Redirect stderr to /dev/null for initial perl invocation.

diff --git a/doc/Makefile.am b/doc/Makefile.am
index c7b098fcbac074d4855786e090f0359afdcf44cc..aacf1b419abba863888736b2dc7f0c4cacbdc095 100644 (file)
--- a/doc/Makefile.am
+++ b/doc/Makefile.am
@@ -33,7 +33,7 @@ check-texinfo:
        fail=0; \
        grep timezone $(srcdir)/*.texi && fail=1; \
        grep '\$$@"' $(srcdir)/*.texi && fail=1; \
-       $(PERL) -e 1 && { $(PERL) -ne \
+       $(PERL) -e 1 2> /dev/null && { $(PERL) -ne \
          '/\bPOSIX\b/ && !/\@acronym{POSIX}/ && !/^\* / || /{posix}/ and print,exit 1' \
          $(srcdir)/*.texi 2> /dev/null || fail=1; }; \
        exit $$fail