Adding the same directory multiple times to trace-events-subdirs
might trigger build failures, in particular when using the LTTng
Userspace Tracer library as backend.
For example when using two times the hw/core/ directory:
$ ./configure --enable-trace-backends=ust && make
[...]
CC trace-ust-all.o
In file included from trace-ust-all.h:13,
from trace-ust-all.c:13:
trace-ust-all.h:35151:1: error: redefinition of
‘__tracepoint_cb_qemu___loader_write_rom’
35151 | TRACEPOINT_EVENT(
| ^~~~~~~~~~~~~~~~
trace-ust-all.h:31791:1: note: previous definition of
‘__tracepoint_cb_qemu___loader_write_rom’ was here
31791 | TRACEPOINT_EVENT(
| ^~~~~~~~~~~~~~~~
To ease review and reduce likelihood of merge failures (see [*]),
keep trace-events-subdirs ordered when possible, following eb7ccb3c0.
[*] https://www.mail-archive.com/qemu-devel@nongnu.org/msg671007.html
Duplicate trace-events-subdirs entries generates duplicated
symbols when using the LTTng Userspace Tracer library.
Reviewed-by: Damien Hedde <damien.he...@greensocs.com>
Signed-off-by: Philippe Mathieu-Daudé <phi...@redhat.com>
---
v2: Add build log error in commit description (lvivier)
"Fixes: 26b8e6dc & 8d5d515a0"
To be even safer we should use $(sort $(trace-events-subdirs))
---
Makefile.objs | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/Makefile.objs b/Makefile.objs
index 7c1e50f9d6..d62f908965 100644
--- a/Makefile.objs
+++ b/Makefile.objs
@@ -142,8 +142,8 @@ trace-events-subdirs += nbd
trace-events-subdirs += scsi
endif
ifeq ($(CONFIG_SOFTMMU),y)
-trace-events-subdirs += chardev
trace-events-subdirs += audio
+trace-events-subdirs += chardev
trace-events-subdirs += hw/9pfs
trace-events-subdirs += hw/acpi
trace-events-subdirs += hw/alpha
@@ -191,6 +191,7 @@ trace-events-subdirs += migration
trace-events-subdirs += net
trace-events-subdirs += ui
endif
+trace-events-subdirs += hw/core
trace-events-subdirs += hw/display
trace-events-subdirs += qapi
trace-events-subdirs += qom
@@ -203,7 +204,6 @@ trace-events-subdirs += target/riscv
trace-events-subdirs += target/s390x
trace-events-subdirs += target/sparc
trace-events-subdirs += util
-trace-events-subdirs += hw/core
trace-events-files = $(SRC_PATH)/trace-events
$(trace-events-subdirs:%=$(SRC_PATH)/%/trace-events)
--
2.21.1
