When building RPM for Perl module XML::SAX, make install for XML::SAX fails with Can't locate XML/SAX/ParserFactory.pm error message

Given this %install section in the spec file:

        ...
        %prep
        %global
        %setup
        %build
        /usr/bin/perl/bin/perl Makefile.PL INSTALLDIRS=vendor
        make
        make test
        %install
        rm -rf $RPM_BUILD_ROOT
        make install DESTDIR=$RPM_BUILD_ROOT > %{_topdir}/%{name}.install.out
        ...

if you get this error:

        Executing(%install): /bin/sh -e /var/tmp/rpm-tmp.7597
        + umask 022
        + cd /users/red/tasks/perl-5.14-for-cel5.03/platform/vendor_perl/perl-XML-SAX/BUILD
        + cd perl-XML-SAX-0.99
        + rm -rf /users/red/tasks/perl-5.14-for-cel5.03/platform/vendor_perl/perl-XML-SAX/BUILDROOT/perl-XML-SAX-0.99-1.i386
        + make install DESTDIR=/users/red/tasks/perl-5.14-for-cel5.03/platform/vendor_perl/perl-XML-SAX/BUILDROOT/perl-XML-SAX-0.99-1.i386
        Can't locate XML/SAX/ParserFactory.pm in @INC (@INC contains: /usr/bin/perl-5.14.1/lib/eman_perl/i686-linux-thread-multi /usr/bin/perl-5.14.1/lib/eman_perl /usr/bin/perl-5.14.1/lib/vendor_perl/5.14.1/i686-linux-thread-multi /usr/bin/perl-5.14.1/lib/vendor_perl/5.14.1 /usr/bin/perl-5.14.1/lib/5.14.1/i686-linux-thread-multi /usr/bin/perl-5.14.1/lib/5.14.1 /usr/bin/perl-5.14.1/lib/site_perl .) at /usr/bin/perl-5.14.1/lib/vendor_perl/5.14.1/XML/SAX.pm line 18.
        BEGIN failed--compilation aborted at /usr/bin/perl-5.14.1/lib/vendor_perl/5.14.1/XML/SAX.pm line 18.
        Compilation failed in require.
        BEGIN failed--compilation aborted.
        make[1]: *** [install_sax_pureperl] Error 2
        error: Bad exit status from /var/tmp/rpm-tmp.7597 (%install)


        RPM build errors:
            Macro % has illegal name (%define)
            Bad exit status from /var/tmp/rpm-tmp.7597 (%install)
        make: *** [perl-XML-SAX-0.99-1.i386.rpm] Error 1

You need to add the line ...

        export PERL5LIB=${RPM_BUILD_ROOT}/usr/bin/perl-5.14.1/lib/vendor_perl/5.14.1

... so your spec looks like this ...

        %prep
        %global
        %setup
        %build
        /usr/bin/perl/bin/perl Makefile.PL INSTALLDIRS=vendor
        make
        make test
        %install
        rm -rf $RPM_BUILD_ROOT
        export PERL5LIB=${RPM_BUILD_ROOT}/usr/bin/perl-5.14.1/lib/vendor_perl/5.14.1
        make install DESTDIR=$RPM_BUILD_ROOT > %{_topdir}/%{name}.install.out