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* [lttng-dev] Statically linking babeltrace and lttng col
@ 2021-03-16 20:41 Eqbal via lttng-dev
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From: Eqbal via lttng-dev @ 2021-03-16 20:41 UTC (permalink / raw)
  To: lttng-dev


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Hi,

I have an application where I want to statically link both babeltrace2
library including the built in plugins as well as lttng ctl library. I
couldn’t find much documentation regarding that. I know you can configure
babeltrace with —enable-built-in-plugins but that seems to just link the
eventual binary tool with the plugins.

I tried to statically link the individual plugin archives (ctf, text,
utils) using —whole-archive but I am getting an error message saying some
of the functions have multiple definitions in liblttng-ctl archive. E.g.,

“babeltrace-plugin-ctf.a (libctf_parser_la-lexer.o) : in function
‘yyrestart’: lexer.c:1875: multiple definition of ‘yyrestart’
liblttng-ctl.a (libfilter_la-filter-lexer.o):filter-lexer.c:(.text+0x17e5):
first defined here.

Without —whole-archive the build succeeds (I am using cmake) but the
plugins are missing in my app (when trying to use bt_plugin_find with
static).

I am using lttng-tools stable-2.12 and babeltrace2 stable-2.0 from GitHub.

What do I need to do to properly link lttng-ctl, babeltrace2 and the built
in plugins?

Thanks,
Eqbal

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