• Jan Djärv's avatar
    Use gcc-generated dependency files if we can (GNU Make and gcc required). · a53cfbe5
    Jan Djärv authored
    * Makefile.in: If AUTO_DEPEND is defined, make gcc generate
    dependency files in deps/. Include those files into Makefile.
    * config.in: Generated (AUTO_DEPEND).
    * configure.in: --enable-autodepend is new.  Check for GNU Make
    and that gcc supports -MMD -MF. Define AUTO_DEPEND if we can use
    gcc and GNU make to generate dependencies.
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