Re: getcwd infinite recursion

[Bruno Haible]

Ralf Wildenhues wrote:
> > To me, it looks like AM_CPPFLAGS is empty by default. Automake's default
> > includes are in a separate variable called DEFAULT_INCLUDES.
> 
> Only if you've used nostdinc (`info Automake "Program variables"'):
> 
> | `AM_CPPFLAGS' <doc of AM_CPPFLAGS>

Then the doc of AM_CPPFLAGS is misunderstandable. What I've observed with
automake 1.10, is that after running "gnulib-tool --create-testdir ..."
  - The generated Makefile.am has a line defining AM_CPPFLAGS to empty.
  - The Makefile then has an empty AM_CPPFLAGS as well, and a variable
    DEFAULT_INCLUDES that contains -I. and others.
  - When I remove the line that defines AM_CPPFLAGS from Makefile.am, it
    disappears also from the Makefile. This has no effect on the build.

> |      The contents of this variable are passed to every compilation that
> |      invokes the C preprocessor; it is a list of arguments to the
> |      preprocessor.  For instance, `-I' and `-D' options should be
> |      listed here.
> | 
> |      Automake already provides some `-I' options automatically.

It will be less prone to misunderstandings if you change that last sentence to

        "Automake already provides some `-I' options automatically, in a
         separate variable that is also passed to every compilation that
         invokes the C preprocessor."

Bruno