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From robert burrell donkin <>
Subject Re: [GUMP@brutus]: jakarta-commons/commons-logging failed
Date Wed, 19 May 2004 19:24:57 GMT
On 19 May 2004, at 10:18, Ceki Gülcü wrote:

> This time in English:
> Experiments I conducted also show that while it is fairly easy to
> modify commons-logging to make it compile-time compatible with both
> log4j 1.2 and 1.3alpha, there will be problems at runtime.
> In fact, commons-logging source compiled with log4j-1.2.x.jar will only
> run with log4j-1.2.x.jar but not log4j-1.3alpha.jar. Similarly, the
> *same* commons-logging source code will compile fine with
> log4j-1.3alpha.jar but it will only run with log4j-1.3alpha.jar, not
> log4j-1.2.x.jar.
> In summary, the changes proposed by Mario Ivankovits and myself
> achieve compile-time compatibility but not run-time compatibility.

good that's what i'd expected :)

sorry if we had our wires crossed before: i'm more used to talking 
about binary compatibility and compile compatibility where you talk 
about run-time compatibility and compile-time compatibility 

- robert

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