On 08/01/11 22:37, gdweber@iue.edu wrote:
Now that bauerbill is building again, I'm starting to get errors about missing "dyn" libraries for a number of packages:
[haskell-sdl-gfx]:
Graphics/UI/SDL/Rotozoomer.hs:19:7: Could not find module `Graphics.UI.SDL.Types': Perhaps you haven't installed the "dyn" libraries for package `SDL-0.6.2'? Use -v to see a list of the files searched for. Aborting... ERROR: makepkg exited with an error (512)
(Having previously failed to build this because of a missing external library, SDL_gfx, my first thought was: What -- another missing library, SDL_dyn? What's that?) :-)
[haskell-zip-archive]:
Codec/Archive/Zip.hs:69:17: Could not find module `Data.Digest.CRC32': Perhaps you haven't installed the "dyn" libraries for package `digest-0.0.0.8'? Use -v to see a list of the files searched for. Aborting...
Searching around, I've found a couple of other instances of this:
- Comments on haskell-missingh: http://aur.archlinux.org/packages.php?ID=17845 - Comments on haskell-digest: http://aur.archlinux.org/packages.php?ID=23078
Although these comments are automatically posted on the arch-haskell mailing list, it's easy to overlook them because their subjects refer to specific packages -- since I'm not interested in missingh or digest, I deleted them without reading, and probably many others did too.
So, to consolidate the information here, I'll repost peti's advice on the haskell-digest package:
Comment by: peti on Sun, 26 Dec 2010 15:19:40 +0000
Hi Frabjous, apparently, you are using the "haskell-bytestring" package from AUR. That package is kind of obsolete, because it became a part of GHC in version 6.12.3 or so. You probably installed it a while ago, before 6.12.3 was available? Anyway, this is no big deal, and the problem with the missing shared libraries that caused your build failure has been fixed. Still, I would recommend that you clean up your Haskell installation to make sure that everything conforms to the current state of the art. The best way to accomlish that is to run the commands "pacman -R --cascade ghc", then "rm -rf /usr/lib/ghc-*", and then to re-install everything that you actually need from scratch. It's optional to do that, of course. In any case, thanks for the bug report. I'm glad the problem is now fixed.
I do wonder, though, about a few things. 1. Why the dyn libraries are now needed. Is it because of a new version of GHC which does this by default? Or a change in the way Arch Haskell defines packages?
The PKGBUILDs generated by cabal2arch where changed to create dyn libraries. This had the unfortunate effect of requiring a lot of re-compilation. AFAIK the same has been done for the packages in [extra]/[community].
2. Does it still build static libraries as well?
Indeed it does, and executables are actually only linked against the static so the use of makedepends for those packages is still correct. It is of course easy to check this for yourself: % pacman -Ql haskell-archlinux|grep '\.a$' haskell-archlinux /usr/lib/archlinux-0.3.5/ghc-6.12.3/libHSarchlinux-0.3.5.a
3. If I build an executable program, without any special flags, is it going to use the dynamic or static libraries?
It links against the static libs, as mentioned above. Again, you can check this easily yourself: % ldd /usr/bin/cabal2arch linux-vdso.so.1 => (0x00007fff86d77000) librt.so.1 => /lib/librt.so.1 (0x00007f8f24fa0000) libutil.so.1 => /lib/libutil.so.1 (0x00007f8f24d9d000) libdl.so.2 => /lib/libdl.so.2 (0x00007f8f24b99000) libgmp.so.10 => /usr/lib/libgmp.so.10 (0x00007f8f2492c000) libm.so.6 => /lib/libm.so.6 (0x00007f8f246aa000) libc.so.6 => /lib/libc.so.6 (0x00007f8f2434e000) libpthread.so.0 => /lib/libpthread.so.0 (0x00007f8f24131000) /lib/ld-linux-x86-64.so.2 (0x00007f8f251a8000)
4. Is it possible for users to control whether dynamic or static libraries are built, or both, using tools such as bauerbill?
I don't think so, but Peter knows more about the details on the dyn libs and when they are used. He reported all about it to this list, check the archive please. /M -- Magnus Therning OpenPGP: 0xAB4DFBA4 email: magnus@therning.org jabber: magnus@therning.org twitter: magthe http://therning.org/magnus