bsp,am,Makefile: generate files.mk from scons commands

bsp/abstract-machine/.gitignore

@@ -1 +1,2 @@
 rtconfig.h
+files.mk

bsp/abstract-machine/Makefile

@@ -1,14 +1,29 @@
 ARCH ?= native
+FILE_MK = files.mk
+FILE_TMP = .tmp.$(FILE_MK)
 RTCONFIG_H = rtconfig.h
 
 NAME = rtthread
 SRCS = 
+-include $(FILE_MK)
 include $(AM_HOME)/Makefile
 
 $(RTCONFIG_H):
 	touch $@
 	scons --useconfig=.config
 
-init: $(RTCONFIG_H)
+$(FILE_MK): $(RTCONFIG_H)
+	scons -c
+	scons --verbose -n > $(FILE_TMP)
+	cat $(FILE_TMP) | grep -o '[^ ]*.c$$' | awk '{print "SRCS += " $$1}' > $@
+	cat $(FILE_TMP) | grep 'gcc ' | head -n 1 | grep -o " -I[^ ]*" | awk '{print "CFLAGS += " $$1}' >> $@
+	rm $(FILE_TMP)
 
-.PHONY: init
+menuconfig:
+	scons --menuconfig
+	scons --genconfig
+	$(MAKE) init
+
+init: $(FILE_MK)
+
+.PHONY: init menuconfig