I'm looking over some random code for an open source messaging framework. In this code, there are alot of .h.in files. What do these .h.in files mean and how are they different from regular .h files? The content of the files looks similar.
Edit: There are also a few Makefile.in
They're used with GNU Autotools - basically they contain a "macro-ized" version of configurable files (like Makefiles). When you invoke ./configure, autotools uses these files to produce correct headers and makefiles for your system.
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