From: Paul Duncan <pabs@...>
Date: 2002-04-19T01:45:24+09:00
Subject: Re: Help wanted for statvfs extension


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* Daniel Berger (djberg96@hotmail.com) wrote:
> Mike Hall <mghall@enteract.com> wrote in message
> <snip>
> >=20
> > I just uploaded my version for the Linux 'statfs' and 'getmntent' calls.
> > Might be OK for BSD, also?
> > It's modeled after the standard 'etc' extension.
> >=20
> >   http://www.enteract.com/~mghall/ruby/filesystem-0.1.tgz
>=20
> I just downloaded and tried this.  I made one adjustment first:
>=20
> - #include <mntent.h>
> + #include <sys/mntent.h>
>=20
> Is the mntent.h file in different locations depending on the OS?  That
> will need to be solved if that's the case.

Yes, unfortunately.=20

$ uname -a
SunOS happy 5.7 Generic_106541-18 sun4u sparc SUNW,Ultra-Enterprise
$ ls /usr/include/sys/mntent.h   =20
/usr/include/sys/mntent.h

vs.

pabs@white:~> uname -a
Linux white 2.2.18-raid-mosix #2 SMP Tue Jan 2 12:40:13 EST 2001 i686
unknown
pabs@white:~> ls /usr/include/{,sys/}mntent.h=20
ls: /usr/include/sys/mntent.h: No such file or directory
/usr/include/mntent.h

[snipped the rest]


Maybe something like this in the extconf.rb is the solution:

prefixes =3D ['', 'sys/']
file =3D 'mntent.h'

prefixes.each { |p|
  path =3D p + file
  $CFLAGS << '-I' << p if have_header path and p.length > 0
}

> Dan

--=20
Paul Duncan <pabs@pablotrin.org>        pabs in #gah (OPN IRC)
http://www.pablotron.org/               OpenPGP Key ID: 0x82C29562

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