build: use 'check-local' to extend the 'check' target

* doc/Makefile.am (check-local): Here, by making this depend
on 'check-texinfo' ...
(check): ... rather than this.  While the old usage worked, it
did so for an implementation detail rather than a documented
behaviour, so relying on that was riskier a "unclean".

diff --git a/doc/Makefile.am b/doc/Makefile.am
index 4e5150fc2aab74202a1303dfb6c5660f30851a98..121c7cc6de4bf06c2974e8fae6d39826dfa074b7 100644 (file)
--- a/doc/Makefile.am
+++ b/doc/Makefile.am
@@ -126,4 +126,4 @@ sc-lower-case-var:
        $(AM_V_GEN)$(PERL) -e 1 || { echo $@: skipping test; exit 0; }; \
          $(PERL) -lne $(find_upper_case_var) $(doc_srcdir)/*.texi
 
-check: check-texinfo
+check-local: check-texinfo