diff --git a/bsp/imxrt1052-evk/rtconfig.py b/bsp/imxrt1052-evk/rtconfig.py
index 5b0695c67..cb11a8267 100644
--- a/bsp/imxrt1052-evk/rtconfig.py
+++ b/bsp/imxrt1052-evk/rtconfig.py
@@ -12,7 +12,7 @@ if os.getenv('RTT_CC'):
 # EXEC_PATH is the compiler execute path, for example, CodeSourcery, Keil MDK, IAR
 if  CROSS_TOOL == 'gcc':
     PLATFORM    = 'gcc'
-    EXEC_PATH   = r'D:\Program Files (x86)\GNU Tools ARM Embedded\5.4 2016q3\bin'
+    EXEC_PATH   = '/usr/local/Cellar/arm-none-eabi-gcc/7-2017-q4-major/gcc/bin/'
 elif CROSS_TOOL == 'keil':
 	PLATFORM 	= 'armcc'
 	EXEC_PATH 	= 'C:/Keil_v5'
@@ -40,8 +40,8 @@ if PLATFORM == 'gcc':
     OBJCPY = PREFIX + 'objcopy'
     STRIP = PREFIX + 'strip'
 
-    DEVICE = ' -mcpu=cortex-m7 -mthumb -mfpu=fpv4-sp-d16 -mfloat-abi=softfp -ffunction-sections -fdata-sections'
-    CFLAGS = DEVICE + ' -std=c99 -Wall -DUSE_HAL_DRIVER -D__ASSEMBLY__ -D__FPU_PRESENT -eentry'
+    DEVICE = ' -mcpu=cortex-m7 -mthumb -mfpu=fpv4-sp-d16 -mfloat-abi=hard -ffunction-sections -fdata-sections'
+    CFLAGS = DEVICE + ' -std=c99 -Wall -D__FPU_PRESENT -eentry'
     AFLAGS = ' -c' + DEVICE + ' -x assembler-with-cpp -Wa,-mimplicit-it=thumb '
     LFLAGS = DEVICE + ' -lm -lgcc -lc' + ' -nostartfiles -Wl,--gc-sections,-Map=rtthread-imxrt-gcc.map,-cref,-u,Reset_Handler -T ./Libraries/gcc/MIMXRT1052xxxxx_flexspi_nor.ld'
 
@@ -77,7 +77,7 @@ elif PLATFORM == 'armcc':
     DEVICE = ' --cpu Cortex-M7.fp.sp'
     CFLAGS = DEVICE + ' --apcs=interwork'
     AFLAGS = DEVICE
-    LFLAGS = DEVICE + ' --info sizes --info totals --info unused --info veneers --list rtthread-imxrt-mdk.map --scatter ./Libraries/arm/MIMXRT1052xxxxx_flexspi_nor.scf'
+    LFLAGS = DEVICE + ' --libpath "' + EXEC_PATH + '\ARM\ARMCC\lib" --info sizes --info totals --info unused --info veneers --list rtthread-imxrt-mdk.map --scatter ./Libraries/arm/MIMXRT1052xxxxx_flexspi_nor.scf'
 
     CFLAGS += ' --diag_suppress=66,1296,186'
     CFLAGS += ' -I' + EXEC_PATH + '/ARM/RV31/INC'
@@ -100,12 +100,13 @@ elif PLATFORM == 'armcc':
 elif PLATFORM == 'iar':
     # toolchains
     CC = 'iccarm'
+    CXX = 'iccarm'
     AS = 'iasmarm'
     AR = 'iarchive'
     LINK = 'ilinkarm'
     TARGET_EXT = 'out'
 
-    DEVICE = ' -D USE_STDPERIPH_DRIVER'
+    DEVICE = ' -D__FPU_PRESENT'
 
     CFLAGS = DEVICE
     CFLAGS += ' --diag_suppress Pa050'
@@ -125,6 +126,8 @@ elif PLATFORM == 'iar':
     CFLAGS += ' -Ol'
     CFLAGS += ' --use_c++_inline'
 
+    CXXFLAGS = CFLAGS
+
     AFLAGS = ''
     AFLAGS += ' -s+'
     AFLAGS += ' -w+'