I don't use Macs and have no real stake here but I believe the point Trev was making is that asking his end-users to download and install anything (let alone compile stuff) is going to result in a lot more issues around end-user support.
Do you think the average Mac user (the non-techie type) would understand this:
Due to bugs in 10.4's compiler, building the sources currently requires a Mac OS X 10.5 machine.
OpenMotif is the only required dependency. I installed OpenMotif using MacPorts -- if you install it using Fink, or manually, you must modify the ALT_MOTIF_DIR build setting.
The following additional make options are available:
* BSD_OVERRIDE_ARCH: Set to amd64 to build the 64-bit JVM
* DARWIN_SDK: Set to target a specific Mac OS X SDK
To target Tiger, set the MACOSX_DEPLOYMENT_TARGET environmental variable to "10.4", and pass DARWIN_SDK=/Developer/SDKs/MacOSX10.4u.sdk as a make flag.
I can't see how he's wrong - Esp. considering a lot of Mac users do pick the platform because they don't /have/ to know about that sort of stuff. If they wanted to play with binaries and compilers, they would've picked Linux :)