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https://gitlab.com/qemu-project/qemu
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a81df1b68b
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>
77 lines
3.6 KiB
Meson
77 lines
3.6 KiB
Meson
trace_events_files = []
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foreach dir : [ '.' ] + trace_events_subdirs
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trace_events_file = meson.source_root() / dir / 'trace-events'
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trace_events_files += [ trace_events_file ]
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group_name = dir == '.' ? 'root' : dir.underscorify()
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group = '--group=' + group_name
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fmt = '@0@-' + group_name + '.@1@'
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trace_h = custom_target(fmt.format('trace', 'h'),
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output: fmt.format('trace', 'h'),
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input: trace_events_file,
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command: [ tracetool, group, '--format=h', '@INPUT@' ],
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capture: true)
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genh += trace_h
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trace_c = custom_target(fmt.format('trace', 'c'),
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output: fmt.format('trace', 'c'),
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input: trace_events_file,
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command: [ tracetool, group, '--format=c', '@INPUT@' ],
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capture: true)
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if 'CONFIG_TRACE_UST' in config_host
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trace_ust_h = custom_target(fmt.format('trace-ust', 'h'),
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output: fmt.format('trace-ust', 'h'),
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input: trace_events_file,
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command: [ tracetool, group, '--format=ust-events-h', '@INPUT@' ],
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capture: true)
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trace_ss.add(trace_ust_h, lttng, urcubp)
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genh += trace_ust_h
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endif
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trace_ss.add(trace_h, trace_c)
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if 'CONFIG_TRACE_DTRACE' in config_host
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trace_dtrace = custom_target(fmt.format('trace-dtrace', 'dtrace'),
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output: fmt.format('trace-dtrace', 'dtrace'),
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input: trace_events_file,
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command: [ tracetool, group, '--format=d', '@INPUT@' ],
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capture: true)
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trace_dtrace_h = custom_target(fmt.format('trace-dtrace', 'h'),
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output: fmt.format('trace-dtrace', 'h'),
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input: trace_dtrace,
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command: [ 'dtrace', '-o', '@OUTPUT@', '-h', '-s', '@INPUT@' ])
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trace_dtrace_o = custom_target(fmt.format('trace-dtrace', 'o'),
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output: fmt.format('trace-dtrace', 'o'),
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input: trace_dtrace,
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command: [ 'dtrace', '-o', '@OUTPUT@', '-G', '-s', '@INPUT@' ])
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trace_ss.add(trace_dtrace_h, trace_dtrace_o)
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genh += trace_dtrace_h
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endif
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endforeach
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custom_target('trace-events-all',
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output: 'trace-events-all',
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input: trace_events_files,
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command: [ 'cat', '@INPUT@' ],
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capture: true,
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install: true,
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install_dir: config_host['qemu_datadir'])
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if 'CONFIG_TRACE_UST' in config_host
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trace_ust_all_h = custom_target('trace-ust-all.h',
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output: 'trace-ust-all.h',
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input: trace_events_files,
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command: [ tracetool, '--group=all', '--format=ust-events-h', '@INPUT@' ],
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capture: true)
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trace_ust_all_c = custom_target('trace-ust-all.c',
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output: 'trace-ust-all.c',
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input: trace_events_files,
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command: [ tracetool, '--group=all', '--format=ust-events-c', '@INPUT@' ],
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capture: true)
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trace_ss.add(trace_ust_all_h, trace_ust_all_c)
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genh += trace_ust_all_h
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endif
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trace_ss.add(when: 'CONFIG_TRACE_SIMPLE', if_true: files('simple.c'))
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trace_ss.add(when: 'CONFIG_TRACE_FTRACE', if_true: files('ftrace.c'))
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trace_ss.add(files('control.c'))
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trace_ss.add(files('qmp.c'))
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