Thanks for the detailed explanation. I did a fresh install of the OS, and re-installed Perl 5.8.1, but this time with the '-Duseshrplib' option. After installation, I confirmed that I had 'libperl.so' in '/usr/local/lib/perl5/5.8.1/i386-freebsd/CORE'.
Then I re-installed SSL/mod_perl/Apache (without the patch), but got the same error: --- gcc -funsigned-char -DMOD_SSL=208115 -DMOD_PERL -DUSE_PERL_SSI -DHAS_FPSETMASK -DHAS_FLOATINGPOINT_H -fno-strict-aliasing -DEAPI -DUSE_EXPAT -I./lib/expat-lite -DNO_DL_NEEDED `./apaci` -L/usr/lib -o httpd buildmark.o modules.o modules/standard/libstandard.a modules/ssl/libssl.a modules/perl/libperl.a main/libmain.a ./os/unix/libos.a ap/libap.a lib/expat-lite/libexpat.a -lcrypt -lssl -lcrypto -Wl,-R/usr/local/lib/perl5/5.8.1/i386-freebsd/CORE -Wl,-E /usr/local/lib/perl5/5.8.1/i386-freebsd/auto/DynaLoader/DynaLoader.a -L/usr/local/lib/perl5/5.8.1/i386-freebsd/CORE -lperl -lm -lcrypt -lutil -lc modules/perl/libperl.a(mod_perl.o): In function `perl_restart_handler': mod_perl.o(.text+0x23b): undefined reference to `Perl_get_sv' modules/perl/libperl.a(mod_perl.o): In function `perl_restart': mod_perl.o(.text+0x2c7): undefined reference to `Perl_get_sv' mod_perl.o(.text+0x2fe): undefined reference to `Perl_eval_pv' mod_perl.o(.text+0x31a): undefined reference to `Perl_sv_setsv_flags' --- I assumed that this: -L/usr/local/lib/perl5/5.8.1/i386-freebsd/CORE -lperl ... would now be OK on my system. I have not tried the patch yet (after reading your explanation, it seemed better to re-build Perl as a shared library, which would give me the benefits of a shared library, and allow me to avoid a patch). Updated 'perl -V' output is at http://www.bigtrouble.com/perl_minus_V_shared_output.html