cargo-apk compilation problem

[hanxiaohuivc]

cargo-apk compilation problem
Excuse me, when I compile using the "cargo apk build" command on both windows and linux, the following error occurs: Error: Path "/home/develop/cargo-apk/target/aarch64-linux-android/debug/libndk_build.so" doesn't exist.
What is the cause of this? How to compile it correctly?
Thanks.

[JohnScience]

@hanxiaohuivc In my case, I had to rename the name of the library. cargo apk doesn't seem to respect [lib] section in Cargo.toml.

[MarijnS95]

cargo apk doesn't seem to respect [lib] section in Cargo.toml.

It does since #26, but that hasn't been released yet because this crate is officially deprecated in favour of xbuild.

Perhaps I'll do one more final release with the last few contributions, and a clear marker at the top of the README.

---

The error @hanxiaohuivc is facing sounds like they have not set their [lib] to compile as a cdylib. We now have more robust checking/forcing for that in #28. Though strangely ndk-build is also the name of the support crate for cargo-apk, both of which are host tools and should unlikely be cross-compiled for Android (unless you're running this from Termux, but then you should not be using cargo apk because they are plain libs/exes, not an APK).

[mvvvv]

I have the same problem since I move my main.rs in examples directory.
Error: Path "/home/mv/dvlt/abacaba/abacaba/target/aarch64-linux-android/debug/examples/libskybox1.so" doesn't exist.

[MarijnS95]

@mvvvv have you configured your examples to compile as cdylib as well? See how the examples within this repo do it:

cargo-apk/examples/Cargo.toml

Lines 17 to 19 in 558adff

	[[example]]
	name = "hello_world"
	crate-type = ["cdylib"]

[mvvvv]

Thanks, it works perfectly

[mvvvv]

Too bad. Now I cannot launch my example compiled for linux.
[[example]] name = "hello_world" crate-type = ["bin"]
works only for linux

[[example]] name = "hello_world" crate-type = ["bin","cdylib"]
works only for android.

Any Idea ?

[mvvvv]

Something realy ugly is that with ["bin"] if an old file aarch64 libskybox1.so was previously successfully built, then this old file is packaged in the apk and the build is successfull.

[MarijnS95]

Agreed, it's ugly and unfortunate but not something we can very easily work around. Having two examples is likely your best bet for the time being.

[mvvvv]

I've found the solution. I create a symbolic link of the example, set te example crate-type to "cdylib" and run the link for PC tests. it works well with VS code and launch.json.

[MarijnS95]

Such tricks also exist with path= in Cargo.toml. It's ugly but hard to work around until we get better integration with cargo.