Architecture specific change in rpms/polyml.git

The package rpms/polyml.git has added or updated architecture specific content in its
spec file (ExclusiveArch/ExcludeArch or %ifarch/%ifnarch) in commit(s):
https://src.fedoraproject.org/cgit/rpms/polyml.git/commit/?id=8ff3f45240ef29....

Change:
+%ifarch x86_64

Thanks.

Full change:
============

commit 8ff3f45240ef29585fb9f568eb24a83529ff6ef2
Author: Jerry James 
Date:   Wed Jul 22 12:08:58 2020 -0600

The --enable-compact32bit option can only be used on x86_64.

diff --git a/polyml.spec b/polyml.spec
index 2e57f27..37a7e0d 100644
--- a/polyml.spec
+++ b/polyml.spec
@@ -68,7 +68,7 @@ sed -i '2iraise NotApplicable;' Tests/Succeed/Test174.ML
 # is bad news for people running SELinux.  The execstack flag is not really
 # needed, so we go through the contortions below to keep it off.
 %configure --enable-shared --disable-static --with-system-libffi \
-%if 0%{?__isa_bits} == 64
+%ifarch x86_64
   --enable-compact32bit \
 %endif
   CPPFLAGS="-D_GNU_SOURCE" \