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Re: Defining Macros With Literal Values
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From: |
Andreas Schwab |
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Subject: |
Re: Defining Macros With Literal Values |
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Date: |
Wed, 26 Oct 2005 22:27:30 +0200 |
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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.
--
Andreas Schwab, SuSE Labs, address@hidden
SuSE Linux Products GmbH, Maxfeldstraße 5, 90409 Nürnberg, Germany
Key fingerprint = 58CA 54C7 6D53 942B 1756 01D3 44D5 214B 8276 4ED5
"And now for something completely different."