Build failures on a mac

[cmcknight]

1. Homebrew doesn't have a recipe for zlib
2. Build failed with the following:

creating preprocess.awk
dirs="platform share contrib doc";
for i in $dirs; do
if (cd $i && make bootstrap);
then true;
else exit 1;
fi;
done
dirs="dss emulator wish tools";
for i in $dirs; do
if (cd $i && make bootstrap);
then true;
else exit 1;
fi;
done
g++ -march=i386 -mtune=i386 -O3 -fomit-frame-pointer -funsigned-char -I. -I/Users/chuck/dev/mozart/mozart/platform/dss/include -Wdisabled-optimization -Wuninitialized -Wall -Wold-style-cast -Woverloaded-virtual -Wshadow -Wswitch -Wreturn-type -Wunused -fPIC -c -o base.o /Users/chuck/dev/mozart/mozart/platform/dss/src/base.cc
/Users/chuck/dev/mozart/mozart/platform/dss/src/base.cc:1: error: CPU you selected does not support x86-64 instruction set
/Users/chuck/dev/mozart/mozart/platform/dss/src/base.cc:1: error: CPU you selected does not support x86-64 instruction set
make[2]: *** [base.o] Error 1
make[1]: *** [bootstrap] Error 1
make: *** [bootstrap] Error 1

[cmcknight]

Should mention system config:

iMac, OX X 10.6.7, 3.06 GHz Intel Core 2 Duo, 8 GB RAM