FYI: GNU Make 4.4 is coming closer, and it will bring along an
unprecedented set of incompatible changes (for make; that is, a product
that has been unchanged for like 20 years). Most won't affect us, but
some likely will. At the moment, I recommend users to stay at GNU Make
4.2.x for building the JDK. In some not-too-distant future, we will have
to check what breaks with make 4.3/4.4 and fix it.
/Magnus
-------- Forwarded Message --------
Subject: GNU make 4.3.91 release candidate available
Date: Tue, 18 Oct 2022 16:45:48 -0400
From: Paul Smith <psm...@gnu.org>
Reply-To: psm...@gnu.org
Organization: GNU's Not UNIX!
To: bug-m...@gnu.org
CC: coordina...@translationproject.org, platform-test...@gnu.org
--------------------------------------------------------------------
GNU make is a tool which controls the generation of executables and
other non-source files of a program from the program's source files.
You can learn more at: https://www.gnu.org/software/make/
--------------------------------------------------------------------
A new release candidate for GNU make 4.4 is available now for download:
4defb3f9cb1f49956cdb28befb3abafb make-4.3.91.tar.lz
6738e93afc158bab8f1e63f053cbebca make-4.3.91.tar.gz
You can obtain a copy from: https://alpha.gnu.org/gnu/make/
- NEWS ----------------------------------------------------------------
Version 4.3.91 (18 Oct 2022)
A complete list of bugs fixed in this version is available here:
https://sv.gnu.org/bugs/index.php?group=make&report_id=111&fix_release_id=109&set=custom
* WARNING: Deprecation!
The following systems are deprecated in this release:
- OS/2 (EMX)
- AmigaOS
- Xenix
- Cray
In the NEXT release of GNU Make, support for these systems will be removed.
If you want to see them continue to be supported, contact
<bug-m...@gnu.org>.
* WARNING: Future backward-incompatibility!
In the NEXT release of GNU Make, pattern rules will implement the same
behavior change for multiple targets as explicit grouped targets, below: if
any target of the rule is needed by the build, the recipe will be invoked if
any target of the rule is missing or out of date. During testing some
makefiles were found to contain pattern rules that do not build all targets;
this can cause issues so we are delaying this change for one release cycle
to allow these makefiles to be updated. GNU Make shows a warning if it
detects this situation: "pattern recipe did not update peer target".
* WARNING: Backward-incompatibility!
GNU Make now uses temporary files in more situations than previous releases.
If your build system sets TMPDIR (or TMP or TEMP on Windows) and deletes the
contents during the build, or uses restrictive permissions, this may cause
problems. You can choose an alternative temporary directory only for use by
GNU Make by setting the new MAKE_TMPDIR environment variable before invoking
make. Note that this value CANNOT be set inside the makefile, since make
needs to find its temporary directory before the makefiles are parsed.
* WARNING: Backward-incompatibility!
Previously each target in a explicit grouped target rule was considered
individually: if the targets needed by the build were not out of date the
recipe was not run even if other targets in the group were out of date. Now
if any of the grouped targets are needed by the build, then if any of the
grouped targets are out of date the recipe is run and all targets in the
group are considered updated.
* WARNING: Backward-incompatibility!
Previously if --no-print-directory was seen anywhere in the environment or
command line it would take precedence over any --print-directory. Now, the
last setting of directory printing options seen will be used, so a command
line such as "--no-print-directory -w" _will_ show directory entry/exits.
* WARNING: Backward-incompatibility!
Previously the order in which makefiles were remade was not explicitly
stated, but it was (roughly) the inverse of the order in which they were
processed by make. In this release, the order in which makefiles are
rebuilt is the same order in which make processed them, and this is defined
to be true in the GNU Make manual.
* WARNING: Backward-incompatibility!
Previously only simple (one-letter) options were added to the MAKEFLAGS
variable that was visible while parsing makefiles. Now, all options are
available in MAKEFLAGS. If you want to check MAKEFLAGS for a one-letter
option, expanding "$(firstword -$(MAKEFLAGS))" is a reliable way to return
the set of one-letter options which can be examined via findstring, etc.
* WARNING: Backward-incompatibility!
Previously makefile variables marked as export were not exported to commands
started by the $(shell ...) function. Now, all exported variables are
exported to $(shell ...). If this leads to recursion during expansion, then
for backward-compatibility the value from the original environment is used.
To detect this change search for 'shell-export' in the .FEATURES variable.
* WARNING: New build requirement
GNU Make utilizes facilities from GNU Gnulib: Gnulib requires certain C99
features in the C compiler and so these features are required by GNU Make:
https://www.gnu.org/software/gnulib/manual/html_node/C99-features-assumed.html
The configure script should verify the compiler has these features.
* New feature: The .WAIT special target
If the .WAIT target appears between two prerequisites of a target, then
GNU Make will wait for all of the targets to the left of .WAIT in the list
to complete before starting any of the targets to the right of .WAIT.
This feature is available in some other versions of make, and it will be
required by an upcoming version of the POSIX standard for make.
Different patches were made by Alexey Neyman <alex.ney...@auriga.ru> (2005)
and Steffen Nurpmeso <stef...@sdaoden.eu> (2020) that were useful but the
result is a different implementation (closer to Alexey's idea).
* New feature: .NOTPARALLEL accepts prerequisites
If the .NOTPARALLEL special target has prerequisites then all prerequisites
of those targets will be run serially (as if .WAIT was specified between
each prerequisite).
* New feature: The .NOTINTERMEDIATE special target
.NOTINTERMEDIATE Disables intermediate behavior for specific files, for all
files built using a pattern, or for the entire makefile.
Implementation provided by Dmitry Goncharov <dgoncha...@users.sf.net>
* New feature: The $(let ...) function
This function allows user-defined functions to define a set of local
variables: values can be assigned to these variables from within the
user-defined function and they will not impact global variable assignments.
Implementation provided by Jouke Witteveen <j.wittev...@gmail.com>
* New feature: The $(intcmp ...) function
This function allows conditional evaluation controlled by a numerical
comparison.
Implementation provided by Jouke Witteveen <j.wittev...@gmail.com>
* New feature: Improved support for -l / --load-average
On systems that provide /proc/loadavg (Linux), GNU Make will use it to
determine the number of runnable jobs and use this as the current load,
avoiding the need for heuristics.
Implementation provided by Sven C. Dack <sd...@gmx.com>
* New feature: The --shuffle command line option
This option reorders goals and prerequisites to simulate non-determinism
that may be seen using parallel build. Shuffle mode allows a form of "fuzz
testing" of parallel builds to verify that all prerequisites are correctly
described in the makefile.
Implementation provided by Sergei Trofimovich <siarh...@google.com>
* New feature: The --jobserver-style command line option and named pipes
A new jobserver method is used on systems where mkfifo(3) is supported.
This solves a number of obscure issues related to using the jobserver
and recursive invocations of GNU Make. This change means that sub-makes
will connect to the jobserver even if they are not marked as recursive.
It also means that other tools that want to participate in the jobserver
will need to be enhanced as described in the GNU Make manual.
You can force GNU Make to use the simple pipe-based jobserver (perhaps if
you are integrating with other tools or older versions of GNU Make) by
adding the '--jobserver-style=pipe' option to the command line of the
top-level invocation of GNU Make, or via MAKEFLAGS or GNUMAKEFLAGS.
To detect this change search for 'jobserver-fifo' in the .FEATURES variable.
* Some POSIX systems (*BSD) do not allow locks to be taken on pipes, which
caused the output sync feature to not work properly there. Also multiple
invocations of make redirecting to the same output file (e.g., /dev/null)
would cause hangs. Instead of locking stdout (which does have some useful
performance characteristics, but is not portable) create a temporary file
and lock that. Windows continues to use a mutex as before.
* GNU Make has sometimes chosen unexpected, and sub-optimal, chains of
implicit rules due to the definition of "ought to exist" in the implicit
rule search algorithm, which considered any prerequisite mentioned in the
makefile as "ought to exist". This algorithm has been modified to prefer
prerequisites mentioned explicitly in the target being built and only if
that results in no matching rule, will GNU Make consider prerequisites
mentioned in other targets as "ought to exist".
Implementation provided by Dmitry Goncharov <dgoncha...@users.sf.net>
* GNU Make was performing secondary expansion of all targets, even targets
which didn't need to be considered during the build. In this release
only targets which are considered will be secondarily expanded.
Implementation provided by Dmitry Goncharov <dgoncha...@users.sf.net>
* If the MAKEFLAGS variable is modified in a makefile, it will be re-parsed
immediately rather than after all makefiles have been read. Note that
although all options are parsed immediately, some special effects won't
appear until after all makefiles are read.
* The -I option accepts an argument "-" (e.g., "-I-") which means "reset the
list of search directories to empty". Among other things this can be used
to prevent GNU Make from searching in its default list of directories.
* New debug option "print" will show the recipe to be run, even when silent
mode is set, and new debug option "why" will show why a target is rebuilt
(which prerequisites caused the target to be considered out of date).
Implementation provided by David Boyce <david.s.bo...@gmail.com>
* The existing --trace option is made equivalent to --debug=print,why
* Target-specific variables can now be marked "unexport".
* Exporting / unexporting target-specific variables is handled correctly, so
that the attribute of the most specific variable setting is used.
* Special targets like .POSIX are detected upon definition, ensuring
that any
change in behavior takes effect immediately, before the next line is parsed.
* When the jobserver is enabled and GNU Make decides it is invoking a
non-make
sub-process and closes the jobserver pipes, it will now add a new option to
the MAKEFLAGS environment variable that disables the jobserver.
This prevents sub-processes that invoke make from accidentally using other
open file descriptors as jobserver pipes. For more information see
https://savannah.gnu.org/bugs/?57242 and
https://savannah.gnu.org/bugs/?62397
* A long-standing issue with the directory cache has been resolved: changes
made as a side-effect of some other target's recipe are now noticed as
expected.
* GNU Make can now be built for MS-Windows using the Tiny C tcc compiler.
Port provided by Christian Jullien <eli...@orange.fr>
