While working on reproducible builds for openSUSE,
(sponsored by the NLnet NGI0 fund), I found that
our openblas binaries record the build machine CPU type in openblas.pc:

--- old//usr/lib64/openblas-serial/pkgconfig/openblas.pc        
+++ new//usr/lib64/openblas-serial/pkgconfig/openblas.pc
@@ -3,7 +3,7 @@
 libnamesuffix=
 libsuffix=
 includedir=/usr/include/openblas
-openblas_config= USE_64BITINT= DYNAMIC_ARCH=1 DYNAMIC_OLDER= NO_CBLAS=
NO_LAPACK= NO_LAPACKE= NO_AFFINITY=1 USE_OPENMP=0 HASWELL MAX_THREADS=64
+openblas_config= USE_64BITINT= DYNAMIC_ARCH=1 DYNAMIC_OLDER= NO_CBLAS=
NO_LAPACK= NO_LAPACKE= NO_AFFINITY=1 USE_OPENMP=0 UNKNOWN MAX_THREADS=64
 version=0.3.27
 extralib=-lm -lgfortran -lm -lgfortran
 Name: openblas

Bug ID	1228177
Summary	openblas: records build machine CPU type
Classification	openSUSE
Product	openSUSE Tumbleweed
Version	Current
Hardware	Other
OS	All
Status	NEW
Severity	Normal
Priority	P5 - None
Component	Other
Assignee	eich@suse.com
Reporter	bwiedemann@suse.com
QA Contact	qa-bugs@suse.de
Target Milestone	---
Found By	Development
Blocker	---