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meson: Don't make object files for dtrace on macOS 

dtrace on macOS uses unresolved symbols with a special prefix to define
probes [1], only headers should be generated for USDT (dtrace(1)). But
it doesn't support backwards compatible no-op -G flag [2] and implicit
build rules fail.

1. https://markmail.org/message/6grq2ygr5nwdwsnb
2. https://markmail.org/message/5xrxt2w5m42nojkz

Cc: Daniel P. Berrangé <berrange@redhat.com>
Cc: Cameron Esfahani <dirty@apple.com>
Signed-off-by: Roman Bolshakov <r.bolshakov@yadro.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Roman Bolshakov 2020-08-23 12:05:47 +03:00 committed by Paolo Bonzini
parent 5f7e966b27
commit 568ac779a4
1 changed files with 8 additions and 5 deletions
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13
trace/meson.build
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@ -39,12 +39,15 @@ foreach dir : [ '.' ] + trace_events_subdirs
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)
if host_machine.system() != 'darwin'
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_o)
endif
trace_ss.add(trace_dtrace_h, trace_dtrace_o)
genh += trace_dtrace_h
endif
endforeach