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2008/9/17 Alon Bar-Lev <alon.barlev@×××××.com>: |
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> On 9/17/08, Andrew John Hughes <gnu_andrew@××××××××××.org> wrote: |
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>> First of all, there is no need to go to such lengths removing gcj afterwards. |
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>> It's not going to hurt to leave it on. |
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> |
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> It takes a lot of resources (disk, time rebuilding, unused components). |
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> So there is a reason to keep system as small as possible. |
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> |
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Err.. time rebuilding is part of the reason _not_ to remove it. |
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Applications like ecj benefit from being natively compiled by gcj in |
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my experience. |
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There is a gcj USE flag in Gentoo for this purpose. |
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You're probably talking about ~150mb vs. a long re-build time. I'd take the |
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150mb and potential future use, especially with today's hard disc sizes. |
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gcc still takes a while to build even on new machines. |
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>> Also, the build depends on jdk >= 1.5 already, so CACAO or JamVM would |
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>> do the job fine. But you'd have similar bootstrap issues, because these |
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>> require GNU Classpath and that requires ecj, etc. |
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> |
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> So gcj is the best alternative. But what happens if gcc stops |
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> providing this in favor of OpenJDK? |
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> |
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Not likely anytime in the near future. |
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>> Building a Java environment can be a nightmare to be honest :) |
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>> I guess the only non-GCJ way would be to use Jikes, then an older Classpath |
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>> to get ecj working, then build the new ones. |
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> |
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> I guess I am asking that icedtea6 does not have such boostrap in package... |
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That's pretty much impossible, unless you plan to write a compiler that can |
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cope with 1.5 bytecode in either C or C++, and then alter the OpenJDK |
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build system to use it :) |
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Basically you need to be able to build the OpenJDK langtools (written in Java |
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with 1.5 constructs), then run them (which needs a 1.5-capable Java VM). Or |
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some equivalent. |
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> If it does not provide this, users should have a simple way to |
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> bootstrap it in Gentoo... Providing a simple script is sufficient. |
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> |
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Then feel free to write one as I said. |
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> Thanks, |
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> Alon. |
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> |
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-- |
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Andrew :-) |
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|
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Support Free Java! |
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Contribute to GNU Classpath and the OpenJDK |
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http://www.gnu.org/software/classpath |
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http://openjdk.java.net |
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|
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PGP Key: 94EFD9D8 (http://subkeys.pgp.net) |
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Fingerprint: F8EF F1EA 401E 2E60 15FA 7927 142C 2591 94EF D9D8 |
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