diff -Naur gst-plugins-base-1.18.4.org/meson.build gst-plugins-base-1.18.4.sw/meson.build
--- gst-plugins-base-1.18.4.org/meson.build	2022-03-11 05:47:56.152357080 +0000
+++ gst-plugins-base-1.18.4.sw/meson.build	2022-03-11 05:55:05.152357080 +0000
@@ -123,6 +123,7 @@
   [ 'powerpc', 'HAVE_CPU_PPC' ],
   [ 'powerpc64', 'HAVE_CPU_PPC64' ],
   [ 'alpha', 'HAVE_CPU_ALPHA' ],
+  [ 'sw_64', 'HAVE_CPU_SW_64' ],
   [ 'sparc', 'HAVE_CPU_SPARC' ],
   [ 'ia64', 'HAVE_CPU_IA64' ],
   [ 'hppa', 'HAVE_CPU_HPPA' ],