145 lines
4.6 KiB
Text
145 lines
4.6 KiB
Text
# This is part of a GNU Makefile, included by the Makefiles in
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# each of the subdirectories.
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#
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# This file includes all of the baseline code provided by Nachos.
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# Whenever you add a .h or .cc file, put it in the appropriate
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# _H,_C, or _O list.
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#
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# The dependency graph between assignments is:
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# 1. THREADS before everything else
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# 2. USERPROG must come before VM
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# 3. USERPROG can come before or after FILESYS, but if USERPROG comes
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# before (as in this distribution), then it must define FILESYS_STUB
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#
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# Other than that, you have complete flexibility.
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#
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# You might want to play with the CFLAGS, but if you use -O it may
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# break the thread system. You might want to use -fno-inline if
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# you need to call some inline functions from the debugger.
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# Copyright (c) 1992 The Regents of the University of California.
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# All rights reserved. See copyright.h for copyright notice and limitation
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# of liability and disclaimer of warranty provisions.
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###########################################################################
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# RN: Sets of objects file to be linked for each nachos flavor. This
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# is the only section you may need to modify when adding files in nachos.
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#
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THREAD_O := main.o list.o scheduler.o synch.o synchlist.o \
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system.o thread.o utility.o threadtest.o interrupt.o \
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stats.o sysdep.o timer.o
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USERPROG_O := addrspace.o bitmap.o exception.o progtest.o console.o \
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machine.o mipssim.o translate.o
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VM_O :=
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FILESYS_O := directory.o filehdr.o filesys.o fstest.o openfile.o \
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synchdisk.o disk.o
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NETWORK_O := nettest.o post.o network.o
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#
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###########################################################################
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S_OFILES := switch.o
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CFLAGS = -g -Wall -Wextra -Wshadow $(INCPATH) $(DEFINES) $(HOST) -DCHANGED
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LDFLAGS = -g
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ASFLAGS = -g
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# These definitions may change as the software is updated.
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# Some of them are also system dependent
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CPP= gcc -E -P
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CC = g++
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LD = g++
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AS = gcc -c
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PROGRAM := nachos
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MAKEFILES := Makefile \
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../Makefile.common \
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../Makefile.dep
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OFILES := $(strip $(C_OFILES) $(S_OFILES))
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# RN: Dependency files start with a '.' to avoid annoying completion
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# confusion under shell, emacs, etc.
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C_DFILES := $(patsubst %.o,.%.d,$(C_OFILES))
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S_DFILES := $(patsubst %.o,.%.d,$(S_OFILES))
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DFILES := $(strip $(C_DFILES) $(S_DFILES))
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# RN: Hummm... There's a lot to tell about the story of the two
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# following lines. Essentially, it allows 'make' to implicitely search
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# for source/header files in various directories. The original Nachos
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# Makefile was not using this 'vpath' feature, although it was using
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# the aforementioned implicit search policy! The problem came from
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# the rule:
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# $(C_OFILES): %.o:
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# $(CC) blabla...
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# which is correct if .o files have no extra dependency rules. In this
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# case, 'make' finds the associated .cc file in the directories it
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# knows of (because they were listed in some macros!). However, if we add
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# a rule such as
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# $(C_OFILES): toto
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# then 'make' tries to compile 'toto' each time it rebuilds a ".o"
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# file. As a result, the former rule was modified as follows
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# $(C_OFILES): %.o: %.cc
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# As you may guess, it did'nt work because 'make' was no longer using
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# its @#!^# implicit policy in this case. Crazy, isn't it? Fortunately,
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# there's a GNU extension that requires 'make' to use a "search path" for
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# files that match a given pattern: this is the vpath directive...
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# Well, I guess you should stop wondering why these two lines are here: you'd
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# better concentrate on your exercise! ;-)
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vpath %.cc ../machine:../threads:../userprog:../filesys:../network:../vm:../
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vpath %.S ../machine:../threads:../userprog:../filesys:../network:../vm:../
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# Must be the first rule
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.PHONY: default
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default: $(PROGRAM)
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$(OFILES): $(MAKEFILES)
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$(PROGRAM): $(OFILES)
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$(LD) $(OFILES) $(LDFLAGS) -o $(PROGRAM)
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$(C_OFILES): %.o: %.cc
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$(CC) $(CFLAGS) -c $< -o $@
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switch.o: ../threads/switch.S
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$(CPP) $(INCPATH) $(HOST) ../threads/switch.S > swtch.s
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$(AS) $(ASFLAGS) -o switch.o swtch.s
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rm swtch.s
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# RN: Rules to generate dependency files. We can no longer rely on a
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# single '.depend' file if we want to avoid a global recompilation each
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# time a file is modified! Thus, each %.cc file is associated with its own
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# .%.d dependency file...
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.PHONY: depend
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depend: $(DFILES)
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$(DFILES): $(MAKEFILES)
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$(C_DFILES): .%.d: %.cc
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$(CC) $(CFLAGS) -MM $< | \
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sed -e 's|\(.*\)\.o:|.\1.d \1.o:|g' > $@
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$(S_DFILES): .%.d: %.S
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$(CC) $(CFLAGS) -MM $< | \
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sed -e 's|\(.*\)\.o:|.\1.d \1.o:|g' > $@
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ifneq ($(MAKECMDGOALS),clean)
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-include $(DFILES)
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endif
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# Cleaning rules
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.PHONY: clean
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clean:
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rm -f core nachos DISK *.o *.s .*.d coff2noff out disassemble
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.PHONY: distclean
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distclean: clean
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rm -f *\~ \#*\#
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