I had noticed that this make error would occur if the file being expanded
doesn't have a prefix 'for'. The following snippet is from line 453- of
dealii/cmake/scripts/expand_instantiations.cc
if (!has_prefix(whole_file, "for"))
{
std::cerr << "Invalid instantiation list: missing 'for'" << std::endl;
std::exit(1);
}
Now, I also noticed that dealii/source/base/mpi.inst.in has all the
template function instantiations enclosed within #ifndef DOXYGEN ...
#endif. And in fact, this is the only instantiation file which does so. I
thought this could be the issue and commented these two statements (#ifndef
and #endif). Then the installation went past this point (not complete yet
though).
I have two questions based on what I saw so far.
1. Why are the mpi function instantiations to be declared only when
doxygen is not configured.
2. If I understand correctly, the function expand_instantiations.cc also
has the following code snippet to ignore any preprocessor macros (line
445). Why is this not working when the line #ifndef DOXYGEN is added to
mpi.inst.in?
// output preprocessor defines as is:
if (has_prefix(whole_file, "#"))
{
std::cout << get_substring_with_delim(whole_file, "\n") << '\n';
skip_space(whole_file);
continue;
}
Thanks,
Vachan
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