Commit Graph

1407 Commits

Author SHA1 Message Date
Lasse Collin 7fa7653940 Update INSTALL.generic from Automake 1.16.1. 2020-03-16 16:43:29 +02:00
Lasse Collin 9bd317ef03 Update INSTALL for Windows and DOS and add preliminary info for z/OS. 2020-03-15 15:27:22 +02:00
Lasse Collin a3148c0446 Build: Update m4/ax_pthread.m4 from Autoconf Archive (again). 2020-03-15 15:26:20 +02:00
Lasse Collin 7812002dd3 xz: Never use thousand separators in DJGPP builds.
DJGPP 2.05 added support for thousands separators but it's
broken at least under WinXP with Finnish locale that uses
a non-breaking space as the thousands separator. Workaround
by disabling thousands separators for DJGPP builds.
2020-03-11 21:15:35 +02:00
Lasse Collin 7c8f688bf7 DOS: Update dos/Makefile for DJGPP 2.05.
It doesn't need -fgnu89-inline like 2.04beta did.
2020-03-11 19:38:08 +02:00
Lasse Collin 319ca928d7 DOS: Update instructions in dos/INSTALL.txt. 2020-03-11 19:36:07 +02:00
Lasse Collin cb6b227ce3 DOS: Update config.h.
The added defines assume GCC >= 4.8.
2020-03-11 17:58:51 +02:00
Lasse Collin 4572d53e16 liblzma: Fix a comment and RC_SYMBOLS_MAX.
The comment didn't match the value of RC_SYMBOLS_MAX and the value
itself was slightly larger than actually needed. The only harm
about this was that memory usage was a few bytes larger.
2020-03-02 13:54:33 +02:00
Lasse Collin 265daa873c Build: Make CMake build fail if tuklib_cpucores or tuklib_physmem fails. 2020-02-27 20:58:52 +02:00
Lasse Collin 7c8b904527 Build: Add support for --no-po4a option to autogen.sh.
Normally, if po4a isn't available, autogen.sh will return
with non-zero exit status. The option --no-po4a can be useful
when one knows that po4a isn't available but wants autogen.sh
to still return with zero exit status.
2020-02-27 20:24:27 +02:00
Lasse Collin 292a5c0f9c Update THANKS. 2020-02-25 21:35:14 +02:00
Lasse Collin 474320e990 Build: Fix bugs in the CMake files.
Seems that the phrase "add more quotes" from sh/bash scripting
applies to CMake as well. E.g. passing an unquoted list ${FOO}
to a function that expects one argument results in only the
first element of the list being passed as an argument and
the rest get ignored. Adding quotes helps ("${FOO}").

list(INSERT ...) is weird. Inserting an empty string to an empty
variable results in empty list, but inserting it to a non-empty
variable does insert an empty element to the list.

Since INSERT requires at least one element,
"${CMAKE_THREAD_LIBS_INIT}" needs to be quoted in CMakeLists.txt.
It might result in an empty element in the list. It seems to not
matter as empty elements consistently get ignored in that variable.
In fact, calling cmake_check_push_state() and cmake_check_pop_state()
will strip the empty elements from CMAKE_REQUIRED_LIBRARIES!

In addition to quoting fixes, this fixes checks for the cache
variables in tuklib_cpucores.cmake and tuklib_physmem.cmake.

Thanks to Martin Matuška for testing and reporting the problems.
These fixes aren't tested yet but hopefully they soon will be.
2020-02-25 20:44:10 +02:00
Lasse Collin 7e3493d40e Build: Add very limited experimental CMake support.
This does *NOT* replace the Autotools-based build system in
the foreseeable future. See the comment in the beginning
of CMakeLists.txt.

So far this has been tested only on GNU/Linux but I commit
it anyway to make it easier for others to test. Since I
haven't played much with CMake before, it's likely that
there are things that have been done in a silly or wrong
way and need to be fixed.
2020-02-25 00:00:32 +02:00
Lasse Collin 21bd4701fc Update m4/.gitignore. 2020-02-24 23:37:07 +02:00
Lasse Collin e094d1d0f1 tuklib: Omit an unneeded <sys/types.h> from a tests.
tuklib_cpucores.c and tuklib_physmem.c don't include <sys/types.h>
even via other files in this package, so clearly that header isn't
needed in the tests either (no one has reported build problems due
to a missing header in a .c file).
2020-02-24 23:34:58 +02:00
Lasse Collin b3ed19a55f liblzma: Remove unneeded <sys/types.h> from fastpos_tablegen.c.
This file only generates fastpos_table.c.
It isn't built as a part of liblzma.
2020-02-24 23:23:18 +02:00
Lasse Collin 7b8982b291 Use defined(__GNUC__) before __GNUC__ in preprocessor lines.
This should silence the equivalent of -Wundef in compilers that
don't define __GNUC__.
2020-02-22 14:15:07 +02:00
Lasse Collin 43dfe04e62 liblzma: Add more uses of lzma_memcmplen() to the normal mode of LZMA.
This gives a tiny encoder speed improvement. This could have been done
in 2014 after the commit 544aaa3d13 but
it was forgotten.
2020-02-21 17:40:02 +02:00
Lasse Collin 59e6eb4840 Build: Add visibility.m4 from gnulib.
Appears that this file used to get included as a side effect of
gettext. After the change to gettext version requirements this file
no longer got copied to the package and so the build was broken.
2020-02-21 17:01:15 +02:00
Lasse Collin 7fe3ef2eaa xz: Silence a warning when sig_atomic_t is long int.
It can be true at least on z/OS.
2020-02-21 16:10:44 +02:00
Lasse Collin b0a2a77d10 xz: Avoid unneeded access of a volatile variable. 2020-02-21 15:59:26 +02:00
Lasse Collin 524c2f12c7 tuklib_integer.m4: Optimize the check order.
The __builtin byteswapping is the preferred one so check for it first.
2020-02-21 01:24:18 +02:00
Lasse Collin 57360bb4fd tuklib_exit: Add missing header.
strerror() needs <string.h> which happened to be included via
tuklib_common.h -> tuklib_config.h -> sysdefs.h if HAVE_CONFIG_H
was defined. This wasn't tested without config.h before so it
had worked fine.
2020-02-20 18:54:04 +02:00
Lasse Collin fddd31175e Revert the previous commit and add a comment.
The previous commit broke crc32_tablegen.c.

If the whole package is built without config.h (with defines
set on the compiler command line) this should still work fine
as long as these headers conform to C99 well enough.
2020-02-18 19:12:35 +02:00
Lasse Collin 4e4e9fbb7e Do not check for HAVE_CONFIG_H in tuklib_config.h.
In XZ Utils sysdefs.h takes care of it and the required headers.
2020-02-17 23:37:20 +02:00
Lasse Collin 2d4cef954f sysdefs.h: Omit the conditionals around string.h and limits.h.
string.h is used unconditionally elsewhere in the project and
configure has always stopped if limits.h is missing, so these
headers must have been always available even on the weirdest
systems.
2020-02-16 12:24:13 +02:00
Lasse Collin feb9c1969b Build: Bump Autoconf and Libtool version requirements.
There is no specific reason for this other than blocking
the most ancient versions. These are still old:

Autoconf 2.69 (2012)
Automake 1.12 (2012)
gettext 0.19.6 (2015)
Libtool 2.4 (2010)
2020-02-15 15:07:11 +02:00
Lasse Collin 3d576cf921 Build: Use AM_GNU_GETTEXT_REQUIRE_VERSION and require 0.19.6.
This bumps the version requirement from 0.19 (from 2014) to
0.19.6 (2015).

Using only the old AM_GNU_GETTEXT_VERSION results in old
gettext infrastructure being placed in the package. By using
both macros we get the latest gettext files while the other
programs in the Autotools family can still see the old macro.
2020-02-15 15:05:35 +02:00
Lasse Collin fa792b8bef Translations: Add German translation of the man pages.
Thanks to Mario Blättermann.
2020-02-14 21:26:05 +02:00
Lasse Collin 6f7211b6bb Build: Add support for translated man pages using po4a.
The dependency on po4a is optional. It's never required to install
the translated man pages when xz is built from a release tarball.
If po4a is missing when building from xz.git, the translated man
pages won't be generated but otherwise the build will work normally.

The translations are only updated automatically by autogen.sh and
by "make mydist". This makes it easy to keep po4a as an optional
dependency and ensures that I won't forget to put updated
translations to a release tarball.

The translated man pages aren't installed if --disable-nls is used.

The installation of translated man pages abuses Automake internals
by calling "install-man" with redefined dist_man_MANS and man_MANS.
This makes the hairy script code slightly less hairy. If it breaks
some day, this code needs to be fixed; don't blame Automake developers.

Also, this adds more quotes to the existing shell script code in
the Makefile.am "-hook"s.
2020-02-07 15:32:21 +02:00
Lasse Collin 426f9e5819 Update THANKS. 2020-02-06 17:31:38 +02:00
Lasse Collin e3a4481d02 Update tests/.gitignore. 2020-02-05 22:35:06 +02:00
Lasse Collin 07208de92f Update m4/.gitignore. 2020-02-05 22:28:51 +02:00
Lasse Collin c91fbf223d Update THANKS. 2020-02-05 20:47:38 +02:00
Lasse Collin 15a133b6d1 xz: Make it a fatal error if enabling the sandbox fails.
Perhaps it's too drastic but on the other hand it will let me
learn about possible problems if people report the errors.
This won't be backported to the v5.2 branch.
2020-02-05 20:40:14 +02:00
Lasse Collin af0fb386ef xz: Comment out annoying sandboxing messages. 2020-02-05 20:33:50 +02:00
Lasse Collin 986d8c9b52 Build: Workaround a POSIX shell detection problem on Solaris.
I don't know if the problem is in gnulib's gl_POSIX_SHELL macro
or if xzgrep does something that isn't in POSIX. The workaround
adds a special case for Solaris: if /usr/xpg4/bin/sh exists and
gl_cv_posix_shell wasn't overriden on the configure command line,
use that shell for xzgrep and other scripts. That shell is known
to work and exists on most Solaris systems.
2020-02-05 19:33:37 +02:00
Lasse Collin 6629ed929c Build: Update m4/ax_pthread.m4 from Autoconf Archive. 2020-02-03 22:03:50 +02:00
Lasse Collin 3539705108 xz: Limit --memlimit-compress to at most 4020 MiB for 32-bit xz.
See the code comment for reasoning. It's far from perfect but
hopefully good enough for certain cases while hopefully doing
nothing bad in other situations.

At presets -5 ... -9, 4020 MiB vs. 4096 MiB makes no difference
on how xz scales down the number of threads.

The limit has to be a few MiB below 4096 MiB because otherwise
things like "xz --lzma2=dict=500MiB" won't scale down the dict
size enough and xz cannot allocate enough memory. With
"ulimit -v $((4096 * 1024))" on x86-64, the limit in xz had
to be no more than 4085 MiB. Some safety margin is good though.

This is hack but it should be useful when running 32-bit xz on
a 64-bit kernel that gives full 4 GiB address space to xz.
Hopefully this is enough to solve this:

https://bugzilla.redhat.com/show_bug.cgi?id=1196786

FreeBSD has a patch that limits the result in tuklib_physmem()
to SIZE_MAX on 32-bit systems. While I think it's not the way
to do it, the results on --memlimit-compress have been good. This
commit should achieve practically identical results for compression
while leaving decompression and tuklib_physmem() and thus
lzma_physmem() unaffected.
2020-02-01 19:56:18 +02:00
Lasse Collin ba76d67585 xz: Set the --flush-timeout deadline when the first input byte arrives.
xz --flush-timeout=2000, old version:

  1. xz is started. The next flush will happen after two seconds.
  2. No input for one second.
  3. A burst of a few kilobytes of input.
  4. No input for one second.
  5. Two seconds have passed and flushing starts.

The first second counted towards the flush-timeout even though
there was no pending data. This can cause flushing to occur more
often than needed.

xz --flush-timeout=2000, after this commit:

  1. xz is started.
  2. No input for one second.
  3. A burst of a few kilobytes of input. The next flush will
     happen after two seconds counted from the time when the
     first bytes of the burst were read.
  4. No input for one second.
  5. No input for another second.
  6. Two seconds have passed and flushing starts.
2020-01-26 20:53:25 +02:00
Lasse Collin fd47fd62bb xz: Move flush_needed from mytime.h to file_pair struct in file_io.h. 2020-01-26 20:25:52 +02:00
Lasse Collin 8150356810 xz: coder.c: Make writing output a separate function.
The same code sequence repeats so it's nicer as a separate function.
Note that in one case there was no test for opt_mode != MODE_TEST,
but that was only because that condition would always be true, so
this commit doesn't change the behavior there.
2020-01-26 14:49:22 +02:00
Lasse Collin 5a49e081a0 xz: Fix semi-busy-waiting in xz --flush-timeout.
When input blocked, xz --flush-timeout=1 would wake up every
millisecond and initiate flushing which would have nothing to
flush and thus would just waste CPU time. The fix disables the
timeout when no input has been seen since the previous flush.
2020-01-26 14:13:42 +02:00
Lasse Collin dcca70fe9f xz: Refactor io_read() a bit. 2020-01-26 13:47:31 +02:00
Lasse Collin 4ae9ab70cd xz: Update a comment in file_io.h. 2020-01-26 13:37:08 +02:00
Lasse Collin 3333ba4a67 xz: Move the setting of flush_needed in file_io.c to a nicer location. 2020-01-26 13:27:51 +02:00
Lasse Collin cf2df0f05a Use $(LIB_FUZZING_ENGINE) in tests/ossfuzz/Makefile.
https://github.com/google/oss-fuzz/pull/3219#issuecomment-573751048

Thanks to Bhargava Shastry for sending the patch.
2020-01-19 21:54:33 +02:00
Lasse Collin 7136f1735c Rename unaligned_read32ne to read32ne, and similarly for the others. 2019-12-31 00:47:49 +02:00
Lasse Collin 5e78fcbf2e Rename read32ne to aligned_read32ne, and similarly for the others.
Using the aligned methods requires more care to ensure that
the address really is aligned, so it's nicer if the aligned
methods are prefixed. The next commit will remove the unaligned_
prefix from the unaligned methods which in liblzma are used in
more places than the aligned ones.
2019-12-31 00:29:48 +02:00
Lasse Collin 77bc5bc6dd Revise tuklib_integer.h and .m4.
Add a configure option --enable-unsafe-type-punning to get the
old non-conforming memory access methods. It can be useful with
old compilers or in some other less typical situations but
shouldn't normally be used.

Omit the packed struct trick for unaligned access. While it's
best in some cases, this is simpler. If the memcpy trick doesn't
work, one can request unsafe type punning from configure.

Because CRC32/CRC64 code needs fast aligned reads, if no very
safe way to do it is found, type punning is used as a fallback.
This sucks but since it currently works in practice, it seems to
be the least bad option. It's never needed with GCC >= 4.7 or
Clang >= 3.6 since these support __builtin_assume_aligned and
thus fast aligned access can be done with the memcpy trick.

Other things:
  - Support GCC/Clang __builtin_bswapXX
  - Cleaner bswap fallback macros
  - Minor cleanups
2019-12-31 00:18:24 +02:00