docs: generate gnuconfig man pages properly

Resolves: #1162227
Version: 2.69-16

autoconf.spec

@@ -1,7 +1,7 @@
 Summary:    A GNU tool for automatically configuring source code
 Name:       autoconf
 Version:    2.69
-Release:    15%{?dist}
+Release:    16%{?dist}
 License:    GPLv2+ and GFDL
 Group:      Development/Tools
 Source0:    http://ftpmirror.gnu.org/autoconf/autoconf-%{version}.tar.xz
@@ -23,6 +23,11 @@ BuildRequires:      perl(Data::Dumper)
 # from f19, Text::ParseWords is not the part of 'perl' package
 BuildRequires:      perl(Text::ParseWords)
 
+# %%configure replaces config.guess/config.sub for us, which confuses autoconf
+# build system and it produces empty man pages for those scripts if help2man is
+# not installed
+BuildRequires:      help2man
+
 %if %{with check}
 # For extended testsuite coverage
 BuildRequires:      gcc-gfortran
@@ -95,6 +100,9 @@ fi
 %doc AUTHORS COPYING* ChangeLog NEWS README THANKS TODO
 
 %changelog
+* Wed Nov 12 2014 Pavel Raiskup <praiskup@redhat.com> - 2.69-16
+- avoid generating empty man pages for gnuconfig (#1162227)
+
 * Sat Jun 07 2014 Fedora Release Engineering <rel-eng@lists.fedoraproject.org> - 2.69-15
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_21_Mass_Rebuild