fat binary for Mac OSX 10.5.X

[john blair]

I am trying to build a fat binary(for i386 and x86_64) for curl-7.19.4. I tried 
building it with
    --disable-dependency-tracking \
    CFLAGS="-arch i386 -arch x86_64" \
    LDFLAGS="-arch i386 -arch x86_64"

but got 
../include/curl/curlrules.h:134: error: size of array ‘__curl_rule_01__’ is 
negative


I have successfully built a fat binary for curl 7.18.2. Has any one tried 
building it with 7.19.4?