diff --git a/stockfish-dd-src/src/Makefile b/stockfish-dd-src/src/Makefile
index 0a49ac5..0fadf1d 100644
--- a/stockfish-dd-src/src/Makefile
+++ b/stockfish-dd-src/src/Makefile
@@ -43,6 +43,9 @@ OBJS = benchmark.o bitbase.o bitboard.o book.o endgame.o evaluate.o main.o \
 	material.o misc.o movegen.o movepick.o notation.o pawns.o position.o \
 	search.o thread.o timeman.o tt.o uci.o ucioption.o
 
+# libraries
+LIBS += -lpthread
+
 ### ==========================================================================
 ### Section 2. High-level Configuration
 ### ==========================================================================
@@ -50,8 +53,6 @@ OBJS = benchmark.o bitbase.o bitboard.o book.o endgame.o evaluate.o main.o \
 # flag                --- Comp switch --- Description
 # ----------------------------------------------------------------------------
 #
-# debug = yes/no      --- -DNDEBUG         --- Enable/Disable debug mode
-# optimize = yes/no   --- (-O3/-fast etc.) --- Enable/Disable optimizations
 # arch = (name)       --- (-arch)          --- Target architecture
 # os = (name)         ---                  --- Target operating system
 # bits = 64/32        --- -DIS_64BIT       --- 64-/32-bit operating system
@@ -65,9 +66,6 @@ OBJS = benchmark.o bitbase.o bitboard.o book.o endgame.o evaluate.o main.o \
 # or modifying existing flags, you have to make sure there are no extra spaces
 # at the end of the line for flag values.
 
-### 2.1. General
-debug = no
-optimize = yes
 
 ### 2.2 Architecture specific
 
@@ -200,145 +198,6 @@ endif
 ### Section 3. Low-level configuration
 ### ==========================================================================
 
-### 3.1 Selecting compiler (default = gcc)
-ifeq ($(COMP),)
-	COMP=gcc
-endif
-
-ifeq ($(COMP),mingw)
-	comp=mingw
-	CXX=g++
-	profile_prepare = gcc-profile-prepare
-	profile_make = gcc-profile-make
-	profile_use = gcc-profile-use
-	profile_clean = gcc-profile-clean
-endif
-
-ifeq ($(COMP),gcc)
-	comp=gcc
-	CXX=g++
-	profile_prepare = gcc-profile-prepare
-	profile_make = gcc-profile-make
-	profile_use = gcc-profile-use
-	profile_clean = gcc-profile-clean
-endif
-
-ifeq ($(COMP),icc)
-	comp=icc
-	CXX=icpc
-	profile_prepare = icc-profile-prepare
-	profile_make = icc-profile-make
-	profile_use = icc-profile-use
-	profile_clean = icc-profile-clean
-endif
-
-ifeq ($(COMP),clang)
-	comp=clang
-	CXX=clang++
-	profile_prepare = gcc-profile-prepare
-	profile_make = gcc-profile-make
-	profile_use = gcc-profile-use
-	profile_clean = gcc-profile-clean
-endif
-
-### 3.2 General compiler settings
-CXXFLAGS = -Wall -Wcast-qual -fno-exceptions -fno-rtti $(EXTRACXXFLAGS)
-
-ifeq ($(comp),gcc)
-	CXXFLAGS += -ansi -pedantic -Wno-long-long -Wextra -Wshadow
-endif
-
-ifeq ($(comp),mingw)
-	CXXFLAGS += -Wextra -Wshadow
-endif
-
-ifeq ($(comp),icc)
-	CXXFLAGS += -diag-disable 1476,10120 -Wcheck -Wabi -Wdeprecated -strict-ansi
-endif
-
-ifeq ($(comp),clang)
-	CXXFLAGS += -ansi -pedantic -Wno-long-long -Wextra -Wshadow
-endif
-
-ifeq ($(os),osx)
-	CXXFLAGS += -arch $(arch) -mmacosx-version-min=10.0
-endif
-
-### 3.3 General linker settings
-LDFLAGS = $(EXTRALDFLAGS)
-
-ifeq ($(comp),mingw)
-	LDFLAGS += -static-libstdc++ -static-libgcc
-endif
-
-### On mingw use Windows threads, otherwise POSIX
-ifneq ($(comp),mingw)
-	# On Android Bionic's C library comes with its own pthread implementation bundled in
-	ifneq ($(arch),armv7)
-		# Haiku has pthreads in its libroot, so only link it in on other platforms
-		ifneq ($(UNAME),Haiku)
-			LDFLAGS += -lpthread
-		endif
-	endif
-endif
-
-ifeq ($(os),osx)
-	LDFLAGS += -arch $(arch) -mmacosx-version-min=10.0
-endif
-
-### 3.4 Debugging
-ifeq ($(debug),no)
-	CXXFLAGS += -DNDEBUG
-else
-	CXXFLAGS += -g
-endif
-
-### 3.5 Optimization
-ifeq ($(optimize),yes)
-
-	ifeq ($(comp),gcc)
-		CXXFLAGS += -O3
-
-		ifeq ($(os),osx)
-			ifeq ($(arch),i386)
-				CXXFLAGS += -mdynamic-no-pic
-			endif
-			ifeq ($(arch),x86_64)
-				CXXFLAGS += -mdynamic-no-pic
-			endif
-		endif
-
-		ifeq ($(arch),armv7)
-			CXXFLAGS += -fno-gcse -mthumb -march=armv7-a -mfloat-abi=softfp
-		endif
-	endif
-
-	ifeq ($(comp),mingw)
-		CXXFLAGS += -O3
-	endif
-
-	ifeq ($(comp),icc)
-		ifeq ($(os),osx)
-			CXXFLAGS += -fast -mdynamic-no-pic
-		else
-			CXXFLAGS += -fast
-		endif
-	endif
-
-	ifeq ($(comp),clang)
-		### -O4 requires a linker that supports LLVM's LTO
-		CXXFLAGS += -O3
-
-		ifeq ($(os),osx)
-			ifeq ($(arch),i386)
-				CXXFLAGS += -mdynamic-no-pic
-			endif
-			ifeq ($(arch),x86_64)
-				CXXFLAGS += -mdynamic-no-pic
-			endif
-		endif
-	endif
-endif
 
 ### 3.6. Bits
 ifeq ($(bits),64)
@@ -365,21 +224,6 @@ ifeq ($(popcnt),yes)
 	CXXFLAGS += -msse3 -DUSE_POPCNT
 endif
 
-### 3.10 Link Time Optimization, it works since gcc 4.5 but not on mingw.
-### This is a mix of compile and link time options because the lto link phase
-### needs access to the optimization flags.
-ifeq ($(comp),gcc)
-	ifeq ($(optimize),yes)
-	ifeq ($(debug),no)
-		GCC_MAJOR := `$(CXX) -dumpversion | cut -f1 -d.`
-		GCC_MINOR := `$(CXX) -dumpversion | cut -f2 -d.`
-		ifeq (1,$(shell expr \( $(GCC_MAJOR) \> 4 \) \| \( $(GCC_MAJOR) \= 4 \& $(GCC_MINOR) \>= 5 \)))
-			CXXFLAGS += -flto
-			LDFLAGS += $(CXXFLAGS)
-		endif
-	endif
-	endif
-endif
 
 ### ==========================================================================
 ### Section 4. Public targets
@@ -397,7 +241,6 @@ help:
 	@echo "signature-build         > Standard build with embedded signature"
 	@echo "profile-build           > PGO build"
 	@echo "signature-profile-build > PGO build with embedded signature"
-	@echo "strip                   > Strip executable"
 	@echo "install                 > Install executable"
 	@echo "clean                   > Clean up"
 	@echo ""
@@ -470,13 +313,9 @@ signature-build: build embed-signature
 
 signature-profile-build: build embed-signature profile-build
 
-strip:
-	strip $(EXE)
-
 install:
 	-mkdir -p -m 755 $(BINDIR)
 	-cp $(EXE) $(BINDIR)
-	-strip $(BINDIR)/$(EXE)
 
 clean:
 	$(RM) $(EXE) $(EXE).exe *.o .depend *~ core bench.txt *.gcda
@@ -493,8 +332,6 @@ all: $(EXE) .depend
 config-sanity:
 	@echo ""
 	@echo "Config:"
-	@echo "debug: '$(debug)'"
-	@echo "optimize: '$(optimize)'"
 	@echo "arch: '$(arch)'"
 	@echo "os: '$(os)'"
 	@echo "bits: '$(bits)'"
@@ -508,60 +345,12 @@ config-sanity:
 	@echo "CXXFLAGS: $(CXXFLAGS)"
 	@echo "LDFLAGS: $(LDFLAGS)"
 	@echo ""
-	@echo "Testing config sanity. If this fails, try 'make help' ..."
-	@echo ""
-	@test "$(debug)" = "yes" || test "$(debug)" = "no"
-	@test "$(optimize)" = "yes" || test "$(optimize)" = "no"
-	@test "$(arch)" = "any" || test "$(arch)" = "x86_64" || test "$(arch)" = "i386" || \
-	 test "$(arch)" = "ppc64" || test "$(arch)" = "ppc" || test "$(arch)" = "armv7"
-	@test "$(os)" = "any" || test "$(os)" = "osx"
-	@test "$(bits)" = "32" || test "$(bits)" = "64"
-	@test "$(prefetch)" = "yes" || test "$(prefetch)" = "no"
-	@test "$(bsfq)" = "yes" || test "$(bsfq)" = "no"
-	@test "$(popcnt)" = "yes" || test "$(popcnt)" = "no"
-	@test "$(sse)" = "yes" || test "$(sse)" = "no"
-	@test "$(comp)" = "gcc" || test "$(comp)" = "icc" || test "$(comp)" = "mingw" || test "$(comp)" = "clang"
 
 $(EXE): $(OBJS)
-	$(CXX) -o $@ $(OBJS) $(LDFLAGS)
-
-gcc-profile-prepare:
-	$(MAKE) ARCH=$(ARCH) COMP=$(COMP) gcc-profile-clean
-
-gcc-profile-make:
-	$(MAKE) ARCH=$(ARCH) COMP=$(COMP) \
-	EXTRACXXFLAGS='-fprofile-generate' \
-	EXTRALDFLAGS='-lgcov' \
-	all
-
-gcc-profile-use:
-	$(MAKE) ARCH=$(ARCH) COMP=$(COMP) \
-	EXTRACXXFLAGS='-fprofile-use' \
-	EXTRALDFLAGS='-lgcov' \
-	all
-
-gcc-profile-clean:
-	@rm -rf *.gcda *.gcno bench.txt
-
-icc-profile-prepare:
-	$(MAKE) ARCH=$(ARCH) COMP=$(COMP) icc-profile-clean
-	@mkdir profdir
-
-icc-profile-make:
-	$(MAKE) ARCH=$(ARCH) COMP=$(COMP) \
-	EXTRACXXFLAGS='-prof-gen=srcpos -prof_dir ./profdir' \
-	all
-
-icc-profile-use:
-	$(MAKE) ARCH=$(ARCH) COMP=$(COMP) \
-	EXTRACXXFLAGS='-prof_use -prof_dir ./profdir' \
-	all
-
-icc-profile-clean:
-	@rm -rf profdir bench.txt
+	$(CXX) $(CXXFLAGS) -o $@ $(OBJS) $(LDFLAGS) $(LIBS)
 
 .depend:
-	-@$(CXX) $(DEPENDFLAGS) -MM $(OBJS:.o=.cpp) > $@ 2> /dev/null
+	-@$(CXX) $(CXXFLAGS) $(DEPENDFLAGS) -MM $(OBJS:.o=.cpp) > $@ 2> /dev/null
 
 -include .depend