Preliminary Windows support

[davidcole1340]

Still some work to do but will use this to track progress.

Some caveats:

• Rust nightly is required. PHP uses __vectorcall on some functions which is supported in Rust via the abi_vectorcall nightly feature.
• Bindgen __vectorcall support has not been upstreamed yet and therefore requires using my fork.
• Only PHP installations from windows.php.net are supported at this point in time.
• You need to match MSVC (Microsoft Visual C++) versions with PHP. The extension must be linked with a MSVC version the same or earlier than the version of MSVC PHP was linked with. Visual Studio 2022 is not supported.
• I don't think tests are passing at the moment on Windows.
• If you manually define function handlers (i.e. ones that take Zend exceution data) you need to change to using the zend_fastcall! macro. Function handlers are __vectorcall on Windows and the macro will swap the ABI based on the target triple. Example:

// Before
pub extern "C" fn test_handler(ex: &mut ExecutionData, retval: &mut Zval) {
  // ...
}

// After
use ext_php_rs::zend_fastcall;

zend_fastcall! {
  pub extern fn test_handler(ex: &mut ExecutionData, retval: &mut Zval) {
    // ...
  }
}

[SQKo]

wintendo user here approves

[davidcole1340]

Some updates:

• CI now passing on Windows
• Bindgen patches have been upstreamed but not released: Add support for vectorcall ABI rust-lang/rust-bindgen#2177
• Now using rust-lld linker (LLVM linker) so don't need to worry about matching linker versions (MSVC is still required to compile C wrapper)

[reeperbahnause]

Hi, I just tried to build the hello_world example on my local Windows but i still get the error regarding the missing php-config. Do you have a hint for what I'm missing?

[SQKo]

Hi, I just tried to build the hello_world example on my local Windows but i still get the error regarding the missing php-config. Do you have a hint for what I'm missing?

Hey, It's working for me on windows.
Are you using the latest master branch? Try it

Otherwise please post the details of the errors.