Fix manpages with absolute symlinks.
PR: 224230

--- src/Makefile.am.orig	2020-03-26 14:08:37 UTC
+++ src/Makefile.am
@@ -24,7 +24,7 @@ install-data-hook:
 	for a in dcadec extract_dca; do \
 		oldname=`echo "$$a" | sed -e 's/ca/ts/' | sed '$(transform)'` ; \
 		name=`echo "$$a" | sed '$(transform)'` ; \
-		ln -sf "$(man1dir)/$${name}.1" "$(DESTDIR)$(man1dir)/$${oldname}.1" ; \
+		install -l rs "$(DESTDIR)$(man1dir)/$${name}.1" "$(DESTDIR)$(man1dir)/$${oldname}.1" ; \
 	done
 
 uninstall-hook: