"autoreconf -I" vs. Makefile.am:ACLOCAL_AMFLAGS = -I

[Дилян Палаузов]

Hello,

is there any point to run "autoreconf -I directory1", when 
"ACLOCAL_AMFLAGS = -I directoty1" is in the corresponding Makefile.am ?

In the documentation of Automake 1.12, node "Local Macros", is written, 
that ACLOCAL_AMFLAGS is used by autoreconf to run aclocal.

In the documentation of Autoconf 2.69, node "autoreconf invocation" is 
written, that autoreconf passes its -I parameter to aclocal, autoconf 
and autoheader.

The documentation of autoheader states indirectly, that it accepts "-I" 
parameter to search the directory for AC_DEFINE macros.  Is it enough to 
pass -I to aclocal and skip it with autoheader later?

The further, the documentation for the command autoconf states, that the 
command accepts "-I directory" parameter.  What does autoconf do with 
its -I parameter, if aclocal has put all stuff already in ./aclocal.m4?

What is the point to define in "ACLOCAL_AMFLAGS = -I something" in 
Makefile.am, if autoreconf has to be run anyway with "-I something" in 
order to pass it to autoheader and autoconf?

Thanks in advance for your comments
  Дилян

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