[PATCH] meson.bbclass: Make the default buildtype "debug" if DEBUG_BUILD is 1

["Peter Kjellerstedt" <peter.kjellerstedt@axis.com>]

Setting the Meson buildtype to "debug" will by default only enable the
-g option to the compiler, which should not matter for OE-Core as it is
already enabled by setting DEBUG_BUILD to 1 in the first place. However,
if the package uses get_option('debug') in its meson.build files to
enable package specific debug code, this will now trigger as intended.

Signed-off-by: Peter Kjellerstedt <peter.kjellerstedt@axis.com>
---
 meta/classes/meson.bbclass | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/meta/classes/meson.bbclass b/meta/classes/meson.bbclass
index 2beed89d11..e124d18144 100644
--- a/meta/classes/meson.bbclass
+++ b/meta/classes/meson.bbclass
@@ -12,7 +12,8 @@ MESON_SOURCEPATH = "${S}"
 def noprefix(var, d):
     return d.getVar(var).replace(d.getVar('prefix') + '/', '', 1)
 
-MESON_BUILDTYPE ?= "plain"
+MESON_BUILDTYPE ?= "${@oe.utils.vartrue('DEBUG_BUILD', 'debug', 'plain', d)}"
+MESON_BUILDTYPE[vardeps] += "DEBUG_BUILD"
 MESONOPTS = " --prefix ${prefix} \
               --buildtype ${MESON_BUILDTYPE} \
               --bindir ${@noprefix('bindir', d)} \