=> Bootstrap dependency digest>=20010302: found digest-20111104
=> Bootstrap dependency fetch-[0-9]*: found fetch-1.7
WARNING: [license.mk] Every package should define a LICENSE.
=> Checksum SHA1 OK for CriticalMass-1.0.2.tar.bz2
=> Checksum RMD160 OK for CriticalMass-1.0.2.tar.bz2
===> Installing dependencies for criticalmass-1.0.2nb5
=> Build dependency libtool-base>=2.2.6bnb3: found libtool-base-2.2.6bnb5
=> Build dependency kbproto>=1.0.2: found kbproto-1.0.5
=> Build dependency xproto>=7.0.9: found xproto-7.0.18
=> Build dependency xcb-proto>=1.4: found xcb-proto-1.6
=> Build dependency renderproto>=0.9.3nb1: found renderproto-0.11
=> Build dependency randrproto>=1.2.0: found randrproto-1.3.1
=> Build dependency checkperms>=1.1: found checkperms-1.11
=> Full dependency SDL>=1.2.10: found SDL-1.2.15nb1
=> Full dependency zlib>=1.2.3: found zlib-1.2.3
=> Full dependency SDL_image>=1.2.12: found SDL_image-1.2.12nb1
=> Full dependency SDL_mixer>=1.2.6nb5: found SDL_mixer-1.2.12nb2
===> Overriding tools for criticalmass-1.0.2nb5
===> Extracting for criticalmass-1.0.2nb5
===> Patching for criticalmass-1.0.2nb5
=> Applying pkgsrc patches for criticalmass-1.0.2nb5
===> Creating toolchain wrappers for criticalmass-1.0.2nb5
===> Configuring for criticalmass-1.0.2nb5
=> Modifying GNU configure scripts to avoid --recheck
=> Replacing config-guess with pkgsrc versions
=> Replacing config-sub with pkgsrc versions
=> Replacing install-sh with pkgsrc version
=> Checking for portability problems in extracted files
checking build system type... x86_64-unknown-linux-gnu
checking host system type... x86_64-unknown-linux-gnu
checking target system type... x86_64-unknown-linux-gnu
checking for a BSD-compatible install... /usr/bin/install -c -o pbulk -g pbulk
checking whether build environment is sane... yes
checking for gawk... /usr/bin/awk
checking whether make sets $(MAKE)... yes
checking for x86_64-unknown-linux-gcc... gcc
checking for C compiler default output file name... a.out
checking whether the C compiler works... yes
checking whether we are cross compiling... no
checking for suffix of executables... 
checking for suffix of object files... o
checking whether we are using the GNU C compiler... yes
checking whether gcc accepts -g... yes
checking for gcc option to accept ANSI C... none needed
checking for style of include used by make... GNU
checking dependency style of gcc... none
checking for x86_64-unknown-linux-g++... g++
checking whether we are using the GNU C++ compiler... yes
checking whether g++ accepts -g... yes
checking dependency style of g++... none
checking for x86_64-unknown-linux-ranlib... no
checking for ranlib... ranlib
checking for an ANSI C-conforming const... yes
checking for main in -lSDL... yes
checking for main in -lSDL_image... yes
checking for main in -lSDL_mixer... yes
checking for main in -lpng... no
configure: error: libpng is needed
*** Error code 1

Stop.
bmake: stopped in /usr/pkgsrc/games/criticalmass
*** Error code 1

Stop.
bmake: stopped in /usr/pkgsrc/games/criticalmass