diff --git a/.gitignore b/.gitignore
index 41099b16..0344d749 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,11 +1,10 @@
 *.mak
 *.mak.vpc_crc
 *.vpc_crc
-*.a
 *.project
-lib/
 *obj_*
 build/
 .waf*
 .lock-waf*
 __pycache__
+*.pyc
diff --git a/README.md b/README.md
index 2b857614..580310e7 100644
--- a/README.md
+++ b/README.md
@@ -11,11 +11,19 @@ The main purpose of this repository is to port the engine for other platforms.
 * replace current buildsystem with waf
 * rewrite achivement system( to work without steam )
 # How to Build?
-On Linux:
 1. Clone repo ( ```git clone https://github.com/nillerusr/source-engine```)
 2. Run ```git submodule init && git submodule update```
-3. Build
+
+On Linux:
 ```
 ./waf configure -T debug
 ./waf build
 ```
+On Linux for Android(**Note: only Android NDK r10e is supported**):
+```
+export ANDROID_NDK=/path/to/ndk
+./waf configure -T debug --android=armeabi-v7a,4.9,21
+./waf build
+```
+On Windows:
+**TODO(WAF is not configured for Windows. Use VPC as temporary solution)**
diff --git a/appframework/sdlmgr.cpp b/appframework/sdlmgr.cpp
index 7234f4d1..7d6f4229 100644
--- a/appframework/sdlmgr.cpp
+++ b/appframework/sdlmgr.cpp
@@ -56,6 +56,11 @@ COpenGLEntryPoints *gGL = NULL;
 
 const int kBogusSwapInterval = INT_MAX;
 
+#ifdef ANDROID
+static void *gl4es = NULL;
+void *(*_glGetProcAddress)( const char * );
+#endif
+
 /*
 From Ryan Gordon:
  
@@ -174,7 +179,19 @@ void *VoidFnPtrLookup_GlMgr(const char *fn, bool &okay, const bool bRequired, vo
 		return NULL;
 
 	// The SDL path would work on all these platforms, if we were using SDL there, too...
-#if defined( USE_SDL )
+
+
+#ifdef ANDROID
+	// SDL does the right thing, so we never need to use tier0 in this case.
+	if( _glGetProcAddress )
+		retval = _glGetProcAddress(fn);
+	//printf("CDynamicFunctionOpenGL: SDL_GL_GetProcAddress(\"%s\") returned %p\n", fn, retval);
+	if ((retval == NULL) && (fallback != NULL))
+	{
+		//printf("CDynamicFunctionOpenGL: Using fallback %p for \"%s\"\n", fallback, fn);
+		retval = fallback;
+	}
+#elif defined( USE_SDL )
 	// SDL does the right thing, so we never need to use tier0 in this case.
 	retval = SDL_GL_GetProcAddress(fn);
 	//printf("CDynamicFunctionOpenGL: SDL_GL_GetProcAddress(\"%s\") returned %p\n", fn, retval);
@@ -196,7 +213,7 @@ void *VoidFnPtrLookup_GlMgr(const char *fn, bool &okay, const bool bRequired, vo
 		// We can't continue execution, because one or more GL function pointers will be NULL.
 		Error( "Could not find required OpenGL entry point '%s'! Either your video card is unsupported, or your OpenGL driver needs to be updated.\n", fn);
 	}
-	
+
 	return retval;
 }
 
@@ -742,6 +759,18 @@ bool CSDLMgr::CreateHiddenGameWindow( const char *pTitle, int width, int height
 
 	SDL_GL_MakeCurrent(m_Window, m_GLContext);
 
+#ifdef ANDROID
+	gl4es = dlopen("libgl4es.so", RTLD_LAZY);
+
+	if( gl4es )
+	{
+		_glGetProcAddress = dlsym(gl4es, "gl4es_GetProcAddress" );
+		void (*initialize_gl4es)( );
+		initialize_gl4es = dlsym(gl4es, "initialize_gl4es" );
+		initialize_gl4es();
+	}
+#endif
+
 	// !!! FIXME: note for later...we never delete this context anywhere, I think.
 	// !!! FIXME:  when we do get around to that, don't forget to delete/NULL gGL!
 
@@ -762,7 +791,7 @@ bool CSDLMgr::CreateHiddenGameWindow( const char *pTitle, int width, int height
 #endif // DBGFLAG_ASSERT
 
 	gGL = GetOpenGLEntryPoints(VoidFnPtrLookup_GlMgr);
-	
+
 	// It is now safe to call any base GL entry point that's supplied by gGL.
 	// You still need to explicitly test for extension entry points, though!
 
diff --git a/common/freetype/config/ftconfig.h b/common/freetype/config/ftconfig.h
index 8d4a074b..5e19c414 100644
--- a/common/freetype/config/ftconfig.h
+++ b/common/freetype/config/ftconfig.h
@@ -1,7 +1,11 @@
 #ifndef __FTCONFIG_H__MULTILIB
 #define __FTCONFIG_H__MULTILIB
 
+#ifdef ANDROID
+#include <sys/cdefs.h>
+#else
 #include <bits/wordsize.h>
+#endif
 
 #if __WORDSIZE == 32
 # include "ftconfig-32.h"
diff --git a/datacache/wscript b/datacache/wscript
index 81bd128f..3cb9a277 100755
--- a/datacache/wscript
+++ b/datacache/wscript
@@ -35,6 +35,9 @@ def build(bld):
 
 	libs = ['tier0','tier1','tier2','tier3']
 
+	if bld.env.DEST_OS == 'android':
+		libs += ['ANDROID_SUPPORT']
+
 	install_path = bld.env.LIBDIR
 
 	bld.shlib(
diff --git a/datamodel/dmattribute.cpp b/datamodel/dmattribute.cpp
index ba295924..3569b4dc 100644
--- a/datamodel/dmattribute.cpp
+++ b/datamodel/dmattribute.cpp
@@ -2898,7 +2898,7 @@ void CDmaDecorator<T,B>::Init( CDmElement *pOwner, const char *pAttributeName, i
 {
 	Assert( pOwner );
 	this->m_pAttribute = pOwner->AddExternalAttribute( pAttributeName, CDmAttributeInfo<CUtlVector<T> >::AttributeType(), &Value() );
-	Assert( m_pAttribute );
+	Assert( this->m_pAttribute );
 	if ( nFlags )
 	{
 		this->m_pAttribute->AddFlag( nFlags );
diff --git a/engine/wscript b/engine/wscript
index 0e48ae14..29a03ad8 100755
--- a/engine/wscript
+++ b/engine/wscript
@@ -323,12 +323,15 @@ def build(bld):
 		'../common',
 		'audio',
 		'audio/public',
-		'audio/private'
+		'audio/private',
 	]
 
 	defines = []
 
-	libs = ['tier0','vgui_controls','dmxloader','tier1','tier2','tier3','bitmap','vstdlib','appframework','datamodel','vtf','mathlib','steam_api','matsys_controls','BZ2','SDL2','JPEG','ZLIB','OPENAL','CURL']
+	libs = ['tier0','vgui_controls','dmxloader','tier1','tier2','tier3','bitmap','vstdlib','appframework','datamodel','vtf','mathlib','steam_api','matsys_controls','BZ2','SDL2','JPEG','ZLIB','OPENAL','CURL' ]
+
+	if bld.env.DEST_OS == 'android':
+		libs += ['SSL', 'CRYPTO'] # android curl was built with openssl
 
 	install_path = bld.env.LIBDIR
 
diff --git a/filesystem/basefilesystem.cpp b/filesystem/basefilesystem.cpp
index 4423cb4c..c33b9582 100644
--- a/filesystem/basefilesystem.cpp
+++ b/filesystem/basefilesystem.cpp
@@ -3770,8 +3770,10 @@ bool CBaseFileSystem::IsFileWritable( char const *pFileName, char const *pPathID
 		{
 #ifdef WIN32
 			if( buf.st_mode & _S_IWRITE )
-#elif LINUX
+#elif defined (LINUX) && !defined (ANDROID) 
 			if( buf.st_mode & S_IWRITE )
+#elif ANDROID
+			if( buf.st_mode & S_IWUSR )
 #else
 			if( buf.st_mode & S_IWRITE )
 #endif
@@ -3792,8 +3794,10 @@ bool CBaseFileSystem::IsFileWritable( char const *pFileName, char const *pPathID
 		{
 #ifdef WIN32
 			if ( buf.st_mode & _S_IWRITE )
-#elif LINUX
+#elif defined (LINUX) && !defined (ANDROID) 
 			if ( buf.st_mode & S_IWRITE )
+#elif ANDROID
+			if ( buf.st_mode & S_IWUSR )
 #else
 			if ( buf.st_mode & S_IWRITE )
 #endif
@@ -3812,6 +3816,8 @@ bool CBaseFileSystem::SetFileWritable( char const *pFileName, bool writable, con
 
 #ifdef _WIN32
 	int pmode = writable ? ( _S_IWRITE | _S_IREAD ) : ( _S_IREAD );
+#elif ANDROID
+	int pmode = writable ? ( S_IWUSR | S_IRUSR ) : ( S_IRUSR );
 #else
 	int pmode = writable ? ( S_IWRITE | S_IREAD ) : ( S_IREAD );
 #endif
@@ -5062,13 +5068,15 @@ CSysModule *CBaseFileSystem::LoadModule( const char *pFileName, const char *pPat
 
 
 #ifdef POSIX
-	Q_snprintf( tempPathID, sizeof(tempPathID), "lib%s", pFileName );
-	pModule = Sys_LoadModule( tempPathID );
 	if( !pModule )
-#endif
 	{
-		pModule = Sys_LoadModule( pFileName );
+		Q_snprintf( tempPathID, sizeof(tempPathID), "lib%s", pFileName );
+		pModule = Sys_LoadModule( tempPathID );
 	}
+#endif
+
+	if( !pModule )
+		pModule = Sys_LoadModule( pFileName );
 
 	return pModule;
 }
diff --git a/filesystem/filesystem_stdio.cpp b/filesystem/filesystem_stdio.cpp
index 43916fe3..3bb7c5b5 100644
--- a/filesystem/filesystem_stdio.cpp
+++ b/filesystem/filesystem_stdio.cpp
@@ -972,7 +972,11 @@ void CStdioFile::FS_fclose()
 		AUTO_LOCK( m_MutexLockedFD );
 
 		struct _stat buf;
+#ifdef ANDROID
+		int fd = fileno( m_pFile ); // need to test this
+#else
 		int fd = fileno_unlocked( m_pFile );
+#endif
 		fstat( fd, &buf );
 
 		fflush( m_pFile );
diff --git a/filesystem/packfile.cpp b/filesystem/packfile.cpp
index 5190959a..f18fa0e7 100644
--- a/filesystem/packfile.cpp
+++ b/filesystem/packfile.cpp
@@ -879,10 +879,10 @@ int64 CZipPackFileHandle::AbsoluteBaseOffset()
 	return m_pOwner->GetPackFileBaseOffset() + m_nBase;
 }
 
-#if defined( _DEBUG ) && !defined( OSX )
+#if defined( _DEBUG ) && !defined( OSX ) && !defined( ANDROID )
 #include <atomic>
 static std::atomic<int> sLZMAPackFileHandles( 0 );
-#endif // defined( _DEBUG ) && !defined( OSX )
+#endif // defined( _DEBUG ) && !defined( OSX ) && !defined( ANDROID )
 
 CLZMAZipPackFileHandle::CLZMAZipPackFileHandle( CZipPackFile* pOwner, int64 nBase, unsigned int nOriginalSize, unsigned int nCompressedSize,
                                                 unsigned int nIndex, unsigned int nFilePointer )
@@ -892,7 +892,7 @@ CLZMAZipPackFileHandle::CLZMAZipPackFileHandle( CZipPackFile* pOwner, int64 nBas
 	  m_pLZMAStream( NULL ), m_nSeekPosition( 0 ), m_nOriginalSize( nOriginalSize )
 {
 	Reset();
-#if defined( _DEBUG ) && !defined( OSX )
+#if defined( _DEBUG ) && !defined( OSX ) && !defined( ANDROID )
 	if ( ++sLZMAPackFileHandles == PACKFILE_COMPRESSED_FILE_HANDLES_WARNING )
 	{
 		// By my count a live filehandle is currently around 270k, mostly due to the LZMA dictionary (256k) with the
@@ -901,17 +901,17 @@ CLZMAZipPackFileHandle::CLZMAZipPackFileHandle( CZipPackFile* pOwner, int64 nBas
 		         "These carry large buffers around, and can cause high memory usage\n",
 		         PACKFILE_COMPRESSED_FILE_HANDLES_WARNING );
 	}
-#endif // defined( _DEBUG ) && !defined( OSX )
+#endif // defined( _DEBUG ) && !defined( OSX ) && !defined( ANDROID )
 }
 
 CLZMAZipPackFileHandle::~CLZMAZipPackFileHandle()
 {
 	delete m_pLZMAStream;
 	m_pLZMAStream = NULL;
-#if defined( _DEBUG ) && !defined( OSX )
+#if defined( _DEBUG ) && !defined( OSX ) && !defined( ANDROID )
 	sLZMAPackFileHandles--;
 	Assert( sLZMAPackFileHandles >= 0 );
-#endif // defined( _DEBUG ) && !defined( OSX )
+#endif // defined( _DEBUG ) && !defined( OSX ) && !defined( ANDROID )
 }
 
 int CLZMAZipPackFileHandle::Read( void* pBuffer, int nDestSize, int nBytes )
diff --git a/game/client/mumble.cpp b/game/client/mumble.cpp
index 8e58bc22..73c03647 100644
--- a/game/client/mumble.cpp
+++ b/game/client/mumble.cpp
@@ -98,6 +98,8 @@ void CMumbleSystem::LevelInitPostEntity()
 		g_hMapObject = NULL;
 		return;
 	}
+#elif defined( ANDROID )
+	return; // TODO(JusicP): implement
 #elif defined( POSIX )
 	char memname[256];
 	V_sprintf_safe( memname, "/MumbleLink.%d", getuid() );
diff --git a/game/client/wscript b/game/client/wscript
index b4f81d2f..db939982 100755
--- a/game/client/wscript
+++ b/game/client/wscript
@@ -559,7 +559,9 @@ def build(bld):
 		'RT'
 	]
 
-	install_path = bld.env.PREFIX+'/hl2/bin'
+	install_path = bld.env.PREFIX
+	if bld.env.DEST_OS != 'android':
+		install_path += '/hl2/bin'
 
 	bld.shlib(
 		source   = source,
diff --git a/game/server/wscript b/game/server/wscript
index f22a0a42..ff4e2b09 100755
--- a/game/server/wscript
+++ b/game/server/wscript
@@ -602,7 +602,9 @@ def build(bld):
 
 	libs = ['tier0','particles','dmxloader','tier1','tier2','tier3','mathlib','vstdlib','choreoobjects','steam_api']
 
-	install_path = bld.env.PREFIX+'/hl2/bin'
+	install_path = bld.env.PREFIX
+	if bld.env.DEST_OS != 'android':
+		install_path += '/hl2/bin'
 
 	bld.shlib(
 		source   = source,
diff --git a/gameui/wscript b/gameui/wscript
index d508bbd9..76473ce2 100755
--- a/gameui/wscript
+++ b/gameui/wscript
@@ -107,7 +107,7 @@ def build(bld):
 
 	defines = []
 
-	libs = ['tier0','vgui_controls','tier1','tier2','tier3','vstdlib','vtf','bitmap','mathlib','SDL2','steam_api','matsys_controls','JPEG','PNG']
+	libs = ['tier0','vgui_controls','tier1','tier2','tier3','vstdlib','vtf','bitmap','mathlib','SDL2','steam_api','matsys_controls','JPEG','PNG','ZLIB']
 
 	install_path = bld.env.LIBDIR
 
diff --git a/launcher/android.cpp b/launcher/android.cpp
new file mode 100644
index 00000000..a9b38527
--- /dev/null
+++ b/launcher/android.cpp
@@ -0,0 +1,145 @@
+#ifdef ANDROID
+
+#include <android/log.h>
+#include <jni.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <dlfcn.h>
+
+
+#include "tier0/threadtools.h"
+
+char *LauncherArgv[512];
+char java_args[4096];
+int iLastArgs = 0;
+
+#define TAG "SRCENG"
+#define PRIO ANDROID_LOG_DEBUG
+#define LogPrintf(...) do { __android_log_print(PRIO, TAG, __VA_ARGS__); printf( __VA_ARGS__); } while( 0 );
+#define DLLEXPORT extern "C" __attribute__((visibility("default")))
+
+DLLEXPORT void Java_com_valvesoftware_ValveActivity2_setDataDirectoryPath(JNIEnv *env, jclass *clazz, jstring path)
+{
+	setenv( "APP_DATA_PATH", env->GetStringUTFChars(path, NULL), 1);
+	LogPrintf( "Java_com_valvesoftware_ValveActivity2_setDataDirectoryPath: %s", getenv("APP_DATA_PATH") );
+}
+
+DLLEXPORT void Java_com_valvesoftware_ValveActivity2_setGameDirectoryPath(JNIEnv *env, jclass *clazz, jstring path)
+{
+	LogPrintf( "Java_com_valvesoftware_ValveActivity2_setGameDirectoryPath" );
+	setenv( "VALVE_GAME_PATH", env->GetStringUTFChars(path, NULL), 1 );
+}
+
+DLLEXPORT int Java_com_valvesoftware_ValveActivity2_setenv(JNIEnv *jenv, jclass *jclass, jstring env, jstring value, jint over)
+{
+	LogPrintf( "Java_com_valvesoftware_ValveActivity2_setenv %s=%s", jenv->GetStringUTFChars(env, NULL), jenv->GetStringUTFChars(value, NULL) );
+	return setenv( jenv->GetStringUTFChars(env, NULL), jenv->GetStringUTFChars(value, NULL), over );
+}
+
+DLLEXPORT void Java_com_valvesoftware_ValveActivity2_nativeOnActivityResult()
+{
+	LogPrintf( "Java_com_valvesoftware_ValveActivity_nativeOnActivityResult" );
+}
+
+void parseArgs( char *args )
+{
+	char *pch;
+	pch = strtok (args," ");
+	while (pch != NULL)
+	{
+		LauncherArgv[iLastArgs++] = pch;
+		pch = strtok (NULL, " ");
+	}
+}
+
+DLLEXPORT void Java_com_valvesoftware_ValveActivity2_setArgs(JNIEnv *env, jclass *clazz, jstring str)
+{
+	strncpy( java_args, env->GetStringUTFChars(str, NULL), sizeof java_args );
+}
+
+DLLEXPORT int LauncherMain( int argc, char **argv );
+
+#define A(a,b) LauncherArgv[iLastArgs++] = (char*)a; \
+	LauncherArgv[iLastArgs++] = (char*)b
+
+#define D(a) LauncherArgv[iLastArgs++] = (char*)a
+
+void SetLauncherArgs()
+{
+	static char binPath[2048];
+	snprintf(binPath, sizeof binPath, "%s/hl2_linux", getenv("APP_DATA_PATH") );
+	LogPrintf(binPath);
+	D(binPath);
+
+	parseArgs(java_args);
+
+	A("-game", "hl2");
+	D("-window");
+	D("-nosteam");
+	D("-insecure");
+}
+
+static void *lgles;
+
+typedef void (*t_set_getprocaddress)(void *(*new_proc_address)(const char *));
+t_set_getprocaddress gl4es_set_getprocaddress;
+
+typedef void *(*t_eglGetProcAddress)( const char * );
+t_eglGetProcAddress eglGetProcAddress;
+
+void *GetProcAddress( const char *procname )
+{
+	void *result = dlsym(lgles, procname);
+	if(result)
+		return result;
+	else
+		return eglGetProcAddress(procname);
+}
+
+DLLEXPORT int LauncherMainAndroid( int argc, char **argv )
+{
+
+	SetLauncherArgs();
+
+	void *lgl4es = dlopen("libgl4es.so", 0);
+	if( !lgl4es )
+	{
+		LogPrintf("Failed to dlopen library libgl4es.so: %s\n", dlerror());
+		return 1;
+	}
+
+	void *lEGL = dlopen("libEGL.so", 0);
+	if( !lEGL )
+	{
+		LogPrintf("Failed to dlopen library libEGL.so: %s\n", dlerror());
+		return 1;
+	}
+
+	lgles = dlopen("libGLESv2.so", 0);
+	if( !lgles )
+	{
+		LogPrintf("Failed to dlopen library libGLESv2.so: %s\n", dlerror());
+		return 1;
+	}
+
+	gl4es_set_getprocaddress = (t_set_getprocaddress)dlsym(lgl4es, "set_getprocaddress");
+	eglGetProcAddress = (t_eglGetProcAddress)dlsym(lEGL, "eglGetProcAddress");
+
+	if( gl4es_set_getprocaddress && eglGetProcAddress )
+	{
+		gl4es_set_getprocaddress( &GetProcAddress );
+	}
+	else
+	{
+		LogPrintf("Failed to call set_getprocaddress\n");
+		return 1;
+	}
+
+	DeclareCurrentThreadIsMainThread(); // Init thread propertly on Android
+
+	return LauncherMain(iLastArgs, LauncherArgv);
+}
+
+#endif
diff --git a/launcher/launcher.cpp b/launcher/launcher.cpp
index d34ae113..5ba0ab18 100644
--- a/launcher/launcher.cpp
+++ b/launcher/launcher.cpp
@@ -82,6 +82,11 @@ int MessageBox( HWND hWnd, const char *message, const char *header, unsigned uTy
 #define RELAUNCH_FILE "/tmp/hl2_relaunch"
 #endif
 
+#if defined ( ANDROID )
+#include <android/log.h>
+#include "jni.h"
+#endif
+
 // memdbgon must be the last include file in a .cpp file!!!
 #include "tier0/memdbgon.h"
 
@@ -248,7 +253,11 @@ bool GetExecutableName( char *out, int outSize )
 //-----------------------------------------------------------------------------
 char *GetBaseDirectory( void )
 {
+#ifdef ANDROID
+	return getenv("VALVE_GAME_PATH");
+#else
 	return g_szBasedir;
+#endif
 }
 
 //-----------------------------------------------------------------------------
@@ -680,8 +689,7 @@ bool CSourceAppSystemGroup::Create()
 
 	if ( !AddSystems( appSystems ) ) 
 		return false;
-
-
+	
 	// This will be NULL for games that don't support VR. That's ok. Just don't load the DLL
 	AppModule_t sourceVRModule = LoadModule( "sourcevr" DLL_EXT_STRING );
 	if( sourceVRModule != APP_MODULE_INVALID )
@@ -934,7 +942,9 @@ bool GrabSourceMutex()
 	CRC32_ProcessBuffer( &gameCRC, (void *)pchGameParam, Q_strlen( pchGameParam ) );
 	CRC32_Final( &gameCRC );
 
-#ifdef LINUX
+#ifdef ANDROID
+	return true;
+#elif defined (LINUX)
 	/*
 	 * Linux
  	 */
@@ -1175,7 +1185,7 @@ static const char *BuildCommand()
 // Output : int APIENTRY
 //-----------------------------------------------------------------------------
 #ifdef WIN32
-extern "C" __declspec(dllexport) int LauncherMain( HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow )
+extern "C" __declspec(DLL_EXPORT) int LauncherMain( HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow )
 #else
 DLL_EXPORT int LauncherMain( int argc, char **argv )
 #endif
@@ -1229,7 +1239,7 @@ DLL_EXPORT int LauncherMain( int argc, char **argv )
 	{
 		return -1;
 	}
-
+	
 	const char *filename;
 #ifdef WIN32
 	CommandLine()->CreateCmdLine( IsPC() ? VCRHook_GetCommandLine() : lpCmdLine );
@@ -1448,6 +1458,7 @@ DLL_EXPORT int LauncherMain( int argc, char **argv )
 
 	// Figure out the directory the executable is running from
 	// and make that be the current working directory
+
 	_chdir( GetBaseDirectory() );
 
 	g_LeakDump.m_bCheckLeaks = CommandLine()->CheckParm( "-leakcheck" ) ? true : false;
diff --git a/launcher/wscript b/launcher/wscript
index 7af6dd6b..5beb4f91 100755
--- a/launcher/wscript
+++ b/launcher/wscript
@@ -19,6 +19,7 @@ def build(bld):
 		'../public/filesystem_init.cpp',
 		'launcher.cpp',
 		'reslistgenerator.cpp',
+		'android.cpp'
 	]
 
 	includes = [
diff --git a/launcher_main/main.cpp b/launcher_main/main.cpp
index 1fca6b10..90aafcc3 100644
--- a/launcher_main/main.cpp
+++ b/launcher_main/main.cpp
@@ -146,6 +146,7 @@ int APIENTRY WinMain( HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdL
 #if defined( LINUX )
 
 #include <fcntl.h>
+#include <sys/stat.h>
 
 static bool IsDebuggerPresent( int time )
 {
diff --git a/launcher_main/wscript b/launcher_main/wscript
index 622952bc..11f105b0 100755
--- a/launcher_main/wscript
+++ b/launcher_main/wscript
@@ -15,6 +15,8 @@ def configure(conf):
 	return
 
 def build(bld):
+	if bld.env.DEST_OS == 'android':
+		return
 
 	source = ['main.cpp']
 	includes = ['../public']
@@ -22,7 +24,7 @@ def build(bld):
 	libs = []
 
 	if bld.env.DEST_OS != 'win32':
-		libs += [ 'DL' ]
+		libs += [ 'DL', 'LOG' ]
 	else:
 		libs += ['USER32', 'SHELL32']
 		source += ['launcher_main.rc']
diff --git a/lib/android/armeabi-v7a/libSDL2.so b/lib/android/armeabi-v7a/libSDL2.so
new file mode 100755
index 00000000..fccfb169
Binary files /dev/null and b/lib/android/armeabi-v7a/libSDL2.so differ
diff --git a/lib/android/armeabi-v7a/libandroid_support.a b/lib/android/armeabi-v7a/libandroid_support.a
new file mode 100644
index 00000000..30a81d72
Binary files /dev/null and b/lib/android/armeabi-v7a/libandroid_support.a differ
diff --git a/lib/android/armeabi-v7a/libbz2.a b/lib/android/armeabi-v7a/libbz2.a
new file mode 100755
index 00000000..effd9de5
Binary files /dev/null and b/lib/android/armeabi-v7a/libbz2.a differ
diff --git a/lib/android/armeabi-v7a/libcrypto.a b/lib/android/armeabi-v7a/libcrypto.a
new file mode 100755
index 00000000..ccd1a094
Binary files /dev/null and b/lib/android/armeabi-v7a/libcrypto.a differ
diff --git a/lib/android/armeabi-v7a/libcurl.a b/lib/android/armeabi-v7a/libcurl.a
new file mode 100755
index 00000000..7ac63950
Binary files /dev/null and b/lib/android/armeabi-v7a/libcurl.a differ
diff --git a/lib/android/armeabi-v7a/libexpat.a b/lib/android/armeabi-v7a/libexpat.a
new file mode 100755
index 00000000..f2a28a73
Binary files /dev/null and b/lib/android/armeabi-v7a/libexpat.a differ
diff --git a/lib/android/armeabi-v7a/libfreetype2.a b/lib/android/armeabi-v7a/libfreetype2.a
new file mode 100755
index 00000000..e27727e8
Binary files /dev/null and b/lib/android/armeabi-v7a/libfreetype2.a differ
diff --git a/lib/android/armeabi-v7a/libjpeg.a b/lib/android/armeabi-v7a/libjpeg.a
new file mode 100755
index 00000000..95f1be07
Binary files /dev/null and b/lib/android/armeabi-v7a/libjpeg.a differ
diff --git a/lib/android/armeabi-v7a/libopenal.a b/lib/android/armeabi-v7a/libopenal.a
new file mode 100755
index 00000000..7ab7cd9f
Binary files /dev/null and b/lib/android/armeabi-v7a/libopenal.a differ
diff --git a/lib/android/armeabi-v7a/libpng.a b/lib/android/armeabi-v7a/libpng.a
new file mode 100755
index 00000000..f2f75054
Binary files /dev/null and b/lib/android/armeabi-v7a/libpng.a differ
diff --git a/lib/android/armeabi-v7a/libssl.a b/lib/android/armeabi-v7a/libssl.a
new file mode 100755
index 00000000..47f090bb
Binary files /dev/null and b/lib/android/armeabi-v7a/libssl.a differ
diff --git a/lib/android/x86/libandroid_support.a b/lib/android/x86/libandroid_support.a
new file mode 100644
index 00000000..5d405f85
Binary files /dev/null and b/lib/android/x86/libandroid_support.a differ
diff --git a/materialsystem/shaderapidx9/wscript b/materialsystem/shaderapidx9/wscript
index 168d8539..d1126bb9 100755
--- a/materialsystem/shaderapidx9/wscript
+++ b/materialsystem/shaderapidx9/wscript
@@ -15,7 +15,7 @@ def configure(conf):
 	conf.env.append_unique('DEFINES',[
 		'SHADERAPIDX9',
 		'SHADER_DLL_EXPORT',
-		'PROTECTED_THINGS_ENABLE',
+		#'PROTECTED_THINGS_ENABLE', # conflicts with stlport
 		'strncpy=use_Q_strncpy_instead',
 		'_snprintf=use_Q_snprintf_instead',
 		'GL_GLEXT_PROTOTYPES',
@@ -58,6 +58,9 @@ def build(bld):
 
 	libs = ['tier0','tier1','tier2','vstdlib','togl','bitmap','mathlib']
 
+	if bld.env.DEST_OS == 'android':
+		libs += ['ANDROID_SUPPORT']
+
 	install_path = bld.env.LIBDIR
 
 	bld.shlib(
diff --git a/materialsystem/stdshaders/wscript b/materialsystem/stdshaders/wscript
index c4a82640..66ec1c06 100644
--- a/materialsystem/stdshaders/wscript
+++ b/materialsystem/stdshaders/wscript
@@ -150,6 +150,9 @@ def build(bld):
 
 	libs = ['tier0','shaderlib','tier1','mathlib']
 
+	if bld.env.DEST_OS == 'android':
+		libs += ['ANDROID_SUPPORT']
+
 	install_path = bld.env.LIBDIR
 
 	bld.shlib(
diff --git a/materialsystem/wscript b/materialsystem/wscript
index 4bb7d2f8..a99fb804 100755
--- a/materialsystem/wscript
+++ b/materialsystem/wscript
@@ -15,7 +15,7 @@ def configure(conf):
 	conf.env.append_unique('DEFINES',[
 		'DEFINE_MATERIALSYSTEM_INTERFACE',
 		'MATERIALSYSTEM_EXPORTS',
-		'PROTECTED_THINGS_ENABLE',
+		#'PROTECTED_THINGS_ENABLE', # conflicts with stlport
 		'strncpy=use_Q_strncpy_instead',
 		'_snprintf=use_Q_snprintf_instead'
 	])
diff --git a/public/filesystem_init.cpp b/public/filesystem_init.cpp
index d6126578..2b2c2ee6 100644
--- a/public/filesystem_init.cpp
+++ b/public/filesystem_init.cpp
@@ -341,29 +341,40 @@ bool FileSystem_GetExecutableDir( char *exedir, int exeDirLen )
 
 	Q_FixSlashes( exedir );
 
+#ifdef ANDROID
+	const char* libDir = "lib";
+#else
+	const char* libDir = "bin";
+#endif
+
 	// Return the bin directory as the executable dir if it's not in there
 	// because that's really where we're running from...
 	char ext[MAX_PATH];
 	Q_StrRight( exedir, 4, ext, sizeof( ext ) );
-	if ( ext[0] != CORRECT_PATH_SEPARATOR || Q_stricmp( ext+1, "bin" ) != 0 )
+	if ( ext[0] != CORRECT_PATH_SEPARATOR || Q_stricmp( ext+1, libDir ) != 0 )
 	{
 		Q_strncat( exedir, CORRECT_PATH_SEPARATOR_S, exeDirLen, COPY_ALL_CHARACTERS );
-		Q_strncat( exedir, "bin", exeDirLen, COPY_ALL_CHARACTERS );
+		Q_strncat( exedir, libDir, exeDirLen, COPY_ALL_CHARACTERS );
 		Q_FixSlashes( exedir );
 	}
-	
+
 	return true;
 }
 
 static bool FileSystem_GetBaseDir( char *baseDir, int baseDirLen )
 {
+#ifdef ANDROID
+	strncpy(baseDir, getenv("VALVE_GAME_PATH"), baseDirLen);
+	return true;
+#else
 	if ( FileSystem_GetExecutableDir( baseDir, baseDirLen ) )
 	{
 		Q_StripFilename( baseDir );
 		return true;
 	}
-	
+
 	return false;
+#endif
 }
 
 void LaunchVConfig()
@@ -543,6 +554,8 @@ FSReturnCode_t FileSystem_LoadSearchPaths( CFSSearchPathsInit &initInfo )
 	if ( !FileSystem_GetBaseDir( baseDir, sizeof( baseDir ) ) )
 		return SetupFileSystemError( false, FS_INVALID_PARAMETERS, "FileSystem_GetBaseDir failed." );
 
+	Msg("filesystem BaseDir: %s\n", baseDir);
+
 	// The MOD directory is always the one that contains gameinfo.txt
 	Q_strncpy( initInfo.m_ModPath, initInfo.m_pDirectoryName, sizeof( initInfo.m_ModPath ) );
 
diff --git a/public/tier0/memdbgon.h b/public/tier0/memdbgon.h
index 9f022a09..3998b223 100644
--- a/public/tier0/memdbgon.h
+++ b/public/tier0/memdbgon.h
@@ -39,7 +39,9 @@
 		#define _NORMAL_BLOCK 1
 		
 		#include <cstddef>
+		#ifndef ANDROID
 		#include <glob.h>
+		#endif
 		#include <new>
 		#include <sys/types.h>
 		#if !defined( DID_THE_OPERATOR_NEW )
diff --git a/public/tier0/memoverride.cpp b/public/tier0/memoverride.cpp
index 925f9d2a..57d3f4cb 100644
--- a/public/tier0/memoverride.cpp
+++ b/public/tier0/memoverride.cpp
@@ -390,7 +390,7 @@ extern "C"
 // ensures they are here even when linking against debug or release static libs
 //-----------------------------------------------------------------------------
 #ifndef NO_MEMOVERRIDE_NEW_DELETE
-#ifdef OSX
+#if defined (OSX) || defined (ANDROID)
 void *__cdecl operator new( size_t nSize ) throw (std::bad_alloc)
 #else
 void *__cdecl operator new( size_t nSize )
@@ -404,7 +404,7 @@ void *__cdecl operator new( size_t nSize, int nBlockUse, const char *pFileName,
 	return g_pMemAlloc->Alloc(nSize, pFileName, nLine);
 }
 
-#ifdef OSX
+#if defined (OSX) || defined (ANDROID)
 void __cdecl operator delete( void *pMem ) throw()
 #else
 void __cdecl operator delete( void *pMem )
@@ -412,8 +412,7 @@ void __cdecl operator delete( void *pMem )
 {
 	g_pMemAlloc->Free( pMem );
 }
-
-#ifdef OSX
+#if defined (OSX) || defined (ANDROID)
 void operator delete(void*pMem, std::size_t)
 #else
 void operator delete(void*pMem, std::size_t) throw()
@@ -422,7 +421,7 @@ void operator delete(void*pMem, std::size_t) throw()
 	g_pMemAlloc->Free( pMem );
 }
 
-#ifdef OSX
+#if defined (OSX) || defined (ANDROID)
 void *__cdecl operator new[]( size_t nSize ) throw (std::bad_alloc)
 #else
 void *__cdecl operator new[]( size_t nSize )
@@ -436,7 +435,7 @@ void *__cdecl operator new[] ( size_t nSize, int nBlockUse, const char *pFileNam
 	return g_pMemAlloc->Alloc(nSize, pFileName, nLine);
 }
 
-#ifdef OSX
+#if defined (OSX) || defined (ANDROID)
 void __cdecl operator delete[]( void *pMem ) throw()
 #else
 void __cdecl operator delete[]( void *pMem )
diff --git a/public/tier1/utlvector.h b/public/tier1/utlvector.h
index 6fffc6a2..7fa9687e 100644
--- a/public/tier1/utlvector.h
+++ b/public/tier1/utlvector.h
@@ -182,6 +182,7 @@ public:
 
 	// Purges the list and calls delete on each element in it.
 	void PurgeAndDeleteElements();
+	void PurgeAndDeleteElementsArray();
 
 	// Compacts the vector to the number of elements actually in use 
 	void Compact();
@@ -475,6 +476,18 @@ public:
 		}
 	}
 
+	void PurgeAndDeleteElementsArray()
+	{
+		if ( m_pData != StaticData() )
+		{
+			for( int i=0; i < m_pData->m_Size; i++ )
+			{
+				delete[] Element(i);
+			}
+			RemoveAll();
+		}
+	}
+
 	void FastRemove( int elem )
 	{
 		Assert( IsValidIndex(elem) );
@@ -1413,6 +1426,17 @@ inline void CUtlVector<T, A>::PurgeAndDeleteElements()
 	Purge();
 }
 
+template< typename T, class A >
+inline void CUtlVector<T, A>::PurgeAndDeleteElementsArray()
+{
+	for( int i=0; i < m_Size; i++ )
+	{
+		delete[] Element(i);
+	}
+	RemoveAll();
+}
+
+
 template< typename T, class A >
 inline void CUtlVector<T, A>::Compact()
 {
@@ -1441,23 +1465,16 @@ void CUtlVector<T, A>::Validate( CValidator &validator, char *pchName )
 }
 #endif // DBGFLAG_VALIDATE
 
-// A vector class for storing pointers, so that the elements pointed to by the pointers are deleted
-// on exit.
-template<class T> class CUtlVectorAutoPurge : public CUtlVector< T, CUtlMemory< T, int> >
+// easy string list class with dynamically allocated strings. For use with V_SplitString, etc.
+// Frees the dynamic strings in destructor.
+class CUtlStringList : public CUtlVector< char*, CUtlMemory< char*, int > >
 {
 public:
-	~CUtlVectorAutoPurge( void )
+	~CUtlStringList( void )
 	{
-		this->PurgeAndDeleteElements();
+		PurgeAndDeleteElementsArray();
 	}
 
-};
-
-// easy string list class with dynamically allocated strings. For use with V_SplitString, etc.
-// Frees the dynamic strings in destructor.
-class CUtlStringList : public CUtlVectorAutoPurge< char *>
-{
-public:
 	void CopyAndAddToTail( char const *pString )			// clone the string and add to the end
 	{
 		char *pNewStr = new char[1 + strlen( pString )];
diff --git a/scenefilecache/wscript b/scenefilecache/wscript
index a63db9a9..828c06d9 100755
--- a/scenefilecache/wscript
+++ b/scenefilecache/wscript
@@ -13,7 +13,7 @@ def options(opt):
 
 def configure(conf):
 	conf.define('_WINDOWS',1) # WTF? this defined in original vpc file
-	conf.define('PROTECTED_THINGS_ENABLE',1)
+	#conf.define('PROTECTED_THINGS_ENABLE',1) # conflicts with stlport
 
 def build(bld):
 	source = [
@@ -32,6 +32,9 @@ def build(bld):
 
 	libs = ['tier0','tier1']
 
+	if bld.env.DEST_OS == 'android':
+		libs += ['ANDROID_SUPPORT']
+
 	install_path = bld.env.LIBDIR
 
 	bld.shlib(
diff --git a/scripts/waifulib/xcompile.py b/scripts/waifulib/xcompile.py
index a7818911..fc5ab628 100644
--- a/scripts/waifulib/xcompile.py
+++ b/scripts/waifulib/xcompile.py
@@ -213,7 +213,11 @@ class Android:
 
 	def system_stl(self):
 		# TODO: proper STL support
-		return os.path.abspath(os.path.join(self.ndk_home, 'sources', 'cxx-stl', 'system', 'include'))
+		return [
+			#os.path.abspath(os.path.join(self.ndk_home, 'sources', 'cxx-stl', 'system', 'include')),
+			os.path.abspath(os.path.join(self.ndk_home, 'sources', 'cxx-stl', 'stlport', 'stlport')),
+			os.path.abspath(os.path.join(self.ndk_home, 'sources', 'android', 'support', 'include'))
+		]
 
 	def libsysroot(self):
 		arch = self.arch
@@ -243,7 +247,7 @@ class Android:
 					'-isystem', '%s/usr/include/' % (self.sysroot())
 				]
 
-		cflags += ['-I%s' % (self.system_stl()), '-DANDROID', '-D__ANDROID__']
+		cflags += ['-I%s'%i for i in self.system_stl()]+['-DANDROID', '-D__ANDROID__']
 
 		if cxx and not self.is_clang() and self.toolchain not in ['4.8','4.9']:
 			cflags += ['-fno-sized-deallocation']
@@ -335,13 +339,15 @@ def configure(conf):
 		conf.env.CXXFLAGS += android.cflags(True)
 		conf.env.LINKFLAGS += android.linkflags()
 		conf.env.LDFLAGS += android.ldflags()
+		conf.env.STLIBPATH += [os.path.abspath(os.path.join(android.ndk_home, 'sources','cxx-stl','stlport','libs',values[0]))]
+		conf.env.LDFLAGS += ['-lstlport_static']
 
 		conf.env.HAVE_M = True
 		if android.is_hardfp():
 			conf.env.LIB_M = ['m_hard']
 		else: conf.env.LIB_M = ['m']
 
-		conf.env.PREFIX = '/lib/%s' % android.apk_arch()
+		conf.env.PREFIX += '/lib/%s' % android.apk_arch()
 
 		conf.msg('Selected Android NDK', '%s, version: %d' % (android.ndk_home, android.ndk_rev))
 		# no need to print C/C++ compiler, as it would be printed by compiler_c/cxx
diff --git a/soundemittersystem/wscript b/soundemittersystem/wscript
index 36e1e413..3da4b83a 100755
--- a/soundemittersystem/wscript
+++ b/soundemittersystem/wscript
@@ -14,7 +14,7 @@ def options(opt):
 def configure(conf):
 	conf.define('SOUNDEMITTERSYSTEM_EXPORTS',1)
 	conf.define('_WINDOWS',1)
-	conf.define('PROTECTED_THINGS_ENABLE',1)
+	#conf.define('PROTECTED_THINGS_ENABLE',1) # conflicts with stlport
 	#conf.define('fopen','dont_use_fopen') # WINDOWS
 
 def build(bld):
diff --git a/studiorender/wscript b/studiorender/wscript
index 9d55719e..2e6d7b5c 100755
--- a/studiorender/wscript
+++ b/studiorender/wscript
@@ -14,7 +14,7 @@ def options(opt):
 def configure(conf):
 	conf.env.append_unique('DEFINES',[
 		'STUDIORENDER_EXPORTS',
-		'PROTECTED_THINGS_ENABLE'
+		#'PROTECTED_THINGS_ENABLE' # conflicts with stlport
 	])
 
 def build(bld):
diff --git a/thirdparty b/thirdparty
index ecce0cec..c397ca05 160000
--- a/thirdparty
+++ b/thirdparty
@@ -1 +1 @@
-Subproject commit ecce0cecc39b32bdf704542e3cb870ba4e2e8e42
+Subproject commit c397ca0520de10f8bf9c85fadc9fcc3055c60b0f
diff --git a/tier0/dbg.cpp b/tier0/dbg.cpp
index ce01801f..931ea21f 100644
--- a/tier0/dbg.cpp
+++ b/tier0/dbg.cpp
@@ -31,6 +31,10 @@
 #include "xbox/xbox_console.h"
 #endif
 
+#ifdef ANDROID
+#include <android/log.h>
+#endif
+
 #include "tier0/etwprof.h"
 
 #ifndef STEAM
@@ -309,6 +313,10 @@ static SpewRetval_t _SpewMessage( SpewType_t spewType, const char *pGroupName, i
 		nLevel
 	};
 
+#ifdef ANDROID
+    __android_log_print( ANDROID_LOG_INFO, "SRCENG", "%s", pTempBuffer );
+#endif
+
 	g_pSpewInfo = &spewInfo;
 	ret = s_SpewOutputFunc( spewType, pTempBuffer );
 	g_pSpewInfo = (int)NULL;
diff --git a/tier0/platform_posix.cpp b/tier0/platform_posix.cpp
index ba2783a5..9a12bc3b 100644
--- a/tier0/platform_posix.cpp
+++ b/tier0/platform_posix.cpp
@@ -28,6 +28,9 @@
 #include <time.h>
 #include <fcntl.h>
 #endif
+#ifdef ANDROID
+#include <linux/stat.h>
+#endif
 
 #include "tier0/memdbgon.h"
 // Benchmark mode uses this heavy-handed method 
diff --git a/tier0/threadtools.cpp b/tier0/threadtools.cpp
index caafef6c..99da9d66 100644
--- a/tier0/threadtools.cpp
+++ b/tier0/threadtools.cpp
@@ -23,8 +23,13 @@
 #elif defined(POSIX)
 
 #if !defined(OSX)
+#if defined(ANDROID)
+	#include <fcntl.h>
+	#include <unistd.h>
+#else
 	#include <sys/fcntl.h>
 	#include <sys/unistd.h>
+#endif
 	#define sem_unlink( arg )
 	#define OS_TO_PTHREAD(x) (x)
 #else
diff --git a/tier0/wscript b/tier0/wscript
index 9f6e39bb..0e9faed4 100755
--- a/tier0/wscript
+++ b/tier0/wscript
@@ -54,7 +54,7 @@ def build(bld):
 		'vcrmode_posix.cpp',	#[$POSIX]
 		'vprof.cpp',
 		# 'win32consoleio.cpp',	[$WINDOWS]
-		'../tier1/pathmatch.cpp' # [$LINUXALL]
+		#'../tier1/pathmatch.cpp' # [$LINUXALL]
 	]
 
 	includes = [
@@ -65,7 +65,7 @@ def build(bld):
 
 	defines = []
 
-	libs = ['DL']
+	libs = ['DL', 'M', 'LOG']
 
 	install_path = bld.env.LIBDIR
 
diff --git a/tier1/interface.cpp b/tier1/interface.cpp
index 3c91cc30..96dd90c9 100644
--- a/tier1/interface.cpp
+++ b/tier1/interface.cpp
@@ -247,8 +247,10 @@ HMODULE Sys_LoadLibrary( const char *pLibraryName, Sys_Flags flags )
 #elif POSIX
 	int dlopen_mode = RTLD_NOW;
 
+#ifndef ANDROID
 	if ( flags & SYS_NOLOAD )
 		dlopen_mode |= RTLD_NOLOAD;
+#endif
 
 	HMODULE ret = ( HMODULE )dlopen( str, dlopen_mode );
 	if ( !ret && !( flags & SYS_NOLOAD ) )
@@ -301,20 +303,34 @@ CSysModule *Sys_LoadModule( const char *pModuleName, Sys_Flags flags /* = SYS_NO
 		size_t cCwd = strlen( szCwd );
 
 		bool bUseLibPrefix = false;
-		
+
+#ifdef ANDROID
+		struct stat statBuf;
+		char *dataPath = getenv("APP_DATA_PATH");
+
+
+		Q_snprintf(szAbsoluteModuleName, sizeof(szAbsoluteModuleName), "%s/lib/lib%s", dataPath ,pModuleName);
+		if( stat(szAbsoluteModuleName, &statBuf) != 0 )
+			Q_snprintf(szAbsoluteModuleName, sizeof(szAbsoluteModuleName), "%s/lib/%s", dataPath ,pModuleName);
+#else
+
 #ifdef POSIX
 		struct stat statBuf;
 		Q_snprintf(szModuleName, sizeof(szModuleName), "bin/lib%s", pModuleName);
 		bUseLibPrefix |= stat(szModuleName, &statBuf) == 0;
 #endif
-
 		if( bUseLibPrefix )
 			Q_snprintf( szAbsoluteModuleName, sizeof(szAbsoluteModuleName), "%s/bin/lib%s", szCwd, pModuleName );
 		else
 			Q_snprintf( szAbsoluteModuleName, sizeof(szAbsoluteModuleName), "%s/bin/%s", szCwd, pModuleName );
+#endif // ANDROID
+		Msg("LoadLibrary: pModule: %s, path: %s\n", pModuleName, szAbsoluteModuleName);
 
 		hDLL = Sys_LoadLibrary( szAbsoluteModuleName, flags );
 	}
+	else
+		Msg("LoadLibrary: path: %s\n", pModuleName);
+
 
 	if ( !hDLL )
 	{
diff --git a/tier1/pathmatch.cpp b/tier1/pathmatch.cpp
index bd8d3cbd..8e439dfe 100644
--- a/tier1/pathmatch.cpp
+++ b/tier1/pathmatch.cpp
@@ -750,7 +750,7 @@ extern "C" {
 
 		return CALL(freopen)( mpath, mode, stream );
 	}
-
+#ifndef ANDROID
 	WRAP(fopen, FILE *, const char *path, const char *mode)
 	{
 		// if mode does not have w, a, or +, it's open for read.
@@ -788,7 +788,7 @@ extern "C" {
 	{
 		return __wrap_open( pathname, O_CREAT|O_WRONLY|O_TRUNC, mode );
 	}
-
+#endif
 	int __wrap_access(const char *pathname, int mode)
 	{
 		return __real_access( CWrap( pathname, false ), mode );
@@ -815,6 +815,7 @@ extern "C" {
 	{
 		return CALL(opendir)( CWrap( name, false ) );
 	}
+#ifndef ANDROID
 
     WRAP(__xstat, int, int __ver, __const char *__filename, struct stat *__stat_buf)
     {
@@ -835,7 +836,7 @@ extern "C" {
     {
         return CALL(__lxstat64)( __ver, CWrap( __filename, false), __stat_buf );
     }
-
+#endif
 	WRAP(chmod, int, const char *path, mode_t mode)
 	{
         return CALL(chmod)( CWrap( path, false), mode );
diff --git a/tier1/wscript b/tier1/wscript
index c8a8673e..80a32f69 100755
--- a/tier1/wscript
+++ b/tier1/wscript
@@ -40,7 +40,7 @@ def build(bld):
 		'memstack.cpp',
 		'NetAdr.cpp',
 		'newbitbuf.cpp',
-		'pathmatch.cpp', # [$LINUXALL]
+#		'pathmatch.cpp', # [$LINUXALL]
 		# 'processor_detect.cpp', # [$WINDOWS||$X360]
 		'processor_detect_linux.cpp', # [$POSIX]
 		'qsort_s.cpp', # [$LINUXALL||$PS3]
diff --git a/togl/linuxwin/glentrypoints.cpp b/togl/linuxwin/glentrypoints.cpp
index 25e49ab3..ef1f01ff 100644
--- a/togl/linuxwin/glentrypoints.cpp
+++ b/togl/linuxwin/glentrypoints.cpp
@@ -43,7 +43,7 @@
 #include "tier1.h"
 #include "tier2/tier2.h"
 
-#ifdef _LINUX
+#if defined(_LINUX) && !defined(__ANDROID__)
 #include <GL/glx.h>
 #endif
 
@@ -296,7 +296,7 @@ static bool CheckOpenGLExtension_internal(const char *ext, const int coremajor,
 				return false;
 			}
 		}
-#elif !defined ( OSX )
+#elif !defined ( OSX ) && !defined( __ANDROID__ )
 		if (!ptr)
 		{
 			static CDynamicFunctionOpenGL< true, Display *( APIENTRY *)( ), Display* > glXGetCurrentDisplay("glXGetCurrentDisplay");
@@ -377,10 +377,12 @@ COpenGLEntryPoints::COpenGLEntryPoints()
 	// !!! FIXME:  hint Apple's drivers and not because we rely on the
 	// !!! FIXME:  functionality. If so, just remove this check (and the
 	// !!! FIXME:  GL_NV_fence code entirely).
+#ifndef ANDROID // HACK
  	if ((m_bHave_OpenGL) && ((!m_bHave_GL_NV_fence) && (!m_bHave_GL_ARB_sync) && (!m_bHave_GL_APPLE_fence)))
  	{
  		Error( "Required OpenGL extension \"GL_NV_fence\", \"GL_ARB_sync\", or \"GL_APPLE_fence\" is not supported. Please upgrade your OpenGL driver." );
  	}
+#endif
 
 	// same extension, different name.
 	if (m_bHave_GL_EXT_vertex_array_bgra || m_bHave_GL_ARB_vertex_array_bgra)
diff --git a/togl/wscript b/togl/wscript
index bdce47f3..ab31edfe 100755
--- a/togl/wscript
+++ b/togl/wscript
@@ -13,7 +13,6 @@ def options(opt):
 
 def configure(conf):
 	conf.define('TOGL_DLL_EXPORT',1)
-	conf.define('PROTECTED_THINGS_ENABLE',1)
 	conf.env.append_unique('DEFINES',['strncpy=use_Q_strncpy_instead',
 		'_snprintf=use_Q_snprintf_instead'])
 
diff --git a/vgui2/vgui_surfacelib/linuxfont.cpp b/vgui2/vgui_surfacelib/linuxfont.cpp
index b80d908c..f94d7a40 100644
--- a/vgui2/vgui_surfacelib/linuxfont.cpp
+++ b/vgui2/vgui_surfacelib/linuxfont.cpp
@@ -92,7 +92,8 @@ void CLinuxFont::CreateFontList()
 	if ( m_FriendlyNameCache.Count() > 0 ) 
 		return;
 
-	if(!FcInit()) 
+#ifndef ANDROID
+	if(!FcInit())
 		return;
     FcConfig *config;
     FcPattern *pat;
@@ -160,8 +161,11 @@ void CLinuxFont::CreateFontList()
     FcFontSetDestroy(fontset);
     FcObjectSetDestroy(os);
     FcPatternDestroy(pat);
+
+#endif
 }
 
+#ifndef ANDROID
 static FcPattern* FontMatch(const char* type, FcType vtype, const void* value,
                             ...)
 {
@@ -204,6 +208,7 @@ static FcPattern* FontMatch(const char* type, FcType vtype, const void* value,
 
     return match;
 }
+#endif
 
 bool CLinuxFont::CreateFromMemory(const char *windowsFontName, void *data, int datasize, int tall, int weight, int blur, int scanlines, int flags)
 {
@@ -400,6 +405,52 @@ bool CLinuxFont::CreateFromMemory(const char *windowsFontName, void *data, int d
 	return true;
 }
 
+#ifdef ANDROID
+char *FindFontAndroid(bool bBold, int italic)
+{
+	const char *fontFileName, *fontFileNamePost = NULL;
+
+	fontFileName = "Roboto";
+
+	if( bBold )
+	{
+		if( italic )
+			fontFileNamePost = "BoldItalic";
+		else
+			fontFileNamePost = "Bold";
+	}
+	else if( italic )
+		fontFileNamePost = "Italic";
+	else
+		fontFileName = "Regular";
+
+	char dataFile[MAX_PATH];
+
+	if( fontFileNamePost )
+		snprintf( dataFile, sizeof dataFile, "/system/fonts/%s-%s.ttf", fontFileName, fontFileNamePost );
+	else
+		snprintf( dataFile, sizeof dataFile, "/system/fonts/%s.ttf", fontFileName );
+
+	if( access( dataFile, R_OK ) != 0 )
+	{
+		fontFileNamePost = NULL;
+		fontFileName = "DroidSans";
+		if( bBold > 500 )
+			fontFileNamePost = "Bold";
+
+		if( fontFileNamePost )
+			snprintf( dataFile, sizeof dataFile, "/system/fonts/%s-%s.ttf", fontFileName, fontFileNamePost );
+		else
+			snprintf( dataFile, sizeof dataFile, "/system/fonts/%s.ttf", fontFileName );
+
+		if( access( dataFile, R_OK ) != 0 )
+			return NULL;
+	}
+
+	return dataFile;
+}
+#endif
+
 //-----------------------------------------------------------------------------
 // Purpose: Given a font name from windows, match it to the filename and return that.
 //-----------------------------------------------------------------------------
@@ -413,18 +464,24 @@ char *CLinuxFont::GetFontFileName( const char *windowsFontName, int flags )
 	else if ( !Q_stricmp( pchFontName, "Arial Black" ) || Q_stristr( pchFontName, "bold" ) )
 		bBold = true;
 
-    const int italic = ( flags & vgui::ISurface::FONTFLAG_ITALIC ) ? FC_SLANT_ITALIC : FC_SLANT_ROMAN;
-	const int nFcWeight = bBold ? FC_WEIGHT_BOLD : FC_WEIGHT_NORMAL;
+	const int italic = ( flags & vgui::ISurface::FONTFLAG_ITALIC ) ? FC_SLANT_ITALIC : FC_SLANT_ROMAN;
 
-    FcPattern *match = FontMatch( FC_FAMILY, FcTypeString, pchFontName,
+#ifdef ANDROID
+	char *filename = FindFontAndroid( bBold, italic );
+	Msg("Android font: %s", filename);
+	if( !filename ) return NULL;
+	return strdup( filename );
+#else
+	const int nFcWeight = bBold ? FC_WEIGHT_BOLD : FC_WEIGHT_NORMAL;
+	FcPattern *match = FontMatch( FC_FAMILY, FcTypeString, pchFontName,
 								  FC_WEIGHT, FcTypeInteger, nFcWeight,
 								  FC_SLANT, FcTypeInteger, italic,
 								  NULL);
  	if ( !match )
-    {
+	{
 		AssertMsg1( false, "Unable to find font named %s\n", windowsFontName );
-        return NULL;
-    }
+		return NULL;
+	}
 	else
 	{
 		char *filenameret = NULL;
@@ -440,8 +497,11 @@ char *CLinuxFont::GetFontFileName( const char *windowsFontName, int flags )
 		}
 
 		FcPatternDestroy( match );
+		Msg("Android font fc: %s", filenameret);
+
 		return filenameret;
 	}
+#endif
 }
 
 //-----------------------------------------------------------------------------
@@ -502,7 +562,7 @@ void CLinuxFont::GetCharRGBA( wchar_t ch, int rgbaWide, int rgbaTall, unsigned c
 	if( error == 0 )
 	{
 		uint32 alpha_scale = 1;
-		int Width = min( rgbaWide, bitmap.width );
+		int Width = MIN( rgbaWide, bitmap.width );
 		unsigned char *rgba = prgba + ( nSkipRows * rgbaWide * 4 );
 
 		switch( m_face->glyph->bitmap.pixel_mode )
diff --git a/vgui2/vgui_surfacelib/wscript b/vgui2/vgui_surfacelib/wscript
index 44dc4e78..0de65a46 100644
--- a/vgui2/vgui_surfacelib/wscript
+++ b/vgui2/vgui_surfacelib/wscript
@@ -31,7 +31,7 @@ def build(bld):
 		'../../public',
 		'../../public/tier0',
 		'../../public/tier1',
-		'../../common'
+		'../../common',
 	] + bld.env.INCLUDES_FT2
 
 	defines = []
diff --git a/vguimatsurface/wscript b/vguimatsurface/wscript
index 90ebb812..7359a3ab 100644
--- a/vguimatsurface/wscript
+++ b/vguimatsurface/wscript
@@ -15,7 +15,7 @@ def configure(conf):
 	conf.define('VGUIMATSURFACE_DLL_EXPORT',1)
 	conf.define('GAMEUI_EXPORTS',1)
 	conf.define('DONT_PROTECT_FILEIO_FUNCTIONS',1)
-	conf.define('PROTECTED_THINGS_ENABLE',1)
+	#conf.define('PROTECTED_THINGS_ENABLE',1) # conflicts with stlport
 
 
 def build(bld):
@@ -38,13 +38,16 @@ def build(bld):
 		'../public',
 		'../public/tier0',
 		'../public/tier1',
-		'../common'
-	] + bld.env.INCLUDES_SDL2 + bld.env.INCLUDES_FREETYPE
+		'../common',
+	]
 
 	defines = []
 
 	libs = ['bitmap','mathlib','tier0','vgui_controls','tier1','vstdlib','tier2','tier3','vgui_surfacelib','FT2','FC','SDL2']
 
+	if bld.env.DEST_OS == 'android':
+		libs += ['EXPAT']
+
 	install_path = bld.env.LIBDIR
 
 	bld.shlib(
diff --git a/vstdlib/wscript b/vstdlib/wscript
index 730ab25c..3e2547af 100755
--- a/vstdlib/wscript
+++ b/vstdlib/wscript
@@ -40,6 +40,9 @@ def build(bld):
 
 	libs = ['tier0','tier1']
 
+	if bld.env.DEST_OS == 'android':
+		libs += ['ANDROID_SUPPORT']
+
 	install_path = bld.env.LIBDIR
 
 	bld.shlib(
diff --git a/wscript b/wscript
index ab1bcf05..0367b858 100644
--- a/wscript
+++ b/wscript
@@ -1,6 +1,6 @@
 #! /usr/bin/env python
 # encoding: utf-8
-# a1batross, mittorn, nillerusr
+# nillerusr
 
 from __future__ import print_function
 from waflib import Logs, Context, Configure
@@ -86,7 +86,7 @@ projects={
 		'dedicated_main',
 		'dmxloader',
 		'engine',
-#		'game/server',
+		'game/server',
 		'ivp/havana',
 		'ivp/havana/havok/hk_base',
 		'ivp/havana/havok/hk_math',
@@ -154,15 +154,12 @@ def define_platform(conf):
 	if conf.options.SDL:
 		conf.define('USE_SDL', 1)
 
-	print(conf.env.DEST_OS)
-
 	if conf.env.DEST_OS == 'linux':
 		conf.define('_GLIBCXX_USE_CXX11_ABI',0)
 		conf.env.append_unique('DEFINES', [
 			'LINUX=1', '_LINUX=1',
 			'POSIX=1', '_POSIX=1',
 			'GNUC',
-			'NDEBUG',
 			'NO_HOOK_MALLOC',
 			'_DLL_EXT=.so'
 		])
@@ -173,11 +170,19 @@ def define_platform(conf):
 			'LINUX=1', '_LINUX=1',
 			'POSIX=1', '_POSIX=1',
 			'GNUC',
-			'NDEBUG',
 			'NO_HOOK_MALLOC',
 			'_DLL_EXT=.so'
 		])
 
+	if conf.options.DEBUG_ENGINE:
+		conf.env.append_unique('DEFINES', [
+			'DEBUG', '_DEBUG'
+		])
+	else:
+		conf.env.append_unique('DEFINES', [
+			'NDEBUG'
+		])
+
 def options(opt):
 	grp = opt.add_option_group('Common options')
 
@@ -187,12 +192,18 @@ def options(opt):
 	grp.add_option('-d', '--dedicated', action = 'store_true', dest = 'DEDICATED', default = False,
 		help = 'build dedicated server [default: %default]')
 
+	grp.add_option('-D', '--debug-engine', action = 'store_true', dest = 'DEBUG_ENGINE', default = False,
+		help = 'build with -DDEBUG [default: %default]')
+
 	grp.add_option('--use-sdl', action = 'store', dest = 'SDL', type = 'int', default = True,
 		help = 'build engine with SDL [default: %default]')
 
 	grp.add_option('--use-togl', action = 'store', dest = 'GL', type = 'int', default = True,
 		help = 'build engine with ToGL [default: %default]')
 
+	grp.add_option('--use-ccache', action = 'store_true', dest = 'CCACHE', default = False,
+		help = 'build using ccache [default: %default]')
+
 	opt.load('compiler_optimizations subproject')
 
 #	opt.add_subproject(projects['game'])
@@ -226,20 +237,6 @@ def configure(conf):
 
 	conf.load('force_32bit')
 
-	if conf.options.SDL:
-		conf.check_cfg(package='sdl2', uselib_store='SDL2', args=['--cflags', '--libs'])
-	if conf.options.DEDICATED:
-		conf.check_cfg(package='libedit', uselib_store='EDIT', args=['--cflags', '--libs'])
-	else:
-		conf.check_pkg('freetype2', 'FT2', FT2_CHECK)
-		conf.check_pkg('fontconfig', 'FC', FC_CHECK)
-		conf.check_cfg(package='openal', uselib_store='OPENAL', args=['--cflags', '--libs'])
-		conf.check_cfg(package='libjpeg', uselib_store='JPEG', args=['--cflags', '--libs'])
-		conf.check_cfg(package='libpng', uselib_store='PNG', args=['--cflags', '--libs'])
-		conf.check_cfg(package='libcurl', uselib_store='CURL', args=['--cflags', '--libs'])
-
-	conf.check_cfg(package='zlib', uselib_store='ZLIB', args=['--cflags', '--libs'])
-
 	compiler_optional_flags = [
 		'-Wall',
 		'-fdiagnostics-color=always',
@@ -258,6 +255,17 @@ def configure(conf):
 
 	flags = ['-fPIC']
 
+	if conf.env.DEST_OS == 'android':
+		flags += [
+			'-L'+os.path.abspath('.')+'/lib/android/armeabi-v7a/',
+			'-I'+os.path.abspath('.')+'/thirdparty/curl/include',
+			'-I'+os.path.abspath('.')+'/thirdparty/SDL',
+			'-I'+os.path.abspath('.')+'/thirdparty/openal-soft/include/',
+			'-I'+os.path.abspath('.')+'/thirdparty/fontconfig',
+			'-I'+os.path.abspath('.')+'/thirdparty/freetype/include',
+			'-llog'
+		]
+
 	if conf.env.DEST_CPU == 'arm':
 		flags += ['-mfpu=neon', '-fsigned-char']
 	else:
@@ -270,15 +278,17 @@ def configure(conf):
 	cxxflags = list(cflags) + ['-std=c++11','-fpermissive']
 
 	if conf.env.COMPILER_CC == 'gcc':
-		wrapfunctions = ['freopen','fopen','open','creat','access','__xstat','stat','lstat','fopen64','open64',
-			'opendir','__lxstat','chmod','chown','lchown','symlink','link','__lxstat64','mknod',
-			'utimes','unlink','rename','utime','__xstat64','mount','mkfifo','mkdir','rmdir','scandir','realpath']
+#		wrapfunctions = ['freopen','creat','access','__xstat','stat','lstat','fopen64','open64',
+#			'opendir','__lxstat','chmod','chown','lchown','symlink','link','__lxstat64','mknod',
+#			'utimes','unlink','rename','utime','__xstat64','mount','mkdir','rmdir','scandir','realpath','mkfifo']
+
+#		for func in wrapfunctions:
+#			linkflags += ['-Wl,--wrap='+func]
 
-		for func in wrapfunctions:
-			linkflags += ['-Wl,--wrap='+func]
 
 		conf.define('COMPILER_GCC', 1)
 
+
 	if conf.env.COMPILER_CC != 'msvc':
 		conf.check_cc(cflags=cflags, linkflags=linkflags, msg='Checking for required C flags')
 		conf.check_cxx(cxxflags=cxxflags, linkflags=linkflags, msg='Checking for required C++ flags')
@@ -296,6 +306,32 @@ def configure(conf):
 	conf.env.append_unique('LINKFLAGS', linkflags)
 	conf.env.append_unique('INCLUDES', [os.path.abspath('common/')])
 
+	if conf.env.DEST_OS != 'android':
+		if conf.options.SDL:
+			conf.check_cfg(package='sdl2', uselib_store='SDL2', args=['--cflags', '--libs'])
+		if conf.options.DEDICATED:
+			conf.check_cfg(package='libedit', uselib_store='EDIT', args=['--cflags', '--libs'])
+		else:
+			conf.check_pkg('freetype2', 'FT2', FT2_CHECK)
+			conf.check_pkg('fontconfig', 'FC', FC_CHECK)
+			conf.check_cfg(package='openal', uselib_store='OPENAL', args=['--cflags', '--libs'])
+			conf.check_cfg(package='libjpeg', uselib_store='JPEG', args=['--cflags', '--libs'])
+			conf.check_cfg(package='libpng', uselib_store='PNG', args=['--cflags', '--libs'])
+			conf.check_cfg(package='libcurl', uselib_store='CURL', args=['--cflags', '--libs'])
+		conf.check_cfg(package='zlib', uselib_store='ZLIB', args=['--cflags', '--libs'])
+	else:
+		conf.check(lib='SDL2', uselib_store='SDL2')
+		conf.check(lib='freetype2', uselib_store='FT2')
+		conf.check(lib='openal', uselib_store='OPENAL')
+		conf.check(lib='jpeg', uselib_store='JPEG')
+		conf.check(lib='png', uselib_store='PNG')
+		conf.check(lib='curl', uselib_store='CURL')
+		conf.check(lib='z', uselib_store='ZLIB')
+		conf.check(lib='crypto', uselib_store='CRYPTO')
+		conf.check(lib='ssl', uselib_store='SSL')
+		conf.check(lib='expat', uselib_store='EXPAT')
+		conf.check(lib='android_support', uselib_store='ANDROID_SUPPORT')
+
 	if conf.env.DEST_OS != 'win32':
 		conf.check_cc(lib='dl', mandatory=False)
 		conf.check_cc(lib='bz2', mandatory=False)
@@ -336,12 +372,19 @@ def configure(conf):
 	else:
 		conf.env.LIBDIR = conf.env.BINDIR = conf.env.PREFIX
 
+	if conf.options.CCACHE:
+		conf.env.CC.insert(0, 'ccache')
+		conf.env.CXX.insert(0, 'ccache')
+		print( conf.env )
+
 	if conf.options.DEDICATED:
 		conf.add_subproject(projects['dedicated'])
 	else:
 		conf.add_subproject(projects['game'])
 
 def build(bld):
+	os.environ["CCACHE_DIR"] = os.path.abspath('.ccache/'+bld.env.COMPILER_CC+'/'+bld.env.DEST_OS+'/'+bld.env.DEST_CPU)
+
 	if bld.env.DEDICATED:
 		bld.add_subproject(projects['dedicated'])
 	else: