. Fix in job.c:
+ignore SIGCHLD.
+
+Added some switches to reflect latest features of DECC. Modifications in
+makefile.vms.
+
+Set some definitions to reflect latest features of DECC. Modifications in
+config.h-vms (which is copied to config.h).
+
+Added extern strcmpi declaration to avoid 'implicitly declared' messages.
+Modification in make.h.
+
+Default rule for C++, conditionals for gcc (GCC_IS_NATIVE) or DEC/Digital/
+Compaq c/c++ compilers. Modifications in default.c.
+
+Usage of opendir() and friends, suppress file version. Modifications in dir.c.
+
+Added VMS specific code to handle ctrl+c and ctrl+y to abort make.
+Modifications in job.c.
+
+Added support to have case sensitive targets and dependencies but to
+still use case blind file names. This is especially useful for Java
+makefiles on VMS:
+
+	.SUFFIXES :
+	.SUFFIXES :	.class .java
+	.java.class :
+		javac "$<
+	HelloWorld.class :      HelloWorld.java
+
+A new macro WANT_CASE_SENSITIVE_TARGETS in config.h-vms was introduced.
+It needs to be enabled to get this feature; default is disabled.  The
+macro HAVE_CASE_INSENSITIVE_FS must not be touched: it is still enabled.
+Modifications in file.c and config.h-vms.
+
+Bootstrap make to start building make is still makefile.com, but make
+needs to be re-made with a make to make a correct version: ignore all
+possible warnings, delete all objects, rename make.exe to a different
+name and run it.
+
+Made some minor modifications to the bootstrap build makefile.com.
+
 This is the VMS port of GNU Make.
 
 It is based on the VMS port of GNU Make 3.60 by Mike Moretti.
 
-This port was done by Klaus Kämpf <kkaempf@progis.de> of
-proGIS Software, Aachen, Germany.
+This port was done by Klaus Kämpf <kkaempf@rmi.de>
+
+There is first-level support available from proGIS Software, Germany.
+Visit their web-site at http://www.progis.de to get information
+about other vms software and forthcoming updates to gnu make.
+
+New for 3.77:
+
+/bin/sh style I/O redirection is supported. You can now write lines like
+	mcr sys$disk:[]program.exe < input.txt > output.txt &> error.txt
+
+Makefile variables are looked up in the current environment. You can set
+symbols or logicals in DCL and evaluate them in the Makefile via
+$(<name-of-symbol-or-logical>).  Variables defined in the Makefile
+override VMS symbols/logicals !
+
+Functions for file names are working now. See the GNU Make manual for
+$(dir ...)  and $(wildcard ...).  Unix-style and VMS-style names are
+supported as arguments.
+
+The default rules are set up for GNU C. Building an executable from a
+single source file is as easy as 'make file.exe'.
+
+The variable $(ARCH) is predefined as ALPHA or VAX resp. Makefiles for
+different VMS systems can now be written by checking $(ARCH) as in
+  ifeq ($(ARCH),ALPHA)
+    $(ECHO) "On the Alpha"
+  else
+    $(ECHO) "On the VAX"
+  endif
+
+Command lines of excessive length are correctly broken and written to a
+batch file in sys$scratch for later execution. There's no limit to the
+lengths of commands (and no need for .opt files :-) any more.
+
+Empty commands are handled correctly and don't end in a new DCL process.
+
+
+New for 3.76:
+
+John W. Eaton has updated the VMS port to support libraries and VPATH.
+
 
 To build Make, simply type @makefile.  This should compile all the
 necessary files and link Make.  There is also a file called
@@ -12,6 +114,16 @@ Make with this makefile to rebuild.
 
 Here are some notes about GNU Make for VMS:
 
+The cd command is supported if it's called as $(CD). This invokes
+the 'builtin_cd' command which changes the directory.
+Calling 'set def' doesn't do the trick, since a sub-shell is
+spawned for this command, the directory is changed *in this sub-shell*
+and the sub-shell ends.
+
+Libraries are not supported. They were in GNU Make 3.60 but somehow I
+didn't care porting the code. If there is enough interest, I'll do it at
+some later time.
+
 The variable $^ separates files with commas instead of spaces (It's the
 natural thing to do for VMS).
 
@@ -26,8 +138,8 @@ The default include directory for including other makefiles is
 SYS$SYSROOT:[SYSLIB] (I don't remember why I didn't just use
 SYS$LIBRARY: instead; maybe it wouldn't work that way).
 
-The default makefiles make looks for are: makefile.vms, gnumakefile, makefile.,
-and gnumakefile. .
+The default makefiles make looks for are: makefile.vms, gnumakefile,
+makefile., and gnumakefile. .
 
 The stat() function and handling of time stamps in VMS is broken, so I
 replaced it with a hack in vmsfunctions.c. I will provide a full rewrite
@@ -37,9 +149,9 @@ less than what vms provides. This might be a problem on the faster Alphas.
 You can use a : in a filename only if you preceed it with a backslash ('\').
 E.g.- hobbes\:[bogas.files]
 
-Make ignores success, informational, or warning errors (-S-, -I-, or -W-).
-But it will stop on -E- and -F- errors. (unless you do something to override
-this in your makefile, or whatever).
+Make ignores success, informational, or warning errors (-S-, -I-, or
+-W-).  But it will stop on -E- and -F- errors. (unless you do something
+to override this in your makefile, or whatever).
 
 Remote stuff isn't implemented yet.
 
@@ -47,18 +159,10 @@ Multiple line DCL commands, such as "if" statements, must be put inside
 command files.  You can run a command file by using \@.
 
 
-Change history:
+VMS changes made for 3.74.3
 
-3.76.x
-======
-Added VMS help version (make.hlp) of the Unix man page. To integrate
-that with an existing Help library use a command like the following
- $lib/ins/help sys$help:helplib.hlb make.hlp
-3.74.3
-======
 Lots of default settings are adapted for VMS. See default.c.
 
 Long command lines are now converted to command files.
 
 Comma (',') as a separator is now allowed. See makefile.vms for an example.
-