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f86d3de87f
Autoconf 2.59d (released in 2006) [1] started promoting several macros as not relevant for newer systems anymore, including the `AC_HEADER_TIME`. This macro checks if both `<sys/time.h>` and `<time.h>` can be included at the same time and defines the `TIME_WITH_SYS_TIME` and `HAVE_SYS_TIME_H` symbols. On current system such check is not relevant anymore because in case both headers are present both can be also included at the same time. This patch simplifies this checking. Refs: [1] http://git.savannah.gnu.org/cgit/autoconf.git/tree/NEWS [2] https://www.gnu.org/software/autoconf/manual/autoconf-2.69/autoconf.html
organization of this directory is moving towards this approach: <module>.h -- public API and data types <module>_private.h -- protected API and data types <module>.c -- implementation and private API / types The rules are: .c files may include *_private.h. .h files may not include *_private.h This allows us to have a nicely encapsulated C api with opaque data types and private functions that are nonetheless shared between source files without redundant extern declarations..