#158 Tell autoreconf where to write aclocal macros

[Ross Burton]

You have m4 macros in the m4 directory, so that autoreconf knows that they are there it is recommended to set ACLOCAL_AMFLAGS = "-I m4" in the top-level Makefile.am.

[Alexander Perepelkin]

Hello Ross,

thanks for noticing that. Would you mind getting a bit further with the contribution?

* Have you tested the change already on some configuration?
* Could you drop a diff for the change?
* Could you give a brief description of the benefit gained with the update please?

[Ross Burton]

I've tested the change, it's essential for autoreconf to work out of the box, and the diff is simply adding that line to the top-level Makefile.am.

[Alexander Perepelkin]

Added ACLOCAL_AMFLAGS in https://sourceforge.net/p/log4cpp/codegit/ci/1e61c8b67b4666e28e9b042aa5b01cda5536d82f/