GNU bug report logs - #66709
gzip build fails on s390x because (version 1.13)

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Paul Eggert <eggert <at> cs.ucla.edu>
Cc: tracker <at> debbugs.gnu.org
Subject: bug#66709: closed (gzip build fails on s390x because (version 1.13))
Date: Mon, 23 Oct 2023 21:46:02 +0000

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Your message dated Mon, 23 Oct 2023 14:45:21 -0700
with message-id <50d91fcc-5341-4159-bd44-a6159901331c <at> cs.ucla.edu>
and subject line Re: bug#66709: gzip build fails on s390x because (version 1.13)
has caused the debbugs.gnu.org bug report #66709,
regarding gzip build fails on s390x because (version 1.13)
to be marked as done.

(If you believe you have received this mail in error, please contact
help-debbugs <at> gnu.org.)


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66709: https://debbugs.gnu.org/cgi/bugreport.cgi?bug=66709
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From: Sarah-Julia Kriesch <sarah-julia.kriesch <at> gmx.de>
To: bug-gzip <at> gnu.org
Subject: gzip build fails on s390x because (version 1.13)
Date: Mon, 23 Oct 2023 18:51:33 +0200

Hi,

we are using gzip 1.13 for builds on openSUSE Tumbleweed.
It is failing for the hardware architecture s390x with the following error message:
[  246s] gcc -DHAVE_CONFIG_H -I. -I./lib  -I./lib    -O2 -Wall -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=3 -fstack-protector-strong -funwind-tables -fasynchronous-unwind-tables -fstack-clash-protection -Werror=return-type -flto=auto -g -fomit-frame-pointer -W -Wall -Wno-unused-parameter -Wstrict-prototypes -Wpointer-arith -fPIE -DDFLTCC_LEVEL_MASK=0x7e -fprofile-generate -c -o dfltcc.o dfltcc.c
[  246s] dfltcc.c:86:17: error: expected declaration specifiers or '...' before numeric constant
[  246s]    86 |   char alignas (8) aligned;
[  246s]       |                 ^
[  246s] dfltcc.c:87:1: warning: no semicolon at end of struct or union
[  246s]    87 | };
[  246s]       | ^
[  246s] dfltcc.c:138:17: error: expected declaration specifiers or '...' before numeric constant
[  246s]   138 |   char alignas (8) aligned;
[  246s]       |                 ^
[  246s] dfltcc.c:139:1: warning: no semicolon at end of struct or union
[  246s]   139 | };
[  246s]       | ^
[  246s] make[2]: *** [Makefile:1945: dfltcc.o] Error 1

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From: Paul Eggert <eggert <at> cs.ucla.edu>
To: Sarah-Julia Kriesch <sarah-julia.kriesch <at> gmx.de>
Cc: 66709-done <at> debbugs.gnu.org
Subject: Re: bug#66709: gzip build fails on s390x because (version 1.13)
Date: Mon, 23 Oct 2023 14:45:21 -0700

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Thanks for the bug report. This bug was introduced during the flurry of 
patches just before 1.13 was released. Commit 
d826f7c04d824362dd1ba91c13d8f2c8b0996fff dated Sat Aug 19 11:23:45 2023 
-0700 removed Gnulib's stdalign module but did not add Gnulib's 
alignasof module that replaced stdalign. gzip needs this module because 
gzip.c and (as you noticed) dlftcc.c use alignas. We didn't notice the 
bug until now because gzip.c falls back on working code if alignas is 
absent, and we don't test on s390x.

I fixed the bug by installing the attached, which should appear in the 
next gzip release. In the meantime you should be able to build on s390x 
by compiling with 'gcc -Dalignas=_Alignas'.

[0001-maint-fix-port-to-s390x.patch (text/x-patch, attachment)]

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