move -mthumb to overridable vars

Author: mean

ArduinoToolchainStm32.cmake

@@ -49,7 +49,7 @@ set(CMAKE_ASM_COMPILER ${PLATFORM_TOOLCHAIN_PATH}/${STM32_TOOLCHAIN_PREFIX}gcc${
 set(CMAKE_CXX_COMPILER ${PLATFORM_TOOLCHAIN_PATH}/${STM32_TOOLCHAIN_PREFIX}g++${TOOLCHAIN_SUFFIX} CACHE PATH "" FORCE)
  #set(CMAKE_CXX_LINK_EXECUTABLE    "<CMAKE_CXX_COMPILER>  <FLAGS> <CMAKE_CXX_LINK_FLAGS>  <LINK_FLAGS> <OBJECTS>  -o <TARGET> <LINK_LIBRARIES>")
 # There is probably a cleaner way to do this....
- set(CMAKE_CXX_LINK_EXECUTABLE    "<CMAKE_CXX_COMPILER>   <CMAKE_CXX_LINK_FLAGS>  <LINK_FLAGS> -lgcc -mthumb -Wl,--start-group  <OBJECTS> <LINK_LIBRARIES> -Wl,--end-group   -o <TARGET> ")
+set(CMAKE_CXX_LINK_EXECUTABLE    "<CMAKE_CXX_COMPILER>   <CMAKE_CXX_LINK_FLAGS>  <LINK_FLAGS> -lgcc -Wl,--start-group  <OBJECTS> <LINK_LIBRARIES> -Wl,--end-group   -o <TARGET> ")
 #set(CMAKE_EXE_LINKER_FLAGS "" CACHE INTERNAL "")
 #set(CMAKE_CXX_LINK_FLAGS   "" CACHE INTERNAL "")
 #set(CMAKE_C_LINK_FLAGS     "" CACHE INTERNAL "")

Platform/Core/BoardFlags/LinkerFlagsSetterStm32.cmake

@@ -2,7 +2,7 @@
 function(set_board_linker_flags LINKER_FLAGS BOARD_ID IS_MANUAL)
     IF(DEFINED ARDUINO_MCU_FLAGS)   
     ELSE(DEFINED ARDUINO_MCU_FLAGS)   
-        SET(ARDUINO_MCU_FLAGS "  -mcpu=cortex-m3")
+        SET(ARDUINO_MCU_FLAGS "  -mcpu=cortex-m3 -mthumb")
     ENDIF(DEFINED ARDUINO_MCU_FLAGS)   
 
     set(LINK_FLAGS "${LINK_FLAGS} -Os  -Wl,--gc-sections ${ARDUINO_MCU_FLAGS}  -Xlinker -print-memory-usage ")

Platform/Initialization/DefaultCFlagsStm32.cmake

@@ -13,10 +13,10 @@ IF(NOT DEFINED ARDUINO_CFLAGS_SET)
 
     IF(DEFINED ARDUINO_MCU_FLAGS)   
     ELSE(DEFINED ARDUINO_MCU_FLAGS)   
-        SET(ARDUINO_MCU_FLAGS "  -mcpu=cortex-m3")
+        SET(ARDUINO_MCU_FLAGS "  -mcpu=cortex-m3 -mthumb")
     ENDIF(DEFINED ARDUINO_MCU_FLAGS)   
 
-    SET(ARDUINO_DEFAULT_CFLAGS " -ffunction-sections -fdata-sections -nostdlib --param max-inline-insns-single=500  -w  ${ARDUINO_MCU_FLAGS}  -mthumb   -g ")
+    SET(ARDUINO_DEFAULT_CFLAGS " -ffunction-sections -fdata-sections -nostdlib --param max-inline-insns-single=500  -w  ${ARDUINO_MCU_FLAGS}    -g ")
     SET(ARDUINO_DEFAULT_CFLAGS " ${ARDUINO_DEFAULT_CFLAGS}  -DGENERIC_BOOTLOADER -DF_CPU=${MCU_SPEED}L  -DARDUINO_ARCH_STM32F1 -DCONFIG_MAPLE_MINI_NO_DISABLE_DEBUG    ")
     #SET(ARDUINO_DEFAULT_CFLAGS " ${ARDUINO_DEFAULT_CFLAGS}  -DF_CPU=72000000L  -DARDUINO_ARCH_STM32F1 ")
 

select_mcu_stm32.cmake

@@ -18,7 +18,7 @@ ELSEIF(USE_GD32F303)
     set(X_ARDUINO_DEFAULT_BOARD genericGD32F303C)        # Default Board ID, when not specified
     set(X_ARDUINO_CPU           GD32F303C8)
 #    SET(ARDUINO_MCU_FLAGS               "  -mcpu=cortex-m4 ")
-    SET(ARDUINO_MCU_FLAGS               "  -mcpu=cortex-m4 -mfloat-abi=softfp")# -mfpu=fpv4-sp-d16")
+    SET(ARDUINO_MCU_FLAGS               "  -mcpu=cortex-m4 -mfloat-abi=softfp -march=armv7 -mthumb")# -mfpu=fpv4-sp-d16")
     ADD_DEFINITIONS("-DHIGH_SPEED_ADC")
     SET(X_ARDUINO_UPLOAD_METHOD BMP) # Use blackmagic link, if you comment it out you'll use DFU => 8kB flash
 ELSE()