How to check Linux version with Autoconf?

Posted by Goofy on Stack Overflow See other posts from Stack Overflow or by Goofy
Published on 2010-06-06T13:51:47Z Indexed on 2010/06/06 14:12 UTC
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linux

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autoconf

My program requires at least Linux 2.6.26 (I use timerfd and some other Linux-specific features).

I have an general idea how to write this macro but I don't have enough knowledge about writing test macros for Autoconf. Algorithm:

Run "uname --release" and store output
Parse output and subtract Linux version number (MAJOR.MINOR.MICRO)
Compare version

I don't know how to run command, store output and parse it.

Maybe such macro already exists and it's available (I haven't found any)?

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