Re: Issues w/ "relink" and cross-compilation

[Philip Prindeville]

 If a new version of libtool does come out that's more cross-compilation 
friendly, I'd be willing to scrub as many of the buildroot packages that we use 
as possible and drive upstream patching.


On 7/12/10 4:11 AM, Richard Purdie wrote:
> Hi,
>
> I've spoken about this in the past but it looks like I should mention it
> again. I do extensive cross compiling of the entire Linux software stack
> using OpenEmbedded and Poky (I maintain the latter). We have cross
> compiling working with libtool with a variety of workarounds. This
> mainly consists of the following simple patch to libtool itself:
>
> http://git.pokylinux.org/cgit.cgi/poky/tree/meta/packages/libtool/libtool/cross_compile.patch
>
> and then manipulation of the .la files with sed if we ever want to move
> the sysroot directory, or use the .la files on the target device.
>
> There are a couple of other patches we use. One is to allow multiple
> libtool scripts to live in the same place by adding a cross prefix to
> the tool name:
>
> http://git.pokylinux.org/cgit.cgi/poky/tree/meta/packages/libtool/libtool/prefix.patch
>
> This patch also allows us to tell when the "wrong" (unpatched) libtool
> is being used.
>
> The final patch we're currently applying is probably a bug in libtool:
>
> http://git.pokylinux.org/cgit.cgi/poky/tree/meta/packages/libtool/libtool/trailingslash.patch
>
> where a directory comparison was failing as one variable ended in a
> slash and the other did not. We're fixing this by stripping any slash
> off both options (the patch is pending an update to do this). I haven't
> isolated a proper test case to be able to submit this one as a proper
> bug yet though.
>
> Longer term I'm still hoping we'll see sysroot support in libtool and I
> may even find some time to start the ball rolling on patches eventually
> but I'm not going to get to that soon, much as I wish it were otherwise.
>
> Cheers,
>
> Richard