Rebuild man pages in RPM build

wdiff.spec

@@ -1,3 +1,5 @@
+%bcond_without rebuild_mans
+
 Name:           wdiff
 Version:        1.2.2
 Release:        17%{?dist}
@@ -17,7 +19,11 @@ BuildRequires:  libtool
 
 BuildRequires:  gettext-devel
 BuildRequires:  ncurses-devel
+
+BuildRequires:  help2man
 BuildRequires:  texinfo  
+BuildRequires:  texinfo-tex
+BuildRequires:  tex(latex)
 
 BuildRequires:  gnupg2
 
@@ -53,6 +59,11 @@ autoreconf -fiv
 %configure --enable-experimental="mdiff wdiff2 unify" 
 %make_build
 
+%if %{with rebuild_mans}
+rm -v man/mdiff.1 man/%{name}.1 man/%{name}2.1 man/unify.1
+%make_build -C man mdiff.1 %{name}.1 %{name}2.1 unify.1
+%endif
+
 
 %install
 %make_install
@@ -102,6 +113,7 @@ find '%{buildroot}' -type f -name '*gnulib.mo' -print -delete
 - Add a %%check section and run the tests
 - Add ncurses-devel BR for termcap/curses support
 - Add missing BR on gcc
+- Rebuild man pages in RPM build
 
 * Wed Jan 27 2021 Fedora Release Engineering <releng@fedoraproject.org> - 1.2.2-16
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_34_Mass_Rebuild