perl 5.32 doesn't builds on Cygwin with quadmath support

[pjacklam]

Something happened between 5.31.11 and 5.32 that causes perl to no longer build on Cygwin with quadmath support.

Here is what I used to build perl. The compiler is one I compiled myself, since Configure is not able to detect the quadmath library if I use the standard Cygwin compiler.

tar axf ../perl-5.32.0.tar.xz || exit
mkdir -p objdir || exit
cd objdir || exit
export PATH=/usr/site/gcc-9.3.0/bin:/usr/bin
../perl-5.32.0/Configure -de -Dmksymlinks -Dusequadmath
make

Here is the end of the output from make

/usr/bin/ld: ListUtil.o:ListUtil.c:(.text+0x3fc4): undefined reference to `_floorq'
/usr/bin/ld: ListUtil.o:ListUtil.c:(.text+0x4024): undefined reference to `_ceilq'
collect2: error: ld returned 1 exit status
make[1]: *** [Makefile:483: ../../lib/auto/List/Util/Util.dll] Error 1
make[1]: Leaving directory '/cygdrive/c/share/src/perl/dist/i686/objdir/cpan/Scalar-List-Utils'
make[1]: Entering directory '/cygdrive/c/share/src/perl/dist/i686/objdir/cpan/Scalar-List-Utils'
/cygdrive/c/share/src/perl/dist/i686/objdir/cpan/Scalar-List-Utils/../../miniperl "-I../../lib" -MExtUtils::Command::MM -e 'cp_nonempty' -- Util.bs ../../lib/auto/List/Util/Util.bs 644
rm -f ../../lib/auto/List/Util/Util.dll
g++  --shared  -Wl,--enable-auto-import -Wl,--export-all-symbols -Wl,--enable-auto-image-base -L/usr/local/lib -fstack-protector-strong  ListUtil.o  -o ../../lib/auto/List/Util/Util.dll  \
  ../../cygperl5_32_0.dll    \

/usr/bin/ld: ListUtil.o:ListUtil.c:(.text+0x3fc4): undefined reference to `_floorq'
/usr/bin/ld: ListUtil.o:ListUtil.c:(.text+0x4024): undefined reference to `_ceilq'
collect2: error: ld returned 1 exit status
make[1]: *** [Makefile:483: ../../lib/auto/List/Util/Util.dll] Error 1
make[1]: Leaving directory '/cygdrive/c/share/src/perl/dist/i686/objdir/cpan/Scalar-List-Utils'
Unsuccessful make(cpan/Scalar-List-Utils): code=512 at make_ext.pl line 588.
make: *** [GNUmakefile:587: lib/auto/List/Util/Util.dll] Error 2

The problem is in the CPAN distribution Scalar-List-Utils, but creating issues seems to have been disabled for that distribution.

This issue seems related to #15443 and #17708

[jkeenan]

The problem is in the CPAN distribution Scalar-List-Utils, but creating issues seems to have been disabled for that distribution.

Peter, thank you for this report.

Scalar-List-Utils is maintained upstream by @leonerd . It uses RT as its issue tracker: https://rt.cpan.org/Dist/Display.html?Name=Scalar-List-Utils. At least one new issue has been created in that queue within the past 24 hours. So, to the extent that this is a problem with List::Util, could you file a ticket there?

Thank you very much.
Jim Keenan

[leonerd]

FYI, I know nothing about cygwin or quadmath. If anyone has suggestions for fixes I can take a look, but I don't think I'll be much help initially finding what that fix might be.

[pjacklam]

Scalar-List-Utils is maintained upstream by @leonerd . It uses RT as its issue tracker: https://rt.cpan.org/Dist/Display.html?Name=Scalar-List-Utils.

Bah. Sorry. My bad. I'll post a bug report there.

[xenu]

Most likely this issue is caused by a bug in EU::MM (#17805, Perl-Toolchain-Gang/ExtUtils-MakeMaker#353) which was fixed upstream but the changes didn't make it into blead (or 5.32) yet.

[pjacklam]

In case anyone is interested: I applied the attached patch to the 5.32.0 source tree, and now it builds on Cygwin with quadmath (-Dusequadmath). It is essentially the same patch as in the two issues I mentioned in the first posting.
quadmath.txt

[karenetheridge]

IMO this patch should be included in 5.32.1 (which normally would be scheduled to be released in a month or so, but nowadays, who knows...)

[Leont]

IMO this patch should be included in 5.32.1 (which normally would be scheduled to be released in a month or so, but nowadays, who knows...)

Cygwin + quadmath kind of needs the updated ExtUtils::MakeMaker, otherwise any xs code that happens to use any math function will fail to compile.