-(
-cd $RPM_BUILD_ROOT%{_datadir}/ca-certificates
-find . -name '*.crt' -print0 | xargs -0 cat
-) > $RPM_BUILD_ROOT%{certsdir}/ca-certificates.crt
+find $RPM_BUILD_ROOT%{_datadir}/ca-certificates -name '*.crt' | while read cert ; do
+ cat "$cert" >> $RPM_BUILD_ROOT%{certsdir}/ca-certificates.crt
+ echo >>$RPM_BUILD_ROOT%{certsdir}/ca-certificates.crt
+done