import os

# toolchains options
ARCH='arm'
CPU='cortex-m4'
CROSS_TOOL='keil'

if os.getenv('RTT_CC'):
	CROSS_TOOL = os.getenv('RTT_CC')

# cross_tool provides the cross compiler
# EXEC_PATH is the compiler execute path, for example, CodeSourcery, Keil MDK, IAR

if  CROSS_TOOL == 'gcc':
	PLATFORM 	= 'gcc'
	EXEC_PATH 	= 'D:/SourceryGCC/bin'
elif CROSS_TOOL == 'keil':
	PLATFORM 	= 'armcc'
	EXEC_PATH 	= 'C:/Keil_v5'
elif CROSS_TOOL == 'iar':
    print('================ERROR============================')
    print('Not support iar yet!')
    print('=================================================')
    exit(0)

if os.getenv('RTT_EXEC_PATH'):
	EXEC_PATH = os.getenv('RTT_EXEC_PATH')

BUILD = 'debug'

if PLATFORM == 'gcc':
    # toolchains
    PREFIX = 'arm-none-eabi-'
    CC = PREFIX + 'gcc'
    AS = PREFIX + 'gcc'
    AR = PREFIX + 'ar'
    LINK = PREFIX + 'gcc'
    TARGET_EXT = 'elf'
    SIZE = PREFIX + 'size'
    OBJDUMP = PREFIX + 'objdump'
    OBJCPY = PREFIX + 'objcopy'

    DEVICE = ' -mcpu=cortex-m4 -mthumb -ffunction-sections -fdata-sections'
    CFLAGS = DEVICE
    AFLAGS = ' -c' + DEVICE + ' -x assembler-with-cpp'
    LFLAGS = DEVICE + ' -Wl,--gc-sections,-Map=rtthread-apollo2.map,-cref,-u,am_reset_isr -T rtthread_link.ld'

    CPATH = ''
    LPATH = ''

    if BUILD == 'debug':
        CFLAGS += ' -O0 -gdwarf-2'
        AFLAGS += ' -gdwarf-2'
    else:
        CFLAGS += ' -O2'

    POST_ACTION = OBJCPY + ' -O binary $TARGET rtthread.bin\n' + SIZE + ' $TARGET \n'

elif PLATFORM == 'armcc':
    # toolchains
    CC = 'armcc'
    AS = 'armasm'
    AR = 'armar'
    LINK = 'armlink'
    TARGET_EXT = 'axf'

    DEVICE = ' --device DARMSTM'
    CFLAGS = DEVICE + ' --apcs=interwork'
    AFLAGS = DEVICE
    LFLAGS = DEVICE + ' --info sizes --info totals --info unused --info veneers --list rtthread-apollo2.map --scatter rtthread-apollo2.sct'

    CFLAGS += ' --c99'
    CFLAGS += ' -I' + EXEC_PATH + '/ARM/RV31/INC'
    LFLAGS += ' --libpath ' + EXEC_PATH + '/ARM/RV31/LIB'

    EXEC_PATH += '/arm/bin40/'

    if BUILD == 'debug':
        CFLAGS += ' -g -O0'
        AFLAGS += ' -g'
    else:
        CFLAGS += ' -O2'

    POST_ACTION = 'fromelf --bin $TARGET --output rtthread.bin \nfromelf -z $TARGET'

@@ -1648,22 +1648,21 @@
 ' --
-device DARMSTM
+cpu Cortex-M4
 '%0A  
@@ -1682,16 +1682,22 @@
 VICE + '
+ --c99
  --apcs=
@@ -1853,24 +1853,16 @@
 rtthread
--apollo2
 .sct'%0A%0A 
@@ -1860,25 +1860,25 @@
 d.sct'%0A%0A    
-C
+L
 FLAGS += ' -
@@ -1882,92 +1882,76 @@
 ' --
-c99'%0A    CFLAGS += ' -I' + EXEC_PATH + '/ARM/RV31/INC'%0A    LFLAGS += ' --libpath ' +
+keep *.o(.rti_fn.*)   --keep *.o(FSymTab) --keep *.o(VSymTab)' %0A%0A   
  EXE
@@ -1962,55 +1962,25 @@
 TH +
+=
  '/ARM/
-RV31/LIB'%0A%0A    EXEC_PATH += '/arm
+ARMCC
 /bin
-40/
 '%0A%0A 

update scons config: update MDK support.