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Re: Detect word size in the Hurd from the preprocessor
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From: |
Richard Braun |
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Subject: |
Re: Detect word size in the Hurd from the preprocessor |
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Date: |
Sat, 1 Jun 2019 17:21:55 +0200 |
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User-agent: |
Mutt/1.5.23 (2014-03-12) |
On Sat, Jun 01, 2019 at 01:26:54PM +0200, Joan Lledó wrote:
> Is there a reliable way for the C preprocessor to know whether the
> system is 32 or 64 bit, in the Hurd? I know the Hurd is only 32 bit
> for now, but I wonder if is there a macro somewhere which contains
> this information.
With GCC and Clang, __LP64__ is the most reliable one. Note that this
is specific to the ILP32 and LP64 data models though. On Windows,
which uses the LLP64 data model, it wouldn't work.
--
Richard Braun