To test the new largefile + year2038 changes, I created a gnulib testdir
./gnulib-tool --create-testdir --dir=../testdir --single-configure
largefile-required year2038-required
and compiled it on various platforms. Here are the results, by ABI:
i386 Linux: Ubuntu 22.04 OK
Debian 9.1 ERROR
Ubuntu 17.04 ERROR
Ubuntu 18.04 ERROR
Manjaro 17 ERROR
openSUSE 12.1 ERROR
Slackware 14 ERROR
Alpine 3.7 ERROR
Solaris 10 ERROR
Solaris 11.4 ERROR
Solaris 11 OmniOS ERROR
Solaris 11 OpenIndiana ERROR
Mac OS X ERROR
Hurd ERROR
GNU/kFreeBSD ERROR
FreeBSD ERROR
NetBSD OK
OpenBSD OK
MidnightBSD ERROR
Haiku ERROR
Cygwin ERROR
Windows mingw BUG
MSVC BUG
Minix 3.3 OK
m68k Linux ERROR
mips Linux: 32-bit ERROR
n32 ERROR
sparc Solaris 10 ERROR
Solaris 11.3 ERROR
Linux ERROR
NetBSD OK
arm Linux ERROR
FreeBSD OK
powerpc AIX ERROR
Linux ERROR
Mac OS X ERROR
x86_64 Linux x32 OK
s390 Linux ERROR
riscv32 Linux ERROR
As you can see, it's highly non-trivial. (Would anyone have guessed that
the outcomes is ERROR for mips n32 but OK for x86_64 x32 ?)
So, let me include this list in the documentation.
2023-04-10 Bruno Haible <br...@clisp.org>
doc: Clarify list of platforms for year2038 support.
* doc/year2038.texi (Avoiding the year 2038 problem): List the platforms
on which year2038-required is known to fail vs. known to succeed.
diff --git a/doc/year2038.texi b/doc/year2038.texi
index d98753101e..abb7b54c84 100644
--- a/doc/year2038.texi
+++ b/doc/year2038.texi
@@ -18,6 +18,51 @@
the year 2038, @samp{year2038-required} causes @command{configure} to
fail.
+With the @samp{year2038-required} module, @command{configure} fails
+on the following 32-bit platforms (or ABIs in bi-arch systems):
+@itemize
+@item
+Linux with glibc < 2.34 on
+x86, arm, mips (32-bit or n32 ABI), powerpc, sparc, s390, hppa, m68k, sh,
csky, microblaze, nios2,
+@item
+Linux/riscv32,
+@item
+Mac OS X on x86 and powerpc,
+@item
+GNU/Hurd/x86,
+@item
+GNU/kFreeBSD/x86,
+@item
+FreeBSD/x86,
+@item
+MidnightBSD/x86,
+@item
+AIX/powerpc,
+@item
+Solaris 10 and 11 on x86 and sparc,
+@item
+Cygwin/x86,
+@item
+Haiku/x86.
+@end itemize
+
+Whereas no failure will occur on the following 32-bit platforms or ABIs:
+@itemize
+@item
+Linux/x86 with glibc >= 2.34 on
+x86, arm, mips (32-bit or n32 ABI), powerpc, sparc, s390, hppa, m68k, sh,
csky, microblaze, nios2,
+@item
+Linux/x86_64-x32,
+@item
+NetBSD on x86 and sparc,
+@item
+OpenBSD/x86,
+@item
+FreeBSD/arm,
+@item
+Minix 3.3.
+@end itemize
+
The Gnulib module @samp{year2038} is like @samp{year2038-required},
except that it causes @command{configure} to fail only when it appears
that the current system should support post-2038 timestamps but
