wrong CFLAGS in Makefile preventing build on x86_64

[GoogleCodeExporter]

What steps will reproduce the problem?
1. Download sreadahead-1.0
2. Unpack
3. make

What is the expected output? What do you see instead?
I expect sreadahead to be built.
Instead I get an error:
sreadahead.c:1: error: CPU you selected does not support x86-64 instruction set

What version of the product are you using? On what operating system?
1.0, Linux, Debian/sid

Please provide any additional information below.
To fix I changed "-march=i686" in the Makefile with
"-march=native".

Original issue reported on code.google.com by [email protected] on 30 Jan 2009 at 10:56