Cross compilation for armv7

[schnapper79]

I am aware about the question regarding cross compilation for pi 2/3/4 using cross.

I have a Debian host with and an arm sysroot and a cross toolchain. What libraries I need to cross compile a rust slint project using winit-femtovg? And how can I tell rust to use the sysroot when looking for these libraries?

[tronical]

At minimum in your target sysroot you'll need fontconfig, either xcb or wayland, and libxkbcommon. We do something like this in our docker images at https://github.com/slint-ui/slint/blob/master/docker/Dockerfile.armv7-unknown-linux-gnueabihf - those install a bit more though to also cover Skia (fontconfig-dev packages and libstdc++ for target, and clang/python3 for the host).

[schnapper79]

But how do I tell cargo (?) where my sysroot resides? Simon Hausmann ***@***.***> schrieb am Di., 2. Mai 2023, 09:06:

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At minimum in your target sysroot you'll need fontconfig, either xcb or wayland, and libxkbcommon. We do something like this in our docker images at https://github.com/slint-ui/slint/blob/master/docker/Dockerfile.armv7-unknown-linux-gnueabihf - those install a bit more though to also cover Skia (fontconfig-dev packages and libstdc++ for target, and clang/python3 for the host). — Reply to this email directly, view it on GitHub <#2671 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AGVNAK76UZ5D23MNAP5PTOLXECXANANCNFSM6AAAAAAXQ7GE2E> . You are receiving this because you authored the thread.Message ID: ***@***.***>

[tronical]

I believe you won't need to as the pure Rust build won't look for any libraries to link against. Wayland/xcb/fontconfig are opened dynamically at runtime using dlopen.

[schnapper79]

Ah great thats perfect Simon Hausmann ***@***.***> schrieb am Di., 2. Mai 2023, 09:36:

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I believe you won't need to as the pure Rust build won't look for any libraries to link against. Wayland/xcb/fontconfig are opened dynamically at runtime using dlopen. — Reply to this email directly, view it on GitHub <#2671 (reply in thread)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AGVNAK7G4J43GBUNRIX6TBLXEC2Q5ANCNFSM6AAAAAAXQ7GE2E> . You are receiving this because you authored the thread.Message ID: ***@***.***>