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Kumba wrote: |
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|
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> Brian Koropoff wrote: |
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> |
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>> As far as I know, crossdev only builds a cross compiler which runs on |
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>> your build system but generates executables for another |
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>> processor/architecture. I've already used crossdev sucessfully to |
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>> generate such a compiler for arm. What I want to do now is build a |
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>> compiler that *runs* on arm and creates arm executables (that is, both |
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>> the host and target platform is arm, not just the target). This should |
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>> be as simple as using portage with my crossdev-built cross-compiler and |
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>> emerging it, but the build fails. Is there any trick to getting portage |
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>> to build a native gcc to be included in the arm root fs? |
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> |
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> |
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> If I'm reading this right, then what you want to do is impossible. |
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> You can't build a gcc that runs on arm, and builds for arm, on a |
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> cross-host. gcc has a rather strange build phase, wherein it rebuilds |
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> itself 2-3 times (if you watch a gcc build closely, you'll see an |
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> "xgcc" and references to stage1 and stage2 bootstraps). As such, if |
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> you want to build a native compiler, you have to build on the native |
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> architecture. This is because when the initial bootstrap completes, |
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> and gcc kicks off it's stage1 xgcc run, that xgcc is an arm binary, |
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> and it tries to build a stage2 xgcc arm binary. If performed on a |
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> fast x86 box, this will fail. |
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> |
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> |
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> --Kumba |
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> |
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Are you sure it's impossible? In order to build a compiler on the |
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native architecture, I'll need a compiler that runs on arm to perform |
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the compilation. However, getting a compiler that runs on arm is what |
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I'm trying to do in the first place! The stage tarballs must contain a |
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complete native compiler toolchain so that a gentoo system can be |
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bootstrapped and built. I assume the gentoo devs are building stage |
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tarballs for arm entirely with portage on a fast x86 build machine. I'm |
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wondering if there is some trick to it that I'm missing. Please correct |
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me if I'm wrong about this. |
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|
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-- Brian Koropoff |
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-- |
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