Re: Bug#1127346: src:sprng: fails to migrate to testing for too long: FTBFS on armhf

On 7 February 2026 at 23:19, Peter Green wrote:
| On 07/02/2026 08:45, Paul Gevers wrote:
| 
| > ∙ ∙ Missing build on armhf
| 
| The culrpit appears to be the following change.
| -DEB_HOST_ARCH := $(shell dpkg-architecture -qDEB_HOST_ARCH)
| -ifeq ($(DEB_HOST_ARCH),armhf)
| +arch            := $(shell dpkg-architecture -qDEB_BUILD_ARCH_CPU)
| +ifeq ($(arch),armhf)

Yes and no. You very selectively quoted here, the next two lines matter as we
only use this in a (desparate) attempt to get the compiler flags right. It is
not used anywhere else so it does not really matter.
 
| This change appears to be wrong in two ways.
| 
| 1. Checking the "host" arch (arch you are building for) not the "build" arch (arch you are building on) is generally what you want for compiler flags.
| 2. DEB_{BUILD|HOST}_ARCH_CPU on armhf is "arm" not "armhf".
| 
| With an arm porter hat on, I suggest reverting this change.

As you are an arm porter, could I ask you to instead log at one of the actual
failures eg via the last build attempt there at

https://buildd.debian.org/status/logs.php?pkg=sprng&ver=2.0a-17&arch=armhf

which gets us to

https://buildd.debian.org/status/fetch.php?pkg=sprng&arch=armhf&ver=2.0a-17&stamp=1767797253&raw=0

where we see

/tmp/ccTWsmvQ.s: Assembler messages:
/tmp/ccTWsmvQ.s:1735: Error: thumb conditional instruction should be in IT block -- `addcs r9,r9,#65536'
/tmp/ccTWsmvQ.s:1750: Error: thumb conditional instruction should be in IT block -- `addcs r8,r8,#65536'
/tmp/ccTWsmvQ.s:1785: Error: thumb conditional instruction should be in IT block -- `addcs r8,r8,#65536'
/tmp/ccTWsmvQ.s:1817: Error: thumb conditional instruction should be in IT block -- `addcs lr,lr,#65536'

I have no idea how to overcome this, so for now I turned armhf off.

This is an old package I added way back when we had no other parallel RNG for
R. It is no longer used by R (packages) (at either CRAN or in Debian) so I
could just remove it. Before I do so I would not mind sorting out why builds
that worked for so many years now fail.

Dirk

-- 
dirk.eddelbuettel.com | @eddelbuettel | [email protected]