Ah I see! Had not thought of that solution. (This is the first time I have tried to use autoconf and configure)
Many thanks. Erika On 17 Aug 2012, at 13:04, Dirk Eddelbuettel wrote: > > On 17 August 2012 at 11:44, Cule, Erika wrote: > | If so, I still don't understand what happens when I compile the package if > GSL is not installed on the computer, as there will still be C code in the > src directory. > > That is precisely the use case for autoconf et al. > > You test if something (here GSL) is available (and there are macros and > examples for in many places) and then define a header file variable such as > I_HAVE_FOUND_GSL as 1 or 0, say. In your C code, you then use something like > > #if I_HAVE_FOUND_GSL == 1 > > some code > > #endif > > Now your code compiles in both cases. > > Alternatively, you just depend on the GSL. Many packages on CRAN do, and the > Windows build infrastructure provides it. > > Dirk > > -- > Dirk Eddelbuettel | e...@debian.org | http://dirk.eddelbuettel.com ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
