diff --git a/bsp/stm32f40x/rtconfig.py b/bsp/stm32f40x/rtconfig.py
index 8621d6a099b5a12ff14453b9b1ee3d1a4d248d1f..d22162626decfda717e5eb933b4b8987b863e1ed 100644
--- a/bsp/stm32f40x/rtconfig.py
+++ b/bsp/stm32f40x/rtconfig.py
@@ -40,10 +40,10 @@ if PLATFORM == 'gcc':
     OBJDUMP = PREFIX + 'objdump'
     OBJCPY = PREFIX + 'objcopy'
 
-    DEVICE = ' -mcpu=cortex-m4 -mthumb -mfpu=fpv4-sp-d16 -mfloat-abi=softfp -ffunction-sections -fdata-sections'
-    CFLAGS = DEVICE 
+    DEVICE = '  -mcpu=cortex-m4 -mthumb -mfpu=fpv4-sp-d16 -mfloat-abi=hard -ffunction-sections -fdata-sections'
+    CFLAGS = DEVICE + ' -g -Wall -DSTM32F407ZG -DSTM32F4XX -DUSE_STDPERIPH_DRIVER -D__ASSEMBLY__ -D__FPU_USED'
     AFLAGS = ' -c' + DEVICE + ' -x assembler-with-cpp -Wa,-mimplicit-it=thumb '
-    LFLAGS = DEVICE + ' -Wl,--gc-sections,-Map=rtthread-stm32.map,-cref,-u,Reset_Handler -T stm32_rom.ld'
+    LFLAGS = DEVICE + ' -lm -lgcc -lc' + ' -nostartfiles -Wl,--gc-sections,-Map=rtthread-stm32.map,-cref,-u,Reset_Handler -T stm32_rom.ld'
 
     CPATH = ''
     LPATH = ''
@@ -64,8 +64,8 @@ elif PLATFORM == 'armcc':
     LINK = 'armlink'
     TARGET_EXT = 'axf'
 
-    DEVICE = ' --device DARMSTM'
-    CFLAGS = DEVICE + ' --apcs=interwork'
+    DEVICE = ' --cortex-m4.fp'
+    CFLAGS = DEVICE + ' --apcs=interwork -DUSE_STDPERIPH_DRIVER -DSTM32F40_41xxx'
     AFLAGS = DEVICE
     LFLAGS = DEVICE + ' --info sizes --info totals --info unused --info veneers --list rtthread-stm32.map --scatter stm32_rom.sct'