Failed to run custom build command for `openssl-sys v0.9.39`

[sh-zam]

Command used: $ cargo build --target="arm-linux-andorideabi" --release

error: failed to run custom build command for `openssl-sys v0.9.39`
process didn't exit successfully: `/root/src/target/debug/build/openssl-sys-78431d3183627107/build-script-main` (exit code: 101)
--- stdout
cargo:rerun-if-env-changed=ARM_LINUX_ANDROIDEABI_OPENSSL_LIB_DIR
cargo:rerun-if-env-changed=OPENSSL_LIB_DIR
cargo:rerun-if-env-changed=ARM_LINUX_ANDROIDEABI_OPENSSL_INCLUDE_DIR
cargo:rerun-if-env-changed=OPENSSL_INCLUDE_DIR
cargo:rerun-if-env-changed=ARM_LINUX_ANDROIDEABI_OPENSSL_DIR
cargo:rerun-if-env-changed=OPENSSL_DIR
run pkg_config fail: "Cross compilation detected. Use PKG_CONFIG_ALLOW_CROSS=1 to override"

--- stderr
thread 'main' panicked at '

Could not find directory of OpenSSL installation, and this `-sys` crate cannot
proceed without this knowledge. If OpenSSL is installed and this crate had
trouble finding it,  you can set the `OPENSSL_DIR` environment variable for the
compilation process.

Make sure you also have the development packages of openssl installed.
For example, `libssl-dev` on Ubuntu or `openssl-devel` on Fedora.

If you're in a situation where you think the directory *should* be found
automatically, please open a bug at https://github.com/sfackler/rust-openssl
and include information about your system as well as this message.

    $HOST = x86_64-unknown-linux-gnu
    $TARGET = arm-linux-androideabi
    openssl-sys = 0.9.39

', /root/.cargo/registry/src/github.com-1ecc6299db9ec823/openssl-sys-0.9.39/build/main.rs:269:9
note: Run with `RUST_BACKTRACE=1` for a backtrace.

Build failed, waiting for other jobs to finish...
error: build failed