X-Git-Url: https://tinc-vpn.org/git/browse?p=tinc;a=blobdiff_plain;f=m4%2Fopenssl.m4;h=e5c0939555b570aa7664ac45a4448f743deebd8d;hp=bf5ce9fcaae010fdef98cff8e61c5ec7fd60629a;hb=d9a62c6354d1e2ad78ee8c610518ae9f9ab012d1;hpb=c5c02a0861bf540e07fe64704cb97aae29c4cacf

diff --git a/m4/openssl.m4 b/m4/openssl.m4
index bf5ce9fc..e5c09395 100644
--- a/m4/openssl.m4
+++ b/m4/openssl.m4
@@ -28,4 +28,22 @@ AC_DEFUN(tinc_OPENSSL,
     [LIBS="$LIBS -lcrypto"],
     [AC_MSG_ERROR("OpenSSL libraries not found.")]
   )
+
+  AC_CHECK_FUNCS(RAND_pseudo_bytes)
+
+  AC_CHECK_FUNC(OpenSSL_add_all_algorithms,
+    [],
+    AC_CHECK_FUNC(SSLeay_add_all_algorithms,
+      [AC_DEFINE(HAVE_SSLEAY_ADD_ALL_ALGORITHMS)],
+      [AC_MSG_ERROR("Missing required OpenSSL functionality!")]
+    )
+  )
+
+  AC_CHECK_FUNC(dlopen,
+    [],
+    AC_CHECK_LIB(dl, dlopen,
+      [LIBS="$LIBS -ldl"],
+      [AC_MSG_ERROR("OpenSSL depends on libdl.")]
+    )
+  )
 ])