Bug#907829: p4est: FTBFS on single CPU machines (?)

[Graham Inggs]

Hi Santiago

On 2 September 2018 at 19:21, Santiago Vila <sanvila at debian.org> wrote:
> My guess is that this is a bug in p4est but it's triggered by a build depends
> which changed behaviour somewhere between 2017-12-24 (where version 1.1-5
> still built ok for me in buster) and 2018-06-03 (where it did not anymore).

Yes, openmpi flipped the default for oversubscription *again*, see #849974.

Would you please check whether the following change to debian/rules
fixes it for you?

--- a/debian/rules
+++ b/debian/rules
@@ -3,6 +3,7 @@
 include /usr/share/dpkg/pkg-info.mk

 export OMPI_MCA_plm_rsh_agent=/bin/false
+export OMPI_MCA_rmaps_base_oversubscribe=1

 %:
     dh $@

Regards
Graham