AM_CFLAGS in the project root?

[Baurjan Ismagulov]

Hello,

I have a project with two subdirectories. I want to override standard
CFLAGS. I can do this by defining AM_CFLAGS in each subdirectory. This
works. However, I want to have it in one place. So I've tried to define
this variable in the root directory instead of subdirectories, but in
this case the generated Makefiles don't seem to use it. How can I make
my Makefiles use it?

I'm using automake 1.7.9.

Thanks in advance,
Baurjan.