It is almost certainly an already detected 
problem. /sysutils/gkrellm doesn't build 
under NetBSD i386 3.99.18:

cc -O2 -I/usr/pkg/include -I/usr/include -DGLX_GLXEXT_LEGACY -I/usr/pkg/xorg/include -I/usr/pkg/include/freetype2   -Wall -Werror -I.. `/mnt/usr/pkgsrc/sysutils/gkrellm/work/.tools/bin/pkg-config --cflags gtk+-2.0 gthread-2.0`   -DENABLE_NLS -DLOCALEDIR=\"/usr/pkg/share/locale\" -I/usr/pkg/include -I/usr/include -DGLX_GLXEXT_LEGACY -I/usr/pkg/xorg/include -I/usr/pkg/include/freetype2  -c -o sysdeps-unix.o sysdeps-unix.c
gmake[1]: Leaving directory `/mnt/usr/pkgsrc/sysutils/gkrellm/work/gkrellm-2.2.9/src'
*** Error code 2

Stop.
make: stopped in /mnt/usr/pkgsrc/sysutils/gkrellm