What are the build modes?
There are five build modes that affect the build size (library sizes from a 32 bit Linux FC3 system) – Basic SSL server mode The simplest version with no client functionality. It results in a library about 45kB in size. Use this mode if you are doing standard SSL server work. SSL Server mode with client verification If client authentication is required. It results in a library about 49kB in size. Use this mode if you have an SSL server which requires client authentication (which is uncommon in browser applications). SSL Client/Server Client functionality has been added. It results in a library about 51kB in size. Use this mode if you require axTLS to use SSL client functionality (the SSL server code is always enabled). SSL Client/Server with diagnostics. The same as client/server but with many text strings added for diagnosing issues. It results in a library about 58kB in size. It is suggested that this mode is used only during development, or for systems that have more generous memory