in clean-classic for linux-arm64 in txt/Makefile add install Gast library

clean-classic/linux-arm64/txt/Makefile

@@ -56,7 +56,7 @@ GMAKECURRENTDIR = ${shell echo `pwd`}
 #
 # Install section
 #
-install: install_bin install_stdenv install_man install_doc install_ArgEnv install_Generics install_StdLib install_Directory install_MersenneTwister install_TCPIP install_Platform $(PATCHES)
+install: install_bin install_stdenv install_man install_doc install_ArgEnv install_Generics install_Gast install_StdLib install_Directory install_MersenneTwister install_TCPIP install_Platform $(PATCHES)
 	$(PATCH_BIN) $(INSTALL_CLM) CLEANLIB $(INSTALL_EXE_DIR)
 	
 io: install
@@ -174,6 +174,13 @@ $(INSTALL_LIB_DIR)/Generics :
 install_Generics : $(INSTALL_LIB_DIR)/Generics
 	cp -r data/Generics/* $(INSTALL_LIB_DIR)/Generics
 
+$(INSTALL_LIB_DIR)/Gast :
+	mkdir -p $@
+	mkdir -p $@/"Clean System Files"
+
+install_Gast : $(INSTALL_LIB_DIR)/Gast
+	cp -r data/Gast/* $(INSTALL_LIB_DIR)/Gast
+
 $(INSTALL_LIB_DIR)/StdLib :
 	mkdir -p $@
 	mkdir -p $@/"Clean System Files"