Someone help please. I am installing Koha on Debian and now I'm getting the following error koha:/# tar xvzf Net-Z3950-ZOOM-1.21.tar.gz Net-Z3950-ZOOM-1.21/ Net-Z3950-ZOOM-1.21/samples/ Net-Z3950-ZOOM-1.21/samples/zoom/ Net-Z3950-ZOOM-1.21/samples/zoom/trivial-async.pl Net-Z3950-ZOOM-1.21/samples/zoom/zdump.pl Net-Z3950-ZOOM-1.21/samples/zoom/async.pl Net-Z3950-ZOOM-1.21/samples/zoom/zoomscan.pl Net-Z3950-ZOOM-1.21/samples/zoom/zhello.pl Net-Z3950-ZOOM-1.21/samples/zoom/zoomtst1.pl Net-Z3950-ZOOM-1.21/samples/zoom/zselect Net-Z3950-ZOOM-1.21/samples/zoom/update.pl Net-Z3950-ZOOM-1.21/samples/zoom/zoomtst3.pl Net-Z3950-ZOOM-1.21/samples/README Net-Z3950-ZOOM-1.21/samples/net-z3950/ Net-Z3950-ZOOM-1.21/samples/net-z3950/zoomtst1.pl Net-Z3950-ZOOM-1.21/samples/records/ Net-Z3950-ZOOM-1.21/samples/records/esdd0006.grs Net-Z3950-ZOOM-1.21/samples/ccl/ Net-Z3950-ZOOM-1.21/samples/ccl/default.bib Net-Z3950-ZOOM-1.21/samples/cql/ Net-Z3950-ZOOM-1.21/samples/cql/pqf.properties Net-Z3950-ZOOM-1.21/samples/net-z3950-zoom/ Net-Z3950-ZOOM-1.21/samples/net-z3950-zoom/async.pl Net-Z3950-ZOOM-1.21/samples/net-z3950-zoom/zoomtst1.pl Net-Z3950-ZOOM-1.21/samples/net-z3950-zoom/zoomtst3.pl Net-Z3950-ZOOM-1.21/README Net-Z3950-ZOOM-1.21/Changes Net-Z3950-ZOOM-1.21/META.yml Net-Z3950-ZOOM-1.21/MANIFEST Net-Z3950-ZOOM-1.21/ZOOM.xs Net-Z3950-ZOOM-1.21/MANIFEST.SKIP Net-Z3950-ZOOM-1.21/Makefile.PL Net-Z3950-ZOOM-1.21/t/ Net-Z3950-ZOOM-1.21/t/29-events.t Net-Z3950-ZOOM-1.21/t/11-option-callback.t Net-Z3950-ZOOM-1.21/t/15-scan.t Net-Z3950-ZOOM-1.21/t/16-packages.t Net-Z3950-ZOOM-1.21/t/13-resultset.t Net-Z3950-ZOOM-1.21/t/24-sorting.t Net-Z3950-ZOOM-1.21/t/17-logging.t Net-Z3950-ZOOM-1.21/t/20-options.t Net-Z3950-ZOOM-1.21/t/12-query.t Net-Z3950-ZOOM-1.21/t/10-options.t Net-Z3950-ZOOM-1.21/t/1-Net-Z3950-ZOOM.t Net-Z3950-ZOOM-1.21/t/22-query.t Net-Z3950-ZOOM-1.21/t/27-logging.t Net-Z3950-ZOOM-1.21/t/25-scan.t Net-Z3950-ZOOM-1.21/t/19-events.t Net-Z3950-ZOOM-1.21/t/14-sorting.t Net-Z3950-ZOOM-1.21/t/28-charset.t Net-Z3950-ZOOM-1.21/t/23-resultset.t Net-Z3950-ZOOM-1.21/t/26-packages.t Net-Z3950-ZOOM-1.21/t/18-charset.t Net-Z3950-ZOOM-1.21/t/2-ZOOM.t Net-Z3950-ZOOM-1.21/t/21-option-callback.t Net-Z3950-ZOOM-1.21/typemap Net-Z3950-ZOOM-1.21/lib/ Net-Z3950-ZOOM-1.21/lib/ZOOM.pm Net-Z3950-ZOOM-1.21/lib/ZOOM.pod Net-Z3950-ZOOM-1.21/lib/Net/ Net-Z3950-ZOOM-1.21/lib/Net/Z3950/ Net-Z3950-ZOOM-1.21/lib/Net/Z3950/ZOOM.pm Net-Z3950-ZOOM-1.21/lib/Net/Z3950.pm koha:/# cd Net-Z3950-ZOOM-1.21 koha:/Net-Z3950-ZOOM-1.21# perl Makefile.PL Checking if your kit is complete... Looks good Writing Makefile for Net::Z3950::ZOOM koha:/Net-Z3950-ZOOM-1.21# make cp lib/Net/Z3950/ZOOM.pm blib/lib/Net/Z3950/ZOOM.pm cp lib/ZOOM.pod blib/lib/ZOOM.pod cp lib/ZOOM.pm blib/lib/ZOOM.pm cp lib/Net/Z3950.pm blib/lib/Net/Z3950.pm /usr/bin/perl /usr/share/perl/5.8/ExtUtils/xsubpp -typemap /usr/share/perl/5.8/ExtUtils/typemap -typemap typemap ZOOM.xs > ZOOM.xsc && mv ZOOM.xsc ZOOM.c cc -c -pthread -DYAZ_POSIX_THREADS=1 -DYAZ_HAVE_XML2=1 -DYAZ_HAVE_XSLT=1 -DYAZ_HAVE_EXSLT=1 -I/usr/include/libxml2 -D_REENTRANT -D_GNU_SOURCE -DTHREADS_HAVE_PIDS -DDEBIAN -fno-strict-aliasing -pipe -I/usr/local/include -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -O2 -DVERSION=\"1.21\" -DXS_VERSION=\"1.21\" -fPIC "-I/usr/lib/perl/5.8/CORE" ZOOM.c Running Mkbootstrap for Net::Z3950::ZOOM () chmod 644 ZOOM.bs rm -f blib/arch/auto/Net/Z3950/ZOOM/ZOOM.so cc -shared -L/usr/local/lib ZOOM.o -o blib/arch/auto/Net/Z3950/ZOOM/ZOOM.so \ -lyaz -lexslt -lxslt -lgcrypt -lgpg-error -lxml2 -lpthread -lz -lm -lpthread -lssl -lcrypto -ldl -lwrap -lnsl \ /usr/bin/ld: cannot find -lgcrypt collect2: ld returned 1 exit status make: *** [blib/arch/auto/Net/Z3950/ZOOM/ZOOM.so] Error 1 koha:/Net-Z3950-ZOOM-1.21# koha:/Net-Z3950-ZOOM-1.21# lgcrypt -bash: lgcrypt: command not found koha:/Net-Z3950-ZOOM-1.21# lgcrypt -bash: lgcrypt: command not found koha:/Net-Z3950-ZOOM-1.21# koha:/Net-Z3950-ZOOM-1.21# What could be the problem and how do l solve it