27.01.2022 09:50, Markus Armbruster wrote:
Vladimir Sementsov-Ogievskiy <vsement...@virtuozzo.com> writes:

Making trace generation work for tests/ and qga/ would involve some
Meson hackery to ensure we generate the trace-events files before
trace-tool uses them. Since we don't actually support tracing there
anyway, we bypass that problem.

Let's add corresponding comments.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsement...@virtuozzo.com>
---
  qga/meson.build   | 7 +++++++
  tests/meson.build | 7 +++++++
  2 files changed, 14 insertions(+)

diff --git a/qga/meson.build b/qga/meson.build
index cfb1fbc085..724d5a667b 100644
--- a/qga/meson.build
+++ b/qga/meson.build
@@ -15,6 +15,13 @@ qga_qapi_outputs = [
    'qga-qapi-visit.h',
  ]
+# Problem: to generate trace events, we'd have to add the .trace-events
+# file to qapi_trace_events like we do in qapi/meson.build.  Since
+# qapi_trace_events is used by trace/meson.build, we'd have to move
+# subdir('qga') above subdir('trace') in the top-level meson.build.
+# Can't, because it would break the dependency of qga on qemuutil (which
+# depends on trace_ss).  Not worth solving now; simply suppress trace
+# event generation instead.
  qga_qapi_files = custom_target('QGA QAPI files',
                                 output: qga_qapi_outputs,
                                 input: 'qapi-schema.json',
diff --git a/tests/meson.build b/tests/meson.build
index 3f3882748a..af8f5b1746 100644
--- a/tests/meson.build
+++ b/tests/meson.build
@@ -31,6 +31,13 @@ test_qapi_outputs = [
    'test-qapi-visit.h',
  ]
+# Problem: to generate trace events, we'd have to add the .trace-events
+# file to qapi_trace_events like we do in qapi/meson.build.  Since
+# qapi_trace_events is used by trace/meson.build, we'd have to move
+# subdir('qga') above subdir('trace') in the top-level meson.build.

Shouldn't this be subdir('tests')?

Oops right.


+# Can't, because it would break the dependency of qga on qemuutil (which
+# depends on trace_ss).  Not worth solving now; simply suppress trace
+# event generation instead.
  test_qapi_files = custom_target('Test QAPI files',
                                  output: test_qapi_outputs,
                                  input: 
files('qapi-schema/qapi-schema-test.json',



--
Best regards,
Vladimir

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