glslang: disable YYDEBUG


This exports the 'extern int yydebug;' symbol in glslang_tab.cpp.h, which causes conflicts
with other software which may use their own Bison parsers for other things
and would want to debug them (or not)

Pick-to: 6.12 6.11
Change-Id: If30142bcc48c2a7e6bf876b07dfa009585285a21
Reviewed-by: Laszlo Agocs <laszlo.agocs@qt.io>
Reviewed-by: Tim Blechmann <tim.blechmann@qt.io>
commita8155faaf65c6d912b3bccfa3bb80f5bf5668f44
parent3007ae844193e0bfd3384eb26161b34ac0e84488
authorJean-Michaël Celerier <jeanmichael.celerier@gmail.com>
committerJean-Michaël Celerier <jeanmichael.celerier@gmail.com>
commit timeMon, 3 Aug 2026 12:19:53 +0000