Silence `POSIX Yacc` warnings

Flex/Bison warn that we make use of two non-POSIX directives,
%code and %define. Coincidentally, we don't use POSIX Yacc!

From the bison documentation, "[...] -Wno-yacc will hide the warnings
about POSIX Yacc incompatibilities." [1].

Thus, this flag is added to the YFLAGS.

  YACC     filter-parser.c
/home/jgalar/EfficiOS/src/lttng-tools/src/lib/lttng-ctl/filter/filter-parser.y:293.1-5:
warning: POSIX Yacc does not support %code [-Wyacc]
  293 | %code provides
      | ^~~~~
/home/jgalar/EfficiOS/src/lttng-tools/src/lib/lttng-ctl/filter/filter-parser.y:301.1-7:
warning: POSIX Yacc does not support %define [-Wyacc]
  301 | %define api.pure
      | ^

[1] https://www.gnu.org/software/bison/manual/html_node/Diagnostics.html

Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Change-Id: Iaf65534bc47514d3a99b97ce414880a6afc723b9

diff --git a/src/lib/lttng-ctl/filter/Makefile.am b/src/lib/lttng-ctl/filter/Makefile.am
index e338eee6e40d9cf4f79ba06f3c7dfa7454cd0604..b076633ad1d37023763ed79902eba0efd94693be 100644 (file)
--- a/src/lib/lttng-ctl/filter/Makefile.am
+++ b/src/lib/lttng-ctl/filter/Makefile.am
@@ -24,7 +24,7 @@ libfilter_la_SOURCES = \
 libfilter_la_CFLAGS = -include filter-symbols.h $(AM_CFLAGS)
 libfilter_la_LIBADD = $(top_builddir)/src/common/string-utils/libstring-utils.la
 
-AM_YFLAGS = -t -d -v
+AM_YFLAGS = -t -d -v -Wno-yacc
 
 # start with empty files to clean
 CLEANFILES =