Re: [Sablevm-developer] building out-of-the-box on non-Linux platform

[David <db...@cs...>]

On Mon, Jan 19, 2004 at 08:31:31AM +0100, Patrick Cernko wrote:
> Also sprach Grzegorz B. Prokopski zu "17.01.2004 11:08" Anno Domini:
> > W li?cie z sob, 17-01-2004, godz. 04:17, David B=E9langer pisze:=20
> >=20
> >>Hi,
> >>
> >>I think it would be great if SableVM could be built out-of-the-box on
> >>all platforms including the non-Linuxian FreeBSD and OS X.  It will
> >>simplify my life as I want to build and test on these platforms.
> >>Currently source code is not an issue, it is more a configure/Makefil=
e
> >>isssue.
> >>
> >>src/libsablevm/Makefile.am has some line like:
> >>libsablevm_la_LIBADD =3D -lpthread -lm -lffi -lltdl -lrt
> >>
> >>FreeBSD does not like -lpthread.
> >>OS X does not like -lrt.
> >>

...

> >=20
> > Ideally, I think we'd have in configure.ac sth. like:

...

> >=20
> > +AC_MSG_CHECKING([if we need -lrt])
> > +
> > +case "$host" in
> > +  *solaris*)
> > +    lrt=3D-lrt
> > +    AC_MSG_RESULT([yes])
> > +    ;;
> > +  *)
> > +    AC_MSG_RESULT([no])
> > +    ;;
> > +esac
> >=20
> > +AC_MSG_CHECKING([if we need -lpthread])
> > +
> > +case "$host" in
> > +  *freebsd*)
> > +    AC_MSG_RESULT([no])
> > +    ;;
> > +  *)
> > +    lpthread=3D-lpthread
> > +    AC_MSG_RESULT([yes])
> > +    ;;
> > +esac
> >=20
>=20
> That's exactly what you should do in configure! For that reason, there
> are more macros provided by autoconf that only "AC_MSG_*". Your last
> case for example could be simpliefied to a simple one-liner using
> AC_CHECK_LIB! Have a look at the autoconf info pages for a complete
> overview. A call of autoscan in your sources could also be helpful (hav=
e
> a look at the generated configure.scan template). On Debian, there
> exists a package named autobook with a quiet complete html documentatio=
n
> about auto*. Last but not least, three pointers:
>=20

Hi,

So if I understand well, we will use the AC_CHECK_LIB in two ways:

1) For system libraries such as: m, pthread, rt, ...
   To check their if we need to link them explicitly.
2) For non-system lib such as: ltdl, popt, ffi
   To check if the user have installed them like we are currently
   doing.

Sounds good?

David


---

David B=E9langer
Graduate Student
School of Computer Science
McGill University
Office: MC226

Web page:   http://www.cs.mcgill.ca/~dbelan2/
Public key: http://www.cs.mcgill.ca/~dbelan2/public_key.txt