Cannot open include file: 'openssl/ssl.h': No such file or directory

```
TARGET = Some("x86_64-pc-windows-msvc")
OPT_LEVEL = Some("0")
TARGET = Some("x86_64-pc-windows-msvc")
HOST = Some("x86_64-pc-windows-msvc")
TARGET = Some("x86_64-pc-windows-msvc")
TARGET = Some("x86_64-pc-windows-msvc")
HOST = Some("x86_64-pc-windows-msvc")
CC_x86_64-pc-windows-msvc = None
CC_x86_64_pc_windows_msvc = None
HOST_CC = None
CC = None
TARGET = Some("x86_64-pc-windows-msvc")
HOST = Some("x86_64-pc-windows-msvc")
CFLAGS_x86_64-pc-windows-msvc = None
CFLAGS_x86_64_pc_windows_msvc = None
HOST_CFLAGS = None
CFLAGS = None
DEBUG = Some("true")
running: "C:\\Program Files\\Microsoft Visual Studio\\2022\\Community\\VC\\Tools\\MSVC\\14.34.31933\\bin\\HostX64\\x64\\cl.exe" "/nologo" "/MD" "/Z7" "/W4" "/FoC:\\Users\\SPT\\Desktop\\rust-grpc\\target\\debug\\build\\openssl-6f62ae9d80819d47\\out\\src/c_helpers.o" "/c" "src/c_helpers.c"
c_helpers.c
src/c_helpers.c(1): fatal error C1083: Cannot open include file: 'openssl/ssl.h': No such file or directory
exit code: 2

--- stderr
thread 'main' panicked at '

Internal error occurred: Command "C:\\Program Files\\Microsoft Visual Studio\\2022\\Community\\VC\\Tools\\MSVC\\14.34.31933\\bin\\HostX64\\x64\\cl.exe" "/nologo" "/MD" "/Z7" "/W4" "/FoC:\\Users\\SPT\\Desktop\\rust-grpc\\target\\debug\\build\\openssl-6f62ae9d80819d47\\out\\src/c_helpers.o" "/c" "src/c_helpers.c" with args "cl.exe" did not execute successfully (status code exit code: 2).

', C:\Users\SPT\.cargo\registry\src\github.com-1ecc6299db9ec823\gcc-0.3.55\src\lib.rs:1672:5
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
```

I'm on Windows 11 and
I have openssl (OpenSSL 3.0.7 1 Nov 2022 (Library: OpenSSL 3.0.7 1 Nov 2022) and all the environment variables are configured too

The build error occurs when compiling src/c_helpers.c, which includes openssl/ssl.h. Check the project's build system (likely Cargo.toml and build.rs) to see how OpenSSL is located. On Windows, the openssl-sys crate may need proper environment variables or vcpkg. Look for existing documentation on building with OpenSSL on Windows. Verify the fix by running the build command that failed.

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