libtool: fix include paths when cross compiling

[oreo639]

Testing the changes

• I tested the changes in this PR: briefly

@dkwo Can you test this? (whenever you are available ofc)

[dkwo]

Thanks for looking into this. I've crossbuilt the package, I can install it on my aarch64 machine, but how do I make sure it is used in the build chroot when building ntl? I tried to build ntl in /tmp, but it fails before reaching that point.

[oreo639]

You can build libtool as cross, then build it as native, then replace the native package with the cross package in your hostdir/binpkgs and then try building ntl.

Also if you can share the native-build package here for comparison, that would be appreciated.

(You can also use xbps-rindex)

[dkwo]

Sure, will do it tomorrow.

[paper42]

native builds for aarch64-musl: https://vasilek.cz/repo/libtool/

[oreo639]

Thank you.

[dkwo]

You can build libtool as cross, then build it as native, then replace the native package with the cross package in your hostdir/binpkgs and then try building ntl.

if I do that, it gives
ERROR: libtool-2.4.7_2: SHA256 hash is not valid: Numerical result out of range
Do you know how to fix this?

[oreo639]

You need to do xbps-rindex -fa libtool-2.4.7_1.<arch>.xbps libltdl-2.4.7_1.<arch>.xbps libltdl-devel-2.4.7_1.<arch>.xbps
(Also make sure you copied libltdl and libltdl-devel)

[dkwo]

Thanks, now it errors out in a different way: https://paste.c-net.org/WedgedMopping

[oreo639]

Is this from the latest version of the branch, just checking?

[dkwo]

yes, it is.

[dkwo]

Shall we try the approach suggested by @paper42 in #40980 at least for now?

[paper42]

Shall we try the approach suggested by @paper42 in #40980 at least for now?

no, that's a hack that needs modifying xbps-src

[oreo639]

Alright, I think I see the issue.
libtool: link: cc -fPIC -DPIC -shared -nostdlib /usr/lib/../lib64/crti.o ... is supposed to be libtool: link: g++ -fPIC -DPIC -shared -nostdlib /usr/lib/../lib64/crti.o ...

That seems to be due to it being sed'ed to the form of CC=${CC:=c++} where that is just a regular assignment when compiled natively. (CC="g++")

The latest commit works for me with binfmt/qemu, feel free to verify when you are available @dkwo

[dkwo]

It works :) Thanks for figuring this out!