Is there anything in this that would enable me to install a "stdint.h" file in $prefix (called something like "idn-int.h"), so I can use uint32_t etc in my API, and be backwards compatible with hosts that doesn't have uint32_t natively?
Compare the AX_CREATE_STDINT_H macro: http://autoconf-archive.cryp.to/ax_create_stdint_h.html The essential difference is that the installed "idn-int.h" should work without assuming any config.h symbols, but instead rely on a combination of install-time "guesses" and CPP symbol checks to define the proper uint32_t types for the host and the compilers on that host. Thanks.