warnings compiling xmlreader program using libxml2

[Pedro Dinis]

aCC -c -I/usr/local/include/libxml2 reader1.c

aCC -o reader reader1.o -L/usr/local/lib/hpux32 -lxml2

[]-pedro:/home/pedro/XML_READER>aCC -o reader reader1.o -L/usr/local/lib/hpux3>
ld: (Warning) Unsatisfied symbol "deflateEnd" in file /usr/local/lib/hpux32/libxml2.so
ld: (Warning) Unsatisfied symbol "gzrewind" in file /usr/local/lib/hpux32/libxml2.so
ld: (Warning) Unsatisfied symbol "inflate" in file /usr/local/lib/hpux32/libxml2.so
ld: (Warning) Unsatisfied symbol "deflate" in file /usr/local/lib/hpux32/libxml2.so
ld: (Warning) Unsatisfied symbol "gzopen" in file /usr/local/lib/hpux32/libxml2.so
ld: (Warning) Unsatisfied symbol "gzread" in file /usr/local/lib/hpux32/libxml2.so
ld: (Warning) Unsatisfied symbol "inflateEnd" in file /usr/local/lib/hpux32/libxml2.so
ld: (Warning) Unsatisfied symbol "deflateInit2_" in file /usr/local/lib/hpux32/libxml2.so
ld: (Warning) Unsatisfied symbol "inflateInit2_" in file /usr/local/lib/hpux32/libxml2.so
ld: (Warning) Unsatisfied symbol "gzclose" in file /usr/local/lib/hpux32/libxml2.so
ld: (Warning) Unsatisfied symbol "crc32" in file /usr/local/lib/hpux32/libxml2.so
ld: (Warning) Unsatisfied symbol "gzwrite" in file /usr/local/lib/hpux32/libxml2.so
ld: (Warning) Unsatisfied symbol "gzdopen" in file /usr/local/lib/hpux32/libxml2.so
13 warnings.

[Pedro Dinis]

[]-pedro:/home/pedro/XML_READER>aCC -o reader reader1.o -L/usr/local/lib/hpux32 -lxml2 -lz

i was missing -lz