[Libguestfs] Building virt-v2v - Error: guestfs_config.cmi: is not a compiled interface for this version of OCaml

[Richard W.M. Jones]

On Thu, Jul 09, 2020 at 02:35:11AM +0300, Nir Soffer wrote:
> I did not touch virt-v2v for a while, and I cannot build it now.
> 
> There are not instructions in the README on under docs, so I tried the common
> stuff:
> 
> $ ./autogen.sh
> ...
> Next you should type 'make' to build the package,
> ...
> $ make
> make  all-recursive
> make[1]: Entering directory '/home/nsoffer/src/virt-v2v'
> Making all in common/mlstdutils
> make[2]: Entering directory '/home/nsoffer/src/virt-v2v/common/mlstdutils'
>   OCAMLOPT guestfs_config.cmx
> File "guestfs_config.ml", line 1:
> Error: guestfs_config.cmi
>        is not a compiled interface for this version of OCaml.
> It seems to be for an older version of OCaml.

This is because you've got *.cm* (compiled OCaml modules/interfaces)
around for the old version of OCaml.  If you do "make clean" in the
affected directories, or simply remove these files, it should fix it.

Rich.

> make[2]: *** [Makefile:2321: guestfs_config.cmx] Error 2
> make[2]: Leaving directory '/home/nsoffer/src/virt-v2v/common/mlstdutils'
> make[1]: *** [Makefile:1842: all-recursive] Error 1
> make[1]: Leaving directory '/home/nsoffer/src/virt-v2v'
> make: *** [Makefile:1760: all] Error 2
> 
> I'm using Fedora 31.
> 
> Nir

-- 
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
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