message: move -r to ARFLAGS, fix trailing whitespace
diff: @@ -6,7 +6,7 @@ TARGET_TOOLCHAIN_PREFIX := %{TARGET_TOOLCHAIN_PREFIX}%
  CXX := '$(TARGET_TOOLCHAIN_ROOT)$(TARGET_TOOLCHAIN_PREFIX)g++'
  CC := '$(TARGET_TOOLCHAIN_ROOT)$(TARGET_TOOLCHAIN_PREFIX)gcc'
  AS := '$(TARGET_TOOLCHAIN_ROOT)$(TARGET_TOOLCHAIN_PREFIX)as'
  -AR := '$(TARGET_TOOLCHAIN_ROOT)$(TARGET_TOOLCHAIN_PREFIX)ar' -r
  +AR := '$(TARGET_TOOLCHAIN_ROOT)$(TARGET_TOOLCHAIN_PREFIX)ar'
  LD := '$(TARGET_TOOLCHAIN_ROOT)$(TARGET_TOOLCHAIN_PREFIX)ld'
  NM := '$(TARGET_TOOLCHAIN_ROOT)$(TARGET_TOOLCHAIN_PREFIX)nm'
  OBJDUMP := '$(TARGET_TOOLCHAIN_ROOT)$(TARGET_TOOLCHAIN_PREFIX)objdump'
  @@ -14,7 +14,7 @@ OBJCOPY := '$(TARGET_TOOLCHAIN_ROOT)$(TARGET_TOOLCHAIN_PREFIX)objcopy'
  SIZE := '$(TARGET_TOOLCHAIN_ROOT)$(TARGET_TOOLCHAIN_PREFIX)size'
  RM = rm -f
  -ARFLAGS := -cs
  +ARFLAGS := -csr
  SRCS := \
  %{SRCS}%
  