]> git.ipfire.org Git - thirdparty/qemu.git/blame - rules.mak
target/ppc: Fix slbia TLB invalidation gap
[thirdparty/qemu.git] / rules.mak
CommitLineData
17759187 1
5609c512
AB
2# These are used when we want to do substitutions without confusing Make
3NULL :=
4SPACE := $(NULL) #
2f4e4dc2
FZ
5COMMA := ,
6
5ab28867
JQ
7# Don't use implicit rules or variables
8# we have explicit rules for everything
9MAKEFLAGS += -rR
10
11# Files with this suffixes are final, don't try to generate them
12# using implicit rules
a273f4ce
PB
13%/trace-events:
14%.hx:
15%.py:
16%.objs:
5ab28867
JQ
17%.d:
18%.h:
19%.c:
c3dc9fd5 20%.cc:
83f73fce 21%.cpp:
5ab28867
JQ
22%.m:
23%.mak:
dced7eec 24clean-target:
5ab28867 25
7ebf54bc 26# Flags for dependency generation
998b7b1d 27QEMU_DGFLAGS += -MMD -MP -MT $@ -MF $(@D)/$(*F).d
02d5467e 28
ba78db44
DB
29# Compiler searches the source file dir first, but in vpath builds
30# we need to make it search the build dir too, before any other
31# explicit search paths. There are two search locations in the build
32# dir, one absolute and the other relative to the compiler working
33# directory. These are the same for target-independent files, but
34# different for target-dependent ones.
9edc19c9 35QEMU_LOCAL_INCLUDES = -iquote $(BUILD_DIR)/$(@D) -iquote $(@D)
9d9199a0 36
c261d774 37WL_U := -Wl,-u,
4852ee95 38find-symbols = $(if $1, $(sort $(shell $(NM) -P -g $1 | $2)))
c261d774
FZ
39defined-symbols = $(call find-symbols,$1,awk '$$2!="U"{print $$1}')
40undefined-symbols = $(call find-symbols,$1,awk '$$2=="U"{print $$1}')
41
42# All the .mo objects in -m variables are also added into corresponding -y
43# variable in unnest-vars, but filtered out here, when LINK is called.
44#
45# The .mo objects are supposed to be linked as a DSO, for module build. So here
46# they are only used as a placeholders to generate those "archive undefined"
47# symbol options (-Wl,-u,$symbol_name), which are the archive functions
48# referenced by the code in the DSO.
49#
50# Also the presence in -y variables will also guarantee they are built before
51# linking executables that will load them. So we can look up symbol reference
52# in LINK.
53#
54# This is necessary because the exectuable itself may not use the function, in
55# which case the function would not be linked in. Then the DSO loading will
56# fail because of the missing symbol.
57process-archive-undefs = $(filter-out %.a %.mo,$1) \
58 $(addprefix $(WL_U), \
59 $(filter $(call defined-symbols,$(filter %.a, $1)), \
60 $(call undefined-symbols,$(filter %.mo,$1)))) \
61 $(filter %.a,$1)
62
5b1b6dbd 63extract-libs = $(strip $(foreach o,$(filter-out %.mo,$1),$($o-libs)))
17969268
FZ
64expand-objs = $(strip $(sort $(filter %.o,$1)) \
65 $(foreach o,$(filter %.mo,$1),$($o-objs)) \
66 $(filter-out %.o %.mo,$1))
5c0d52bc 67
0e8c9214 68%.o: %.c
ba78db44
DB
69 $(call quiet-command,$(CC) $(QEMU_LOCAL_INCLUDES) $(QEMU_INCLUDES) \
70 $(QEMU_CFLAGS) $(QEMU_DGFLAGS) $(CFLAGS) $($@-cflags) \
71 -c -o $@ $<,"CC","$(TARGET_DIR)$@")
6821cdc7 72%.o: %.rc
0bdb12c7 73 $(call quiet-command,$(WINDRES) -I. -o $@ $<,"RC","$(TARGET_DIR)$@")
17759187 74
3144f78b
PM
75# If we have a CXX we might have some C++ objects, in which case we
76# must link with the C++ compiler, not the plain C compiler.
77LINKPROG = $(or $(CXX),$(CC))
78
db5adeaa 79LINK = $(call quiet-command, $(LINKPROG) $(CFLAGS) $(QEMU_LDFLAGS) -o $@ \
c261d774 80 $(call process-archive-undefs, $1) \
0bdb12c7 81 $(version-obj-y) $(call extract-libs,$1) $(LIBS),"LINK","$(TARGET_DIR)$@")
44dc0ca3 82
5f6f0e27 83%.o: %.S
ba78db44
DB
84 $(call quiet-command,$(CCAS) $(QEMU_LOCAL_INCLUDES) $(QEMU_INCLUDES) \
85 $(QEMU_CFLAGS) $(QEMU_DGFLAGS) $(CFLAGS) \
86 -c -o $@ $<,"CCAS","$(TARGET_DIR)$@")
17759187 87
c3dc9fd5 88%.o: %.cc
ba78db44
DB
89 $(call quiet-command,$(CXX) $(QEMU_LOCAL_INCLUDES) $(QEMU_INCLUDES) \
90 $(QEMU_CXXFLAGS) $(QEMU_DGFLAGS) $(CFLAGS) $($@-cflags) \
91 -c -o $@ $<,"CXX","$(TARGET_DIR)$@")
c3dc9fd5 92
83f73fce 93%.o: %.cpp
ba78db44
DB
94 $(call quiet-command,$(CXX) $(QEMU_LOCAL_INCLUDES) $(QEMU_INCLUDES) \
95 $(QEMU_CXXFLAGS) $(QEMU_DGFLAGS) $(CFLAGS) $($@-cflags) \
96 -c -o $@ $<,"CXX","$(TARGET_DIR)$@")
83f73fce 97
17759187 98%.o: %.m
ba78db44
DB
99 $(call quiet-command,$(OBJCC) $(QEMU_LOCAL_INCLUDES) $(QEMU_INCLUDES) \
100 $(QEMU_CFLAGS) $(QEMU_DGFLAGS) $(CFLAGS) $($@-cflags) \
101 -c -o $@ $<,"OBJC","$(TARGET_DIR)$@")
17759187 102
2c13ec50 103%.o: %.dtrace
0bdb12c7 104 $(call quiet-command,dtrace -o $@ -G -s $<,"GEN","$(TARGET_DIR)$@")
2c13ec50 105
d24697e1
FZ
106DSO_OBJ_CFLAGS := -fPIC -DBUILD_DSO
107module-common.o: CFLAGS += $(DSO_OBJ_CFLAGS)
db5adeaa 108%$(DSOSUF): QEMU_LDFLAGS += $(LDFLAGS_SHARED)
c261d774 109%$(DSOSUF): %.mo
17969268 110 $(call LINK,$^)
e26110cf 111 @# Copy to build root so modules can be loaded when program started without install
0bdb12c7 112 $(if $(findstring /,$@),$(call quiet-command,cp $@ $(subst /,-,$@),"CP","$(subst /,-,$@)"))
17969268 113
c261d774 114
7ecf44a5 115LD_REL := $(CC) -nostdlib $(LD_REL_FLAGS)
c261d774
FZ
116
117%.mo:
0bdb12c7 118 $(call quiet-command,$(LD_REL) -o $@ $^,"LD","$(TARGET_DIR)$@")
c261d774 119
17969268
FZ
120.PHONY: modules
121modules:
122
3aa892d7 123%$(EXESUF): %.o
cefa2bbd 124 $(call LINK,$(filter %.o %.a %.mo, $^))
4f188f88 125
93a0dba7 126%.a:
0bdb12c7 127 $(call quiet-command,rm -f $@ && $(AR) rcs $@ $^,"AR","$(TARGET_DIR)$@")
93a0dba7 128
0bdb12c7
PM
129# Usage: $(call quiet-command,command and args,"NAME","args to print")
130# This will run "command and args", and either:
131# if V=1 just print the whole command and args
132# otherwise print the 'quiet' output in the format " NAME args to print"
133# NAME should be a short name of the command, 7 letters or fewer.
134# If called with only a single argument, will print nothing in quiet mode.
9df43317
PB
135quiet-command-run = $(if $(V),,$(if $2,printf " %-7s %s\n" $2 $3 && ))$1
136quiet-@ = $(if $(V),,@)
137quiet-command = $(quiet-@)$(call quiet-command-run,$1,$2,$3)
70071e17
JQ
138
139# cc-option
8a2e6ab5 140# Usage: CFLAGS+=$(call cc-option, -falign-functions=0, -malign-functions=0)
70071e17 141
fc3baad7
TM
142cc-option = $(if $(shell $(CC) $1 $2 -S -o /dev/null -xc /dev/null \
143 >/dev/null 2>&1 && echo OK), $2, $3)
036999e9
PB
144cc-c-option = $(if $(shell $(CC) $1 $2 -c -o /dev/null -xc /dev/null \
145 >/dev/null 2>&1 && echo OK), $2, $3)
1215c6e7 146
d52c454a 147VPATH_SUFFIXES = %.c %.h %.S %.cc %.cpp %.m %.mak %.texi %.sh %.rc Kconfig% %.json.in
288e7bcc 148set-vpath = $(if $1,$(foreach PATTERN,$(VPATH_SUFFIXES),$(eval vpath $(PATTERN) $1)))
076d2471 149
0d659426
MT
150# install-prog list, dir
151define install-prog
152 $(INSTALL_DIR) "$2"
153 $(INSTALL_PROG) $1 "$2"
154 $(if $(STRIP),$(STRIP) $(foreach T,$1,"$2/$(notdir $T)"),)
155endef
156
2b2e59e6
PB
157# find-in-path
158# Usage: $(call find-in-path, prog)
159# Looks in the PATH if the argument contains no slash, else only considers one
160# specific directory. Returns an # empty string if the program doesn't exist
161# there.
88071589 162find-in-path = $(if $(findstring /, $1), \
2b2e59e6
PB
163 $(wildcard $1), \
164 $(wildcard $(patsubst %, %/$1, $(subst :, ,$(PATH)))))
165
837a2e26
PM
166# Logical functions (for operating on y/n values like CONFIG_FOO vars)
167# Inputs to these must be either "y" (true) or "n" or "" (both false)
168# Output is always either "y" or "n".
169# Usage: $(call land,$(CONFIG_FOO),$(CONFIG_BAR))
170# Logical NOT
171lnot = $(if $(subst n,,$1),n,y)
172# Logical AND
173land = $(if $(findstring yy,$1$2),y,n)
174# Logical OR
175lor = $(if $(findstring y,$1$2),y,n)
176# Logical XOR (note that this is the inverse of leqv)
177lxor = $(if $(filter $(call lnot,$1),$(call lnot,$2)),n,y)
178# Logical equivalence (note that leqv "","n" is true)
179leqv = $(if $(filter $(call lnot,$1),$(call lnot,$2)),y,n)
180# Logical if: like make's $(if) but with an leqv-like test
181lif = $(if $(subst n,,$1),$2,$3)
182
9ef622e3
PM
183# String testing functions: inputs to these can be any string;
184# the output is always either "y" or "n". Leading and trailing whitespace
185# is ignored when comparing strings.
186# String equality
187eq = $(if $(subst $2,,$1)$(subst $1,,$2),n,y)
188# String inequality
189ne = $(if $(subst $2,,$1)$(subst $1,,$2),y,n)
190# Emptiness/non-emptiness tests:
191isempty = $(if $1,n,y)
192notempty = $(if $1,y,n)
193
c0424934
LV
194# Generate files with tracetool
195TRACETOOL=$(PYTHON) $(SRC_PATH)/scripts/tracetool.py
196
1215c6e7
JQ
197# Generate timestamp files for .h include files
198
4b25966a
MT
199config-%.h: config-%.h-timestamp
200 @cmp $< $@ >/dev/null 2>&1 || cp $< $@
1215c6e7 201
55335015 202config-%.h-timestamp: config-%.mak $(SRC_PATH)/scripts/create_config
0bdb12c7 203 $(call quiet-command, sh $(SRC_PATH)/scripts/create_config < $< > $@,"GEN","$(TARGET_DIR)config-$*.h")
7dbbbb0c 204
7586317b
MT
205.PHONY: clean-timestamp
206clean-timestamp:
207 rm -f *.timestamp
208clean: clean-timestamp
209
7dbbbb0c
MT
210# will delete the target of a rule if commands exit with a nonzero exit status
211.DELETE_ON_ERROR:
e05804ee 212
1c33ac57
FZ
213# save-vars
214# Usage: $(call save-vars, vars)
215# Save each variable $v in $vars as save-vars-$v, save their object's
5ffb3505
PB
216# variables, then clear $v. saved-vars-$v contains the variables that
217# where saved for the objects, in order to speedup load-vars.
1c33ac57
FZ
218define save-vars
219 $(foreach v,$1,
220 $(eval save-vars-$v := $(value $v))
5ffb3505
PB
221 $(eval saved-vars-$v := $(foreach o,$($v), \
222 $(if $($o-cflags), $o-cflags $(eval save-vars-$o-cflags := $($o-cflags))$(eval $o-cflags := )) \
223 $(if $($o-libs), $o-libs $(eval save-vars-$o-libs := $($o-libs))$(eval $o-libs := )) \
224 $(if $($o-objs), $o-objs $(eval save-vars-$o-objs := $($o-objs))$(eval $o-objs := ))))
1c33ac57 225 $(eval $v := ))
5c0d52bc
FZ
226endef
227
1c33ac57
FZ
228# load-vars
229# Usage: $(call load-vars, vars, add_var)
230# Load the saved value for each variable in @vars, and the per object
231# variables.
232# Append @add_var's current value to the loaded value.
233define load-vars
234 $(eval $2-new-value := $(value $2))
235 $(foreach v,$1,
236 $(eval $v := $(value save-vars-$v))
5ffb3505
PB
237 $(foreach o,$(saved-vars-$v),
238 $(eval $o := $(save-vars-$o)) $(eval save-vars-$o := ))
239 $(eval save-vars-$v := )
240 $(eval saved-vars-$v := ))
1c33ac57 241 $(eval $2 := $(value $2) $($2-new-value))
e05804ee
PB
242endef
243
1c33ac57
FZ
244# fix-paths
245# Usage: $(call fix-paths, obj_path, src_path, vars)
246# Add prefix @obj_path to all objects in @vars, and add prefix @src_path to all
247# directories in @vars.
248define fix-paths
249 $(foreach v,$3,
250 $(foreach o,$($v),
251 $(if $($o-libs),
252 $(eval $1$o-libs := $($o-libs)))
253 $(if $($o-cflags),
254 $(eval $1$o-cflags := $($o-cflags)))
255 $(if $($o-objs),
256 $(eval $1$o-objs := $(addprefix $1,$($o-objs)))))
257 $(eval $v := $(addprefix $1,$(filter-out %/,$($v))) \
258 $(addprefix $2,$(filter %/,$($v)))))
e05804ee
PB
259endef
260
1c33ac57
FZ
261# unnest-var-recursive
262# Usage: $(call unnest-var-recursive, obj_prefix, vars, var)
263#
264# Unnest @var by including subdir Makefile.objs, while protect others in @vars
265# unchanged.
266#
267# @obj_prefix is the starting point of object path prefix.
268#
269define unnest-var-recursive
270 $(eval dirs := $(sort $(filter %/,$($3))))
271 $(eval $3 := $(filter-out %/,$($3)))
272 $(foreach d,$(dirs:%/=%),
273 $(call save-vars,$2)
274 $(eval obj := $(if $1,$1/)$d)
275 $(eval -include $(SRC_PATH)/$d/Makefile.objs)
276 $(call fix-paths,$(if $1,$1/)$d/,$d/,$2)
277 $(call load-vars,$2,$3)
278 $(call unnest-var-recursive,$1,$2,$3))
17969268
FZ
279endef
280
1c33ac57
FZ
281# unnest-vars
282# Usage: $(call unnest-vars, obj_prefix, vars)
283#
284# @obj_prefix: object path prefix, can be empty, or '..', etc. Don't include
285# ending '/'.
286#
287# @vars: the list of variable names to unnest.
288#
289# This macro will scan subdirectories's Makefile.objs, include them, to build
290# up each variable listed in @vars.
291#
292# Per object and per module cflags and libs are saved with relative path fixed
293# as well, those variables include -libs, -cflags and -objs. Items in -objs are
294# also fixed to relative path against SRC_PATH plus the prefix @obj_prefix.
295#
296# All nested variables postfixed by -m in names are treated as DSO variables,
297# and will be built as modules, if enabled.
298#
299# A simple example of the unnest:
300#
301# obj_prefix = ..
302# vars = hot cold
303# hot = fire.o sun.o season/
304# cold = snow.o water/ season/
305#
306# Unnest through a faked source directory structure:
307#
308# SRC_PATH
309# ├── water
310# │ └── Makefile.objs──────────────────┐
311# │ │ hot += steam.o │
312# │ │ cold += ice.mo │
313# │ │ ice.mo-libs := -licemaker │
314# │ │ ice.mo-objs := ice1.o ice2.o │
315# │ └──────────────────────────────┘
316# │
317# └── season
318# └── Makefile.objs──────┐
319# │ hot += summer.o │
320# │ cold += winter.o │
321# └──────────────────┘
322#
323# In the end, the result will be:
324#
325# hot = ../fire.o ../sun.o ../season/summer.o
326# cold = ../snow.o ../water/ice.mo ../season/winter.o
327# ../water/ice.mo-libs = -licemaker
328# ../water/ice.mo-objs = ../water/ice1.o ../water/ice2.o
329#
9ab71e5e 330# Note that 'hot' didn't include 'water/' in the input, so 'steam.o' is not
1c33ac57
FZ
331# included.
332#
e05804ee 333define unnest-vars
1c33ac57
FZ
334 # In the case of target build (i.e. $1 == ..), fix path for top level
335 # Makefile.objs objects
336 $(if $1,$(call fix-paths,$1/,,$2))
337
338 # Descend and include every subdir Makefile.objs
c88f68ec
FZ
339 $(foreach v, $2,
340 $(call unnest-var-recursive,$1,$2,$v)
341 # Pass the .mo-cflags and .mo-libs along to its member objects
342 $(foreach o, $(filter %.mo,$($v)),
343 $(foreach p,$($o-objs),
344 $(if $($o-cflags), $(eval $p-cflags += $($o-cflags)))
345 $(if $($o-libs), $(eval $p-libs += $($o-libs))))))
346
347 # For all %.mo objects that are directly added into -y, just expand them
348 $(foreach v,$(filter %-y,$2),
349 $(eval $v := $(foreach o,$($v),$(if $($o-objs),$($o-objs),$o))))
1c33ac57
FZ
350
351 $(foreach v,$(filter %-m,$2),
352 # All .o found in *-m variables are single object modules, create .mo
353 # for them
354 $(foreach o,$(filter %.o,$($v)),
355 $(eval $(o:%.o=%.mo)-objs := $o))
356 # Now unify .o in -m variable to .mo
357 $(eval $v := $($v:%.o=%.mo))
358 $(eval modules-m += $($v))
359
360 # For module build, build shared libraries during "make modules"
361 # For non-module build, add -m to -y
362 $(if $(CONFIG_MODULES),
c261d774 363 $(foreach o,$($v),
d24697e1 364 $(eval $($o-objs): CFLAGS += $(DSO_OBJ_CFLAGS))
c261d774
FZ
365 $(eval $o: $($o-objs)))
366 $(eval $(patsubst %-m,%-y,$v) += $($v))
1c33ac57
FZ
367 $(eval modules: $($v:%.mo=%$(DSOSUF))),
368 $(eval $(patsubst %-m,%-y,$v) += $(call expand-objs, $($v)))))
369
370 # Post-process all the unnested vars
371 $(foreach v,$2,
372 $(foreach o, $(filter %.mo,$($v)),
373 # Find all the .mo objects in variables and add dependency rules
374 # according to .mo-objs. Report error if not set
375 $(if $($o-objs),
376 $(eval $(o:%.mo=%$(DSOSUF)): module-common.o $($o-objs)),
c88f68ec 377 $(error $o added in $v but $o-objs is not set)))
1c33ac57
FZ
378 $(shell mkdir -p ./ $(sort $(dir $($v))))
379 # Include all the .d files
27fa7479 380 $(eval -include $(patsubst %.o,%.d,$(patsubst %.mo,%.d,$($v))))
1c33ac57 381 $(eval $v := $(filter-out %/,$($v))))
e05804ee 382endef
76480423
MAL
383
384TEXI2MAN = $(call quiet-command, \
d59157ea 385 perl -Ww -- $(SRC_PATH)/scripts/texi2pod.pl $(TEXI2PODFLAGS) $< $@.pod && \
76480423
MAL
386 $(POD2MAN) --section=$(subst .,,$(suffix $@)) --center=" " --release=" " $@.pod > $@, \
387 "GEN","$@")
388
389%.1:
390 $(call TEXI2MAN)
56e8bdd4
MAL
391%.7:
392 $(call TEXI2MAN)
76480423
MAL
393%.8:
394 $(call TEXI2MAN)
d52c454a
MAL
395
396GEN_SUBST = $(call quiet-command, \
397 sed -e "s!@libexecdir@!$(libexecdir)!g" < $< > $@, \
398 "GEN","$@")
399
400%.json: %.json.in
401 $(call GEN_SUBST)
e0f3728d
PM
402
403# Support for building multiple output files by atomically executing
404# a single rule which depends on several input files (so the rule
405# will be executed exactly once, not once per output file, and
406# not multiple times in parallel.) For more explanation see:
407# https://www.cmcrossroads.com/article/atomic-rules-gnu-make
408
409# Given a space-separated list of filenames, create the name of
410# a 'sentinel' file to use to indicate that they have been built.
411# We use fixed text on the end to avoid accidentally triggering
412# automatic pattern rules, and . on the start to make the file
413# not show up in ls output.
414sentinel = .$(subst $(SPACE),_,$(subst /,_,$1)).sentinel.
415
416# Define an atomic rule that builds multiple outputs from multiple inputs.
417# To use:
418# $(call atomic,out1 out2 ...,in1 in2 ...)
419# <TAB>rule to do the operation
420#
421# Make 4.3 will have native support for this, and you would be able
422# to instead write:
423# out1 out2 ... &: in1 in2 ...
424# <TAB>rule to do the operation
425#
426# The way this works is that it creates a make rule
427# "out1 out2 ... : sentinel-file ; @:" which says that the sentinel
428# depends on the dependencies, and the rule to do that is "do nothing".
429# Then we have a rule
430# "sentinel-file : in1 in2 ..."
431# whose commands start with "touch sentinel-file" and then continue
432# with the rule text provided by the user of this 'atomic' function.
433# The foreach... is there to delete the sentinel file if any of the
434# output files don't exist, so that we correctly rebuild in that situation.
435atomic = $(eval $1: $(call sentinel,$1) ; @:) \
436 $(call sentinel,$1) : $2 ; @touch $$@ \
437 $(foreach t,$1,$(if $(wildcard $t),,$(shell rm -f $(call sentinel,$1))))
1a28f878
PMD
438
439print-%:
440 @echo '$*=$($*)'