diff -uNr The-Powder-Toy-93.3/SConscript The-Powder-Toy-93.3.mod/SConscript
--- The-Powder-Toy-93.3/SConscript	2018-06-15 13:35:44.616286939 +0300
+++ The-Powder-Toy-93.3.mod/SConscript	2018-06-15 13:55:39.922920452 +0300
@@ -137,7 +137,7 @@
 for var in ["CC","CXX","LD","LIBPATH","STRIP"]:
 	if var in os.environ:
 		env[var] = os.environ[var]
-		print("copying environment variable {0}={1!r}".format(var,os.environ[var]))
+		print(("copying environment variable {0}={1!r}".format(var,os.environ[var])))
 # variables containing several space separated things
 for var in ["CFLAGS","CCFLAGS","CXXFLAGS","LINKFLAGS","CPPDEFINES","CPPPATH"]:
 	if var in os.environ:
@@ -145,7 +145,7 @@
 			env[var] += SCons.Util.CLVar(os.environ[var])
 		else:
 			env[var] = SCons.Util.CLVar(os.environ[var])
-		print("copying environment variable {0}={1!r}".format(var,os.environ[var]))
+		print(("copying environment variable {0}={1!r}".format(var,os.environ[var])))
 
 #Used for intro text / executable name, actual bit flags are only set if the --64bit/--32bit command line args are given
 def add32bitflags(env):
@@ -158,12 +158,8 @@
 	env["BIT"] = 64
 #add 32/64 bit defines before configuration
 if GetOption('64bit'):
-	env.Append(LINKFLAGS=['-m64'])
-	env.Append(CCFLAGS=['-m64'])
 	add64bitflags(env)
 elif GetOption('32bit'):
-	env.Append(LINKFLAGS=['-m32'])
-	env.Append(CCFLAGS=['-m32'])
 	add32bitflags(env)
 
 if GetOption('universal'):
@@ -246,16 +242,14 @@
 		runSdlConfig = platform == "Linux" or compilePlatform == "Linux" or platform == "FreeBSD"
 		if platform == "Darwin" and conf.CheckFramework("SDL"):
 			runSdlConfig = False
-		elif not conf.CheckLib("SDL"):
-			FatalError("SDL development library not found or not installed")
 
 		if runSdlConfig:
 			try:
-				env.ParseConfig('sdl-config --cflags')
+				env.ParseConfig('bash /data/data/com.termux/files/usr/bin/sdl-config --cflags')
 				if GetOption('static'):
-					env.ParseConfig('sdl-config --static-libs')
+					env.ParseConfig('bash /data/data/com.termux/files/usr/bin/sdl-config --static-libs')
 				else:
-					env.ParseConfig('sdl-config --libs')
+					env.ParseConfig('bash /data/data/com.termux/files/usr/bin/sdl-config --libs')
 			except:
 				pass
 
@@ -333,10 +327,6 @@
 	if not conf.CheckLib(['z', 'zlib']):
 		FatalError("libz not found or not installed")
 
-	#Look for pthreads
-	if not conf.CheckLib(['pthread', 'pthreadVC2']):
-		FatalError("pthreads development library not found or not installed")
-
 	if msvc:
 		if not conf.CheckHeader('dirent.h') or not conf.CheckHeader('fftw3.h') or not conf.CheckHeader('pthread.h') or not conf.CheckHeader('zlib.h'):
 			FatalError("Required headers not found")
@@ -367,9 +357,6 @@
 	if platform == "Linux" or platform == "FreeBSD":
 		if not conf.CheckLib('X11'):
 			FatalError("X11 development library not found or not installed")
-
-		if not conf.CheckLib('rt'):
-			FatalError("librt not found or not installed")
 	elif platform == "Windows":
 		#These need to go last
 		if not conf.CheckLib('gdi32') or not conf.CheckLib('winmm') or (not msvc and not conf.CheckLib('dxguid')):
@@ -429,8 +416,6 @@
 
 
 #Add architecture flags and defines
-if isX86:
-	env.Append(CPPDEFINES='X86')
 if not GetOption('no-sse'):
 	if GetOption('sse'):
 		if msvc:
@@ -475,7 +460,7 @@
 		else:
 			env.Append(CCFLAGS=['/MD'])
 	else:
-		env.Append(CCFLAGS=['-O3', '-ftree-vectorize', '-funsafe-math-optimizations', '-ffast-math', '-fomit-frame-pointer'])
+		env.Append(CCFLAGS=['-Oz', '-fomit-frame-pointer'])
 		if platform != "Darwin":
 			env.Append(CCFLAGS=['-funsafe-loop-optimizations'])
 
@@ -546,8 +531,8 @@
 if platform == "Windows":
 	sources += env.RES('resources/powder-res.rc')
 	if not msvc:
-		sources = filter(lambda source: not 'src\\simulation\\Gravity.cpp' in str(source), sources)
-		sources = filter(lambda source: not 'src/simulation/Gravity.cpp' in str(source), sources)
+		sources = [source for source in sources if not 'src\\simulation\\Gravity.cpp' in str(source)]
+		sources = [source for source in sources if not 'src/simulation/Gravity.cpp' in str(source)]
 		envCopy = env.Clone()
 		envCopy.Append(CCFLAGS='-mstackrealign')
 		sources += envCopy.Object('src/simulation/Gravity.cpp')