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You will need: 1. A Linux machine with GHC on. 2. A Haiku machine without GHC on, running GCC 4. 3. The GHC 7.8.3 source code. 4. The Haiku source code. Here is how I did it. This will give you a working Haiku version of GHC including GHCi etc., cross-compiled from your Linux machine. Part 1: building a C cross-compiler for Haiku --------------------------------------------- We'll need to put the cross-compiler in /system/develop on the Linux machine, because that's where gcc lives on Haiku and they need to be in the same place (isn't it lovely!) So: $ sudo mkdir /system $ sudo chown your_user_name /system Now build Haiku (probably some of this is unnecessary): $ cd wherever_haiku_is $ ./configure --build-cross-tools x86 wherever_buildtools_are $ jam -j4 haiku-image Now we'll take bits of the stuff that got built and turn them into a grotesque mutant cross-compiler: $ mkdir -p /system/develop $ cp -r generated/cross-tools-x86 /system/develop/tools $ cp -r headers/{os,os/support,posix,libs/iconv,libs/ncurses}/* headers/config /system/develop/tools/i586-pc-haiku/include $ cp $(find generated/objects/haiku/x86/release/system/glue -name '*.o') /system/develop/tools/i586-pc-haiku/lib $ cp $(find generated/objects/haiku/x86/release -name libroot.so -or -name libiconv.a -or -name libncurses.a) /system/develop/tools/i586-pc-haiku/lib Part 2: building GHC -------------------- Extract GHC 7.8.3 and apply the two patches in the ghc-patches directory: ghc-patches/0001-Haiku-patches.patch ghc-patches/0002-Cross-compiling-patches.patch Try building it as follows: $ perl boot $ ./configure \ --prefix=/system/non-packaged/ghc-cross \ --target=i586-pc-haiku \ --with-gcc=/system/develop/tools/bin/i586-pc-haiku-gcc \ --with-ld=/system/develop/tools/bin/i586-pc-haiku-ld \ --with-ar=ar --with-nm=nm --with-ranlib=ranlib --with-objdump=objdump $ make This will work for a while but eventually the build script will try to run a Haiku-compiled version of one program, dll-split, which will segfault. Go into utils/dll-split/ghc.mk, and change the 1 in the last line (which is the phase when dll-split should be built) to a 0. Then run: $ rm -r utils/dll-split/dist-install $ make $ make install Now it will succeed! But 'make install' installs a Linux version of unlit by mistake. Replace it with a Haiku version by running: $ /system/develop/tools/bin/i586-pc-haiku-gcc utils/unlit/unlit.c \ -o /system/non-packaged/ghc-cross/lib/i586-pc-haiku-ghc-7.8.3/unlit If you also end up with a Linux version of ghc-pkg (I did once but seemingly not any more), replace it by running: $ inplace/bin/ghc-stage1 --make -iutils/ghc-pkg -iutils/ghc-pkg/dist/build Main \ -o /system/non-packaged/ghc-cross/lib/i586-pc-haiku-ghc-7.8.3/bin/ghc-pkg Now, just copy /system/non-packaged/ghc-cross over to Haiku! You will need the ncurses_devel and libiconv_devel packages installed. Lastly, go into the bin directory and make some nice symlinks, like linking i586-pc-haiku-ghc to ghc. The build script doesn't make enough and e.g. GHCi will only work once the right symlinks are there. Just make the obvious ones and everything should work! Part 3: building GHC on Haiku ----------------------------- Now let's build a self-hosted compiler on Haiku, the sane way. Extract the GHC tarball on Haiku and apply the patch ghc-patches/0001-Haiku-patches.patch but NOT the second, cross-compiling, patch. Then just build - everything should work! Don't forget to use --prefix as /usr/local is not very Haiku-friendly. To get cabal-install running, you will need to build several packages by hand. At time of writing you need the following packages: Cabal-1.20.0.2 cabal-install-1.20.0.3 HTTP-4000.2.18 mtl-2.2.1 network-2.5.0.0 parsec-3.1.7 random-1.0.1.3 stm-2.4.3 text-1.2.0.0 transformers-0.4.1.0 zlib-0.5.4.1 Fetch these on a machine with a working cabal-install by using cabal unpack, then transfer them over to Haiku. Note, some of these packages are not the latest version, so include the version number when running cabal unpack! The network package fails to build on Haiku. Apply the patch network.patch from this repository. Then build and install each package with runghc Setup.lhs configure --prefix=$PREFIX runghc Setup.lhs build runghc Setup.lhs install where $PREFIX is wherever you chose to install GHC - make sure to specify it, otherwise Cabal will default to /usr/local. Hopefully it will work!
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