compat.openssl

// compat.openssl end-to-end: headers resolve, both archives link, and the
// library initialises far enough to stand up a TLS context and run a digest.
//
// Touching BOTH archives is the point: libssl.a (SSL_CTX_new, TLS_method) and
// libcrypto.a (EVP_*) — libssl.lib / libcrypto.lib on Windows. A link that
// silently dropped one, or picked up a host libssl.so instead of the package's
// own static build, fails here.
//
// HAVE_OPENSSL comes from this project's own cfg-gated cxxflags. The package
// is supported on all three platforms now (linux/macOS: perl Configure + GNU
// Make; windows: VC-WIN64A + nmake), so the real test runs everywhere.
#ifdef HAVE_OPENSSL
#include <openssl/ssl.h>
#include <openssl/evp.h>
#include <openssl/opensslv.h>

#include <cstring>

int main() {
    // Built from the 3.5.1 tarball this descriptor pins.
    if (OPENSSL_VERSION_MAJOR != 3 || OPENSSL_VERSION_MINOR != 5) return 1;

// …