Static builds fails on Windows

[SteffenSunde]

Hi,

Trying to compile statically with HDF5 fails on windows (VS17, rust 1.77.2). Found some useful discussions in here but still have problems.

• Installed HDF5 1.14.3 (also tried versions 1.10.11 and 1.12.3)
• Added to Cargo.toml:

  hdf5 = { git = "https://github.com/aldanor/hdf5-rust.git" }
  hdf5-sys = { git = "https://github.com/aldanor/hdf5-rust.git", features = ["static"]}

• Set HDF5_DIR environment variable to C:\Program Files\HDF_Group\HDF5\1.14.3
• cargo build cause 262 errors like the following

  
  error[E0308]: mismatched types
  --> C:\Users\heyjoe\.cargo\git\checkouts\hdf5-rust-c1072d7a2617f7d8\694e900\hdf5\src\globals.rs:44:68
  |
  44  |         pub static $rust_name: H5GlobalConstant = H5GlobalConstant($c_name);
  |                                                   ---------------- ^^^^^^^ expected `&usize`, found `&i64`
  |                                                   |
  |                                                   arguments to this struct are incorrect
  ...
  322 | link_hid!(H5E_BADSIZE, h5e::H5E_BADSIZE);
  | ---------------------------------------- in this macro invocation
  |
  = note: expected reference `&'static usize`
             found reference `&'static i64`
  note: tuple struct defined here
  --> C:\Users\heyjoe\.cargo\git\checkouts\hdf5-rust-c1072d7a2617f7d8\694e900\hdf5\src\globals.rs:19:12
  |
  19  | pub struct H5GlobalConstant(
  |            ^^^^^^^^^^^^^^^^
  = note: this error originates in the macro `link_hid` (in Nightly builds, run with -Z macro-backtrace for more info)

For more information about this error, try rustc --explain E0308. error: could not compile hdf5 (lib) due to 262 previous errors

Hope get some help with this. Thank you very much!

[mulimoen]

It is likely the wrong path triggers in https://github.com/aldanor/hdf5-rust/blob/694e900972fbf5ffbdd1a2294f57a2cc3a91c994/hdf5/src/globals.rs#L19 causing the build error. I don't think the build script is clever enough to choose the right library to link and tries the wrong one.

The static feature of hdf5-sys should compile hdf5 from scratch, so you should not need to set HDF5_DIR (or compile the library yourself).

[SteffenSunde]

You're right! Removing the environment variable and rebooting solved the issue. Thank you very much!