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libqemuutil, qapi, trace: convert to meson

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This shows how to do some "computations" in meson.build using its array
and dictionary data structures, and also a basic usage of the sourceset
module for conditional compilation.

Notice the new "if have_system" part of util/meson.build, which fixes
a bug in the old build system was buggy: util/dbus.c was built even for
non-softmmu builds, but the dependency on -lgio was lost when the linking
was done through libqemuutil.a.  Because all of its users required gio
otherwise, the bug was hidden.  Meson instead propagates libqemuutil's
dependencies down to its users, and shows the problem.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Paolo Bonzini
2020-08-19 08:44:56 -04:00
parent 245dac4a1b
commit a81df1b68b
27 changed files with 597 additions and 525 deletions
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51
trace/Makefile.objs
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@ -1,59 +1,8 @@
# -*- mode: makefile -*-
$(BUILD_DIR)/trace-events-all: $(trace-events-files)
$(call quiet-command,cat $^ > $@)
##################################################
# Translation level
$(obj)/generated-helpers-wrappers.h: $(obj)/generated-helpers-wrappers.h-timestamp
@cmp $< $@ >/dev/null 2>&1 || cp $< $@
$(obj)/generated-helpers-wrappers.h-timestamp: $(SRC_PATH)/trace-events $(BUILD_DIR)/config-host.mak $(tracetool-y)
$(call quiet-command,$(TRACETOOL) \
--group=root \
--format=tcg-helper-wrapper-h \
--backend=$(TRACE_BACKENDS) \
$< > $@,"GEN","$(patsubst %-timestamp,%,$@)")
$(obj)/generated-helpers.h: $(obj)/generated-helpers.h-timestamp
@cmp $< $@ >/dev/null 2>&1 || cp $< $@
$(obj)/generated-helpers.h-timestamp: $(SRC_PATH)/trace-events $(BUILD_DIR)/config-host.mak $(tracetool-y)
$(call quiet-command,$(TRACETOOL) \
--group=root \
--format=tcg-helper-h \
--backend=$(TRACE_BACKENDS) \
$< > $@,"GEN","$(patsubst %-timestamp,%,$@)")
$(obj)/generated-helpers.c: $(obj)/generated-helpers.c-timestamp
@cmp $< $@ >/dev/null 2>&1 || cp $< $@
$(obj)/generated-helpers.c-timestamp: $(SRC_PATH)/trace-events $(BUILD_DIR)/config-host.mak $(tracetool-y)
$(call quiet-command,$(TRACETOOL) \
--group=root \
--format=tcg-helper-c \
--backend=$(TRACE_BACKENDS) \
$< > $@,"GEN","$(patsubst %-timestamp,%,$@)")
$(obj)/generated-helpers.o: $(obj)/generated-helpers.c
obj-y += generated-helpers.o
$(obj)/generated-tcg-tracers.h: $(obj)/generated-tcg-tracers.h-timestamp
@cmp $< $@ >/dev/null 2>&1 || cp $< $@
$(obj)/generated-tcg-tracers.h-timestamp: $(SRC_PATH)/trace-events $(BUILD_DIR)/config-host.mak $(tracetool-y)
$(call quiet-command,$(TRACETOOL) \
--group=root \
--format=tcg-h \
--backend=$(TRACE_BACKENDS) \
$< > $@,"GEN","$(patsubst %-timestamp,%,$@)")
######################################################################
# Backend code
util-obj-$(CONFIG_TRACE_SIMPLE) += simple.o
util-obj-$(CONFIG_TRACE_FTRACE) += ftrace.o
util-obj-y += control.o
obj-y += control-target.o
util-obj-y += qmp.o

76
trace/meson.build Normal file
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@ -0,0 +1,76 @@
trace_events_files = []
foreach dir : [ '.' ] + trace_events_subdirs
trace_events_file = meson.source_root() / dir / 'trace-events'
trace_events_files += [ trace_events_file ]
group_name = dir == '.' ? 'root' : dir.underscorify()
group = '--group=' + group_name
fmt = '@0@-' + group_name + '.@1@'
trace_h = custom_target(fmt.format('trace', 'h'),
output: fmt.format('trace', 'h'),
input: trace_events_file,
command: [ tracetool, group, '--format=h', '@INPUT@' ],
capture: true)
genh += trace_h
trace_c = custom_target(fmt.format('trace', 'c'),
output: fmt.format('trace', 'c'),
input: trace_events_file,
command: [ tracetool, group, '--format=c', '@INPUT@' ],
capture: true)
if 'CONFIG_TRACE_UST' in config_host
trace_ust_h = custom_target(fmt.format('trace-ust', 'h'),
output: fmt.format('trace-ust', 'h'),
input: trace_events_file,
command: [ tracetool, group, '--format=ust-events-h', '@INPUT@' ],
capture: true)
trace_ss.add(trace_ust_h, lttng, urcubp)
genh += trace_ust_h
endif
trace_ss.add(trace_h, trace_c)
if 'CONFIG_TRACE_DTRACE' in config_host
trace_dtrace = custom_target(fmt.format('trace-dtrace', 'dtrace'),
output: fmt.format('trace-dtrace', 'dtrace'),
input: trace_events_file,
command: [ tracetool, group, '--format=d', '@INPUT@' ],
capture: true)
trace_dtrace_h = custom_target(fmt.format('trace-dtrace', 'h'),
output: fmt.format('trace-dtrace', 'h'),
input: trace_dtrace,
command: [ 'dtrace', '-o', '@OUTPUT@', '-h', '-s', '@INPUT@' ])
trace_dtrace_o = custom_target(fmt.format('trace-dtrace', 'o'),
output: fmt.format('trace-dtrace', 'o'),
input: trace_dtrace,
command: [ 'dtrace', '-o', '@OUTPUT@', '-G', '-s', '@INPUT@' ])
trace_ss.add(trace_dtrace_h, trace_dtrace_o)
genh += trace_dtrace_h
endif
endforeach
custom_target('trace-events-all',
output: 'trace-events-all',
input: trace_events_files,
command: [ 'cat', '@INPUT@' ],
capture: true,
install: true,
install_dir: config_host['qemu_datadir'])
if 'CONFIG_TRACE_UST' in config_host
trace_ust_all_h = custom_target('trace-ust-all.h',
output: 'trace-ust-all.h',
input: trace_events_files,
command: [ tracetool, '--group=all', '--format=ust-events-h', '@INPUT@' ],
capture: true)
trace_ust_all_c = custom_target('trace-ust-all.c',
output: 'trace-ust-all.c',
input: trace_events_files,
command: [ tracetool, '--group=all', '--format=ust-events-c', '@INPUT@' ],
capture: true)
trace_ss.add(trace_ust_all_h, trace_ust_all_c)
genh += trace_ust_all_h
endif
trace_ss.add(when: 'CONFIG_TRACE_SIMPLE', if_true: files('simple.c'))
trace_ss.add(when: 'CONFIG_TRACE_FTRACE', if_true: files('ftrace.c'))
trace_ss.add(files('control.c'))
trace_ss.add(files('qmp.c'))