===>  Building for webalizer-2.1.10_12
cc -L/usr/local/lib -L/usr/local/lib -o webalizer webalizer.o hashtab.o linklist.o preserve.o parser.o output.o dns_resolv.o graphs.o -lgd -lpng -lz -lm
graphs.o(.text+0x8c4): In function `pie_chart':
: undefined reference to `gdImagePng'
graphs.o(.text+0xedf): In function `day_graph3':
: undefined reference to `gdImagePng'
graphs.o(.text+0x1b7c): In function `month_graph6':
: undefined reference to `gdImagePng'
graphs.o(.text+0x28d3): In function `year_graph6x':
: undefined reference to `gdImagePng'
*** Error code 1

Stop in /usr/ports/www/webalizer/work/webalizer-2.01-10.
*** Error code 1