diff --git a/indra/llcommon/tests/commonmisc_test.cpp b/indra/llcommon/tests/commonmisc_test.cpp
index 1dc1e267dbfc413e43bd6f6e31892d3fc4871222..a18364b6b31f280d08f87df783b34f2e71b495f1 100644
--- a/indra/llcommon/tests/commonmisc_test.cpp
+++ b/indra/llcommon/tests/commonmisc_test.cpp
@@ -41,7 +41,6 @@
 #include "../llmemorystream.h"
 #include "../llsd.h"
 #include "../llsdserialize.h"
-#include "../u64.h"
 
 #include "../test/lltut.h"
 
@@ -466,51 +465,6 @@ namespace tut
 
 namespace tut
 {
-	struct U64_data
-	{
-	};
-	typedef test_group<U64_data> U64_test;
-	typedef U64_test::object U64_object;
-	tut::U64_test U64_testcase("U64_conversion");
-
-
-	// U64_to_F64
-	template<> template<>
-	void U64_object::test<1>()
-	{
-		F64 val;
-		F64 result;
-
-		result = 18446744073709551610.0;
-		val = U64_to_F64(U64L(18446744073709551610));
-		ensure_equals("U64_to_F64 converted 3.1", val, result);
-
-		result = 18446744073709551615.0; // 0xFFFFFFFFFFFFFFFF
-		val = U64_to_F64(U64L(18446744073709551615));
-		ensure_equals("U64_to_F64 converted 3.2", val, result);
-
-		result = 0.0; // overflow 0xFFFFFFFFFFFFFFFF + 1 == 0
-		// overflow - will result in warning at compile time
-		val = U64_to_F64(U64L(18446744073709551615)+1);
-		ensure_equals("U64_to_F64 converted 3.3", val, result);
-
-		result = 0.0; // 0
-		val = U64_to_F64(U64L(0));
-		ensure_equals("U64_to_F64 converted 3.4", val, result);
-
-		result = 1.0; // odd
-		val = U64_to_F64(U64L(1));
-		ensure_equals("U64_to_F64 converted 3.5", val, result);
-
-		result = 2.0; // even
-		val = U64_to_F64(U64L(2));
-		ensure_equals("U64_to_F64 converted 3.6", val, result);
-
-		result = U64L(0x7FFFFFFFFFFFFFFF) * 1.0L; // 0x7FFFFFFFFFFFFFFF
-		val = U64_to_F64(U64L(0x7FFFFFFFFFFFFFFF));
-		ensure_equals("U64_to_F64 converted 3.7", val, result);
-	}
-
 	// llstrtou64 
 	// seems to be deprecated - could not find it being used 
 	// anywhere in the tarball - skipping unit tests for now
diff --git a/indra/llcommon/tests/llsingleton_test.cpp b/indra/llcommon/tests/llsingleton_test.cpp
index 56886bc73fd9185932f76c82d0d72232cc5c4e5c..6338e9a9cb672e549d7288fd71be3ee4480a8507 100644
--- a/indra/llcommon/tests/llsingleton_test.cpp
+++ b/indra/llcommon/tests/llsingleton_test.cpp
@@ -46,8 +46,8 @@ public:                                             \
         DEP_INIT  /* dependency in initSingleton */ \
     } sDepFlag;                                     \
                                                     \
-    void initSingleton();                           \
-    void cleanupSingleton();                        \
+    void initSingleton() override;                  \
+    void cleanupSingleton() override;               \
 };                                                  \
                                                     \
 CLS::dep_flag CLS::sDepFlag = DEP_NONE
diff --git a/indra/llcommon/tests/wrapllerrs.h b/indra/llcommon/tests/wrapllerrs.h
index 5d51a558e8993493a8598368b8e4d794bd08204f..7c4b4fbd440a2a02677e41436b4b542a60976f3e 100644
--- a/indra/llcommon/tests/wrapllerrs.h
+++ b/indra/llcommon/tests/wrapllerrs.h
@@ -158,12 +158,6 @@ private:
     MessageList mMessages;
 };
 
-inline
-std::ostream& operator<<(std::ostream& out, const CaptureLogRecorder& log)
-{
-    return log.streamto(out);
-}
-
 /**
  * Capture log messages. This is adapted (simplified) from the one in
  * llerror_test.cpp.
diff --git a/indra/llcorehttp/examples/http_texture_load.cpp b/indra/llcorehttp/examples/http_texture_load.cpp
index 10fdc3f70b9c63542bc5de1cae7d6f6e1afc7c0f..c95c11d889c3ca870de6a83f7fb9789342349598 100644
--- a/indra/llcorehttp/examples/http_texture_load.cpp
+++ b/indra/llcorehttp/examples/http_texture_load.cpp
@@ -52,8 +52,6 @@
 
 void init_curl();
 void term_curl();
-unsigned long ssl_thread_id_callback(void);
-void ssl_locking_callback(int mode, int type, const char * file, int line);
 void usage(std::ostream & out);
 
 // Default command line settings
@@ -606,63 +604,14 @@ void WorkingSet::loadAssetUuids(FILE * in)
 }
 
 
-int ssl_mutex_count(0);
-LLCoreInt::HttpMutex ** ssl_mutex_list = NULL;
-
 void init_curl()
 {
 	curl_global_init(CURL_GLOBAL_ALL);
-
-	ssl_mutex_count = CRYPTO_num_locks();
-	if (ssl_mutex_count > 0)
-	{
-		ssl_mutex_list = new LLCoreInt::HttpMutex * [ssl_mutex_count];
-		
-		for (int i(0); i < ssl_mutex_count; ++i)
-		{
-			ssl_mutex_list[i] = new LLCoreInt::HttpMutex;
-		}
-
-		CRYPTO_set_locking_callback(ssl_locking_callback);
-		CRYPTO_set_id_callback(ssl_thread_id_callback);
-	}
 }
 
 
 void term_curl()
 {
-	CRYPTO_set_locking_callback(NULL);
-	for (int i(0); i < ssl_mutex_count; ++i)
-	{
-		delete ssl_mutex_list[i];
-	}
-	delete [] ssl_mutex_list;
-}
-
-
-unsigned long ssl_thread_id_callback(void)
-{
-#if defined(WIN32)
-	return (unsigned long) GetCurrentThreadId();
-#else
-	return (unsigned long) pthread_self();
-#endif
-}
-
-
-void ssl_locking_callback(int mode, int type, const char * /* file */, int /* line */)
-{
-	if (type >= 0 && type < ssl_mutex_count)
-	{
-		if (mode & CRYPTO_LOCK)
-		{
-			ssl_mutex_list[type]->lock();
-		}
-		else
-		{
-			ssl_mutex_list[type]->unlock();
-		}
-	}
 }
 
 
diff --git a/indra/llcorehttp/tests/llcorehttp_test.cpp b/indra/llcorehttp/tests/llcorehttp_test.cpp
index b4627c5a244a26b41529ce52a2ab33278fd53f6b..961492017232872001fa6f3ad39252f60fd09ba0 100755
--- a/indra/llcorehttp/tests/llcorehttp_test.cpp
+++ b/indra/llcorehttp/tests/llcorehttp_test.cpp
@@ -51,9 +51,6 @@
 #include "llproxy.h"
 #include "llcleanup.h"
 
-unsigned long ssl_thread_id_callback(void);
-void ssl_locking_callback(int mode, int type, const char * file, int line);
-
 #if 0	// lltut provides main and runner
 
 namespace tut
@@ -85,20 +82,6 @@ void init_curl()
 {
 	curl_global_init(CURL_GLOBAL_ALL);
 
-	ssl_mutex_count = CRYPTO_num_locks();
-	if (ssl_mutex_count > 0)
-	{
-		ssl_mutex_list = new LLCoreInt::HttpMutex * [ssl_mutex_count];
-		
-		for (int i(0); i < ssl_mutex_count; ++i)
-		{
-			ssl_mutex_list[i] = new LLCoreInt::HttpMutex;
-		}
-
-		CRYPTO_set_locking_callback(ssl_locking_callback);
-		CRYPTO_set_id_callback(ssl_thread_id_callback);
-	}
-
 	LLProxy::getInstance();
 }
 
@@ -106,39 +89,6 @@ void init_curl()
 void term_curl()
 {
 	SUBSYSTEM_CLEANUP(LLProxy);
-	
-	CRYPTO_set_locking_callback(NULL);
-	for (int i(0); i < ssl_mutex_count; ++i)
-	{
-		delete ssl_mutex_list[i];
-	}
-	delete [] ssl_mutex_list;
-}
-
-
-unsigned long ssl_thread_id_callback(void)
-{
-#if defined(WIN32)
-	return (unsigned long) GetCurrentThreadId();
-#else
-	return (unsigned long) pthread_self();
-#endif
-}
-
-
-void ssl_locking_callback(int mode, int type, const char * /* file */, int /* line */)
-{
-	if (type >= 0 && type < ssl_mutex_count)
-	{
-		if (mode & CRYPTO_LOCK)
-		{
-			ssl_mutex_list[type]->lock();
-		}
-		else
-		{
-			ssl_mutex_list[type]->unlock();
-		}
-	}
 }
 
 
diff --git a/indra/llkdu/tests/llimagej2ckdu_test.cpp b/indra/llkdu/tests/llimagej2ckdu_test.cpp
index 5a17d782a947e605d8698034949c3d5f42d789ac..9b6876f77a7415217c49c53a8a6ec745f8286f5b 100644
--- a/indra/llkdu/tests/llimagej2ckdu_test.cpp
+++ b/indra/llkdu/tests/llimagej2ckdu_test.cpp
@@ -28,6 +28,9 @@
 #include "linden_common.h"
 // Class to test 
 #include "llimagej2ckdu.h"
+#ifdef LL_CLANG
+#  pragma GCC diagnostic ignored "-Wunused-private-field"
+#endif // LL_CLANG
 #include "llkdumem.h"
 #include "kdu_block_coding.h"
 // Tut header
@@ -135,9 +138,9 @@ void kdu_resolution::get_dims(kdu_dims& ) { }
 int kdu_resolution::which() { return 0; }
 int kdu_resolution::get_valid_band_indices(int &) { return 1; }
 kdu_synthesis::kdu_synthesis(kdu_resolution, kdu_sample_allocator*, bool, float, kdu_thread_env*, kdu_thread_queue*) { }
-//kdu_params::kdu_params(const char*, bool, bool, bool, bool, bool) { }
-kdu_params::kdu_params(const char*, bool, bool, bool, bool, bool, kd_core_local::kd_coremem*) {}
 kdu_params::~kdu_params() { }
+void kdu_params::destroy() { }
+kdu_params::kdu_params(char const*, bool, bool, bool, bool, bool) { }
 void kdu_params::set(const char* , int , int , bool ) { }
 void kdu_params::set(const char* , int , int , int ) { }
 void kdu_params::finalize_all(bool ) { }
@@ -151,6 +154,7 @@ kdu_params* kdu_params::access_relation(int, int, int, bool) { return NULL; }
 kdu_params* kdu_params::access_cluster(const char*) { return NULL; }
 void kdu_codestream::set_fast() { }
 void kdu_codestream::set_fussy() { }
+kdu_codestream_comment kdu_codestream::get_comment(kdu_core::kdu_codestream_comment e ) { return e; }
 void kdu_codestream::get_dims(int, kdu_dims&, bool ) { }
 int kdu_codestream::get_min_dwt_levels() { return 5; }
 int kdu_codestream::get_max_tile_layers() { return 1; }
@@ -187,6 +191,7 @@ void kdu_subband::close_block(kdu_block*, kdu_thread_env*) { }
 void kdu_subband::get_valid_blocks(kdu_dims &indices) const { }
 kdu_block * kdu_subband::open_block(kdu_coords, int *, kdu_thread_env *, int, bool) { return NULL; }
 bool kdu_codestream_comment::put_text(const char*) { return false; }
+const char * kdu_codestream_comment::get_text() { return nullptr; }
 void kdu_customize_warnings(kdu_message*) { }
 void kdu_customize_errors(kdu_message*) { }
 kdu_long kdu_multi_analysis::create(
@@ -202,6 +207,7 @@ kdu_long kdu_multi_analysis::create(
     kdu_membroker*) { return kdu_long(0); }
 void kdu_multi_analysis::destroy(kdu_thread_env *) {}
 siz_params::siz_params(kd_core_local::kd_coremem*) : kdu_params(NULL, false, false, false, false, false) { }
+siz_params::siz_params() : kdu_params(NULL, false, false, false, false, false) {}
 siz_params::~siz_params() {}
 void siz_params::finalize(bool ) { }
 void siz_params::copy_with_xforms(kdu_params*, int, int, bool, bool, bool) { }
diff --git a/indra/newview/tests/lllogininstance_test.cpp b/indra/newview/tests/lllogininstance_test.cpp
index bda96ecb07713a9bc145df322835a035dddf94d7..fbf2f36904b3e8ef76b94c21cfc2fdceec9bf693 100644
--- a/indra/newview/tests/lllogininstance_test.cpp
+++ b/indra/newview/tests/lllogininstance_test.cpp
@@ -305,10 +305,10 @@ S32 LLNotification::getSelectedOption(const LLSD& notification, const LLSD& resp
 #include "../llmachineid.h"
 unsigned char gMACAddress[MAC_ADDRESS_BYTES] = {77,21,46,31,89,2};
 
-S32 LLMachineID::getUniqueID(unsigned char *unique_id, size_t len)
+U32 LLMachineID::getUniqueID(U8 unique_id[32], size_t len) const
 {
 	memcpy(unique_id, gMACAddress, len);
-	return 1;
+	return 6;
 }
 //-----------------------------------------------------------------------------
 // misc
diff --git a/indra/newview/tests/llsechandler_basic_test.cpp b/indra/newview/tests/llsechandler_basic_test.cpp
index cc696a4841bf637cbc1aa0cad29988670e8cb42d..c253c0e1691bd04d1ffb836d6db2eb33dbc29834 100644
--- a/indra/newview/tests/llsechandler_basic_test.cpp
+++ b/indra/newview/tests/llsechandler_basic_test.cpp
@@ -28,6 +28,7 @@
 #include "../llviewerprecompiledheaders.h"
 #include "../test/lltut.h"
 #include "../llsecapi.h"
+#include "../llsecapicerthandler.h"
 #include "../llsechandler_basic.h"
 #include "../../llxml/llcontrol.h"
 #include "../llviewernetwork.h"
@@ -100,18 +101,19 @@ void LLCredential::identifierType(std::string &idType) {}
 void LLCredential::authenticatorType(std::string &idType) { }
 LLSD LLCredential::asLLSD(bool save_authenticator) { return LLSD(); }
 /*static*/ std::string LLCredential::userIDFromIdentifier(const LLSD& sdIdentifier) { return std::string(); }
-/*static*/ std::string LLCredential::userNameFromIdentifier(const LLSD& sdIdentifier) { return std::string(); }
+/*static*/ std::string LLCredential::usernameFromIdentifier(const LLSD& identifier) { return std::string(); }
 
 LLControlGroup gSavedSettings("test");
 unsigned char gMACAddress[MAC_ADDRESS_BYTES] = {77,21,46,31,89,2};
 
 
-S32 LLMachineID::getUniqueID(unsigned char *unique_id, size_t len)
+U32 LLMachineID::getUniqueID(U8 unique_id[32], size_t len) const
 {
 	memcpy(unique_id, gMACAddress, len);
 	return 1;
 }
-S32 LLMachineID::init() { return 1; }
+
+bool LLMachineID::init() { return true; }
 	
 
 // -------------------------------------------------------------------------------------------
@@ -594,11 +596,9 @@ namespace tut
         
 		sechandler_basic_test()
 		{
-            LLMachineID::init();
-			OpenSSL_add_all_algorithms();
-			OpenSSL_add_all_ciphers();
-			OpenSSL_add_all_digests();	
-			ERR_load_crypto_strings();
+            LLMachineID machineId;
+            machineId.init();
+            
 			gFirstName = "";
 			gLastName = "";
             mValidationDate[CERT_VALIDATION_DATE] = LLDate("2017-04-11T00:00:00.00Z");
@@ -716,6 +716,8 @@ namespace tut
 	template<> template<>
 	void sechandler_basic_test_object::test<3>()
 	{
+        LLMachineID machineId;
+        machineId.init();
 		std::string protected_data = "sUSh3wj77NG9oAMyt3XIhaej3KLZhLZWFZvI6rIGmwUUOmmelrRg0NI9rkOj8ZDpTPxpwToaBT5u"
 		"GQhakdaGLJznr9bHr4/6HIC1bouKj4n2rs4TL6j2WSjto114QdlNfLsE8cbbE+ghww58g8SeyLQO"
 		"nyzXoz+/PBz0HD5SMFDuObccoPW24gmqYySz8YoEWhSwO0pUtEEqOjVRsAJgF5wLAtJZDeuilGsq"
@@ -727,9 +729,9 @@ namespace tut
 
 		LLXORCipher cipher(gMACAddress, MAC_ADDRESS_BYTES);
 		cipher.decrypt(&binary_data[0], 16);
-		unsigned char unique_id[MAC_ADDRESS_BYTES];
-        LLMachineID::getUniqueID(unique_id, sizeof(unique_id));
-		LLXORCipher cipher2(unique_id, sizeof(unique_id));
+		U8 unique_id[32];
+        U32 id_len = machineId.getUniqueID(unique_id, sizeof(unique_id));
+		LLXORCipher cipher2(unique_id, sizeof(id_len));
 		cipher2.encrypt(&binary_data[0], 16);
 		std::ofstream temp_file("sechandler_settings.tmp", std::ofstream::binary);
 		temp_file.write((const char *)&binary_data[0], binary_data.size());
diff --git a/indra/test/llsdmessagebuilder_tut.cpp b/indra/test/llsdmessagebuilder_tut.cpp
index b7283f53a6bd3041e21378787e69da88a5bfa09b..d2a811904c1e76d424c6bf444925d8731ff15e54 100644
--- a/indra/test/llsdmessagebuilder_tut.cpp
+++ b/indra/test/llsdmessagebuilder_tut.cpp
@@ -35,7 +35,6 @@
 #include "llsdtraits.h"
 #include "llmath.h"
 #include "llquaternion.h"
-#include "u64.h"
 #include "v3dmath.h"
 #include "v3math.h"
 #include "v4math.h"
diff --git a/indra/test/lltemplatemessagebuilder_tut.cpp b/indra/test/lltemplatemessagebuilder_tut.cpp
index 7b4b6a8b70c969ee4e9ba30af9e25324e3c81b3e..288fc3ba8f242a7c0565f30cc25a3f171f373e9b 100644
--- a/indra/test/lltemplatemessagebuilder_tut.cpp
+++ b/indra/test/lltemplatemessagebuilder_tut.cpp
@@ -36,7 +36,6 @@
 #include "lltemplatemessagebuilder.h"
 #include "lltemplatemessagereader.h"
 #include "message_prehash.h"
-#include "u64.h"
 #include "v3dmath.h"
 #include "v3math.h"
 #include "v4math.h"