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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:21:29 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:21:29 +0000
commit29cd838eab01ed7110f3ccb2e8c6a35c8a31dbcc (patch)
tree63ef546b10a81d461e5cf5ed9e98a68cd7dee1aa /src/kmk/TODO.private
parentInitial commit. (diff)
downloadkbuild-29cd838eab01ed7110f3ccb2e8c6a35c8a31dbcc.tar.xz
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Adding upstream version 1:0.1.9998svn3589+dfsg.upstream/1%0.1.9998svn3589+dfsg
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
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+ -*-Indented-Text-*-
+GNU Make TODO List
+------------------
+
+This list comes both from the authors and from users of GNU make.
+
+They are listed in no particular order!
+
+Also, I don't guarantee that all of them will be ultimately deemed "good
+ideas" and implemented. These are just the ones that, at first blush,
+seem to have some merit (and that I can remember).
+
+However, if you see something here you really, really want, speak up.
+All other things being equal, I will tend to implement things that seem
+to maximize user satisfaction.
+
+If you want to implement some of them yourself, barring the ones I've
+marked below, have at it! Please contact me first to let me know you're
+working on it, and give me some info about the design--and, critically,
+information about any user-visible syntax change, etc.
+
+
+The Top Item
+------------
+
+If you know perl (or want to learn DejaGNU or similar), the number one
+priority on my list of things I don't have time to do right now is
+fixing up the GNU make test suite. Most importantly it needs to be made
+"parallelizable", so more than one regression can run at the same time
+(essentially, make the "work" directory local). Also, the CWD during
+the test should be in the work directory or, better, a test-specific
+temporary directory so each test gets a new directory; right now
+sometimes tests leak files into the main directory which causes
+subsequent tests to fail (some tests may need to be tweaked). Beyond
+that, any cleanup done to make writing, reading, or handling tests
+simpler would be great! Please feel free to make whatever changes you
+like to the current tests, given some high-level goals, and that you'll
+port the current tests to whatever you do :).
+
+
+The Rest of the List
+--------------------
+
+ 1) Option to check more than timestamps to determine if targets have
+ changed. This is also a very big one. It's _close_ to my plate :),
+ and I have very definite ideas about how I would like it done.
+ Please pick something else unless you must have this feature. If
+ you try it, please work _extremely_ closely with me on it.
+
+ 1a) Possibly a special case of this is the .KEEP_STATE feature of Sun's
+ make. Some great folks at W U. in Canada did an implementation of
+ this for a class project. Their approach is reasonable and
+ workable, but doesn't really fit into my ideas for #2. Maybe
+ that's OK. I have paperwork for their work so if you want to do
+ this one talk to me to get what they've already done.
+
+ [K R Praveen <praveen@cair.res.in>]
+
+ 2) Currently you can use "%.foo %.bar : %.baz" to mean that one
+ invocation of the rule builds both targets. GNU make needs a way to
+ do that for explicit rules, too. I heard a rumor that some versions
+ of make all you to say "a.foo + a.bar : a.baz" to do this (i.e., a
+ "+" means one invocation builds both). Don't know if this is the
+ best syntax or not... what if you say "a.foo + a.bar a.bam : a.baz";
+ what does that mean?
+
+ 3) Multi-token pattern rule matching (allow %1/%2.c : %1/obj/%2.o,
+ etc., or something like that). Maybe using regex?
+
+ 4) Provide a .TARGETS variable, containing the names of the targets
+ defined in the makefile.
+
+ Actually, I now think a $(targets ...) function, at least, might be
+ better than a MAKETARGETS variable. The argument would be types of
+ targets to list: "phony" is the most useful one. I suppose
+ "default" might also be useful. Maybe some others; check the
+ bitfields to see what might be handy.
+
+ 5) Some sort of operating-system independent way of handling paths
+ would be outstanding, so makefiles can be written for UNIX, VMS,
+ DOS, MS-Windows, Amiga, etc. with a minimum of specialization.
+
+ Or, perhaps related/instead of, some sort of meta-quoting syntax so
+ make can deal with filenames containing spaces, colons, etc. I
+ dunno, maybe something like $[...]? This may well not be worth
+ doing until #1 is done.
+
+ 6) Right now the .PRECIOUS, .INTERMEDIATE, and .SECONDARY
+ pseudo-targets have different capabilities. For example, .PRECIOUS
+ can take a "%", the others can't. Etc. These should all work the
+ same, insofar as that makes sense.
+
+ 7) Improved debugging/logging/etc. capabilities. Part of this is done:
+ I introduced a number of debugging enhancements. Tim Magill is (I
+ think) looking into options to control output more selectively.
+ One thing I want to do in debugging is add a flag to allow debugging
+ of variables as they're expanded (!). This would be incredibly
+ verbose, but could be invaluable when nothing else seems to work and
+ you just can't figure it out. The way variables are expanded now
+ means this isn't 100% trivial, but it probably won't be hard.
+
+
+-------------------------------------------------------------------------------
+Copyright (C) 1997-2016 Free Software Foundation, Inc.
+This file is part of GNU Make.
+
+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/>.