fix builds on OpenSSL <= 1.0.x

I thought OpenSSL 1.0.x offered the new-style OpenSSL_version_num() API
to obtain version number, but they don't.

1 files changed, 6 insertions, 0 deletions

diff --git a/openbsd-compat/openssl-compat.h b/openbsd-compat/openssl-compat.h
index 9e0264c04..0fbf60df4 100644
--- a/openbsd-compat/openssl-compat.h
+++ b/openbsd-compat/openssl-compat.h
@@ -33,6 +33,12 @@ int ssh_compatible_openssl(long, long);
 # error OpenSSL 0.9.8f or greater is required
 #endif
 
+#if OPENSSL_VERSION_NUMBER < 0x10100000L
+# define OpenSSL_version_num    SSLeay
+# define OpenSSL_version        SSLeay_version
+# define OPENSSL_VERSION        SSLEAY_VERSION
+#endif
+
 #if OPENSSL_VERSION_NUMBER < 0x10000001L
 # define LIBCRYPTO_EVP_INL_TYPE unsigned int
 #else