blag/post/zsnes-on-amd64-ubuntu.mdwn

   1 [[!meta title="ZSNES on AMD64 Ubuntu"]]
   2 [[!meta date="2010-10-06"]]
   3 [[!meta author="rohieb"]]
   4 [[!meta license="CC-BY-SA 3.0"]]
   5 [[!flattrthing id=80701]]
   6
   7 **[ Update, 2013-10:** This post post is not up to date anymore. On newer
   8 Debians (since 7.0/wheezy) and Ubuntus (at least since 12.04, Precise Pangolin),
   9 you should be able to install zsnes out of the box: `sudo apt-get install
  10 zsnes:i386`. For details see the MultiArch documentation for
  11 [Debian][MultiArchDebian] and [Ubuntu][MultiArchUbuntu]. **]**
  12
  13 [MultiArchDebian]: https://wiki.debian.org/Multiarch/
  14 [MultiArchUbuntu]: https://help.ubuntu.com/community/MultiArch
  15
  16 Before I bought my current hardware, I was working on a 32-bit-based
  17 system, and I really appreciated ZSNES as an SNES emulator. But
  18 unfortunately, my new hardware was an AMD64 system, and there is
  19 currently no ZSNES package for 64-bit Ubuntu or Debian :( So I decided
  20 to google a bit about the issue, but it took me until now (a year later)
  21 to get ZSNES finally working on my machine. The problem is, if you build
  22 ZSNES on a 64-bit machine, all the application does is segfault at
  23 start, and if you [try to compile for 32-bit systems][0], you get errors
  24 about missing 32-bit libs (in particular, configure does not find a
  25 suitable `libsdl`). Instead, if you just take the binary which was
  26 compiled on a 32-bit system, and install the `ia32-libs` package,
  27 everything seems to work—at least I was able to play a few levels of
  28 Super Mario World succesfully :-)
  29
  30 [0]: http://board.zsnes.com/phpBB3/viewtopic.php?p=118067&sid=dd9a2a54d9178eb5009c33586aea703c#p118067
  31
  32 So here was my idea: take the 32-bit package from the Ubuntu repository,
  33 and just change the Architecture control field, and by this fool dpkg :P
  34 And as it turned out, this idea worked great. You can get the Debian
  35 package here if you want, it *should* work for Ubuntu Karmic and Lucid,
  36 as well as for Debian testing (**but** I only tested it on Lucid, so
  37 there is no warranty here—but I’m happy to hear if it works :-)):
  38
  39 * [zsnes_1.510-2.2ubuntu3~ppa1_amd64.deb][2]
  40 * SHA1: `716bbd37267b477ef02961a7727212619309b83f`
  41 * MD5: `452ea5230ad17df1dee649ab4cc6c8c0`
  42
  43 [2]: http://rohieb.name/stuff/zsnes_1.510-2.2ubuntu3~ppa1_amd64.deb
  44
  45 ## How to Reproduce It
  46 For the curious people reading here, here is what I actually did:
  47
  48 1.  `wget http://archive.ubuntu.com/ubuntu/pool/universe/z/zsnes/zsnes_1.510-2.2ubuntu3_i386.deb`
  49 2.  `ar x zsnes_1.510-2.2ubuntu3_i386.deb`
  50 3.  `tar xzf data.tar.gz`
  51 4.  Edit `usr/share/applications/zsnes.desktop` and added `-ad sdl` to the
  52     `Exec:` field, otherwise it would just segfault on the first run:
  53
  54         Exec=zsnes -ad sdl
  55
  56 5.  Edit `usr/share/doc/zsnes/changelog.Debian.gz` and added a new
  57     changelog entry for the version (just copy one of the previous
  58     entries and adapt it)
  59 6.  `tar xzf control.tar.gz`
  60 7.  Edit the `control` file, changed the `Version:` and `Architecture:`
  61     field to `amd64`, added the `ia32-libs` dependency, and set myself as
  62     maintainer:
  63
  64         Package: zsnes
  65         Version: 1.510-2.2ubuntu3~ppa1
  66         Architecture: amd64
  67         Maintainer: Roland Hieber <foobar@example.org>
  68         Installed-Size: 4160
  69         Depends: ia32-libs, libao2 (>= 0.8.8), libc6 (>= 2.4), libgcc1 (>= 1:4.1.1),
  70           libgl1-mesa-glx | libgl1, libpng12-0 (>= 1.2.13-4),
  71           libsdl1.2debian (>= 1.2.10-1), libstdc++6 (>= 4.1.1), zlib1g (>= 1:1.2.2.3)
  72         [...]
  73
  74 8.  Change the `md5sums` file for the right values for
  75     `usr/share/applications/zsnes.desktop` and
  76     `usr/share/doc/zsnes/changelog.Debian.gz` (I used the `md5sum`
  77     command and copy-pasted it)
  78 9.  `tar czf control.tar.gz control md5sums postrm postinst`
  79 0.  `tar czf data.tar.gz usr/`
  80 1.  `ar r zsnes_1.510-2.2ubuntu3~ppa1_amd64.deb debian-binary
  81     control.tar.gz data.tar.gz`
  82
  83 I’m afraid that I can’t put the package into [my PPA][3], Launchpad only
  84 accepts source packages for uploads, and builds the binary packages
  85 itself, both for i386 and AMD64. This approach can not be used here,
  86 since we needed the i386 binary for AMD64.
  87
  88 [3]: https://launchpad.net/~rohieb/+archive/ppa
  89
  90 [[!tag Debian hacking howto Ubuntu workaround Linux packaging
  91     Ubuntu_Jaunty Ubuntu_Karmic ZSNES]]