diff --git a/drivers/SCsub b/drivers/SCsub
index 2ad924ad1d8..c496f46a1f2 100644
--- a/drivers/SCsub
+++ b/drivers/SCsub
@@ -1,42 +1,47 @@
 Import('env')
 
-env_drivers = env.Clone()
-
 env.drivers_sources=[]
-#env.add_source_files(env.drivers_sources,"*.cpp")
 
-Export('env_drivers')
-
-SConscript('unix/SCsub');
-SConscript('alsa/SCsub');
-SConscript('pulseaudio/SCsub');
-SConscript('windows/SCsub');
-SConscript('gles2/SCsub');
-SConscript('gl_context/SCsub');
-
-SConscript("png/SCsub");
 if ("builtin_zlib" in env and env["builtin_zlib"] == "yes"):
 	SConscript("zlib/SCsub");
 
+# OS drivers
+SConscript('unix/SCsub');
+SConscript('windows/SCsub');
+
+# Sounds drivers
+SConscript('alsa/SCsub');
+SConscript('pulseaudio/SCsub');
 if (env["platform"] == "windows"):
 	SConscript("rtaudio/SCsub");
+
+# Graphics drivers
+SConscript('gles2/SCsub');
+SConscript('gl_context/SCsub');
+
+# Core dependencies
+SConscript("png/SCsub");
 SConscript("nrex/SCsub");
+
+# Tools override
+# FIXME: Should likely be integrated in the tools/ codebase
 if (env["tools"]=="yes"):
 	SConscript("convex_decomp/SCsub");
 
-num = 0
-cur_base = ""
-total = len(env.drivers_sources)
-max_src = 64
-list = []
-lib_list = []
-
-import string
-
 if env['vsproj']=="yes":
 	env.AddToVSProject(env.drivers_sources)
 
-if (env.split_drivers): #split drivers, this used to be needed for windows until separate builders for windows were created
+
+# Split drivers, this used to be needed for windows until separate builders for windows were created
+# FIXME: Check if still needed now that the drivers were made more lightweight
+if (env.split_drivers):
+	import string
+
+	num = 0
+	cur_base = ""
+	max_src = 64
+	list = []
+	lib_list = []
 
 	for f in env.drivers_sources:
 		fname = ""
@@ -48,14 +53,14 @@ if (env.split_drivers): #split drivers, this used to be needed for windows until
 		base = string.join(fname.split("/")[:2], "/")
 		if base != cur_base and len(list) > max_src:
 			if num > 0:
-				lib = env_drivers.Library("drivers"+str(num), list)
+				lib = env.Library("drivers"+str(num), list)
 				lib_list.append(lib)
 				list = []
 			num = num+1
 		cur_base = base
 		list.append(f)
 
-	lib = env_drivers.Library("drivers"+str(num), list)
+	lib = env.Library("drivers"+str(num), list)
 	lib_list.append(lib)
 
 	if len(lib_list) > 0:
@@ -63,15 +68,15 @@ if (env.split_drivers): #split drivers, this used to be needed for windows until
 		if os.name=='posix' and sys.platform=='msys':
 			env.Replace(ARFLAGS=['rcsT'])
 
-			lib = env_drivers.Library("drivers_collated", lib_list)
+			lib = env.Library("drivers_collated", lib_list)
 			lib_list = [lib]
 
 	drivers_base=[]
-	env_drivers.add_source_files(drivers_base,"*.cpp")
-	lib_list.insert(0, env_drivers.Library("drivers", drivers_base))
+	env.add_source_files(drivers_base,"*.cpp")
+	lib_list.insert(0, env.Library("drivers", drivers_base))
 
 	env.Prepend(LIBS=lib_list)
 else:
-	env_drivers.add_source_files(env.drivers_sources,"*.cpp")
-	lib = env_drivers.Library("drivers",env.drivers_sources)
+	env.add_source_files(env.drivers_sources,"*.cpp")
+	lib = env.Library("drivers",env.drivers_sources)
 	env.Prepend(LIBS=[lib])
diff --git a/drivers/alsa/SCsub b/drivers/alsa/SCsub
index 9fbb467baa1..0582e01978f 100644
--- a/drivers/alsa/SCsub
+++ b/drivers/alsa/SCsub
@@ -1,5 +1,5 @@
 Import('env')
 
-env.add_source_files(env.drivers_sources,"*.cpp")
+env.add_source_files(env.drivers_sources, "*.cpp")
 
 Export('env')
diff --git a/drivers/convex_decomp/SCsub b/drivers/convex_decomp/SCsub
index 6699efef756..0582e01978f 100644
--- a/drivers/convex_decomp/SCsub
+++ b/drivers/convex_decomp/SCsub
@@ -1,4 +1,5 @@
 Import('env')
-Export('env');
 
-env.add_source_files(env.drivers_sources,"*.cpp")
+env.add_source_files(env.drivers_sources, "*.cpp")
+
+Export('env')
diff --git a/drivers/gl_context/SCsub b/drivers/gl_context/SCsub
index 9a158f08213..b05a96cb99c 100644
--- a/drivers/gl_context/SCsub
+++ b/drivers/gl_context/SCsub
@@ -1,7 +1,4 @@
 Import('env')
-Import('env_drivers')
-
-env_glew = env_drivers.Clone()
 
 if (env["platform"] in ["haiku","osx","windows","x11"]):
 	# Thirdparty source files
@@ -12,15 +9,13 @@ if (env["platform"] in ["haiku","osx","windows","x11"]):
 		]
 		thirdparty_sources = [thirdparty_dir + file for file in thirdparty_sources]
 
-		env_glew.add_source_files(env.drivers_sources, thirdparty_sources)
-		env_glew.Append(CPPFLAGS = ['-DGLEW_STATIC'])
-		env_glew.Append(CPPPATH = [thirdparty_dir])
-		# Also pass to global env, used by platform code
+		env.add_source_files(env.drivers_sources, thirdparty_sources)
+		env.Append(CPPFLAGS = ['-DGLEW_STATIC'])
 		env.Append(CPPPATH = [thirdparty_dir])
 
 	env.Append(CPPFLAGS = ['-DGLEW_ENABLED'])
 
 # Godot source files
-env_glew.add_source_files(env.drivers_sources, "*.cpp")
+env.add_source_files(env.drivers_sources, "*.cpp")
 
 Export('env')
diff --git a/drivers/gles2/SCsub b/drivers/gles2/SCsub
index a17335b41b3..89d7d86360e 100644
--- a/drivers/gles2/SCsub
+++ b/drivers/gles2/SCsub
@@ -1,5 +1,7 @@
 Import('env')
 
-env.add_source_files(env.drivers_sources,"*.cpp")
+env.add_source_files(env.drivers_sources, "*.cpp")
 
 SConscript("shaders/SCsub")
+
+Export('env')
diff --git a/drivers/gles2/shaders/SCsub b/drivers/gles2/shaders/SCsub
index 38177d725fb..88445f34c1a 100644
--- a/drivers/gles2/shaders/SCsub
+++ b/drivers/gles2/shaders/SCsub
@@ -6,3 +6,5 @@ if env['BUILDERS'].has_key('GLSL120GLES'):
 	env.GLSL120GLES('canvas_shadow.glsl');
 	env.GLSL120GLES('blur.glsl');
 	env.GLSL120GLES('copy.glsl');
+
+Export('env')
diff --git a/drivers/nrex/SCsub b/drivers/nrex/SCsub
index a00c7b86f4f..0582e01978f 100644
--- a/drivers/nrex/SCsub
+++ b/drivers/nrex/SCsub
@@ -1,7 +1,5 @@
 Import('env')
 
-sources = [
-	'nrex.cpp',
-	'regex.cpp',
-]
-env.add_source_files(env.drivers_sources, sources)
+env.add_source_files(env.drivers_sources, "*.cpp")
+
+Export('env')
diff --git a/drivers/png/SCsub b/drivers/png/SCsub
index 1ab42a6db98..d1dab15ed4a 100644
--- a/drivers/png/SCsub
+++ b/drivers/png/SCsub
@@ -1,8 +1,8 @@
 Import('env')
-Import('env_drivers')
+
+env_png = env.Clone()
 
 # Thirdparty source files
-
 if (env["libpng"] == "builtin"):
 	thirdparty_dir = "#thirdparty/libpng/"
 	thirdparty_sources = [
@@ -26,24 +26,21 @@ if (env["libpng"] == "builtin"):
 	# Currently .ASM filter_neon.S does not compile on NT.
 	import os
 	if ("neon_enabled" in env and env["neon_enabled"]) and os.name!="nt":
-		env_drivers.Append(CPPFLAGS=["-DPNG_ARM_NEON_OPT=2"])
-		env_neon = env_drivers.Clone();
+		env_png.Append(CPPFLAGS = ["-DPNG_ARM_NEON_OPT=2"])
+		env_neon = env_png.Clone();
 		if "S_compiler" in env:
 			env_neon['CC'] = env['S_compiler']
-		#env_neon.Append(CPPFLAGS=["-DPNG_ARM_NEON"])
+		#env_neon.Append(CPPFLAGS = ["-DPNG_ARM_NEON"])
 		thirdparty_sources.append(env_neon.Object(thirdparty_dir + "/arm/arm_init.c"))
 		thirdparty_sources.append(env_neon.Object(thirdparty_dir + "/arm/filter_neon.S"))
 	else:
-		env_drivers.Append(CPPFLAGS=["-DPNG_ARM_NEON_OPT=0"])
+		env_png.Append(CPPFLAGS = ["-DPNG_ARM_NEON_OPT=0"])
 
-	#env_drivers.add_source_files(env.drivers_sources, thirdparty_sources)
+	#env_png.add_source_files(env.drivers_sources, thirdparty_sources)
 	env.drivers_sources += thirdparty_sources # Concatenation necessary for neon objects it seems?
-	env_drivers.Append(CPPPATH = [thirdparty_dir])
+	env_png.Append(CPPPATH = [thirdparty_dir])
 
+# Godot source files
+env_png.add_source_files(env.drivers_sources, "*.cpp")
 
-# Godot's own source files
-
-env_drivers.add_source_files(env.drivers_sources, "*.cpp")
-
-Export('env_drivers')
 Export('env')
diff --git a/drivers/pulseaudio/SCsub b/drivers/pulseaudio/SCsub
index 9fbb467baa1..0582e01978f 100644
--- a/drivers/pulseaudio/SCsub
+++ b/drivers/pulseaudio/SCsub
@@ -1,5 +1,5 @@
 Import('env')
 
-env.add_source_files(env.drivers_sources,"*.cpp")
+env.add_source_files(env.drivers_sources, "*.cpp")
 
 Export('env')
diff --git a/drivers/unix/SCsub b/drivers/unix/SCsub
index 3d46a85cdf0..36a172025d3 100644
--- a/drivers/unix/SCsub
+++ b/drivers/unix/SCsub
@@ -10,6 +10,6 @@ f = open("os_unix_global_settings_path.cpp","wb")
 f.write(g_set_p)
 f.close()
 
-env.add_source_files(env.drivers_sources,"*.cpp")
+env.add_source_files(env.drivers_sources, "*.cpp")
 
 Export('env')
diff --git a/drivers/windows/SCsub b/drivers/windows/SCsub
index 9fbb467baa1..0582e01978f 100644
--- a/drivers/windows/SCsub
+++ b/drivers/windows/SCsub
@@ -1,5 +1,5 @@
 Import('env')
 
-env.add_source_files(env.drivers_sources,"*.cpp")
+env.add_source_files(env.drivers_sources, "*.cpp")
 
 Export('env')