build-sys: define arm as secondary architecture for arm64

Completely unstested. Fixes #4862.

diff --git a/src/basic/architecture.h b/src/basic/architecture.h
index 5a77c31932bb337601712edb1899ae0dc47e8cfa..b329df2f6d0c2709c29d33777ca974cbc73c49b9 100644 (file)
--- a/src/basic/architecture.h
+++ b/src/basic/architecture.h
@@ -150,6 +150,7 @@ int uname_architecture(void);
 #  else
 #    define native_architecture() ARCHITECTURE_ARM64
 #    define LIB_ARCH_TUPLE "aarch64-linux-gnu"
+#    define SECONDARY_ARCHITECTURE ARCHITECTURE_ARM
 #  endif
 #elif defined(__arm__)
 #  if __BYTE_ORDER == __BIG_ENDIAN