Messages in this thread | | | Date | Thu, 1 Apr 2004 14:39:08 -0800 | From | Joe Buck <> | Subject | Re: Linux 2.6 nanosecond time stamp weirdness breaks GCC build |
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[ Linux 2.6 losing the nanoseconds from a file timestamp ]
There are two different failure modes, but in most cases only one results in a real problem.
Case 1: make falsely thinks that the .o is younger than the .c. It decides not to rebuild the .o, resulting in a bad build.
Case 2: make falsely thinks that the .c is younger than the .o. It recompiles the .c file, even though it didn't have to. Harmless.
So if we can make the bad situation look like a tie, and always rebuild in the case of a tie, we will obtain valid builds, sometimes with an extra compilation or two.
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