Cmake cannot find Visual Studio under the MSVC cross image

[AregevDev]

Hello, I am trying to use the x86_64-pc-windows-msvc docker image. I can compile a "hello world" program. However, when trying to build raylib-sys, the build fails:

[oak@compooter samples]$ cross build --target x86_64-pc-windows-msvc --bin logo
warning: value assigned to `profile` is never read
  --> /home/oak/Documents/raylib-rs/raylib-sys/build.rs:65:13
   |
65 |     let mut profile = "";
   |             ^^^^^^^
   |
   = help: maybe it is overwritten before being read?
   = note: `#[warn(unused_assignments)]` on by default

warning: `raylib-sys` (build script) generated 1 warning
   Compiling raylib-sys v5.0.1 (/home/oak/Documents/raylib-rs/raylib-sys)
error: failed to run custom build command for `raylib-sys v5.0.1 (/home/oak/Documents/raylib-rs/raylib-sys)`

Caused by:
  process didn't exit successfully: `/target/debug/build/raylib-sys-5bc5bad159c96967/build-script-build` (exit status: 101)
  --- stdout
  cargo:rerun-if-changed=build.rs
  cargo:rerun-if-changed=./binding/binding.h
  CMAKE_GENERATOR_x86_64-pc-windows-msvc = None
  CMAKE_GENERATOR_x86_64_pc_windows_msvc = None
  TARGET_CMAKE_GENERATOR = None
  CMAKE_GENERATOR = None
  CMAKE_PREFIX_PATH_x86_64-pc-windows-msvc = None
  CMAKE_PREFIX_PATH_x86_64_pc_windows_msvc = None
  TARGET_CMAKE_PREFIX_PATH = None
  CMAKE_PREFIX_PATH = None
  CMAKE_x86_64-pc-windows-msvc = None
  CMAKE_x86_64_pc_windows_msvc = None
  TARGET_CMAKE = None
  CMAKE = None

  --- stderr
  thread 'main' panicked at /cargo/registry/src/index.crates.io-6f17d22bba15001f/cmake-0.1.50/src/lib.rs:955:25:


  couldn't determine visual studio generator
  if VisualStudio is installed, however, consider running the appropriate vcvars script before building this crate

  note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

How can I run vcvarsall.bat before running the build command?

[Emilgardis]

Interesting! I thought this was fixed but seems it's a different issue that wasn't fixed with rust-lang/cc-rs#907.

The problem is that find_vs_version expects a version to be defined.
We should probably set VisualStudioVersion=17.0 here

relevant lines in cmake:
https://github.com/rust-lang/cmake-rs/blob/c4a60dd154dd90e469dffc41a1faa717704f90b3/src/lib.rs#L943C17-L943C33

and fix in cc that removed a bunch of assumptions
rust-lang/cc-rs#907

can you try adding

#Cross.toml
[target.x86_64-pc-windows-msvc.env]
passthrough = ["VisualStudioVersion=17.0"]

[AregevDev]

I added the passthrough variable, and it cannot find the Visual Studio generator. msvc-wine's repo said cmake is supported under ninja or make. I get this error when trying to use make:

[oak@compooter samples]$ cross build --target x86_64-pc-windows-msvc --bin logo
warning: value assigned to `profile` is never read
  --> /home/oak/Documents/raylib-rs/raylib-sys/build.rs:65:13
   |
65 |     let mut profile = "";
   |             ^^^^^^^
   |
   = help: maybe it is overwritten before being read?
   = note: `#[warn(unused_assignments)]` on by default

warning: `raylib-sys` (build script) generated 1 warning
   Compiling raylib-sys v5.0.1 (/home/oak/Documents/raylib-rs/raylib-sys)
error: failed to run custom build command for `raylib-sys v5.0.1 (/home/oak/Documents/raylib-rs/raylib-sys)`

Caused by:
  process didn't exit successfully: `/target/debug/build/raylib-sys-5bc5bad159c96967/build-script-build` (exit status: 101)
  --- stdout
  cargo:rerun-if-changed=build.rs
  cargo:rerun-if-changed=./binding/binding.h
  CMAKE_TOOLCHAIN_FILE_x86_64-pc-windows-msvc = None
  CMAKE_TOOLCHAIN_FILE_x86_64_pc_windows_msvc = None
  TARGET_CMAKE_TOOLCHAIN_FILE = None
  CMAKE_TOOLCHAIN_FILE = None
  CMAKE_PREFIX_PATH_x86_64-pc-windows-msvc = None
  CMAKE_PREFIX_PATH_x86_64_pc_windows_msvc = None
  TARGET_CMAKE_PREFIX_PATH = None
  CMAKE_PREFIX_PATH = None
  CMAKE_x86_64-pc-windows-msvc = None
  CMAKE_x86_64_pc_windows_msvc = None
  TARGET_CMAKE = None
  CMAKE = None
  running: cd "/target/x86_64-pc-windows-msvc/debug/build/raylib-sys-92e1cacfa9e5f70f/out/build" && CMAKE_PREFIX_PATH="" "cmake" "/target/x86_64-pc-windows-msvc/debug/build/raylib-sys-92e1cacfa9e5f70f/out/raylib" "-Thost=x64" "-Ax64" "-G" "Unix Makefiles" "-DCMAKE_BUILD_TYPE=Debug" "-DBUILD_EXAMPLES=OFF" "-DCMAKE_BUILD_TYPE=Debug" "-DSUPPORT_BUSY_WAIT_LOOP=OFF" "-DSUPPORT_FILEFORMAT_JPG=ON" "-DRAYMATH_STATIC_INLINE=ON" "-DUSE_WAYLAND=OFF" "-DOPENGL_VERSION=OFF" "-DPLATFORM=Desktop" "-DCMAKE_SYSTEM_NAME=Windows" "-DCMAKE_SYSTEM_PROCESSOR=AMD64" "-DCMAKE_INSTALL_PREFIX=/target/x86_64-pc-windows-msvc/debug/build/raylib-sys-92e1cacfa9e5f70f/out" "-DCMAKE_C_FLAGS= -nologo -MD -Brepro" "-DCMAKE_C_COMPILER=/opt/msvc/bin/x64/cl.exe" "-DCMAKE_CXX_FLAGS= -nologo -MD -Brepro" "-DCMAKE_CXX_COMPILER=/opt/msvc/bin/x64/cl.exe" "-DCMAKE_ASM_FLAGS= -nologo -MD -Brepro" "-DCMAKE_ASM_COMPILER=/opt/msvc/bin/x64/cl.exe"
  -- Configuring incomplete, errors occurred!
  See also "/target/x86_64-pc-windows-msvc/debug/build/raylib-sys-92e1cacfa9e5f70f/out/build/CMakeFiles/CMakeOutput.log".

  --- stderr
  CMake Error at CMakeLists.txt:2 (project):
    Generator

      Unix Makefiles

    does not support platform specification, but platform

      x64

    was specified.


  thread 'main' panicked at /cargo/registry/src/index.crates.io-6f17d22bba15001f/cmake-0.1.50/src/lib.rs:1098:5:

  command did not execute successfully, got: exit status: 1

  build script failed, must exit now
  note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
[oak@compooter samples]$ 

I think we'll need a cmake toolchain file to specify the generator and remove that -A flag. I am not sure if there's a way to specify a system-wide toolchain. I want to avoid modifying raylib-sys's cmake file / build.rs

[AregevDev]

Also maybe add ninja to the image file