autoconf, how to include file from AC_CONFIG_SRCDIR file

Question

I would like to be able to merge two files into one during configure run. I already do textural replacement using AC_CONFIG_SRCDIR[file.hpp] macro on some files. is there some directive to include files from file.hpp.in, some sort of @include (another.hpp) @ or something like that?

Thanks

Answer 1

AC_CONFIG_FILES([file.hpp:file.hpp.in:another.hpp.in]) will perform text substitution on both file.hpp.in and another.hpp.in and then concatenate both results into file.hpp.

Answer 2

Found answer myself. file insertion can be done using ac_subst_file.