Update to makefiles to support ChibiOS v3, making ARM thumb targets, CPU specific flags etc

Also put license in the gmake master scripts.

8 files changed, 241 insertions, 86 deletions

diff --git a/tools/gmake_scripts/compiler_gcc.mk b/tools/gmake_scripts/compiler_gcc.mk
index 196e5d5a..bc3c216b 100644
--- a/tools/gmake_scripts/compiler_gcc.mk
+++ b/tools/gmake_scripts/compiler_gcc.mk
@@ -1,24 +1,33 @@
+#
+# This file is subject to the terms of the GFX License. If a copy of
+# the license was not distributed with this file, you can obtain one at:
+#
+#             http://ugfx.org/license.html
+#
+
+#
 # See readme.txt for the make API
+#
 
 ifeq ($(basename $(OPT_OS)),win32)
-	# Nasty - must convert all paths into a format make can handle
-	PATHEXPAND := ARCH XCC XCXX XAS XLD XOC XOD PROJECT BUILDDIR SRC DEFS LIBS INCPATH LIBPATH $(PATHLIST)
-	
-	# First convert \'s to /'s
-    $(foreach var,$(PATHEXPAND),$(eval $(var):=$$(subst \,/,$($(var)))))
-    
-	# For cygwin gmake - need to convert all absolute paths (mingw gmake doesn't need this)
-	ifneq ($(findstring cygdrive,$(PATH)),)
-		DRIVELETTERS := a b c d e f g h i j k l m n o p q r s t u v w x y z A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
-        $(foreach drv,$(DRIVELETTERS),$(foreach var,$(PATHEXPAND),$(eval $(var):=$$(patsubst $(drv):%,/cygdrive/$(drv)%,$($(var))))))
-	endif
+  # Nasty - must convert all paths into a format make can handle
+  PATHEXPAND := ARCH XCC XCXX XAS XLD XOC XOD XSZ PROJECT BUILDDIR SRC DEFS LIBS INCPATH LIBPATH $(PATHLIST)
+
+  # First convert \'s to /'s
+  $(foreach var,$(PATHEXPAND),$(eval $(var):=$$(subst \,/,$($(var)))))
+
+  # For cygwin gmake - need to convert all absolute paths (mingw gmake doesn't need this)
+  ifneq ($(findstring cygdrive,$(PATH)),)
+    DRIVELETTERS := a b c d e f g h i j k l m n o p q r s t u v w x y z A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
+    $(foreach drv,$(DRIVELETTERS),$(foreach var,$(PATHEXPAND),$(eval $(var):=$$(patsubst $(drv):%,/cygdrive/$(drv)%,$($(var))))))
+  endif
 endif
 
 # Path resolution - Functions to convert a source path to a object path and visa-versa
 src_obj_fn := $$(1)
 obj_src_fn := $$(1)
-$(foreach var,$(PATHLIST),$(eval obj_src_fn := $$$$(patsubst $(var)/%,$$$$($(var))/%,$$(obj_src_fn)))) 
-$(foreach var,$(PATHLIST),$(eval src_obj_fn := $$$$(patsubst $$$$($(var))/%,$(var)/%,$$(src_obj_fn)))) 
+$(foreach var,$(PATHLIST),$(eval obj_src_fn := $$$$(patsubst $(var)/%,$$$$($(var))/%,$$(obj_src_fn))))
+$(foreach var,$(PATHLIST),$(eval src_obj_fn := $$$$(patsubst $$$$($(var))/%,$(var)/%,$$(src_obj_fn))))
 src_obj_fn := $$(subst :,_drv_drv_,$$(subst ../,_dot_dot/,$(src_obj_fn)))
 obj_src_fn := $$(subst _drv_drv_,:,$$(subst _dot_dot/,../,$(obj_src_fn)))
 $(eval src_obj=$(src_obj_fn))
@@ -26,122 +35,188 @@ $(eval obj_src=$(obj_src_fn))
 
 # Add ARCH to each of the compiler programs
 ifeq ($(XCC),)
-	XCC = $(ARCH)gcc
+  XCC = $(ARCH)gcc
 endif
 ifeq ($(XCXX),)
-	XCXX = $(ARCH)g++
+  XCXX = $(ARCH)g++
 endif
 ifeq ($(XAS),)
-	XAS = $(ARCH)gcc -x assembler-with-cpp
+  XAS = $(ARCH)gcc -x assembler-with-cpp
 endif
 ifeq ($(XLD),)
-	XLD = $(ARCH)gcc
+  XLD = $(ARCH)gcc
 endif
 ifeq ($(XOC),)
-	XOC = $(ARCH)objcopy
+  XOC = $(ARCH)objcopy
 endif
 ifeq ($(XOD),)
-	XOD = $(ARCH)objdump
+  XOD = $(ARCH)objdump
 endif
+ifeq ($(XSZ),)
+  XSZ = $(ARCH)size
+ endif
 
 # Default project name is the project directory name
 ifeq ($(PROJECT),)
-	ifneq ($(firstword $(abspath $(firstword $(MAKEFILE_LIST)))),$(lastword $(abspath $(firstword $(MAKEFILE_LIST)))))
-        $(error Your directory contains spaces. Gmake barfs at that. Please define PROJECT)
-	endif
-	PROJECT := $(notdir $(patsubst %/,%,$(dir $(abspath $(firstword $(MAKEFILE_LIST))))))
+  ifneq ($(firstword $(abspath $(firstword $(MAKEFILE_LIST)))),$(lastword $(abspath $(firstword $(MAKEFILE_LIST)))))
+    $(error Your directory contains spaces. Gmake barfs at that. Please define PROJECT)
+  endif
+  PROJECT := $(notdir $(patsubst %/,%,$(dir $(abspath $(firstword $(MAKEFILE_LIST))))))
 endif
 
 # Output directories
 ifeq ($(BUILDDIR),)
-	ifeq ($(MAKECMDGOALS),Debug)
-	  BUILDDIR = bin/Debug
-	endif
-	ifeq ($(MAKECMDGOALS),Release)
-	  BUILDDIR = bin/Release
-	endif
-	ifeq ($(MAKECMDGOALS),cleanDebug)
-	  BUILDDIR = bin/Debug
-	endif
-	ifeq ($(MAKECMDGOALS),cleanRelease)
-	  BUILDDIR = bin/Release
-	endif
-	ifeq ($(BUILDDIR),)
-	  BUILDDIR = .build
-	endif
+  ifeq ($(MAKECMDGOALS),Debug)
+    BUILDDIR = bin/Debug
+  endif
+  ifeq ($(MAKECMDGOALS),Release)
+    BUILDDIR = bin/Release
+  endif
+  ifeq ($(MAKECMDGOALS),cleanDebug)
+    BUILDDIR = bin/Debug
+  endif
+  ifeq ($(MAKECMDGOALS),cleanRelease)
+    BUILDDIR = bin/Release
+  endif
+  ifeq ($(BUILDDIR),)
+    BUILDDIR = .build
+  endif
 endif
 OBJDIR  = $(BUILDDIR)/obj
 DEPDIR  = $(BUILDDIR)/dep
 
 # Output files
 MAPFILE = $(BUILDDIR)/$(PROJECT).map
+FAKEFILE= fakefile.o
 EXEFILE =
 ifeq ($(basename $(OPT_OS)),win32)
-	EXEFILE = $(BUILDDIR)/$(PROJECT).exe
-	TARGETS = $(EXEFILE)
+  EXEFILE = $(BUILDDIR)/$(PROJECT).exe
+  TARGETS = $(EXEFILE)
 endif
 ifeq ($(basename $(OPT_OS)),linux)
-	EXEFILE = $(BUILDDIR)/$(PROJECT)
-	TARGETS = $(EXEFILE)
+  EXEFILE = $(BUILDDIR)/$(PROJECT)
+  TARGETS = $(EXEFILE)
 endif
 ifeq ($(basename $(OPT_OS)),osx)
-	EXEFILE = $(BUILDDIR)/$(PROJECT)
-	TARGETS = $(EXEFILE)
+  EXEFILE = $(BUILDDIR)/$(PROJECT)
+  TARGETS = $(EXEFILE)
 endif
 ifeq ($(EXEFILE),)
-	LDFLAGS += -nostartfiles
-	EXEFILE = $(BUILDDIR)/$(PROJECT).elf
-	TARGETS = $(EXEFILE) $(BUILDDIR)/$(PROJECT).hex $(BUILDDIR)/$(PROJECT).bin $(BUILDDIR)/$(PROJECT).dmp
+  LDFLAGS += -nostartfiles
+  EXEFILE = $(BUILDDIR)/$(PROJECT).elf
+  TARGETS = $(EXEFILE) $(BUILDDIR)/$(PROJECT).hex $(BUILDDIR)/$(PROJECT).bin $(BUILDDIR)/$(PROJECT).dmp elfstats
 endif
 
-# Combine all our compiler arguments
-SRCFLAGS += -I. $(patsubst %,-I%,$(INCPATH)) $(patsubst %,-D%,$(patsubst -D%,%,$(DEFS)))
-LDFLAGS  += $(patsubst %,-L%,$(LIBPATH)) $(patsubst %,-l%,$(patsubst -l%,%,$(LIBS)))
-OBJS	  = $(addprefix $(OBJDIR)/,$(call src_obj,$(addsuffix .o,$(basename $(SRC)))))
+# Generate our object file lists
+OBJS_THUMB	   += $(addprefix $(OBJDIR)/,$(call src_obj,$(addsuffix .o,$(basename $(SRC_THUMB)))))
+OBJS_NOTHUMB   += $(addprefix $(OBJDIR)/,$(call src_obj,$(addsuffix .o,$(basename $(SRC_NOTHUMB)))))
+ifeq ($(OPT_THUMB),yes)
+  OBJS_THUMB   += $(OBJS) $(addprefix $(OBJDIR)/,$(call src_obj,$(addsuffix .o,$(basename $(SRC)))))
+else
+  OBJS_NOTHUMB += $(OBJS) $(addprefix $(OBJDIR)/,$(call src_obj,$(addsuffix .o,$(basename $(SRC)))))
+endif
+ifneq ($(OBJS_THUMB),)
+  ifneq ($(OBJS_NOTHUMB),)
+    # Mixed ARM and THUMB mode - enabled only if needed because it kills performance.
+    SRCFLAGS += -mthumb-interwork
+    LDFLAGS  += -mthumb-interwork
+    DEFS     += THUMB_PRESENT
+  else
+    # Pure THUMB mode, THUMB C code cannot be called by ARM asm code directly.
+    LDFLAGS  += -mthumb
+    DEFS     += THUMB_PRESENT THUMB_NO_INTERWORKING
+	FAKEFILE= fakethumbfile.o
+  endif
+endif
 
 # Handle make API options that affect compiler arguments
 ifneq ($(OPT_NONSTANDARD_FLAGS),yes)
-	SRCFLAGS += -fomit-frame-pointer -Wall -Wextra -Wstrict-prototypes -fverbose-asm
+  SRCFLAGS += -fomit-frame-pointer -Wall -Wextra -Wstrict-prototypes -fverbose-asm
 endif
 ifeq ($(OPT_LINK_OPTIMIZE),yes)
-	SRCFLAGS += -ffunction-sections -fdata-sections
+  SRCFLAGS += -ffunction-sections -fdata-sections -fno-common -flto
 endif
 ifeq ($(OPT_GENERATE_MAP),yes)
-	ifeq ($(OPT_LINK_OPTIMIZE),yes)
-		LDFLAGS += -Wl,-Map=$(MAPFILE),--cref,--no-warn-mismatch,--gc-sections
-	else
-		LDFLAGS += -Wl,-Map=$(MAPFILE),--cref,--no-warn-mismatch
-	endif
+  ifeq ($(OPT_LINK_OPTIMIZE),yes)
+    LDFLAGS += -Wl,-Map=$(MAPFILE),--cref,--no-warn-mismatch,--gc-sections
+  else
+    LDFLAGS += -Wl,-Map=$(MAPFILE),--cref,--no-warn-mismatch
+  endif
 endif
 ifeq ($(OPT_GENERATE_LISTINGS),yes)
-	CFLAGS += -Wa,-alms=$(@:.o=.lst)
-	CXXFLAGS += -Wa,-alms=$(@:.o=.lst)
-	ASFLAGS += -Wa,-amhls=$(@:.o=.lst)
+  CFLAGS   += -Wa,-alms=$(@:.o=.lst)
+  CXXFLAGS += -Wa,-alms=$(@:.o=.lst)
+  ASFLAGS  += -Wa,-amhls=$(@:.o=.lst)
 endif
 ifneq ($(LDSCRIPT),)
-	LDFLAGS += -T$(LDSCRIPT)
+  LDFLAGS  += -T$(LDSCRIPT)
+endif
+ifeq ($(OPT_CPU),x86)
+  SRCFLAGS += -m32
+  LDFLAGS  += -m32
+endif
+ifeq ($(OPT_CPU),x64)
+  SRCFLAGS += -m64
+  LDFLAGS  += -m64
+endif
+ifeq ($(OPT_CPU),at91sam7)
+  SRCFLAGS += -mcpu=arm7tdmi -mabi=apcs-gnu
+  LDFLAGS  += -mcpu=arm7tdmi
+endif
+ifeq ($(OPT_CPU),stm32m4)
+  SRCFLAGS += -mcpu=cortex-m4 -mfloat-abi=hard -mfpu=fpv4-sp-d16 -fsingle-precision-constant -falign-functions=16
+  LDFLAGS  += -mcpu=cortex-m4
+  LIBS     += m
 endif
 
 # Generate dependency information
 SRCFLAGS += -MMD -MP -MF $(DEPDIR)/$(@F).d
 
+# Combine all our compiler arguments
+SRCFLAGS += -I. $(patsubst %,-I%,$(INCPATH)) $(patsubst %,-D%,$(patsubst -D%,%,$(DEFS)))
+LDFLAGS  += $(patsubst %,-L%,$(LIBPATH)) $(patsubst %,-l%,$(patsubst -l%,%,$(LIBS)))
+
 # Targets
-.PHONY: builddirs fakefile.o all clean Debug Release cleanDebug cleanRelease
+.PHONY: builddirs fakefile.o fakethumbfile.o elfstats all clean Debug Release cleanDebug cleanRelease
 
 Debug Release:				all
 cleanDebug cleanRelease:	clean
 
-all: builddirs fakefile.o $(TARGETS)
+all: builddirs $(FAKEFILE)  $(TARGETS)
 
 builddirs:
 	@mkdir -p $(BUILDDIR)
 	@mkdir -p $(OBJDIR)
 	@mkdir -p $(DEPDIR)
 
-fakefile.o:
+$(FAKEFILE):
 ifneq ($(OPT_VERBOSE_COMPILE),yes)
-	@echo Compiler Options - $(XCC) -c $(CPPFLAGS) $(CFLAGS) $(SRCFLAGS) fakefile.c -o $(OBJDIR)/$@
-	@echo
+	@echo .
+  ifneq ($(filter %.cpp,$(SRC) $(SRC_NOTHUMB) $(SRC_THUMB)),)
+	@echo C++ Compiler Options.. $(XCXX) -c $(CPPFLAGS) $(CXXFLAGS) $(SRCFLAGS) $(@:.o=.cpp) -o $(OBJDIR)/$@
+  else
+   ifneq ($(filter %.c++,$(SRC) $(SRC_NOTHUMB) $(SRC_THUMB)),)
+	@echo C++ Compiler Options.. $(XCXX) -c $(CPPFLAGS) $(CXXFLAGS) $(SRCFLAGS) $(@:.o=.c++) -o $(OBJDIR)/$@
+   endif
+  endif
+  ifneq ($(filter %.c,$(SRC) $(SRC_NOTHUMB) $(SRC_THUMB)),)
+	@echo C Compiler Options.... $(XCC) -c $(CPPFLAGS) $(CFLAGS) $(SRCFLAGS) $(@:.o=.c) -o $(OBJDIR)/$@
+  endif
+  ifneq ($(filter %.s,$(SRC) $(SRC_NOTHUMB) $(SRC_THUMB)),)
+	@echo Assembler Options..... $(XCC) -c $(CPPFLAGS) $(CFLAGS) $(SRCFLAGS) $(@:.o=.s) -o $(OBJDIR)/$@
+  endif
+	@echo Linker Options........ $(XLD) $(LDFLAGS) $(OBJDIR)/$@ -o $(EXEFILE)
+	@echo .
+endif
+
+fakethumbfile.o $(OBJS_THUMB):	SRCFLAGS += -mthumb -DTHUMB
+
+elfstats:		$(EXEFILE)
+	@echo .
+ifeq ($(USE_VERBOSE_COMPILE),yes)
+	$(XSZ) $<
+else
+	@$(XSZ) $<
 endif
 
 # Implicit Rules
@@ -150,7 +225,7 @@ endif
 $(OBJDIR)/%.o : $$(call obj_src,%.c)
 	@mkdir -p $(dir $@)
 ifeq ($(OPT_VERBOSE_COMPILE),yes)
-	@echo
+	@echo .
 	$(XCC) -c $(CPPFLAGS) $(CFLAGS) $(SRCFLAGS) $< -o $@
 else
 	@echo Compiling $<
@@ -160,7 +235,7 @@ endif
 $(OBJDIR)/%.o : $$(call obj_src,%.cpp)
 	@mkdir -p $(dir $@)
 ifeq ($(OPT_VERBOSE_COMPILE),yes)
-	@echo
+	@echo .
 	$(XCXX) -c $(CPPFLAGS) $(CXXFLAGS) $(SRCFLAGS) $< -o $@
 else
 	@echo Compiling $<
@@ -170,7 +245,7 @@ endif
 $(OBJDIR)/%.o : $$(call obj_src,%.c++)
 	@mkdir -p $(dir $@)
 ifeq ($(OPT_VERBOSE_COMPILE),yes)
-	@echo
+	@echo .
 	$(XCXX) -c $(CPPFLAGS) $(CXXFLAGS) $(SRCFLAGS) $< -o $@
 else
 	@echo Compiling $<
@@ -180,21 +255,21 @@ endif
 $(OBJDIR)/%.o : $$(call obj_src,%.s)
 	@mkdir -p $(dir $@)
 ifeq ($(OPT_VERBOSE_COMPILE),yes)
-	@echo
+	@echo .
 	$(XAS) -c $(CPPFLAGS) $(ASFLAGS) $(SRCFLAGS) $< -o $@
 else
 	@echo Compiling $<
 	@$(XAS) -c $(CPPFLAGS) $(ASFLAGS) $(SRCFLAGS) $< -o $@
 endif
 
-$(EXEFILE): $(OBJS) $(LDSCRIPT)
+$(EXEFILE): $(OBJS_THUMB) $(OBJS_NOTHUMB) $(LDSCRIPT)
 	@mkdir -p $(dir $@)
 ifeq ($(OPT_VERBOSE_COMPILE),yes)
-	@echo
-	$(XLD) $(OBJS) $(LDFLAGS) -o $@
+	@echo .
+	$(XLD) $(OBJS_THUMB) $(OBJS_NOTHUMB) $(LDFLAGS) -o $@
 else
 	@echo Linking $@
-	@$(XLD) $(OBJS) $(LDFLAGS) -o $@
+	@$(XLD) $(OBJS_THUMB) $(OBJS_NOTHUMB) $(LDFLAGS) -o $@
 endif
 ifeq ($(OPT_COPY_EXE),yes)
 	@cp $@ .
@@ -228,7 +303,6 @@ ifeq ($(USE_VERBOSE_COMPILE),yes)
 else
 	@echo Creating $@
 	@$(XOD) -x --syms $< > $@
-	@echo Done
 endif
 ifeq ($(OPT_COPY_EXE),yes)
 	@cp $@ .
diff --git a/tools/gmake_scripts/library_ugfx.mk b/tools/gmake_scripts/library_ugfx.mk
index 24c501fe..450f6ff6 100644
--- a/tools/gmake_scripts/library_ugfx.mk
+++ b/tools/gmake_scripts/library_ugfx.mk
@@ -1,3 +1,10 @@
+#
+# This file is subject to the terms of the GFX License. If a copy of
+# the license was not distributed with this file, you can obtain one at:
+#
+#             http://ugfx.org/license.html
+#
+
 # See readme.txt for the make API
 
 # Requirements:
diff --git a/tools/gmake_scripts/os_chibios.mk b/tools/gmake_scripts/os_chibios.mk
index a81c9803..b8205dd3 100644
--- a/tools/gmake_scripts/os_chibios.mk
+++ b/tools/gmake_scripts/os_chibios.mk
@@ -1,28 +1,60 @@
+#
+# This file is subject to the terms of the GFX License. If a copy of
+# the license was not distributed with this file, you can obtain one at:
+#
+#             http://ugfx.org/license.html
+#
+
 # See readme.txt for the make API
 
 # Requirements:
 #
 # CHIBIOS:			The location of the ChibiOS code	eg CHIBIOS=../chibios
-# CHIBIOS_BOARD		The name of the ChibiOS board		eg CHIBIOS_BOARD=OLIMEX_SAM7_EX256
 # CHIBIOS_PLATFORM	The name of the ChibiOS platform	eg CHIBIOS_PLATFORM=AT91SAM7
 # CHIBIOS_PORT		The name of the ChibiOS port		eg CHIBIOS_PORT=GCC/ARM/AT91SAM7
 #
 
 # Optional:
 #
-# CHIBIOS_LDSCRIPT	The name of the loader script		eg CHIBIOS_LDSCRIPT=$(PORTLD)/AT91SAM7X256.ld
+# CHIBIOS_LDSCRIPT	The name of the loader script		eg CHIBIOS_LDSCRIPT=AT91SAM7X256.ld
+# CHIBIOS_BOARD		The name of the ChibiOS board		eg CHIBIOS_BOARD=OLIMEX_SAM7_EX256 - if not specified you must include equivalent code yourself
+# CHIBIOS_STM32LIB	Use the STM32 library source for drivers instead of native drivers (yes or no) - default no
+# CHIBIOS_VERSION	Which version of ChibiOS is this (2 or 3) - default is 2
 #
 
 PATHLIST += CHIBIOS
 
-include $(CHIBIOS)/boards/$(CHIBIOS_BOARD)/board.mk
-include $(CHIBIOS)/os/hal/platforms/$(CHIBIOS_PLATFORM)/platform.mk
-include $(CHIBIOS)/os/hal/hal.mk
-include $(CHIBIOS)/os/ports/$(CHIBIOS_PORT)/port.mk
-include $(CHIBIOS)/os/kernel/kernel.mk
-LDSCRIPT= $(CHIBIOS_LDSCRIPT)
+ifeq ($(CHIBIOS_VERSION),3)
+  include $(CHIBIOS)/os/hal/hal.mk
+  include $(CHIBIOS)/os/hal/osal/rt/osal.mk
+  include $(CHIBIOS)/os/hal/ports/$(CHIBIOS_PLATFORM)/platform.mk
+  include $(CHIBIOS)/os/rt/rt.mk
+  include $(CHIBIOS)/os/rt/ports/$(CHIBIOS_PORT).mk
+else
+  include $(CHIBIOS)/os/hal/hal.mk
+  include $(CHIBIOS)/os/hal/platforms/$(CHIBIOS_PLATFORM)/platform.mk
+  include $(CHIBIOS)/os/kernel/kernel.mk
+  include $(CHIBIOS)/os/ports/$(CHIBIOS_PORT)/port.mk
+endif
+
+ifneq ($(CHIBIOS_BOARD),)
+  include $(CHIBIOS)/boards/$(CHIBIOS_BOARD)/board.mk
+endif
+ifeq ($(LDSCRIPT),)
+  ifneq ($(CHIBIOS_LDSCRIPT),)
+    LDSCRIPT= $(PORTLD)/$(CHIBIOS_LDSCRIPT)
+  endif
+endif
+
+ifeq ($(CHIBIOS_STM32LIB),yes)
+  include $(CHIBIOS)/ext/stm32lib/stm32lib.mk
+  SRC     += $(STM32SRC)
+  DEFS    += USE_STDPERIPH_DRIVER
+  INCPATH += $(STM32INC)
+endif
+
 INCPATH += $(PORTINC) $(KERNINC) $(TESTINC) \
-          $(HALINC) $(PLATFORMINC) $(BOARDINC)
+           $(HALINC) $(PLATFORMINC) $(BOARDINC)
 SRC  += $(PORTSRC) \
         $(KERNSRC) \
         $(TESTSRC) \
diff --git a/tools/gmake_scripts/os_linux.mk b/tools/gmake_scripts/os_linux.mk
index 39610ca4..0893ca51 100644
--- a/tools/gmake_scripts/os_linux.mk
+++ b/tools/gmake_scripts/os_linux.mk
@@ -1,3 +1,10 @@
+#
+# This file is subject to the terms of the GFX License. If a copy of
+# the license was not distributed with this file, you can obtain one at:
+#
+#             http://ugfx.org/license.html
+#
+
 # See readme.txt for the make API
 
 # Requirements:
diff --git a/tools/gmake_scripts/os_osx.mk b/tools/gmake_scripts/os_osx.mk
index 8b008f4b..9bfc7024 100644
--- a/tools/gmake_scripts/os_osx.mk
+++ b/tools/gmake_scripts/os_osx.mk
@@ -1,10 +1,18 @@
+#
+# This file is subject to the terms of the GFX License. If a copy of
+# the license was not distributed with this file, you can obtain one at:
+#
+#             http://ugfx.org/license.html
+#
+
 # See readme.txt for the make API
 
 # Requirements:
 #
 # OSX_SDK	The location of the SDK eg. OSX_SDK  = /Developer/SDKs/MacOSX10.7.sdk
-# OSX_ARCH	The architecture flags eg.  OSX_ARCH = -mmacosx-version-min=10.3 -arch i386
+# OSX_ARCH	The architecture flags eg.  OSX_ARCH = -mmacosx-version-min=10.3
 #
 
 SRCFLAGS	+= -isysroot $(OSX_SDK) $(OSX_ARCH)
 LDFLAGS		+= -pthread -Wl,-syslibroot,$(OSX_SDK) $(OSX_ARCH)
+OPT_CPU = x86
diff --git a/tools/gmake_scripts/os_win32.chibios.mk b/tools/gmake_scripts/os_win32.chibios.mk
index 5a804c64..0eccf071 100644
--- a/tools/gmake_scripts/os_win32.chibios.mk
+++ b/tools/gmake_scripts/os_win32.chibios.mk
@@ -1,3 +1,10 @@
+#
+# This file is subject to the terms of the GFX License. If a copy of
+# the license was not distributed with this file, you can obtain one at:
+#
+#             http://ugfx.org/license.html
+#
+
 # See readme.txt for the make API
 
 # Requirements:
diff --git a/tools/gmake_scripts/os_win32.mk b/tools/gmake_scripts/os_win32.mk
index 1b33ad85..07d15c20 100644
--- a/tools/gmake_scripts/os_win32.mk
+++ b/tools/gmake_scripts/os_win32.mk
@@ -1,6 +1,14 @@
+#
+# This file is subject to the terms of the GFX License. If a copy of
+# the license was not distributed with this file, you can obtain one at:
+#
+#             http://ugfx.org/license.html
+#
+
 # See readme.txt for the make API
 
 # Requirements:
 #
 # NONE
 #
+OPT_CPU = x86
diff --git a/tools/gmake_scripts/readme.txt b/tools/gmake_scripts/readme.txt
index 979ca364..48ac2c9e 100644
--- a/tools/gmake_scripts/readme.txt
+++ b/tools/gmake_scripts/readme.txt
@@ -15,6 +15,7 @@ OPT_COPY_EXE=no|yes				- Copy the final program to the local project directory -
 OPT_NONSTANDARD_FLAGS=no		- Turn off adding the standard compiler language flags - default no
 OPT_LINK_OPTIMIZE=no			- Remove unused code/data during link - default no
 OPT_OS=win32|win32.chibios|linux|osx|chibios|freertos|ecos|raw32|rawrtos	- Mandatory: The operating system
+OPT_CPU=x86|x64|stm32m4|at91sam7	- Add some cpu dependant flags
 
 BUILDDIR						- Build Directory - default is ".build" or "bin/Debug" or "bin/Release" depending on the target
 PROJECT							- Project Name - default is the name of the project directory
@@ -27,6 +28,7 @@ XAS								- Assembler - default is "$(ARCH)gcc -x assembler-with-cpp"
 XLD								- Linker - default is "$(ARCH)gcc"
 XOC								- Object Copy - default is "$(ARCH)objcopy"
 XOD								- Object Dump - default is "$(ARCH)objdump"
+XSZ								- Report binary dump details - default is "$(ARCH)size"
 
 SRCFLAGS						- Compiler defines for c, c++ and assembler files - default is ""
 CFLAGS							- C specific compiler defines - default is ""
@@ -43,8 +45,18 @@ LIBPATH							- List of library include directories - default is ""
 DEFS							- List of preprocessor defines (any -D prefix is ignored) - default is ""
 LIBS							- List of libraries (any -l prefix is ignored) - default is ""
 SRC								- List of c, c++ and assembler source files - default is ""
+OBJS							- List of additional object files - default is ""
 LDSCRIPT						- Custom loader script - default is ""
 
+ARM Specific options
+----------------------------
+OPT_THUMB=no|yes				- Compile normal sources in thumb mode - default is no
+
+SRC_THUMB						- List of source files that MUST be compiled in thumb mode - default is ""
+SRC_NOTHUMB						- List of source files that MUST be compiled in non-thumb mode - default is ""
+OBJS_THUMB						- List of object files that MUST be linked in thumb mode - default is ""
+OBJS_NOTHUMB					- List of object files that MUST be linked in non-thumb mode - default is ""
+
 Targets
 ----------------------------