Static Compilation Doesn't Work According to Docs

[naftulikay]

On the README it says the following relating to static compiling OpenSSL:

OPENSSL_STATIC - If specified, OpenSSL libraries will be statically rather than dynamically linked.

Passing this environment variable has no effect if OPENSSL_LIB_DIR and OPENSSL_INCLUDE_DIR are not specified.: https://github.com/naftulikay/rust-openssl-static-example/pull/

[sfackler]

pkg-config also looks at OPENSSL_STATIC, but you may be running into rust-lang/pkg-config-rs#37