Improve build: add <unistd.h> and use -O2 instead of -O3
authorLinus Torvalds <torvalds@ppc970.osdl.org>
Wed, 20 Apr 2005 20:00:08 +0000 (13:00 -0700)
committerLinus Torvalds <torvalds@ppc970.osdl.org>
Wed, 20 Apr 2005 20:00:08 +0000 (13:00 -0700)
(Nobody should use -O3. It just makes bad inlining decisions).

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