Differences between the zani and zandonai build hosts?

Peter Pentchev <[email protected]> Fri, 30 Dec 2022 09:42:43 +0200

Newsgroups	gmane.linux.debian.ports.s390
Message-ID	<[email protected]>

Hi,

First of all, thanks a lot for all your work on porting Debian to
the IBM z* systems!

Are there any differences in the hardware or software configuration of
the zandonai and zani Debian buildd hosts? There is a build-time test for
the libzstd package that failed the only time when a 1.5.0 version of
the package was built on the zani host, but it built successfully on
the zandonai one. There were no significant differences between
the four uploads of libzstd-1.5.0 - the changes that were made should have
prevented a full-on FTBFS if they were applicable to the compiler/libc
at all.

  https://buildd.debian.org/status/logs.php?pkg=libzstd&arch=s390x

If somebody wants to reproduce this particular problem, I'm attaching
a patch that only runs the thread pool test. Something interesting in
the libzstd source: this test is specifically not run when libzstd is
being cross-built using qemu. To be completely honest, I myself do not
fully understand exactly what the test is supposed to do, but I wonder
if the reason they don't run it when using qemu is that it might be
influenced by the number of execution units (CPUs, cores, virtual cores,
etc) that the build processes are allowed to use.

Thanks in advance for your time, and keep up the great work!

G'luck,
Peter

-- 
Peter Pentchev  [email protected] [email protected] [email protected]
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pool-test-only.patch (text/plain, 403 B)

--- a/tests/Makefile
+++ b/tests/Makefile
@@ -297,7 +297,7 @@
 fuzztest: test-fuzzer test-zstream test-decodecorpus
 
 .PHONY: test
-test: test-zstd test-fullbench test-fuzzer test-zstream test-invalidDictionaries test-legacy test-decodecorpus
+# test: test-zstd test-fullbench test-fuzzer test-zstream test-invalidDictionaries test-legacy test-decodecorpus
 ifeq ($(QEMU_SYS),)
 test: test-pool
 endif

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