-
Notifications
You must be signed in to change notification settings - Fork 21
/
Copy pathGNUmakefile
233 lines (179 loc) · 6.32 KB
/
GNUmakefile
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
#
# This makefile system follows the structuring conventions
# recommended by Peter Miller in his excellent paper:
#
# Recursive Make Considered Harmful
# http://aegis.sourceforge.net/auug97.pdf
#
OBJDIR := obj
ifdef LAB
SETTINGLAB := true
else
-include conf/lab.mk
endif
-include conf/env.mk
ifndef SOL
SOL := 0
endif
ifndef LABADJUST
LABADJUST := 0
endif
ifndef LABSETUP
LABSETUP := ./
endif
TOP = .
# Cross-compiler jos toolchain
#
# This Makefile will automatically use the cross-compiler toolchain
# installed as 'i386-jos-elf-*', if one exists. If the host tools ('gcc',
# 'objdump', and so forth) compile for a 32-bit x86 ELF target, that will
# be detected as well. If you have the right compiler toolchain installed
# using a different name, set GCCPREFIX explicitly in conf/env.mk
# try to infer the correct GCCPREFIX
ifndef GCCPREFIX
GCCPREFIX := $(shell if i386-jos-elf-objdump -i 2>&1 | grep '^elf32-i386$$' >/dev/null 2>&1; \
then echo 'i386-jos-elf-'; \
elif objdump -i 2>&1 | grep 'elf32-i386' >/dev/null 2>&1; \
then echo ''; \
else echo "***" 1>&2; \
echo "*** Error: Couldn't find an i386-*-elf version of GCC/binutils." 1>&2; \
echo "*** Is the directory with i386-jos-elf-gcc in your PATH?" 1>&2; \
echo "*** If your i386-*-elf toolchain is installed with a command" 1>&2; \
echo "*** prefix other than 'i386-jos-elf-', set your GCCPREFIX" 1>&2; \
echo "*** environment variable to that prefix and run 'make' again." 1>&2; \
echo "*** To turn off this error, run 'gmake GCCPREFIX= ...'." 1>&2; \
echo "***" 1>&2; exit 1; fi)
endif
# try to infer the correct QEMU
ifndef QEMU
QEMU := $(shell if which qemu > /dev/null; \
then echo qemu; exit; \
else \
qemu=/Applications/Q.app/Contents/MacOS/i386-softmmu.app/Contents/MacOS/i386-softmmu; \
if test -x $$qemu; then echo $$qemu; exit; fi; fi; \
echo "***" 1>&2; \
echo "*** Error: Couldn't find a working QEMU executable." 1>&2; \
echo "*** Is the directory containing the qemu binary in your PATH" 1>&2; \
echo "*** or have you tried setting the QEMU variable in conf/env.mk?" 1>&2; \
echo "***" 1>&2; exit 1)
endif
# try to generate a unique GDB port
GDBPORT := $(shell expr `id -u` % 5000 + 25000)
CC := $(GCCPREFIX)gcc -pipe
AS := $(GCCPREFIX)as
AR := $(GCCPREFIX)ar
LD := $(GCCPREFIX)ld
OBJCOPY := $(GCCPREFIX)objcopy
OBJDUMP := $(GCCPREFIX)objdump
NM := $(GCCPREFIX)nm
# Native commands
NCC := gcc $(CC_VER) -pipe
TAR := gtar
PERL := perl
# Compiler flags
# -fno-builtin is required to avoid refs to undefined functions in the kernel.
# Only optimize to -O1 to discourage inlining, which complicates backtraces.
CFLAGS := $(CFLAGS) $(DEFS) $(LABDEFS) -O1 -fno-builtin -I$(TOP) -MD
CFLAGS += -Wall -Wno-format -Wno-unused -Werror -gstabs -m32
CFLAGS += -I$(TOP)/net/lwip/include \
-I$(TOP)/net/lwip/include/ipv4 \
-I$(TOP)/net/lwip/jos
# Add -fno-stack-protector if the option exists.
CFLAGS += $(shell $(CC) -fno-stack-protector -E -x c /dev/null >/dev/null 2>&1 && echo -fno-stack-protector)
# Common linker flags
LDFLAGS := -m elf_i386
# Linker flags for JOS user programs
ULDFLAGS := -T user/user.ld
GCC_LIB := $(shell $(CC) $(CFLAGS) -print-libgcc-file-name)
# Lists that the */Makefrag makefile fragments will add to
OBJDIRS :=
# Make sure that 'all' is the first target
all:
# Eliminate default suffix rules
.SUFFIXES:
# Delete target files if there is an error (or make is interrupted)
.DELETE_ON_ERROR:
# make it so that no intermediate .o files are ever deleted
.PRECIOUS: %.o $(OBJDIR)/boot/%.o $(OBJDIR)/kern/%.o \
$(OBJDIR)/lib/%.o $(OBJDIR)/fs/%.o $(OBJDIR)/net/%.o \
$(OBJDIR)/user/%.o
KERN_CFLAGS := $(CFLAGS) -DJOS_KERNEL -gstabs
USER_CFLAGS := $(CFLAGS) -DJOS_USER -gstabs
# Include Makefrags for subdirectories
include boot/Makefrag
include kern/Makefrag
include lib/Makefrag
include user/Makefrag
include fs/Makefrag
include net/Makefrag
PORT7 := $(shell expr $(GDBPORT) + 1)
PORT80 := $(shell expr $(GDBPORT) + 2)
IMAGES = $(OBJDIR)/kern/kernel.img $(OBJDIR)/fs/fs.img
QEMUOPTS = -hda $(OBJDIR)/kern/kernel.img -hdb $(OBJDIR)/fs/fs.img -serial mon:stdio \
-net user -net nic,model=i82559er -redir tcp:$(PORT7)::7 \
-redir tcp:$(PORT80)::80 $(QEMUEXTRA)
.gdbinit: .gdbinit.tmpl
sed "s/localhost:1234/localhost:$(GDBPORT)/" < $^ > $@
qemu: $(IMAGES)
$(QEMU) $(QEMUOPTS)
qemu-nox: $(IMAGES)
echo "*** Use Ctrl-a x to exit"
$(QEMU) -nographic $(QEMUOPTS)
qemu-gdb: $(IMAGES) .gdbinit
@echo "*** Now run 'gdb'." 1>&2
$(QEMU) $(QEMUOPTS) -s -S -p $(GDBPORT)
qemu-gdb-nox: $(IMAGES) .gdbinit
@echo "*** Now run 'gdb'." 1>&2
$(QEMU) -nographic $(QEMUOPTS) -s -S -p $(GDBPORT)
which-qemu:
@echo $(QEMU)
# For deleting the build
clean:
rm -rf $(OBJDIR)
realclean: clean
rm -rf lab$(LAB).tar.gz jos.out
distclean: realclean
rm -rf conf/gcc.mk
grade: $(LABSETUP)grade-lab$(LAB).sh
$(V)$(MAKE) clean >/dev/null 2>/dev/null
$(MAKE) all
sh $(LABSETUP)grade-lab$(LAB).sh
handin: tarball
@echo Please visit http://pdos.csail.mit.edu/cgi-bin/828handin
@echo and upload lab$(LAB)-handin.tar.gz. Thanks!
tarball: realclean
tar cf - `find . -type f | grep -v '^\.*$$' | grep -v '/CVS/' | grep -v '/\.svn/' | grep -v '/\.git/' | grep -v 'lab[0-9].*\.tar\.gz'` | gzip > lab$(LAB)-handin.tar.gz
# For test runs
run-%:
$(V)rm -f $(OBJDIR)/kern/init.o $(IMAGES)
$(V)$(MAKE) "DEFS=-DTEST=_binary_obj_user_$*_start -DTESTSIZE=_binary_obj_user_$*_size" $(IMAGES)
echo "*** Use Ctrl-a x to exit"
$(QEMU) -nographic $(QEMUOPTS)
xrun-%:
$(V)rm -f $(OBJDIR)/kern/init.o $(IMAGES)
$(V)$(MAKE) "DEFS=-DTEST=_binary_obj_user_$*_start -DTESTSIZE=_binary_obj_user_$*_size" $(IMAGES)
$(QEMU) $(QEMUOPTS)
# For network connections
which-ports:
@echo "Local port $(PORT7) forwards to JOS port 7 (echo server)"
@echo "Local port $(PORT80) forwards to JOS port 80 (web server)"
nc-80:
nc localhost $(PORT80)
nc-7:
nc localhost $(PORT7)
telnet-80:
telnet localhost $(PORT80)
telnet-7:
telnet localhost $(PORT7)
# This magic automatically generates makefile dependencies
# for header files included from C source files we compile,
# and keeps those dependencies up-to-date every time we recompile.
# See 'mergedep.pl' for more information.
$(OBJDIR)/.deps: $(foreach dir, $(OBJDIRS), $(wildcard $(OBJDIR)/$(dir)/*.d))
@mkdir -p $(@D)
@$(PERL) mergedep.pl $@ $^
-include $(OBJDIR)/.deps
always:
@:
.PHONY: all always \
handin tarball clean realclean clean-labsetup distclean grade labsetup