detect function return type

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Hi All

I wonder if autoconf is capable to detect a glibc function return type?
if so, how could i do that?

here is my problem, readlink() return type is ssize_t in newer glibc but
int in older glibc version. In fedora core or suse, the return type is
different even with same glibc version number. so i tried with detect
glibc version but failed because of that. 

thanks.

-- 
Ming Zhang


@#$%^ purging memory... (*!%
http://blackmagic02881.wordpress.com/
http://www.linkedin.com/in/blackmagic02881
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