Commit Graph

126 Commits

Author SHA1 Message Date
Lasse Collin 689ae24273 liblzma: Remove ifunc support.
This is *NOT* done for security reasons even though the backdoor
relied on the ifunc code. Instead, the reason is that in this
project ifunc provides little benefits but it's quite a bit of
extra code to support it. The only case where ifunc *might* matter
for performance is if the CRC functions are used directly by an
application. In normal compression use it's completely irrelevant.
2024-04-09 18:22:27 +03:00
Lasse Collin 17aa2e1a79 Update website URLs back to tukaani.org.
The XZ projects were moved back to their original URLs.
2024-04-09 18:22:27 +03:00
Lasse Collin f9cf4c05ed CMake: Fix sabotaged Landlock sandbox check.
It never enabled it.
2024-03-30 14:36:28 +02:00
Lasse Collin c273123ed0 CMake: Use only the generic symbol versioning with NVIDIA HPC Compiler.
It doesn't support the __symver__ attribute or __asm__(".symver ...").
The generic symbol versioning can still be used since it only needs
linker support.
2024-03-15 18:04:10 +02:00
Lasse Collin 2ad7fad670 CMake: Disable symbol versioning on non-glibc Linux.
This better matches what configure.ac does. For example, musl has
only basic symbol versioning support:

https://wiki.musl-libc.org/functional-differences-from-glibc.html#Symbol_versioning

configure.ac tries to enable symbol versioning only with glibc
so now CMake does the same.
2024-03-15 17:30:50 +02:00
Lasse Collin 82f0c0d39e CMake: Make symbol versioning configurable. 2024-03-15 17:30:50 +02:00
Jia Tan b93a8d7631 Tests: Replace HAVE_MICROLZMA usage in CMake and Autotools builds.
This reverts commit adaacafde6.
2024-03-09 09:49:55 +08:00
Jia Tan e5faaebbcf Build: Require attribute no_profile_instrument_function for ifunc usage.
Using __attribute__((__no_profile_instrument_function__)) on the ifunc
resolver works around a bug in GCC -fprofile-generate:
it adds profiling code even to ifunc resolvers which can make
the ifunc resolver crash at program startup. This attribute
was not introduced until GCC 7 and Clang 13, so ifunc won't
be used with prior versions of these compilers.

This bug was brought to our attention by:

    https://bugs.gentoo.org/925415

And was reported to upstream GCC by:

    https://gcc.gnu.org/bugzilla/show_bug.cgi?id=11411
2024-03-05 01:54:30 +08:00
Lasse Collin 5f3d059529 CMake: Warn if translated man pages are missing. 2024-02-29 16:37:19 +02:00
Lasse Collin 4cd1042ee7 CMake: Warn if gettext tools and pre-created .gmo files are missing.
It's only done with CMake >= 3.20 and if library support
for translation was already found.

Sort of fixes: https://github.com/tukaani-project/xz/issues/82
2024-02-29 16:37:19 +02:00
Jia Tan 328c52da8a Build: Fix Linux Landlock feature test in Autotools and CMake builds.
The previous Linux Landlock feature test assumed that having the
linux/landlock.h header file was enough. The new feature tests also
requires that prctl() and the required Landlock system calls are
supported.
2024-02-26 23:27:44 +08:00
Jia Tan eb8ad59e9b Tests: Add test_microlzma to .gitignore and CMakeLists.txt. 2024-02-26 20:06:10 +08:00
Jia Tan 8bf9f72ee1 Fix typos in NEWS and CMakeLists. 2024-02-25 21:41:55 +08:00
Jia Tan adaacafde6 Build: Define HAVE_MICROLZMA when it is configured. 2024-02-23 20:57:59 +08:00
Lasse Collin 4c81c9611f CMake: Add LOCALEDIR to the windres workaround.
LOCALEDIR may contain spaces like in "C:\Program Files".
2024-02-22 19:16:35 +02:00
Lasse Collin 00b06cd0af CMake: Fix building of lzmainfo when translations are enabled. 2024-02-19 16:48:18 +02:00
Lasse Collin b0d1422b60 CMake: Don't assume that -fvisibility=hidden is supported outside Windows.
The original code was good enough for supporting GNU/Linux
and a few others but it wasn't very portable.

CMake doesn't support Solaris Studio's -xldscope=hidden.
If it ever does, things should still work with this commit
as Solaris Studio supports not only its own __global but also
the GNU C __attribute__((visibility("default"))). Support for the
attribute was added in 2007 to Sun Studio 12 compiler version 5.9.
2024-02-19 16:28:49 +02:00
Lasse Collin 2ced9d34be CMake: Revise the component splitting. 2024-02-19 16:28:49 +02:00
Lasse Collin 426bdc709c CMake: Update the main comment and document CMAKE_BUILD_TYPE=Release. 2024-02-19 16:28:49 +02:00
Lasse Collin 4430e075f7 CMake: Use -O2 instead of -O3 in CMAKE_BUILD_TYPE=Release.
-O3 doesn't seem useful for speed but it makes the code bigger.
CMake makes is difficult for users to simply override the
optimization level: CFLAGS / CMAKE_C_FLAGS aren't helpful because
they go before CMAKE_C_FLAGS_RELEASE. Of course, users can override
CMAKE_C_FLAGS_RELEASE directly but then they have to remember to
add also -DNDEBUG to disable assertions.

This commit changes -O3 to -O2 in CMAKE_C_FLAGS_RELEASE if and only if
CMAKE_C_FLAGS_RELEASE cache variable doesn't already exist. So if
a custom value is passed on the command line (or reconfiguring an
already-configured build), the cache variable won't be modified.
2024-02-19 16:28:49 +02:00
Lasse Collin 025eb6d787 CMake: Handle symbol versioning on MicroBlaze specially.
This is to match configure.ac.
2024-02-19 16:28:49 +02:00
Lasse Collin 2edd1a35b2 CMake: Keep build working even if lib/*.[ch] are removed. 2024-02-19 12:21:37 +02:00
Lasse Collin d753e2ce47 CMake: Install documentation. 2024-02-19 12:21:37 +02:00
Lasse Collin 7a0405bea9 CMake: Bump maximum policy version to 3.28.
CMP0154 doesn't affect us since we don't use FILE_SET.
2024-02-19 12:21:37 +02:00
Lasse Collin c2264ffbe3 CMake: Build lzmainfo. 2024-02-19 12:21:37 +02:00
Lasse Collin 998d0b2953 CMake: Build lzmadec. 2024-02-19 12:21:37 +02:00
Lasse Collin 74e8bc7417 CMake: Add test_scripts.sh to the tests.
In contrast to Automake, skipping of this test when decoders
are disabled is handled at CMake side instead of test_scripts.sh
because CMake-build doesn't create config.h.
2024-02-19 12:21:37 +02:00
Lasse Collin 4808f238a7 CMake: Install scripts.
Compared to the Autotools-based build, this has simpler handling
for the shell (@POSIX_SHELL@) and extra PATH entry for the scripts
(configure has --enable-path-for-scripts=PREFIX). The simpler
metho should be enough for non-ancient systems and Solaris.
2024-02-19 12:21:37 +02:00
Lasse Collin 67610c245b CMake: Simplify symlink creation and install translated man pages.
It helps that cmake_install.cmake doesn't parallelize installation
so symlinks can be created so that the target is always known to
exist (a requirement on Windows in some cases).

This bumps the minimum CMake version from 3.13 to 3.14 to use
file(CREATE_LINK ...). It could be made to work on 3.13 by
calling "cmake -E create_symlink" but it's uglier code and
slower in "make install". 3.14 should be a reasonable version
to require nowadays, especially since the Autotools build
is still the primary build system for most OSes.
2024-02-19 12:21:37 +02:00
Lasse Collin 50cc1d8a5a CMake: Add support for building and installing xz with translations.
If gettext tools are available, the .po files listed in po/LINGUAS
are converted using msgfmt. This allows building with translations
directly from xz.git without Autotools.

If gettext tools aren't available, the Autotools-created .gmo files
in the "po" directory will be used. This allows CMake-based build
to use translations from Autotools-generated tarball.

If translation support is found (Intl_FOUND) but both the
gettext tools and the pre-generated .gmo files are missing,
then "make" will fail.
2024-02-19 12:21:37 +02:00
Lasse Collin 374868d81d xz: Move sandboxing code to sandbox.c and improve Landlock sandbox.
Landlock is now always used just like pledge(2) is: first in more
permissive mode and later (under certain common conditions) in
a strict mode that doesn't allow opening more files.

I put pledge(2) first in sandbox.c because it's the simplest API
to use and still somewhat fine-grained for basic applications.
So it's the simplest thing to understand for anyone reading sandbox.c.
2024-02-17 23:07:35 +02:00
Lasse Collin 22af94128b Add SPDX license identifier into 0BSD source code files. 2024-02-14 18:31:16 +02:00
Lasse Collin 689e0228ba Change most public domain parts to 0BSD.
Translations and doc/xz-file-format.txt and doc/lzma-file-format.txt
were not touched.

COPYING.0BSD was added.
2024-02-14 18:31:12 +02:00
Jia Tan 761f5b69a4 liblzma: Rename crc32_aarch64.h to crc32_arm64.h.
Even though the proper name for the architecture is aarch64, this
project uses ARM64 throughout. So the rename is for consistency.

Additionally, crc32_arm64.h was slightly refactored for the following
changes:

   * Added MSVC, FreeBSD, and macOS support in
     is_arch_extension_supported().

   * crc32_arch_optimized() now checks the size when aligning the
     buffer.

   * crc32_arch_optimized() loop conditions were slightly modified to
     avoid both decrementing the size and incrementing the buffer
     pointer.

   * Use the intrinsic wrappers defined in <arm_acle.h> because GCC and
     Clang name them differently.

   * Minor spacing and comment changes.
2024-02-01 20:09:11 +08:00
Jia Tan 61908e8160 CMake: Add support for ARM64 CRC32 instruction detection. 2024-02-01 20:09:11 +08:00
Chenxi Mao 849d0f282a Speed up CRC32 calculation on ARM64
The CRC32 instructions in ARM64 can calculate the CRC32 result
for 8 bytes in a single operation, making the use of ARM64
instructions much faster compared to the general CRC32 algorithm.

Optimized CRC32 will be enabled if ARM64 has CRC extension
running on Linux.

Signed-off-by: Chenxi Mao <chenxi.mao2013@gmail.com>
2024-01-27 21:49:26 +08:00
Jia Tan 34372a5adb CMake: Support RISC-V BCJ Filter for encoding and decoding. 2024-01-23 23:05:47 +08:00
Jia Tan c26812c5b2 Build: Update website URL. 2024-01-19 23:08:14 +08:00
Lasse Collin 419f55f9df liblzma: Avoid extern lzma_crc32_clmul() and lzma_crc64_clmul().
A CLMUL-only build will have the crcxx_clmul() inlined into
lzma_crcxx(). Previously a jump to the extern lzma_crcxx_clmul()
was needed. Notes about shared liblzma on ELF platforms:

  - On platforms that support ifunc and -fvisibility=hidden, this
    was silly because CLMUL-only build would have that single extra
    jump instruction of extra overhead.

  - On platforms that support neither -fvisibility=hidden nor linker
    version script (liblzma*.map), jumping to lzma_crcxx_clmul()
    would go via PLT so a few more instructions of overhead (still
    not a big issue but silly nevertheless).

There was a downside with static liblzma too: if an application only
needs lzma_crc64(), static linking would make the linker include the
CLMUL code for both CRC32 and CRC64 from crc_x86_clmul.o even though
the CRC32 code wouldn't be needed, thus increasing code size of the
executable (assuming that -ffunction-sections isn't used).

Also, now compilers are likely to inline crc_simd_body()
even if they don't support the always_inline attribute
(or MSVC's __forceinline). Quite possibly all compilers
that build the code do support such an attribute. But now
it likely isn't a problem even if the attribute wasn't supported.

Now all x86-specific stuff is in crc_x86_clmul.h. If other archs
The other archs can then have their own headers with their own
is_clmul_supported() and crcxx_clmul().

Another bonus is that the build system doesn't need to care if
crc_clmul.c is needed.

is_clmul_supported() stays as inline function as it's not needed
when doing a CLMUL-only build (avoids a warning about unused function).
2024-01-11 14:29:42 +02:00
Jia Tan ebddf20214 CMake: Move sandbox detection outside of xz section.
The sandbox is now enabled for xzdec as well, so it no longer belongs
in just the xz section. xz and xzdec are always built, except for older
MSVC versions, so there isn't a need to conditionally show the sandbox
configuration. CMake will do a little unecessary work on older MSVC
versions that can't build xz or xzdec, but this is a very small
downside.
2023-12-21 20:53:23 +08:00
Jia Tan ff7badef53 CMake: Use consistent indentation with check_c_source_compiles(). 2023-11-30 20:09:46 +08:00
Jia Tan d4af167570 CMake: Change __attribute__((__ifunc__())) detection.
This renames ALLOW_ATTR_IFUNC to USE_ATTR_IFUNC and applies the ifunc
detection changes that were made to the Autotools build.

Fixes: https://github.com/tukaani-project/xz/issues/70
2023-11-30 20:07:34 +08:00
Lasse Collin 597f49b614 CMake: Use -D_FILE_OFFSET_BITS=64 if (and only if) needed.
A CMake option LARGE_FILE_SUPPORT is created if and only if
-D_FILE_OFFSET_BITS=64 affects sizeof(off_t).

This is needed on many 32-bit platforms and even with 64-bit builds
with MinGW-w64 to get support for files larger than 2 GiB.
2023-10-26 21:46:06 +03:00
Lasse Collin 1bc548b821 CMake: Generate and install liblzma.pc if not using MSVC.
Autotools based build uses -pthread and thus adds it to Libs.private
in liblzma.pc. CMake doesn't use -pthread at all if pthread functions
are available in libc so Libs.private doesn't get -pthread either.
2023-10-26 21:46:06 +03:00
Lasse Collin 2add71966f CMake: Rearrange the PACKAGE_ variables.
The windres workaround now replaces spaces with \x20 so
the package name isn't repeated.

These changes will help with creation of liblzma.pc.
2023-10-26 21:46:06 +03:00
Lasse Collin 80e0750e39 CMake: Create liblzma.def when building liblzma.dll with MinGW-w64. 2023-10-26 21:46:06 +03:00
Lasse Collin 08d12595f4 CMake: Change one CMAKE_CURRENT_SOURCE_DIR to CMAKE_CURRENT_LIST_DIR.
In this case they have identical values.
2023-10-26 21:46:06 +03:00
Lasse Collin e67aaf698d CMake/Windows: Fix the import library filename.
Both PREFIX and IMPORT_PERFIX have to be set to "" to get
liblzma.dll and liblzma.dll.a.
2023-10-26 18:58:21 +03:00
Lasse Collin 88588b1246 Build: Detect -fsanitize= in CFLAGS and incompatible build options.
Now configure will fail if -fsanitize= is found in CFLAGS
and sanitizer-incompatible ifunc or Landlock sandboxing
would be used. These are incompatible with one or more sanitizers.
It's simpler to reject all -fsanitize= uses instead of trying to
pass those that might not cause problems.

CMake-based build was updated similarly. It lets the configuration
finish (SEND_ERROR instead of FATAL_ERROR) so that both error
messages can be seen at once.
2023-10-25 20:18:04 +03:00
Lasse Collin 91c435cf1c CMake: Don't shadow the cache entry ENABLE_THREADS with a normal variable.
Using set(ENABLE_THREADS "posix") is confusing because it sets
a new normal variable and leaves the cache entry with the same
name unchanged. The intent wasn't to change the cache entry so
this switches to a different variable name.
2023-10-22 19:03:52 +03:00