On Tuesday 31 May 2011 14:44:58, Simon Marlow wrote: > > What you need is libbfd.so, which is a symbolic link to the versioned > library (libbfd-2.20.0.20100122-6.so). This is normally installed by > the development version of the library (e.g. libbfd-dev on > Debian-derived distros).
Couldn't find anything like that for openSuSE (11.3), the versioned .so comes with binutils, libbfd.a (and .la) come from binutils-devel. I'll take a look at the AC stuff and if I don't see how it might work, I'll try with a manually created symlink. > > The shared version has the dependency built-in, so the GHC build system > wouldn't have to do anything (that's how it works here). > > > I'm far from an expert, but as far as I can see, there is already such > > a test, in configure.ac: > > > > AC_CHECK_LIB(bfd, bfd_init) > > I think that only tests for the presence of the symbol in the library, > it doesn't test that compiling an executable against that library > actually works. > Well, compiling and running a simple test programme that calls bfd_init() works here without linking in libz, so I guess that test wouldn't detect the dependency even if it actually runs the executable. > > with a test using bfd_init in configure. Unfortunately, that doesn't > > detect if libz is needed without using some functions depending on > > it. If I had the slightest idea how to make it detect the dependency > > on libz, I happily would, but I've not yet found any introduction to > > shell scripting or using autotools accessible to a complete beginner. > > Yes, I'm afraid the learning curve is a bit steep. It's so hard to get > right that I wouldn't even attempt to try to fix it without a machine to > test on! A good place to start would be tests that do similar things - > a quick look at the code suggests AC_COMPILE_IFFELSE and AC_LINK_IFFELSE > might be useful, also FP_CHECK_FUNC looks like it might do what you > want. I'll look. Cheers, Daniel _______________________________________________ Glasgow-haskell-users mailing list Glasgow-haskell-users@haskell.org http://www.haskell.org/mailman/listinfo/glasgow-haskell-users