"renderer-skia" static linking failed

[coder-hxl]

Bug Description

I searched and found that there is rust-skia/rust-skia#1119 where a similar problem was encountered. Mine seems not to have had a permission issue, but the build also failed.

Could this be caused by the renderer-skia component of slint?

.cargo\config.toml

[target.'cfg(windows)']
rustflags = ["-C", "target-feature=+crt-static"]

cargo build --release error log:

error: failed to run custom build command for `skia-bindings v0.87.0`

Caused by:
  process didn't exit successfully: `E:\Project\recovery\src-installer\slint-rust\target\release\build\skia-bindings-56d18114351cc6b1\build-script-build` (exit code: 101)
  --- stdout
  cargo:rerun-if-env-changed=DOCS_RS
  cargo:rerun-if-env-changed=SKIA_DEBUG
  cargo:rerun-if-env-changed=SKIA_SOURCE_DIR
  cargo:rerun-if-env-changed=FORCE_SKIA_BUILD
  cargo:rerun-if-env-changed=FORCE_SKIA_BINARIES_DOWNLOAD
  TRYING TO DOWNLOAD AND INSTALL SKIA BINARIES: 0.87.0/e551f334ad5cbdf43abf-x86_64-pc-windows-msvc-d3d-gl-pdf-textlayout-static
  cargo:rerun-if-env-changed=SKIA_BINARIES_URL
    FROM: https://github.com/rust-skia/skia-binaries/releases/download/0.87.0/skia-binaries-e551f334ad5cbdf43abf-x86_64-pc-windows-msvc-d3d-gl-pdf-textlayout-static.tar.gz
  DOWNLOAD AND INSTALL FAILED: curl error code: "22"
  curl stderr: "curl: (22) The requested URL returned error: 404\r\n"
  STARTING A FULL BUILD
  HOST: x86_64-pc-windows-msvc
  cargo:rerun-if-env-changed=CLANGCC
  cargo:rerun-if-env-changed=CC
  cargo:rerun-if-env-changed=CLANGCXX
  cargo:rerun-if-env-changed=CXX
  cargo:rerun-if-env-changed=OPT_LEVEL
  cargo:rerun-if-env-changed=SKIA_USE_SYSTEM_LIBRARIES
  cargo:rerun-if-env-changed=SDKTARGETSYSROOT
  cargo:rerun-if-env-changed=SDKROOT
  cargo:rerun-if-env-changed=VCINSTALLDIR
  cargo:rerun-if-env-changed=LLVM_HOME
  cargo:rerun-if-env-changed=USERPROFILE

  --- stderr
  Checking for "C:\\Program Files\\LLVM\\bin\\clang-cl.exe"
  Checking for "C:\\LLVM\\bin\\clang-cl.exe"
  Checking for "C:\\Users\\Administrator\\scoop\\apps\\llvm\\current\\bin\\clang-cl.exe"

  thread 'main' panicked at C:\Users\Administrator\.cargo\registry\src\index.crates.io-1949cf8c6b5b557f\skia-bindings-0.87.0\build_support\platform\windows.rs:32:13:
  Unable to locate LLVM installation
  note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

I have tried using LLVM, but it has had some issues:

  --- stderr
  Checking for "D:/Install/LLVM\\bin\\clang-cl.exe"

  thread 'main' panicked at C:\Users\Administrator\.cargo\registry\src\index.crates.io-1949cf8c6b5b557f\skia-bindings-0.87.0\build_support\skia\config.rs:385:9:
  >>>>> Probing for Python 3 failed, please make sure that it's available in PATH, probed executables are: ["python", "python3"] <<<<<
  note: run with RUST_BACKTRACE=1 environment variable to display a backtrace

Is a Python environment still required when using LLVM for compilation?

Reproducible Code (if applicable)

Environment Details

• Slint Version: 1.13.0
• Platform/OS: Windows10
• Programming Language: Rust
• Backend/Renderer: renderer-skia

Product Impact

No response

[tronical]

Could this be caused by the renderer-skia component of slint?

Yes. I suspect that the rust flags cause a rebuild. Generally, some configurations may require re-compiling skia - as opposed to the default of downloading pre-built versions. You're running into that, and for that your environment needs to be set up to compile Skia. This starts with making a version of Python 3 available in your %PATH%.