message: Fix ios make file.
diff: @@ -509,6 +509,7 @@ ifeq ($(TARGET),IOS)
  -fembed-bitcode \
  -miphoneos-version-min=${MIN_SDK_VERSION} \
  -framework Accelerate \
  + -framework CoreFoundation \
  -Xlinker -S \
  -Xlinker -x \
  -Xlinker -dead_strip \
  @@ -533,6 +534,7 @@ ifeq ($(TARGET),IOS)
  -fembed-bitcode \
  -miphoneos-version-min=${MIN_SDK_VERSION} \
  -framework Accelerate \
  + -framework CoreFoundation \
  -Xlinker -S \
  -Xlinker -x \
  -Xlinker -dead_strip \
  @@ -556,6 +558,7 @@ ifeq ($(TARGET),IOS)
  -fembed-bitcode \
  -miphoneos-version-min=${MIN_SDK_VERSION} \
  -framework Accelerate \
  + -framework CoreFoundation \
  -Xlinker -S \
  -Xlinker -x \
  -Xlinker -dead_strip \
  @@ -580,6 +583,7 @@ ifeq ($(TARGET),IOS)
  -fembed-bitcode \
  -mios-simulator-version-min=${MIN_SDK_VERSION} \
  -framework Accelerate \
  + -framework CoreFoundation \
  -Xlinker -S \
  -Xlinker -x \
  -Xlinker -dead_strip \
  @@ -603,6 +607,7 @@ ifeq ($(TARGET),IOS)
  -fembed-bitcode \
  -mios-simulator-version-min=${MIN_SDK_VERSION} \
  -framework Accelerate \
  + -framework CoreFoundation \
  -Xlinker -S \
  -Xlinker -x \
  -Xlinker -dead_strip \
  @@ -896,6 +901,14 @@ $(HOST_OBJDIR)%.pb.o: $(HOST_GENDIR)%.pb.cc
  # we compile the C++.
  $(PROTO_TEXT_OBJS) : $(PROTO_TEXT_PB_H_FILES)
  +# Ensures we link CoreFoundation as it is used for time library when building
  +# for Mac.
  +ifeq ($(TARGET),IOS)
  + ifeq ($(IOS_ARCH),X86_64)
  + HOST_LDOPTS += -framework CoreFoundation
  + endif
  +endif
  +
  # Runs proto_text to generate C++ source files from protos.
  $(PROTO_TEXT): $(PROTO_TEXT_OBJS) $(PROTO_TEXT_PB_H_FILES)
  @mkdir -p $(dir $@)
  