RE: finding the value of a preprocessor symbol

[Thomas Dickey]

On Thu, 21 Jan 2010, David Byron wrote:

> On Thursday, January 21, 2010, John Calcote wrote:
> > On 1/21/2010 4:38 PM, David Byron wrote:
> > $ cpp -dM foo.h | grep FOO
> > #define FOO an_interesting_value
>
> Good idea.  Replace cpp -dM with $CPP $CPPFLAGS and I'm getting close.  Also
> starting to convince myself I'm barking up the wrong tree...

There is also $ac_cpp, but autoconf maintainers have declined to treat 
_any_ of the variables as documented.

--
Thomas E. Dickey
http://invisible-island.net
ftp://invisible-island.net