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Annotation of wikisrc/users/porting_and_updating_ghc.mdwn, revision 1.1

1.1     ! wiki        1: https://downloads.haskell.org/~ghc/6.4.2/docs/html/building/sec-porting-ghc.html#sec-booting-from-hc
        !             2: 
        !             3: > < mspo> Bootstrapping GHC on a system without GHC already installed is achieved by taking the intermediate C files (known as HC  
        !             4: >              files) from another GHC compilation, compiling them using gcc to get a working GHC.  
        !             5: > < dh> that is no longer supported.  
        !             6: > < dh> or rather, that's what's no longer supported  
        !             7: > < mspo> that is "kristerw's gcc 6.4.2 bootstrap kit"  
        !             8: 
        !             9: > < mspo> dh: what about building with a first-party ghc under linux emulation?  
        !            10: > < mspo> https://downloads.haskell.org/~ghc/7.8.3/  
        !            11: > < dh> I dunno  
        !            12: 
        !            13: > < dh> mspo: for ghc, to begin with, install lang/ghc (ghc 6.8) and try packaging 6.12  
        !            14: > < dh> you need an i386 chroot for this, and it's a large slow build, but it's otherwise mostly ok  
        !            15: > < dh> if you set it up so it'll build from an already-installed ghc 6.8, that's a good starting point  
        !            16: > < dh> I have some stuff I can send you regarding how to rig it out for using a binary package as a bootstrap kit  
        !            17: > < dh> meanwhile, I need to commit a gcc64 package (the ghc from the existing "source" bootstrap kit)  
        !            18: > < dh> and a ghc68 package that's equivalent to the current lang/ghc but uses ghc64  
        !            19: > < dh> both of these I have most of the work already done  
        !            20: > < dh> then ideally we hack things so they can all be installed at once, debug ghc612, and then work on the most recent 7.x that  
        !            21:             still builds on 6.12  
        !            22: > < dh> packaging all the versions means binary bootstrap kits become less critical because anyone can make one  
        !            23: > < dh> also, in the above s/gcc/ghc/g, fingers have "gcc" wired in  
        !            24: > < dh> the idea is to have each ghc package support building either from a binary package of an older version, a binary package   
        !            25:             of itself, an installed older version, or an installed itself  
        !            26: > < mspo> dh: got it (I think)  
        !            27: > < mspo> dh: I'm a littls scared about trying to make the jump to 64bit  
        !            28: > < dh> and at some point we want to figure out ... that  
        !            29: > < dh> but let's make i386-netbsd work first  
        !            30: > < dh> using a 32-bit chroot for haskell is annoying but it's not critical