diff --git a/.gitignore b/.gitignore
index a6f4eff7..a62b3d4b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -16,3 +16,6 @@ scripts/opjstyle*
 
 # Ignore directories made by `make`.
 /bin/
+build
+SDK
+*.lha
diff --git a/Makefile.os4 b/Makefile.os4
new file mode 100644
index 00000000..b6b66f74
--- /dev/null
+++ b/Makefile.os4
@@ -0,0 +1,55 @@
+
+USE_CLIB2=YES
+ifeq ($(USE_CLIB2), YES)
+LIBC=clib2
+CODEC=OFF
+else
+LIBC=newlib
+CODEC=ON
+endif
+
+all: build
+
+build: 
+	mkdir build && \
+	cd build && \
+	cmake .. -DCMAKE_BUILD_TYPE=Release \
+		-DCMAKE_CROSSCOMPILING=ON \
+		-DCMAKE_TOOLCHAIN_FILE=$(realpath amigaos4.cmake) \
+		-DCMAKE_C_FLAGS="-mcrt=${LIBC} -O2 -fPIC" \
+		-DCMAKE_MODULE_LINKER_FLAGS="-mcrt=${LIBC} -lpthread -athread=native" \
+		-DBUILD_TESTING=OFF \
+		-DBUILD_CODEC=${CODEC} \
+		-DBUILD_SHARED_LIBS=OFF && \
+	make
+
+clean:
+	@echo "Clean the build"
+	@rm -rf build
+
+cleanall: clean
+	@echo "Clean the build and the release files"
+	@rm -rf SDK
+	@rm libopenjpeg.lha
+
+release:
+	@echo "Create release folders..."
+	@mkdir -p SDK/local/common/include
+	@mkdir -p SDK/local/clib2/lib
+	@mkdir -p SDK/local/newlib/lib SDK/local/newlib/bin
+
+	@echo "Building clib2 based libraries..."
+	@make -f Makefile.os4 USE_CLIB2=YES
+	@cp ./build/bin/libopenjp2.a SDK/local/clib2/lib/
+	@cp ./src/lib/openjp2/openjpeg.h SDK/local/common/include/
+
+	@echo "Clean build and libraries files..."
+	@make -f Makefile.os4 clean
+	
+	@echo "Building newlib based libraries..."
+	@make -f Makefile.os4 USE_CLIB2=NO
+	@cp ./build/bin/libopenjp2.a SDK/local/newlib/lib/
+	@cp ./build/bin/opj_* SDK/local/newlib/bin/
+
+	@echo "Creating the lha release file..."
+	@lha -aeq libopenjpeg.lha SDK/
\ No newline at end of file
diff --git a/amigaos4.cmake b/amigaos4.cmake
new file mode 100644
index 00000000..2a95eb6c
--- /dev/null
+++ b/amigaos4.cmake
@@ -0,0 +1,9 @@
+SET(CMAKE_SYSTEM_NAME Generic)
+SET(CMAKE_SYSTEM_PROCESSOR ppc)
+SET(CMAKE_C_COMPILER /opt/ppc-amigaos/bin/ppc-amigaos-gcc)
+SET(CMAKE_CXX_COMPILER /opt/ppc-amigaos/bin/ppc-amigaos-g++)
+SET(CMAKE_FIND_LIBRARY_SUFFIXES "*.a")
+SET(CMAKE_FIND_ROOT_PATH /opt/sdk)
+SET(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
+SET(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
+SET(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
diff --git a/src/lib/openjp2/opj_includes.h b/src/lib/openjp2/opj_includes.h
index 0a8628c9..a4377cf2 100644
--- a/src/lib/openjp2/opj_includes.h
+++ b/src/lib/openjp2/opj_includes.h
@@ -44,7 +44,11 @@
    Standard includes used by the library
  ==========================================================
 */
+#if defined(__amigaos4__)
+#include <exec/memory.h>
+#else
 #include <memory.h>
+#endif
 #include <stdlib.h>
 #include <string.h>
 #include <math.h>