diff -Naur a/src/Makefile.in b/src/Makefile.in
--- a/src/Makefile.in
+++ b/src/Makefile.in
@@ -1018,7 +1018,7 @@
 
 errnos-sym.h: Makefile mkstrtable.awk errnos.in
 	$(AWK) -f $(srcdir)/mkstrtable.awk -v textidx=2 -v nogettext=1 \
-		-v prefix=GPG_ERR_ -v namespace=errnos_ \
+		-v prefix=GPG_ERR_ -v pkg_namespace=errnos_ \
 		$(srcdir)/errnos.in >$@
 
 # We depend on versioninfo.rc because that is build by config.status