Fix build flags injection (bug #1573086).

dos2unix.spec

@@ -1,7 +1,7 @@
 Summary: Text file format converters
 Name: dos2unix
 Version: 7.4.0
-Release: 2%{?dist}
+Release: 3%{?dist}
 Group: Applications/Text
 License: BSD
 URL: http://waterlan.home.xs4all.nl/dos2unix.html
@@ -18,7 +18,7 @@ vice versa.
 %setup -q
 
 %build
-make %{?_smp_mflags}
+make %{?_smp_mflags} LDFLAGS="%{build_ldflags}"
 
 %install
 make DESTDIR=$RPM_BUILD_ROOT install
@@ -39,6 +39,9 @@ rm -rf $RPM_BUILD_ROOT%{_docdir}
 %{_mandir}/man1/*.1*
 
 %changelog
+* Tue May 08 2018 Tim Waugh <twaugh@redhat.com> - 7.4.0-3
+- Fix build flags injection (bug #1573086).
+
 * Wed Feb 07 2018 Fedora Release Engineering <releng@fedoraproject.org> - 7.4.0-2
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_28_Mass_Rebuild