32 bit VM on 64bit host (bulk_extractor)

g++ -pthread -I/usr/local/include  -DUTC_OFFSET=-0400  -O2 -march=i486 -mtune=i686 -I.. -I. -I.. -I../../_build -c `basename scan_gps.o .o`.cpp
g++  -O2 -march=i486 -mtune=i686  -L/usr/local/lib  -o bulk_extractor bulk_extractor.o threadpool.o word_and_context_list.o histogram.o utils.o support.o base64_forensic.o feature_recorder.o feature_recorder_set.o image_process.o image_process_fts.o sbuf.o md5.o plugin.o scan_ccns2.o scan_find.o scan_net.o scan_wordlist.o scan_exif.o scan_base64.o xml.o scan_be_exif.o exif_reader.o exif_entry.o scan_zip.o scan_gzip.o scan_pdf.o scan_aes.o scan_json.o scan_winprefetch.o scan_hiberfile.o pyxpress.o scan_email.o scan_accts.o scan_kml.o scan_gps.o  -lexpat -lssl -lcrypto -lssl -lcrypto -lz -ldl   -lexiv2
threadpool.o: In function `threadpool::threadpool(int, feature_recorder_set&, xml&)':
threadpool.cpp:(.text+0x6f2): undefined reference to `pthread_create'
collect2: error: ld returned 1 exit status
make[2]: *** [bulk_extractor] Error 1
make[2]: Leaving directory `/tmp/SBo/bulk_extractor-1.2.2/src'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/tmp/SBo/bulk_extractor-1.2.2'
make: *** [all] Error 2