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Re: Defining Macros With Literal Values

From: Andreas Schwab
Subject: Re: Defining Macros With Literal Values
Date: Wed, 26 Oct 2005 22:27:30 +0200
User-agent: Gnus/5.110003 (No Gnus v0.3) Emacs/22.0.50 (gnu/linux)

Eric Lemings <address@hidden> writes:

> Greetings,
> I have a tricky little problem I was hoping someone could
> help me with.  I am trying to write an Autotools macro that
> extracts the value of a macro from a system header file
> and defines another preprocessor macro with the same value.

You can use AC_DEFINE_UNQUOTED to define a macro to the result of a shell
substitution.  You can easily extract the value from the output of the
preprocessor.  Don't use the output of a compiled program because that
would make cross-compiling impossible.


Andreas Schwab, SuSE Labs, address@hidden
SuSE Linux Products GmbH, Maxfeldstraße 5, 90409 Nürnberg, Germany
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