Hello, * Eve-Marie Devaliere wrote on Mon, Jan 31, 2011 at 05:34:47PM CET: > I am trying to replicate the install of an existing package using autoconf. > We need the package to be able to compile with a wide variety of > compilers. In the original setup this was done by the make.macros file > that would give a list of flags for each compiler. > From what I understand autoconf has a few built in macros that help with > the choice of flags such as AC_FC_FREEFORM, but unless I am missing > something that won't cover all the flags. What is then the recommended > way to handle this? I could have a bunch of 'case' in my configure.ac > file but I wanted to see if there wouldn't be a more elegant way... I am > new to fortran too so that may sound crazy but couldn't there be a > library of flag for known fortran compiler that autoconf could select on > the fly like for the free form one? Which kinds of flags do you need support for? The "Autoconf Way" of implementing things, when there isn't a predefined macro for some feature, is to try out a set of known compiler switches and select the first one that has the desired features. For example, the AC_FC_FREEFORM macro tries to compile a small free-form source file, and passes one of a few known compiler flags that enable free form. It picks the first one that works. If you can formulate your needs in such a way, then the next hurdle is to overcome the M4 language and a few Autoconf building block macros like AC_COMPILE_IFELSE and AC_LINK_IFELSE. We can help with the latter if the former is clear. Cheers, Ralf _______________________________________________ Autoconf mailing list Autoconf@xxxxxxx http://lists.gnu.org/mailman/listinfo/autoconf
