Merge remote-tracking branch 'remotes/kevin/tags/for-upstream' into staging
[qemu.git] / rules.mak
1
2 # Don't use implicit rules or variables
3 # we have explicit rules for everything
4 MAKEFLAGS += -rR
5
6 # Files with this suffixes are final, don't try to generate them
7 # using implicit rules
8 %.d:
9 %.h:
10 %.c:
11 %.cc:
12 %.cpp:
13 %.m:
14 %.mak:
15
16 # Flags for C++ compilation
17 QEMU_CXXFLAGS = -D__STDC_LIMIT_MACROS $(filter-out -Wstrict-prototypes -Wmissing-prototypes -Wnested-externs -Wold-style-declaration -Wold-style-definition -Wredundant-decls, $(QEMU_CFLAGS))
18
19 # Flags for dependency generation
20 QEMU_DGFLAGS += -MMD -MP -MT $@ -MF $(*D)/$(*F).d
21
22 # Same as -I$(SRC_PATH) -I., but for the nested source/object directories
23 QEMU_INCLUDES += -I$(<D) -I$(@D)
24
25 maybe-add = $(filter-out $1, $2) $1
26 extract-libs = $(strip $(sort $(foreach o,$1,$($o-libs))) \
27 $(foreach o,$(call expand-objs,$1),$($o-libs)))
28 expand-objs = $(strip $(sort $(filter %.o,$1)) \
29 $(foreach o,$(filter %.mo,$1),$($o-objs)) \
30 $(filter-out %.o %.mo,$1))
31
32 %.o: %.c
33 $(call quiet-command,$(CC) $(QEMU_INCLUDES) $(QEMU_CFLAGS) $(QEMU_DGFLAGS) $(CFLAGS) $($@-cflags) -c -o $@ $<," CC $(TARGET_DIR)$@")
34 %.o: %.rc
35 $(call quiet-command,$(WINDRES) -I. -o $@ $<," RC $(TARGET_DIR)$@")
36
37 # If we have a CXX we might have some C++ objects, in which case we
38 # must link with the C++ compiler, not the plain C compiler.
39 LINKPROG = $(or $(CXX),$(CC))
40
41 ifeq ($(LIBTOOL),)
42 LINK = $(call quiet-command,$(LINKPROG) $(QEMU_CFLAGS) $(CFLAGS) $(LDFLAGS) -o $@ \
43 $(call expand-objs,$1) $(version-obj-y) \
44 $(call extract-libs,$1) $(LIBS)," LINK $(TARGET_DIR)$@")
45 else
46 LIBTOOL += $(if $(V),,--quiet)
47 %.lo: %.c
48 $(call quiet-command,$(LIBTOOL) --mode=compile --tag=CC $(CC) $(QEMU_INCLUDES) $(QEMU_CFLAGS) $(QEMU_DGFLAGS) $(CFLAGS) -c -o $@ $<," lt CC $@")
49 %.lo: %.rc
50 $(call quiet-command,$(LIBTOOL) --mode=compile --tag=RC $(WINDRES) -I. -o $@ $<,"lt RC $(TARGET_DIR)$@")
51 %.lo: %.dtrace
52 $(call quiet-command,$(LIBTOOL) --mode=compile --tag=CC dtrace -o $@ -G -s $<, " lt GEN $(TARGET_DIR)$@")
53
54 LINK = $(call quiet-command,\
55 $(if $(filter %.lo %.la,$1),$(LIBTOOL) --mode=link --tag=CC \
56 )$(LINKPROG) $(QEMU_CFLAGS) $(CFLAGS) $(LDFLAGS) -o $@ \
57 $(call expand-objs,$1) \
58 $(if $(filter %.lo %.la,$1),$(version-lobj-y),$(version-obj-y)) \
59 $(if $(filter %.lo %.la,$1),$(LIBTOOLFLAGS)) \
60 $(call extract-libs,$1) $(LIBS),$(if $(filter %.lo %.la,$1),"lt LINK ", " LINK ")"$(TARGET_DIR)$@")
61 endif
62
63 %.asm: %.S
64 $(call quiet-command,$(CPP) $(QEMU_INCLUDES) $(QEMU_CFLAGS) $(QEMU_DGFLAGS) $(CFLAGS) -o $@ $<," CPP $(TARGET_DIR)$@")
65
66 %.o: %.asm
67 $(call quiet-command,$(AS) $(ASFLAGS) -o $@ $<," AS $(TARGET_DIR)$@")
68
69 %.o: %.cc
70 $(call quiet-command,$(CXX) $(QEMU_INCLUDES) $(QEMU_CXXFLAGS) $(QEMU_DGFLAGS) $(CFLAGS) -c -o $@ $<," CXX $(TARGET_DIR)$@")
71
72 %.o: %.cpp
73 $(call quiet-command,$(CXX) $(QEMU_INCLUDES) $(QEMU_CXXFLAGS) $(QEMU_DGFLAGS) $(CFLAGS) -c -o $@ $<," CXX $(TARGET_DIR)$@")
74
75 %.o: %.m
76 $(call quiet-command,$(OBJCC) $(QEMU_INCLUDES) $(QEMU_CFLAGS) $(QEMU_DGFLAGS) $(CFLAGS) -c -o $@ $<," OBJC $(TARGET_DIR)$@")
77
78 %.o: %.dtrace
79 $(call quiet-command,dtrace -o $@ -G -s $<, " GEN $(TARGET_DIR)$@")
80
81 DSO_CFLAGS := -fPIC -DBUILD_DSO
82 %$(DSOSUF): LDFLAGS += $(LDFLAGS_SHARED)
83 %$(DSOSUF): %.mo libqemustub.a
84 $(call LINK,$^)
85 @# Copy to build root so modules can be loaded when program started without install
86 $(if $(findstring /,$@),$(call quiet-command,cp $@ $(subst /,-,$@), " CP $(subst /,-,$@)"))
87
88 .PHONY: modules
89 modules:
90
91 %$(EXESUF): %.o
92 $(call LINK,$^)
93
94 %.a:
95 $(call quiet-command,rm -f $@ && $(AR) rcs $@ $^," AR $(TARGET_DIR)$@")
96
97 quiet-command = $(if $(V),$1,$(if $(2),@echo $2 && $1, @$1))
98
99 # cc-option
100 # Usage: CFLAGS+=$(call cc-option, -falign-functions=0, -malign-functions=0)
101
102 cc-option = $(if $(shell $(CC) $1 $2 -S -o /dev/null -xc /dev/null \
103 >/dev/null 2>&1 && echo OK), $2, $3)
104
105 VPATH_SUFFIXES = %.c %.h %.S %.cc %.cpp %.m %.mak %.texi %.sh %.rc
106 set-vpath = $(if $1,$(foreach PATTERN,$(VPATH_SUFFIXES),$(eval vpath $(PATTERN) $1)))
107
108 # find-in-path
109 # Usage: $(call find-in-path, prog)
110 # Looks in the PATH if the argument contains no slash, else only considers one
111 # specific directory. Returns an # empty string if the program doesn't exist
112 # there.
113 find-in-path = $(if $(find-string /, $1), \
114 $(wildcard $1), \
115 $(wildcard $(patsubst %, %/$1, $(subst :, ,$(PATH)))))
116
117 # Logical functions (for operating on y/n values like CONFIG_FOO vars)
118 # Inputs to these must be either "y" (true) or "n" or "" (both false)
119 # Output is always either "y" or "n".
120 # Usage: $(call land,$(CONFIG_FOO),$(CONFIG_BAR))
121 # Logical NOT
122 lnot = $(if $(subst n,,$1),n,y)
123 # Logical AND
124 land = $(if $(findstring yy,$1$2),y,n)
125 # Logical OR
126 lor = $(if $(findstring y,$1$2),y,n)
127 # Logical XOR (note that this is the inverse of leqv)
128 lxor = $(if $(filter $(call lnot,$1),$(call lnot,$2)),n,y)
129 # Logical equivalence (note that leqv "","n" is true)
130 leqv = $(if $(filter $(call lnot,$1),$(call lnot,$2)),y,n)
131 # Logical if: like make's $(if) but with an leqv-like test
132 lif = $(if $(subst n,,$1),$2,$3)
133
134 # String testing functions: inputs to these can be any string;
135 # the output is always either "y" or "n". Leading and trailing whitespace
136 # is ignored when comparing strings.
137 # String equality
138 eq = $(if $(subst $2,,$1)$(subst $1,,$2),n,y)
139 # String inequality
140 ne = $(if $(subst $2,,$1)$(subst $1,,$2),y,n)
141 # Emptiness/non-emptiness tests:
142 isempty = $(if $1,n,y)
143 notempty = $(if $1,y,n)
144
145 # Generate files with tracetool
146 TRACETOOL=$(PYTHON) $(SRC_PATH)/scripts/tracetool.py
147
148 # Generate timestamp files for .h include files
149
150 config-%.h: config-%.h-timestamp
151 @cmp $< $@ >/dev/null 2>&1 || cp $< $@
152
153 config-%.h-timestamp: config-%.mak
154 $(call quiet-command, sh $(SRC_PATH)/scripts/create_config < $< > $@, " GEN $(TARGET_DIR)config-$*.h")
155
156 .PHONY: clean-timestamp
157 clean-timestamp:
158 rm -f *.timestamp
159 clean: clean-timestamp
160
161 # will delete the target of a rule if commands exit with a nonzero exit status
162 .DELETE_ON_ERROR:
163
164 # magic to descend into other directories
165
166 define push-var
167 $(eval save-$2-$1 = $(value $1))
168 $(eval $1 :=)
169 endef
170
171 define pop-var
172 $(eval subdir-$2-$1 := $(if $(filter $2,$(save-$2-$1)),$(addprefix $2,$($1))))
173 $(eval $1 = $(value save-$2-$1) $$(subdir-$2-$1))
174 $(eval save-$2-$1 :=)
175 endef
176
177 define fix-obj-vars
178 $(foreach v,$($1), \
179 $(if $($v-cflags), \
180 $(eval $2$v-cflags := $($v-cflags)) \
181 $(eval $v-cflags := )) \
182 $(if $($v-libs), \
183 $(eval $2$v-libs := $($v-libs)) \
184 $(eval $v-libs := )) \
185 $(if $($v-objs), \
186 $(eval $2$v-objs := $(addprefix $2,$($v-objs))) \
187 $(eval $v-objs := )))
188 endef
189
190 define unnest-dir
191 $(foreach var,$(nested-vars),$(call push-var,$(var),$1/))
192 $(eval obj-parent-$1 := $(obj))
193 $(eval obj := $(if $(obj),$(obj)/$1,$1))
194 $(eval include $(SRC_PATH)/$1/Makefile.objs)
195 $(foreach v,$(nested-vars),$(call fix-obj-vars,$v,$(if $(obj),$(obj)/)))
196 $(eval obj := $(obj-parent-$1))
197 $(eval obj-parent-$1 := )
198 $(foreach var,$(nested-vars),$(call pop-var,$(var),$1/))
199 endef
200
201 define unnest-vars-1
202 $(eval nested-dirs := $(filter-out \
203 $(old-nested-dirs), \
204 $(sort $(foreach var,$(nested-vars), $(filter %/, $($(var)))))))
205 $(if $(nested-dirs),
206 $(foreach dir,$(nested-dirs),$(call unnest-dir,$(patsubst %/,%,$(dir))))
207 $(eval old-nested-dirs := $(old-nested-dirs) $(nested-dirs))
208 $(call unnest-vars-1))
209 endef
210
211 define process-modules
212 $(foreach o,$(filter %.o,$($1)),
213 $(eval $(patsubst %.o,%.mo,$o): $o) \
214 $(eval $(patsubst %.o,%.mo,$o)-objs := $o))
215 $(foreach o,$(filter-out $(modules-m), $(patsubst %.o,%.mo,$($1))), \
216 $(eval $o-objs += module-common.o)
217 $(eval $o: $($o-objs))
218 $(eval modules-objs-m += $($o-objs))
219 $(eval modules-m += $o)
220 $(eval $o:; $$(call quiet-command,touch $$@," GEN $$(TARGET_DIR)$$@"))
221 $(if $(CONFIG_MODULES),$(eval modules: $(patsubst %.mo,%$(DSOSUF),$o)))) \
222 $(eval modules-objs-m := $(sort $(modules-objs-m)))
223 $(foreach o,$(modules-objs-m), \
224 $(if $(CONFIG_MODULES),$(eval $o-cflags := $(call maybe-add, $(DSO_CFLAGS), $($o-cflags)))))
225 $(eval $(patsubst %-m,%-$(call lnot,$(CONFIG_MODULES)),$1) += $($1))
226 endef
227
228 define unnest-vars
229 $(eval obj := $1)
230 $(eval nested-vars := $2)
231 $(eval old-nested-dirs := )
232 $(call unnest-vars-1)
233 $(if $1,$(foreach v,$(nested-vars),$(eval \
234 $v := $(addprefix $1/,$($v)))))
235 $(foreach var,$(nested-vars),$(eval $(var) := $(filter-out %/, $($(var)))))
236 $(shell mkdir -p $(sort $(foreach var,$(nested-vars),$(dir $($(var))))))
237 $(foreach var,$(nested-vars), $(eval \
238 -include $(addsuffix *.d, $(sort $(dir $($(var)))))))
239 $(foreach v,$(filter %-m,$(nested-vars)), \
240 $(call process-modules,$v))
241 endef