Donnie Berkholz wrote:
I thought f95 was not only the default, but the only choice, and f77 was entirely gone.
Maybe ... it wasn't entirely clear to me from the discussion, which was relative to Atlas and (shudder) Fedora Core 4, where GCC 4 is the default.
gcc is slotted so you can have many versions installed at the same time and switch with gcc-config. Just try unmasking in package.unmask and go.
In the case of Atlas, Clint Whaley tried a couple of tests with GCC 4 and discovered on some pretty pure and simple scientific code, GCC 4 was quite a bit slower than 3.4 on an x86-32. He says, "stick with 3.4 for Atlas until 4 gets better". I don't have access to an AMD 64-bit machine and I don't have (legitimate, anyhow) access to an Intel x86-64 machine. So for now, anyhow, I can wait until all 10,000+ packages in Portage compile and test out with GCC 4 <ducking>
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