IBM Announces Mac OS X Compilers - MacRumors
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IBM Announces Mac OS X Compilers

IBM has announced the final versions of the XL C, XL C++, and Fortran compilers for Mac OS X.

These PowerPC 970 (G5) processor optimized compilers were previously released in Beta form and showed promising performance advantages.
("Compilers" take source code (programming language) and converts it into a binary (actual application) which the processor (PowerPC 970) can then interpret.)

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