It has a feedback form at the bottom, so please suggest correcting
the error that x86_64 isn't listed as a valid arch. It's also odd
that "x86-64" has some specific options for it, but isn't a listed arch.
It might also make sense to revise gcc to produce x86_64 code by
default on 64 bit machines.
That's more complicated.
You should read 'man arch' first. It explains the selection order in
which arch'es are looked for.
Next, note that the 'gcc' command itself is only ppc/i386 2-way
universal on Leopard. You can see it with this command-line:
file `which gcc`
I mention this because of how gcc chooses a default target arch
according to which executable runs from the universal binary. For
example, use 'arch -ppc gcc' with no '-arch' option to gcc, and see
what arch the .o is compiled for.
Finally, a lot of Mac OS X developers use Xcode, which has defaults
for 4-way universal arch on release builds, but only native-arch on
debug builds. And devlopers who use makefiles or other build tools
usually do so with specific arch'es in mind. So in a practical
sense, it doesn't matter as much what the minimally adorned command-
line does, because it's not used often enough to make a convincing
case to change its default behavior. If you want to argue otherwise,
you should do so in your bug-report.
By the way, this would have been a lot shorter message thread if
you'd initially said you were using a 64-bit JVM. I'm partly at
fault for not requesting that detail in my first reply. I was misled
by the inconsistent lib name and the fact my machine defaults to 32-
bit Java. Nevertheless, these may be worthwhile for future reference:
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