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string into the strcache. As a side-effect, many more structure members and
function arguments can/should be declared const.
As mentioned in the changelog, unfortunately measurement shows that this
change does not yet reduce memory. The problem is with secondary expansion:
because of this we store all the prerequisites in the string cache twice.
First we store the prerequisite string after initial expansion but before
secondary expansion, then we store each individual file after secondary
expansion and expand_deps(). I plan to change expand_deps() to be callable
in either context (eval or snap_deps) then have non-second-expansion
targets call expand_deps() during eval, so that we only need to store that
dependency list once.
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A few changes from char* to void* where appropriate, and removing of
unnecessary casts.
Much more work on const-ifying the codebase. This round involves some code
changes to make it correct. NOTE!! There will almost certainly be problems
on the non-POSIX ports that will need to be addressed after the const changes
are finished: they will need to be const-ified properly and there may need to
be some changes to allocate memory, etc. as well.
The next (last?) big push for this, still to come, is const-ifying the
filenames in struct file, struct dep, etc. This will allow us to store file
names in the string cache and finally resolve Savannah bug #15182 (make uses
too much memory), among other advantages.
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- Add more warnings.
- Rename variables that mask out-scope vars with the same name.
- Remove all casts of return values from xmalloc, xrealloc, and alloca.
- Remove casts of the first argument to xrealloc.
- Convert all bcopy/bzero/bcmp invocations to use memcp/memmove/memset/memcmp.
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- Fix handling of special targets like .SUFFIX for VMS insensitive targets.
- Don't make temporary batch files for -n. Make sure batch files are created
in text mode.
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Added new file strcache.c to various non-UNIX makefiles and build scripts.
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Rewrite large chunks of the "Commands" section of the manual to better
describe then backslash-newline handling, the SHELL variable, etc.
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I decided this feature was too impacting to make the permanent default
behavior. This set of changes makes the default behavior of make the
old behavior (no second expansion). If you want second expansion, you
must define the .SECONDEXPANSION: special target before the first target
that needs it.
This set of changes ONLY fixes explicit and static pattern rules to work
like this. Implicit rules still have second expansion enabled all the
time: I'll work on that next.
Note that there is still a backward-incompatibility: now to get the old
SysV behavior using $$@ etc. in the prerequisites list you need to set
.SECONDEXPANSION: as well.
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I did this by adding intelligence into the algorithm such that the
second expansion was only actually performed when the prerequisite list
contained at least one "$", so we knew it is actually needed.
Without this we were using up a LOT more memory, since every single
target (even ones never used by make) had their file variables
initialized. This also used a lot more CPU, since we needed to create
and populate a new variable hash table for every target.
There is one issue remaining with this feature: it leaks memory. In
pattern_search() we now initialize the file variables for every pattern
target, which allocates a hash table, etc. However, sometimes we
recursively invoke pattern_search() (for intermediate files) with an
automatic variable (alloca() I believe) as the file. When that function
returns, obviously, the file variable hash memory is lost.
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* New function: $(info ...)
* Disallow $(eval ...) to create prereq relationships inside command scripts
(caused core dumps)
* Try to allow more tests to succeed in Windows/DOS by sanitizing CRLF and \
* Various bug fixes and code cleanups (see the ChangeLog entry)
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rules, static pattern rules and implicit rules.
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- OS/2 Patches
- OpenVMS updates
- Sanitize the handling of -include/sinclude with and without -k
- Fix the setting of $< for order-only rules.
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Small fixes for W32 (from Jonathan Grant <jg-make@jguk.org>)
Maintainer enhancements to clean up the tree.
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- Apply a fix for the "thundering herd" problem when using "-j -l".
This also fixes bug #4693.
- Fix bug #7257: allow functions as ifdef arguments
- Fix bug #4518: make sure we print all double-colon rules with -p.
- Upgrade to autconf 2.58/automake 1.8/gettext 0.13.1
- Various doc cleanups, etc.
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behaving properly (if you listed prerequisites it worked properly).
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More OS/2 updates from Andreas Buening.
Upgrade build system to autoconf 2.57 and automake 1.7.3.
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enable the automake ansi2knr capability.
Right now this doesn't quite build using a K&R compiler because of a
problem with the loadavg test program, but the rest of the code works. I'm
asking the automake list about this problem.
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GNU make. Also he provides some other performance fixups after doing
some profiling of make on large makefiles.
Modify the test suite to allow the use of Valgrind to find memory problems.
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Add a new test suite for automatic variables.
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properly.
Fix configure: allow cross-compilation; fix getloadavg (still needs _lots_
of work!)
Let $(call ...) functions to be self-referencing. Lets us do transitive
closures, for example.
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* New Galician translation.
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* Fix for PR/1811, from Paul Eggert.
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* Fix compilation on Linux; use libintl.h and not gettext.h when using
the system gettext.
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* Fix linenumbers in error messages for rule definitions.
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* Define COFLAGS to avoid unknown variable warning.
* Fix some usec problems on UnixWare.
* Don't remove .INTERMEDIATE targets specified on the command line.
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* Fix problems with INTERMEDIATE rules.
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* New handling of += in target-specific variables.
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* Apply changes from Paul Eggert.
* Many other cleanups (index/rindex --> strchr/strrchr, etc.)
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* Installed Tim Magill's "graph pruning" performance enhancement.
* Update version to 3.77.90 for the release.
* Require automake 1.4.
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* Update maintainers build process; remove GNUmakefile. Require builders to
run automake && autoreconf by hand.
* Use AC_SUBST_FILE to get the maintMakefile included, rather than GNU
make's include directive, which conflicts with automake 1.4's include
directive.
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