Tutorial for static builds on windows?

[Jonathan]

Can't seem to find any guide for building staticically on windows.

#104 (comment)

@twistedfall left a message in that comment with a link to https://github.com/twistedfall/opencv-rust#static-build but it does not exist anymore unfortunately.

My current attempt uses the following env vars

[env]
LIBCLANG_PATH="C:\\Program Files\\Microsoft Visual Studio\\2022\\Community\\VC\\Tools\\Llvm\\x64\\bin"
OPENCV_INCLUDE_PATHS="C:\\tools\\opencv\\build\\include"
OPENCV_HEADER_DIR="C:\\tools\\opencv\\build\\include"
OPENCV_LINK_PATHS="C:\\tools\\opencv\\build\\x64\\vc16\\lib"
OPENCV_LINK_LIBS="opencv_world4100.lib"
OPENCV_MSVC_CRT="static"

but it still looks for a dll on startup

[Jonathan]

Possible found the answer here: https://github.com/spoorn/media-to-ascii/blob/a01017fbb3dc883a89b0a1aff237c69b072542b2/.github/workflows/build.yml

Will reopen it if it does not work.

[twistedfall]

I've moved the installation guide into a separate file, so this is now the correct link: https://github.com/twistedfall/opencv-rust/blob/master/INSTALL.md#static-build

I haven't really tried building and linking statically on Windows myself, so if you have success please share and I'll link to your comment in the readme, thanks!

[Jonathan]

@twistedfall ended up getting it to work, using a mix of vcpkg and choco.

I used choco install llvm

I used https://github.com/mcgoo/cargo-vcpkg

Added the following to my Cargo.toml file in the root of the project:

[package.metadata.vcpkg]
git = "https://github.com/microsoft/vcpkg"
rev = "94a50e8"

[package.metadata.vcpkg.target]
x86_64-pc-windows-msvc = { triplet = "x64-windows-static-release", dependencies = ["opencv4[contrib,nonfree]"] }

Then create a cargo config file in project_root/.cargo/config.toml and add the following.

[env]
OPENCV_INCLUDE_PATHS= { value = "target\\vcpkg\\installed\\x64-windows-static-release\\include", relative = true }
OPENCV_LINK_PATHS= { value = "target\\vcpkg\\installed\\x64-windows-static-release\\lib", relative = true }
OPENCV_LINK_LIBS="opencv_core4.lib,opencv_imgproc4.lib,zlib.lib"
OPENCV_MSVC_CRT="static"

Then run cargo vcpkg -v build.

Once that completes you'll be able to use cargo as normal. Eg cargo build, cargo build --release etc.

[adminSxs]

opencv4[contrib,nonfree]

@twistedfall ended up getting it to work, using a mix of vcpkg and choco.

I used choco install llvm

I used https://github.com/mcgoo/cargo-vcpkg

Added the following to my Cargo.toml file in the root of the project:

[package.metadata.vcpkg]
git = "https://github.com/microsoft/vcpkg"
rev = "94a50e8"

[package.metadata.vcpkg.target]
x86_64-pc-windows-msvc = { triplet = "x64-windows-static-release", dependencies = ["opencv4[contrib,nonfree]"] }

Then create a cargo config file in project_root/.cargo/config.toml and add the following.

[env]
OPENCV_INCLUDE_PATHS= { value = "target\\vcpkg\\installed\\x64-windows-static-release\\include", relative = true }
OPENCV_LINK_PATHS= { value = "target\\vcpkg\\installed\\x64-windows-static-release\\lib", relative = true }
OPENCV_LINK_LIBS="opencv_core4.lib,opencv_imgproc4.lib,zlib.lib"
OPENCV_MSVC_CRT="static"

Then run cargo vcpkg -v build.

Once that completes you'll be able to use cargo as normal. Eg cargo build, cargo build --release etc.

Hello, cargo vcpk -v build success,but i add

[dependencies]
opencv="*"

show below error

  === OpenCV library configuration: Library {
      include_paths: [
          "D:\\projects\\rust\\opencv4\\target\\vcpkg\\installed\\x64-windows-static-release\\include",
      ],
      version: Version {
          major: 0,
          minor: 0,
          patch: 0,
      },
      cargo_metadata: [
          "cargo:rustc-link-search=D:\\projects\\rust\\opencv4\\target\\vcpkg\\installed\\x64-windows-static-release\\lib",
          "cargo:rustc-link-lib=opencv_core4",
          "cargo:rustc-link-lib=opencv_imgproc4",
          "cargo:rustc-link-lib=zlib",
      ],
  }
  thread 'main' panicked at D:\software\cargo\registry\src\rsproxy.cn-8f6827c7555bfaf8\opencv-0.89.0\build.rs:346:9:
  Unsupported OpenCV version: 0.0.0, must be from 3.2, 3.4 or 4.x branch

[Jonathan]

@adminSxs your version of opencv is outdated. Use 0.92.0

Here is my opencv entry in Cargo.toml

opencv  = { version = "0.92.0", default-features = false,features = ["rgb", "imgproc"] }