Mesa (master): meson: Disable bison's -Wdeprecated since we still support old bison.

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Module: Mesa
Branch: master
Commit: 11a1cb2fa8dadca9d918e8421a3b26a1b176937c
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=11a1cb2fa8dadca9d918e8421a3b26a1b176937c

Author: Eric Anholt <eric at anholt.net>
Date:   Tue Feb 18 16:03:19 2020 -0800

meson: Disable bison's -Wdeprecated since we still support old bison.

We can't stop using deprecated keywords because we maintain support for
ancient bison.  Silence the warning so that builds are less noisy.

Acked-by: Timothy Arceri <tarceri at itsqueeze.com>
Reviewed-by: Erik Faye-Lund <erik.faye-lund at collabora.com>
Tested-by: Marge Bot <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/3868>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/3868>

---

 meson.build | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/meson.build b/meson.build
index 73ba1b24253..d69b17bb157 100644
--- a/meson.build
+++ b/meson.build
@@ -1508,6 +1508,12 @@ if host_machine.system() == 'windows'
   endif
 else
   prog_bison = find_program('bison', required : with_any_opengl)
+
+  # Disable deprecated keyword warnings, since we have to use them for
+  # old-bison compat.  See discussion in
+  # https://gitlab.freedesktop.org/mesa/mesa/merge_requests/2161
+  prog_bison = [prog_bison, '-Wno-deprecated']
+
   prog_flex = find_program('flex', required : with_any_opengl)
 endif