Add gcc 8.4

Change-Id: Ic507810ed238e4985352d819948e9f4f85767be4
diff --git a/mbtk/Make.defines b/mbtk/Make.defines
index a2629c4..0f209cc 100755
--- a/mbtk/Make.defines
+++ b/mbtk/Make.defines
@@ -6,7 +6,7 @@
 # static / shared

 BUILD_LIB_TYPE = shared

 # gcc-4.9 / gcc-8.4

-BUILD_PLATFORM = gcc-4.9

+BUILD_PLATFORM_TEMP

 OUT_DIR = $(ROOT)/out

 BUILD_ROOT = $(ROOT)/mbtk

 BUILD_TOOLCHAIN_DIR = $(ROOT)/toolchain/$(BUILD_PLATFORM)

@@ -16,8 +16,8 @@
 CC=$(BUILD_TOOLCHAIN_DIR)/bin/arm-openwrt-linux-uclibcgnueabi-gcc

 AR=$(BUILD_TOOLCHAIN_DIR)/bin/arm-openwrt-linux-uclibcgnueabi-ar

 else ifeq ($(BUILD_PLATFORM), gcc-8.4)

-CC=$(BUILD_TOOLCHAIN_DIR)/bin/arm-openwrt-linux-gcc

-AR=$(BUILD_TOOLCHAIN_DIR)/bin/arm-openwrt-linux-ar

+CC=$(BUILD_TOOLCHAIN_DIR)/bin/arm-openwrt-linux-uclibcgnueabi-gcc

+AR=$(BUILD_TOOLCHAIN_DIR)/bin/arm-openwrt-linux-uclibcgnueabi-ar

 else

 CC=gcc

 AR=ar