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Diffstat (limited to 'readme.vms')
| -rw-r--r-- | readme.vms | 136 |
1 files changed, 120 insertions, 16 deletions
@@ -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. - |