Unable to cross compile from Windows to Android arm64-v8a

[ieshaan12]

Dependencies as specified in cargo.toml -

[dependencies]
openssl = { version = "0.10.35", features = ["vendored"] }

To ensure override as per the manual config, I've set the environment variables as follows (as recommended in #1542)-

OPENSSL_DIR - C:\Program Files\OpenSSL-Win64
OPENSSL_INCLUDE_DIR - C:\Program Files\OpenSSL-Win64\include
OPENSSL_LIB_DIR - C:\Program Files\OpenSSL-Win64\lib\VC\x64\MD

Its working successfully for me if the target and host are both Windows.

However it fails during the cross-compilation with the following error -

 Error configuring OpenSSL build:
      'perl' reported failure with exit code: 255
      Command failed: "perl" "./Configure" "--prefix=C:/Users/{username}/Desktop/Rust/android_ssl/target/aarch64-linux-android/debug/build/openssl-sys-5ec247b7e6331805/out/openssl-build/install" "--openssldir=/usr/local/ssl" "no-shared" "no-module" "no-ssl3" "no-tests" "no-comp" "no-zlib" "no-zlib-dynamic" "--libdir=lib" "no-md2" "no-rc5" "no-weak-ssl-ciphers" "no-camellia" "no-idea" "no-seed" "no-stdio" "linux-aarch64" "-O2" "-DANDROID" "-ffunction-sections" "-fdata-sections" "-fPIC" "-gdwarf-2" "-fno-omit-frame-pointer" "--target=aarch64-linux-android" "--target=aarch64-linux-android21"

I'm using cargo-ndk to do the cross compilation like so -
cargo ndk -t arm64-v8a -o ./jniLibs build

I've tried a similar thing to cross-compile from MacOS to Android. This has worked fine for me, with the same configuration of the Cargo.toml file.

The issue seems to come only while cross-compiling from Windows to Android.

[ieshaan12]

I tried one more thing here, explicitly setting environment variables for cargo in ./.cargo/config.toml -

[env]
OPENSSL_DIR = { value = "C:\\Program Files\\OpenSSL-Win64" }
OPENSSL_INCLUDE_DIR = { value = "C:\\Program Files\\OpenSSL-Win64\\include" }
OPENSSL_LIB_DIR = { value = "C:\\Program Files\\OpenSSL-Win64\\lib\\VC\\x64\\MD" }

Still failed with the error above.