tiff 3.9.1_0 build failed under Mac OS X 10.6

[james.applemac@…]

OS: Mac OS X 10.6 xcode: 3.2 MacPrts:1.8.0_0

following are the error messages: ===================== port -uRf upgrade tiff Port command started with PID 23727 ---> Computing dependencies for tiff ---> Fetching tiff ---> Verifying checksum(s) for tiff ---> Extracting tiff ---> Applying patches to tiff ---> Configuring tiff Error: Target org.macports.configure returned: configure failure: shell command " cd "/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_ports_graphics_tiff/work/tiff-3.9.1" && ./configure --prefix=/opt/local --mandir=/opt/local/share/man --with-docdir=/opt/local/share/doc/tiff-3.9.1 --with-jpeg-include-dir=/opt/local/include --with-jpeg-lib-dir=/opt/local/lib --with-zlib-include-dir=/opt/local/include --with-zlib-lib-dir=/opt/local/lib --with-apple-opengl-framework " returned error 1 Command output: checking for int8... no checking for int16... no checking for int32... no checking size of signed long... 8 checking size of unsigned long... 8 checking size of signed long long... 8 checking size of unsigned long long... 8 checking for signed 64-bit type... signed long checking for unsigned 64-bit type... unsigned long checking for floor... yes checking for isascii... yes checking for memmove... yes checking for memset... yes checking for mmap... yes checking for pow... yes checking for setmode... yes checking for sqrt... yes checking for strchr... yes checking for strrchr... yes checking for strstr... yes checking for strtol... yes checking for getopt... yes checking for strcasecmp... yes checking for strtoul... yes checking for lfind... yes checking native cpu bit order... lsb2msb checking for special C compiler options needed for large files... no checking for _FILE_OFFSET_BITS value needed for large files... no checking for inflateEnd in -lz... no configure: error: Zlib library not found at /opt/local/lib Error: Unable to upgrade port: 1 ---> Executing: /opt/local/bin/port -uRf upgrade tiff