Makefile will now build zlib and/or OpenSSL if needed.

-) Detecting system and embedded presence of zlib and OpenSSL with ALPN.
-) Automatically disabling secure targets if no OpenSSL present
--> make all won't work if no OpenSSL is present, forcing the users to select the nonsecure Makefile targets explicitely.
-) Removing build instructions for OpenSSL - this isn't really necessary anymore.
-) Adding more blurb about OpenSSL and the new Makefile features.
	Change on 2014/12/12 by nnoble <nnoble@google.com>
-------------
Created by MOE: http://code.google.com/p/moe-java
MOE_MIGRATED_REVID=82020890

3 files changed, 27 insertions, 0 deletions

diff --git a/test/build/event2.c b/test/build/event2.c
new file mode 100644
index 0000000000..f632b1e43e
--- /dev/null
+++ b/test/build/event2.c
@@ -0,0 +1,8 @@
+/* This is only a compilation test, to see if we have libevent installed. */
+
+#include <event2/event.h>
+
+int main() {
+  event_base_new();
+  return 0;
+}
diff --git a/test/build/openssl-alpn.c b/test/build/openssl-alpn.c
new file mode 100644
index 0000000000..f7365770f7
--- /dev/null
+++ b/test/build/openssl-alpn.c
@@ -0,0 +1,10 @@
+/* This is just a compilation test, to see if we have a version of OpenSSL with
+   ALPN support installed. */
+
+#include <stdlib.h>
+#include <openssl/ssl.h>
+
+int main() {
+  SSL_get0_alpn_selected(NULL, NULL, NULL);
+  return 0;
+}
diff --git a/test/build/zlib.c b/test/build/zlib.c
new file mode 100644
index 0000000000..75bce9ad16
--- /dev/null
+++ b/test/build/zlib.c
@@ -0,0 +1,9 @@
+/* This is just a compilation test, to see if we have zlib installed. */
+
+#include <stdlib.h>
+#include <zlib.h>
+
+int main() {
+  deflateInit(Z_NULL, Z_DEFAULT_COMPRESSION);
+  return 0;
+}