diff --git a/sdk/.gitignore b/sdk/.gitignore
index b7d2960..8838f76 100644
--- a/sdk/.gitignore
+++ b/sdk/.gitignore
@@ -2,4 +2,6 @@
 #
 # SPDX-License-Identifier: CC0-1.0
 
+bin/*
+lib/*
 conf.mk
diff --git a/sdk/Makefile b/sdk/Makefile
index 7342b5c..b6e9a15 100644
--- a/sdk/Makefile
+++ b/sdk/Makefile
@@ -33,23 +33,21 @@
 
 include common.mk
 
-prefix	?= .
+prefix	?= $(shell realpath --relative-base=. $(USE_PREFIX))
 
 ifeq ($(BUILD),mingw32)
-FORCEBUILD:=1
+ FORCEBUILD	= 1
 else ifeq ($(BUILD),mingw64)
-FORCEBUILD:=1
+ FORCEBUILD	= 1
 else
-BUILD:=
-FORCEBUILD:=0
+ BUILD		=
+ FORCEBUILD	= 0
 endif
 
 ifdef $(FORCECLEAN)
-ifneq ($(FORCECLEAN),1)
-FORCECLEAN:=0
-else
-FORCECLEAN:=0
-endif
+ ifneq ($(FORCECLEAN),1)
+  FORCECLEAN	= 0
+ endif
 endif
 
 export BUILD
diff --git a/sdk/README.md b/sdk/README.md
index 26a7e92..28c98d6 100644
--- a/sdk/README.md
+++ b/sdk/README.md
@@ -24,6 +24,7 @@ Directory | Description
 `include` | Header files (`.def`, `.h` etc.) to be included in other sources (assembler, C, etc.).
 `lib` | Libraries, needed for executables (mostly in `bin` directory) to function properly.
 `src` | The source code of local and downloadable tools. See Makefiles for details.
+`windows-x86` | Compiled binaries of tools and libraries for Windows x86 (32 bit) platform.
 
 ## 1.1. Copyright and licensing information for files
 
@@ -95,12 +96,13 @@ Value of `TARGET` | Origin | Description
 `zx7b` | `src/zx7b` | zx7b
 `tools` | `src/tools` | tools
 
-Value of `BUILD` | Target system
+Value of `BUILD` | Target directory | Target system
 ----|----
-`mingw32` | Windows with i686 architecture (32-bits)
-`mingw64` | Windows with AMD64 architecture (64-bits)
+`mingw32` | `windows-x86` | Windows with i686 architecture (32-bits)
+`mingw64` | `windows-x86_64` | Windows with AMD64 architecture (64-bits)
 
-Compiled binaries are installed into `bin` sub-directory.
+Compiled binaries are installed into `bin` sub-directory of target directory.
+Compiled libraries are installed into `lib` sub-directory of target directory.
 
 Example:
 
@@ -111,7 +113,7 @@ make BUILD=mingw64 tools
 Then you may use `strip` tool to strip debug information from file and thus shrink file's size. Example:
 
 ```bash
-strip bin/*.exe
+strip windows-x86/bin/*.exe
 ```
 
 For more options see [`Makefile`](Makefile).
@@ -225,7 +227,7 @@ Value of `TARGET` | Sources origin | Binaries origin (**Quick setup**) | Build f
 Then you may use `strip` tool to strip debug information from file and thus shrink file's size. Example:
 
 ```bash
-strip bin/*.exe
+strip windows-x86/bin/*.exe
 ```
 
 For more options see [`Makefile`](Makefile).
diff --git a/sdk/bin/.gitignore b/sdk/bin/.gitignore
deleted file mode 100644
index 2c6336a..0000000
--- a/sdk/bin/.gitignore
+++ /dev/null
@@ -1,17 +0,0 @@
-# SPDX-FileCopyrightText: 2021 Ivan Tatarinov <ivan-tat@ya.ru>
-#
-# SPDX-License-Identifier: CC0-1.0
-
-sjasmplus
-sjasmplus.exe
-zx7b
-bin2hex
-fcut
-fpad
-fpoke
-rcs
-Png2Rcs
-GenTape
-GenRom
-AddItem
-Bit2Bin
diff --git a/sdk/common.mk b/sdk/common.mk
index 7ed8b64..98ed894 100644
--- a/sdk/common.mk
+++ b/sdk/common.mk
@@ -11,21 +11,38 @@
 ifndef ZXSDK
 
 ZXSDK		:= $(patsubst %/,%,$(abspath $(dir $(lastword $(MAKEFILE_LIST)))))
-Z88DK		:= $(ZXSDK)/src/z88dk
-ZCCCFG		:= $(Z88DK)/lib/config
-PATH		:= $(ZXSDK)/bin:$(Z88DK)/bin:$(PATH)
 
 ifeq ($(OS),Windows_NT)
-PATH		:= $(ZXSDK)/lib:$(PATH)
+ ifeq ($(PROCESSOR_ARCHITECTURE),X86)
+  ZXSDK_PLATFORM= $(ZXSDK)/windows-x86
+ else ifeq ($(PROCESSOR_ARCHITECTURE),AMD64)
+  ZXSDK_PLATFORM= $(ZXSDK)/windows-x86
+ else ifeq ($(PROCESSOR_ARCHITECTURE),EM64T)
+  ZXSDK_PLATFORM= $(ZXSDK)/windows-x86
+ else
+  $(warning Unsupported platform: "$(PROCESSOR_ARCHITECTURE)")
+  ZXSDK_PLATFORM= $(ZXSDK)/windows-x86
+ endif
+else
+ ZXSDK_PLATFORM	= $(ZXSDK)
+endif
+
+Z88DK		:= $(ZXSDK)/src/z88dk
+ZCCCFG		:= $(Z88DK)/lib/config
+PATH		:= $(ZXSDK_PLATFORM)/bin:$(Z88DK)/bin:$(PATH)
+
+ifeq ($(OS),Windows_NT)
+PATH		:= $(ZXSDK_PLATFORM)/lib:$(PATH)
 # Fix paths under Cygwin for z88dk on Windows
 ifeq ($(shell echo $$OSTYPE),cygwin)
 ZCCCFG		:= $(shell cygpath -m $(ZCCCFG))
 endif
 else	# $(OS)!=Windows_NT
-export LD_LIBRARY_PATH:=$(ZXSDK)/lib
+export LD_LIBRARY_PATH:=$(ZXSDK_PLATFORM)/lib
 endif	# $(OS)!=Windows_NT
 
 export ZXSDK
+export ZXSDK_PLATFORM
 export ZCCCFG
 export PATH
 
@@ -33,9 +50,6 @@ endif	# !ZXSDK
 
 -include $(ZXSDK)/conf.mk
 
-# Default values
-USE_SJASMPLUS_VERSION	?= z00m128
-
 ifeq ($(OS),Windows_NT)
 EXESUFFIX	:= .exe
 DLLSUFFIX	:= .dll
@@ -48,8 +62,14 @@ ifeq ($(BUILD),mingw32)
 CC		:= i686-w64-mingw32-gcc
 EXESUFFIX	:= .exe
 DLLSUFFIX	:= .dll
+USE_PREFIX	?= $(ZXSDK)/windows-x86
 else ifeq ($(BUILD),mingw64)
 CC		:= x86_64-w64-mingw32-gcc
 EXESUFFIX	:= .exe
 DLLSUFFIX	:= .dll
+USE_PREFIX	?= $(ZXSDK)/windows-x86_64
 endif
+
+# Default values
+USE_PREFIX		?= $(ZXSDK_PLATFORM)
+USE_SJASMPLUS_VERSION	?= z00m128
diff --git a/sdk/lib/.gitignore b/sdk/lib/.gitignore
deleted file mode 100644
index a0b38ba..0000000
--- a/sdk/lib/.gitignore
+++ /dev/null
@@ -1,5 +0,0 @@
-# SPDX-FileCopyrightText: 2021 Ivan Tatarinov <ivan-tat@ya.ru>
-#
-# SPDX-License-Identifier: CC0-1.0
-
-liblodepng.so
diff --git a/sdk/setenv.bat b/sdk/setenv.bat
index a0eb918..66bcda0 100644
--- a/sdk/setenv.bat
+++ b/sdk/setenv.bat
@@ -6,6 +6,7 @@ rem SPDX-License-Identifier: GPL-3.0-or-later
 if not x%ZXSDK% == x exit /b
 set ZXSDK=%~dp0
 set ZXSDK=%ZXSDK:~0,-1%
+set ZXSDK_PLATFORM=%ZXSDK%\windows-x86
 set Z88DK=%ZXSDK%\src\z88dk
 set ZCCCFG=%Z88DK%\lib\config
-set PATH=%ZXSDK%\bin;%Z88DK%\bin;%ZXSDK%\lib;%PATH%
+set PATH=%ZXSDK_PLATFORM%\bin;%Z88DK%\bin;%ZXSDK_PLATFORM%\lib;%PATH%
diff --git a/sdk/setenv.sh b/sdk/setenv.sh
index 0411ec8..6352b70 100644
--- a/sdk/setenv.sh
+++ b/sdk/setenv.sh
@@ -5,18 +5,24 @@
 
 if [[ "x$ZXSDK" == x ]]; then
 	ZXSDK=$(dirname $(realpath "$BASH_SOURCE"))
+	if [[ x$OS == xWindows_NT ]]; then
+		ZXSDK_PLATFORM=$ZXSDK/windows-x86
+	else
+		ZXSDK_PLATFORM=$ZXSDK
+	fi
 	Z88DK=$ZXSDK/src/z88dk
 	ZCCCFG=$Z88DK/lib/config
-	PATH=$ZXSDK/bin:$Z88DK/bin:$PATH
+	PATH=$ZXSDK_PLATFORM/bin:$Z88DK/bin:$PATH
 	if [[ x$OS == xWindows_NT ]]; then
-		PATH=$ZXSDK/lib:$PATH
+		PATH=$ZXSDK_PLATFORM/lib:$PATH
 		# Fix paths under Cygwin for z88dk on Windows
 		if [[ x$OSTYPE == xcygwin ]]; then
 			ZCCCFG=`cygpath -m $ZCCCFG`
 		fi
 	else
-		export LD_LIBRARY_PATH=$ZXSDK/lib
+		export LD_LIBRARY_PATH=$ZXSDK_PLATFORM/lib
 	fi
 	export ZXSDK
+	export ZXSDK_PLATFORM
 	export ZCCCFG
 fi
diff --git a/sdk/src/Makefile b/sdk/src/Makefile
index 86ef448..4c39ec9 100644
--- a/sdk/src/Makefile
+++ b/sdk/src/Makefile
@@ -29,7 +29,7 @@
 
 include ../common.mk
 
-prefix		?= ..
+prefix		?= $(shell realpath --relative-base=. $(USE_PREFIX))
 exec_prefix	?= $(prefix)
 bindir		?= $(exec_prefix)/bin
 
@@ -51,24 +51,27 @@ uninstall: $(foreach t,$(TARGETS),uninstall-$(t))
 clean: $(foreach t,$(TARGETS),clean-$(t))
 distclean: $(foreach t,$(TARGETS),distclean-$(t))
 
-_DoBuild:=1
-_UsePrecompiledOnWindows:=0
-_DoClean:=1
+_DoBuild			= 1
+_UsePrecompiledOnWindows	= 0
+_DoClean			= 1
 
 ifeq ($(OS),Windows_NT)
-ifneq ($(FORCEBUILD),1)
-_DoBuild:=0
-_UsePrecompiledOnWindows:=1
-endif
-ifneq ($(FORCECLEAN),1)
-_DoClean:=0
-endif
+ ifneq ($(FORCEBUILD),1)
+  _DoBuild			= 0
+  _UsePrecompiledOnWindows	= 1
+ endif
+ ifneq ($(FORCECLEAN),1)
+  _DoClean			= 0
+ endif
 endif	# $(OS)==Windows_NT
 
 # sjasmplus
 
 .PHONY: $(foreach a,build install uninstall clean distclean,$(a)-sjasmplus)
 
+$(DESTDIR)$(bindir):
+	mkdir -p $@
+
 ifeq ($(USE_SJASMPLUS_VERSION),sjasmplus)
 
 ifeq ($(_DoBuild),1)
@@ -140,7 +143,7 @@ sjasmplus-win64.7z:
 
 install-sjasmplus: $(DESTDIR)$(bindir)/sjasmplus$(EXESUFFIX)
 
-$(DESTDIR)$(bindir)/sjasmplus$(EXESUFFIX): sjasmplus/sjasmplus$(EXESUFFIX)
+$(DESTDIR)$(bindir)/sjasmplus$(EXESUFFIX): sjasmplus/sjasmplus$(EXESUFFIX) | $(DESTDIR)$(bindir)
 	$(INSTALL_PROGRAM) $< $@
 
 ifeq ($(_DoClean),1)
@@ -239,7 +242,7 @@ sjasmplus-z00m128-win32.zip:
 
 install-sjasmplus: $(DESTDIR)$(bindir)/sjasmplus$(EXESUFFIX)
 
-$(DESTDIR)$(bindir)/sjasmplus$(EXESUFFIX): sjasmplus-z00m128/sjasmplus$(EXESUFFIX)
+$(DESTDIR)$(bindir)/sjasmplus$(EXESUFFIX): sjasmplus-z00m128/sjasmplus$(EXESUFFIX) | $(DESTDIR)$(bindir)
 	$(INSTALL_PROGRAM) $< $@
 
 ifeq ($(_DoClean),1)
diff --git a/sdk/src/sjasmplus-z00m128.mk b/sdk/src/sjasmplus-z00m128.mk
index 404e428..4cdf0c7 100644
--- a/sdk/src/sjasmplus-z00m128.mk
+++ b/sdk/src/sjasmplus-z00m128.mk
@@ -26,6 +26,7 @@ bindir		?= $(exec_prefix)/bin
 
 INSTALL		?= install
 INSTALL_PROGRAM	?= $(INSTALL)
+RM		?= rm -f
 
 BINS		= sjasmplus$(EXESUFFIX)
 
@@ -36,7 +37,7 @@ build\
 $(DESTDIR)$(bindir):
 	mkdir -p $@
 
-sjasmplus$(EXESUFFIX): | Makefile
+$(srcdir)/sjasmplus$(EXESUFFIX): | Makefile
 	$(MAKE) clean
 	$(MAKE)
 
@@ -48,7 +49,7 @@ $(DESTDIR)$(bindir)/sjasmplus$(EXESUFFIX): sjasmplus$(EXESUFFIX) | $(DESTDIR)$(b
 
 .PHONY: uninstall
 uninstall:
-	rm -f $(foreach t,$(BINS),$(DESTDIR)$(bindir)/$(t))
+	$(RM) $(foreach t,$(BINS),$(DESTDIR)$(bindir)/$(t))
 
 .PHONY: clean
 clean:
diff --git a/sdk/bin/AddItem.exe b/sdk/windows-x86/bin/AddItem.exe
similarity index 100%
rename from sdk/bin/AddItem.exe
rename to sdk/windows-x86/bin/AddItem.exe
diff --git a/sdk/bin/AddItem.exe.license b/sdk/windows-x86/bin/AddItem.exe.license
similarity index 100%
rename from sdk/bin/AddItem.exe.license
rename to sdk/windows-x86/bin/AddItem.exe.license
diff --git a/sdk/bin/Bit2Bin.exe b/sdk/windows-x86/bin/Bit2Bin.exe
similarity index 100%
rename from sdk/bin/Bit2Bin.exe
rename to sdk/windows-x86/bin/Bit2Bin.exe
diff --git a/sdk/bin/Bit2Bin.exe.license b/sdk/windows-x86/bin/Bit2Bin.exe.license
similarity index 100%
rename from sdk/bin/Bit2Bin.exe.license
rename to sdk/windows-x86/bin/Bit2Bin.exe.license
diff --git a/sdk/bin/GenRom.exe b/sdk/windows-x86/bin/GenRom.exe
similarity index 100%
rename from sdk/bin/GenRom.exe
rename to sdk/windows-x86/bin/GenRom.exe
diff --git a/sdk/bin/GenRom.exe.license b/sdk/windows-x86/bin/GenRom.exe.license
similarity index 100%
rename from sdk/bin/GenRom.exe.license
rename to sdk/windows-x86/bin/GenRom.exe.license
diff --git a/sdk/bin/GenTape.exe b/sdk/windows-x86/bin/GenTape.exe
similarity index 100%
rename from sdk/bin/GenTape.exe
rename to sdk/windows-x86/bin/GenTape.exe
diff --git a/sdk/bin/GenTape.exe.license b/sdk/windows-x86/bin/GenTape.exe.license
similarity index 100%
rename from sdk/bin/GenTape.exe.license
rename to sdk/windows-x86/bin/GenTape.exe.license
diff --git a/sdk/bin/Png2Rcs.exe b/sdk/windows-x86/bin/Png2Rcs.exe
similarity index 100%
rename from sdk/bin/Png2Rcs.exe
rename to sdk/windows-x86/bin/Png2Rcs.exe
diff --git a/sdk/bin/Png2Rcs.exe.license b/sdk/windows-x86/bin/Png2Rcs.exe.license
similarity index 100%
rename from sdk/bin/Png2Rcs.exe.license
rename to sdk/windows-x86/bin/Png2Rcs.exe.license
diff --git a/sdk/bin/bin2hex.exe b/sdk/windows-x86/bin/bin2hex.exe
similarity index 100%
rename from sdk/bin/bin2hex.exe
rename to sdk/windows-x86/bin/bin2hex.exe
diff --git a/sdk/bin/bin2hex.exe.license b/sdk/windows-x86/bin/bin2hex.exe.license
similarity index 100%
rename from sdk/bin/bin2hex.exe.license
rename to sdk/windows-x86/bin/bin2hex.exe.license
diff --git a/sdk/bin/dzx7b.exe b/sdk/windows-x86/bin/dzx7b.exe
similarity index 100%
rename from sdk/bin/dzx7b.exe
rename to sdk/windows-x86/bin/dzx7b.exe
diff --git a/sdk/bin/dzx7b.exe.license b/sdk/windows-x86/bin/dzx7b.exe.license
similarity index 87%
rename from sdk/bin/dzx7b.exe.license
rename to sdk/windows-x86/bin/dzx7b.exe.license
index 331be09..b4469d1 100644
--- a/sdk/bin/dzx7b.exe.license
+++ b/sdk/windows-x86/bin/dzx7b.exe.license
@@ -6,6 +6,6 @@ SPDX-FileChecksum: SHA1: 1c1d766371864e10bfb5c95fa57d7598e8a6bf89
 
 SPDX-FileCopyrightText: Copyright (c) 2015 Einar Saukas. All rights reserved.
 
-SPDX-License-Identifier: BSD-3-clause
+SPDX-License-Identifier: BSD-3-Clause
 
 SPDX-FileComment: dzx7b version 1.0 (2015) - LZ77/LZSS backwards decompressor.
diff --git a/sdk/bin/fcut.exe b/sdk/windows-x86/bin/fcut.exe
similarity index 100%
rename from sdk/bin/fcut.exe
rename to sdk/windows-x86/bin/fcut.exe
diff --git a/sdk/bin/fcut.exe.license b/sdk/windows-x86/bin/fcut.exe.license
similarity index 100%
rename from sdk/bin/fcut.exe.license
rename to sdk/windows-x86/bin/fcut.exe.license
diff --git a/sdk/bin/fpad.exe b/sdk/windows-x86/bin/fpad.exe
similarity index 100%
rename from sdk/bin/fpad.exe
rename to sdk/windows-x86/bin/fpad.exe
diff --git a/sdk/bin/fpad.exe.license b/sdk/windows-x86/bin/fpad.exe.license
similarity index 100%
rename from sdk/bin/fpad.exe.license
rename to sdk/windows-x86/bin/fpad.exe.license
diff --git a/sdk/bin/fpoke.exe b/sdk/windows-x86/bin/fpoke.exe
similarity index 100%
rename from sdk/bin/fpoke.exe
rename to sdk/windows-x86/bin/fpoke.exe
diff --git a/sdk/bin/fpoke.exe.license b/sdk/windows-x86/bin/fpoke.exe.license
similarity index 100%
rename from sdk/bin/fpoke.exe.license
rename to sdk/windows-x86/bin/fpoke.exe.license
diff --git a/sdk/bin/rcs.exe b/sdk/windows-x86/bin/rcs.exe
similarity index 100%
rename from sdk/bin/rcs.exe
rename to sdk/windows-x86/bin/rcs.exe
diff --git a/sdk/bin/rcs.exe.license b/sdk/windows-x86/bin/rcs.exe.license
similarity index 100%
rename from sdk/bin/rcs.exe.license
rename to sdk/windows-x86/bin/rcs.exe.license
diff --git a/sdk/bin/zx7b.exe b/sdk/windows-x86/bin/zx7b.exe
similarity index 100%
rename from sdk/bin/zx7b.exe
rename to sdk/windows-x86/bin/zx7b.exe
diff --git a/sdk/bin/zx7b.exe.license b/sdk/windows-x86/bin/zx7b.exe.license
similarity index 100%
rename from sdk/bin/zx7b.exe.license
rename to sdk/windows-x86/bin/zx7b.exe.license
diff --git a/sdk/lib/liblodepng.dll b/sdk/windows-x86/lib/liblodepng.dll
similarity index 100%
rename from sdk/lib/liblodepng.dll
rename to sdk/windows-x86/lib/liblodepng.dll
diff --git a/sdk/lib/liblodepng.dll.license b/sdk/windows-x86/lib/liblodepng.dll.license
similarity index 100%
rename from sdk/lib/liblodepng.dll.license
rename to sdk/windows-x86/lib/liblodepng.dll.license