Running build-many-glibcs.py with Python 3.12 or later produces a
warning:
build-many-glibcs.py:566: DeprecationWarning: datetime.datetime.utcnow() is deprecated and scheduled for removal in a future version. Use timezone-aware objects to represent datetimes in UTC: datetime.datetime.now(datetime.UTC).
build_time = datetime.datetime.utcnow()
Replace with datetime.datetime.now(datetime.timezone.utc) (the
datetime.UTC constant is new in 3.11, so not suitable for use in this
script at present).
Running build-many-glibcs.py with Python 3.12 or later produces a
warning:
build-many-glibcs.py:173: SyntaxWarning: invalid escape sequence '\.'
m = re.fullmatch('([0-9]+)\.([0-9]+)[.0-9]*', l)
Use a raw string instead to avoid that warning. (Note: I haven't
checked whether any other Python scripts included with glibc might
have issues with newer Python versions.)
All the crypt related functions, cryptographic algorithms, and
make requirements are removed, with only the exception of md5
implementation which is moved to locale folder since it is
required by localedef for integrity protection (libc's
locale-reading code does not check these, but localedef does
generate them).
Besides thec code itself, both internal documentation and the
manual is also adjusted. This allows to remove both --enable-crypt
and --enable-nss-crypt configure options.
Checked with a build for all affected ABIs.
Co-authored-by: Zack Weinberg <zack@owlfolio.org>
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
The libcrypt was maked to be phase out on 2.38, and a better project
already exist that provide both compatibility and better API
(libxcrypt). The sparc optimizations add the burden to extra
build-many-glibcs.py configurations.
Checked on sparc64 and sparcv9.
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
Notes for future devs:
* Add tools as you find they're needed, with version 0,0
* Bump version when you find an old tool that doesn't work
* Don't add a version just because you know it works
Co-authored-by: Lukasz Majewski <lukma@denx.de>
Co-authored-by: Adhemerval Zanella Netto <adhemerval.zanella@linaro.org>
This patch makes build-many-glibcs.py use the new GMP 6.3.0 and MPFR
4.2.1 releases.
Tested with build-many-glibcs.py (host-libraries, compilers and glibcs
builds).
We mentioned eventual dropping of libcrypt in the 2.28 NEWS. Actually
put that plan in motion by first disabling building libcrypt by default.
note in NEWS that the library will be dropped completely in a future
release.
Also add a couple of builds into build-many-glibcs.py.
Signed-off-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
Reviewed-by: Andreas K. Hüttel <dilfridge@gentoo.org>
Add --enable-fortify-source option.
It is now possible to enable fortification through a configure option.
The level may be given as parameter, if none is provided, the configure
script will determine what is the highest level possible that can be set
considering GCC built-ins availability and set it.
If level is explicitly set to 3, configure checks if the compiler
supports the built-in function necessary for it or raise an error if it
isn't.
If the configure option isn't explicitly enabled, it _FORTIFY_SOURCE is
forcibly undefined (and therefore disabled).
The result of the configure checks are new variables, ${fortify_source}
and ${no_fortify_source} that can be used to appropriately populate
CFLAGS.
A dedicated patch will follow to make use of this variable in Makefiles
when necessary.
Updated NEWS and INSTALL.
Adding dedicated x86_64 variant that enables the configuration.
Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
This patch updates build-many-glibcs.py to use Linux 6.3 and GCC 13
branch by default.
Tested with build-many-glibcs.py (host-libraries, compilers and glibc
builds).
And make always supported. The configure option was added on glibc 2.25
and some features require it (such as hwcap mask, huge pages support, and
lock elisition tuning). It also simplifies the build permutations.
Changes from v1:
* Remove glibc.rtld.dynamic_sort changes, it is orthogonal and needs
more discussion.
* Cleanup more code.
Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
It is the default since 2.26 and it has bitrotten over the years,
By using it multiple malloc tests fails:
FAIL: malloc/tst-memalign-2
FAIL: malloc/tst-memalign-2-malloc-hugetlb1
FAIL: malloc/tst-memalign-2-malloc-hugetlb2
FAIL: malloc/tst-memalign-2-mcheck
FAIL: malloc/tst-mxfast-malloc-hugetlb1
FAIL: malloc/tst-mxfast-malloc-hugetlb2
FAIL: malloc/tst-tcfree2
FAIL: malloc/tst-tcfree2-malloc-hugetlb1
FAIL: malloc/tst-tcfree2-malloc-hugetlb2
Checked on x86_64-linux-gnu.
Reviewed-by: DJ Delorie <dj@redhat.com>
This patch makes build-many-glibcs.py use the new MPFR 4.2.0 and MPC
1.3.1 releases.
Tested with build-many-glibcs.py (host-libraries, compilers and glibcs
builds).
The only way to override LD, AR, OBJCOPY, and GPROF is through
--with-binutils (setting the environments variables on configure is
overridden by LIBC_PROG_BINUTILS).
The build-many-glibcs.py (bmg) glibcs option generates a working config,
but not fully concise (some tools will be set from environment variable,
while other will be set from $CC --print-prog-name). So remove the
environment variable set to always use the "$CC --print-prog-name".
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
The assembler is not issued directly, but rather always through CC
wrapper. The binutils version check if done with LD instead.
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
This patch makes build-many-glibcs.py use binutils 2.39 branch.
Tested with build-many-glibcs.py (compilers and glibcs builds). Note:
binutils 2.39 shows the same failures for i686-linux-gnu-no-pie,
x86_64-linux-gnu-no-pie and x86_64-linux-gnu-x32-no-pie building the
glibc testsuite as binutils mainline does.
I used these shell commands:
../glibc/scripts/update-copyrights $PWD/../gnulib/build-aux/update-copyright
(cd ../glibc && git commit -am"[this commit message]")
and then ignored the output, which consisted lines saying "FOO: warning:
copyright statement not found" for each of 7061 files FOO.
I then removed trailing white space from math/tgmath.h,
support/tst-support-open-dev-null-range.c, and
sysdeps/x86_64/multiarch/strlen-vec.S, to work around the following
obscure pre-commit check failure diagnostics from Savannah. I don't
know why I run into these diagnostics whereas others evidently do not.
remote: *** 912-#endif
remote: *** 913:
remote: *** 914-
remote: *** error: lines with trailing whitespace found
...
remote: *** error: sysdeps/unix/sysv/linux/statx_cp.c: trailing lines
I (and maybe one or two others) added a (C) to the copyright notice
regardless of the contribution checklist[1] not mentioning it. Fix all
these instances so that the notice reads as "Copyright The GNU Toolchain
Authors" across the source code.
[1] https://sourceware.org/glibc/wiki/Contribution%20checklist
Signed-off-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
Build glibc programs and tests as PIE by default and enable static-pie
automatically if the architecture and toolchain supports it.
Also add a new configuration option --disable-default-pie to prevent
building programs as PIE.
Only the following architectures now have PIE disabled by default
because they do not work at the moment. hppa, ia64, alpha and csky
don't work because the linker is unable to handle a pcrel relocation
generated from PIE objects. The microblaze compiler is currently
failing with an ICE. GNU hurd tries to enable static-pie, which does
not work and hence fails. All these targets have default PIE disabled
at the moment and I have left it to the target maintainers to enable PIE
on their targets.
build-many-glibcs runs clean for all targets. I also tested x86_64 on
Fedora and Ubuntu, to verify that the default build as well as
--disable-default-pie work as expected with both system toolchains.
Signed-off-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Starting from GCC 12, the .init_array and .fini_array sections are enabled
unconditionally by
commit 13a39886940331149173b25d6ebde0850668d8b9
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Tue Jun 8 16:09:24 2021 -0700
Always enable DT_INIT_ARRAY/DT_FINI_ARRAY on Linux
configure GCC with --enable-initfini-array to enable them when using GCC
release branches.
Fixes BZ #27945.
The renaming of installed shared libraries to use the SONAME directly
rather than linking to a versioned name stopped build-many-glibcs.py
--strip (used to facilitate comparing binaries before and after
changes that aren't meant to change any generated code in installed
glibc shared libraries) from stripping most of the installed shared
libraries, because it stripped only the *.so names. Fix it to strip
*.so* names instead and to detect the case of linker scripts using
grep instead of hardcoding particular files that are linker scripts.
Tested with build-many-glibcs.py --strip.
