Rust crates, introduced from the next commit onwards, use the glib
allocator API and need to know whether g_aligned_alloc etc are
available.

This commit adds a define in config_host_data that depends on glib
version >= 2.72.

Signed-off-by: Manos Pitsidianakis <manos.pitsidianakis@linaro.org>
---
 meson.build | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/meson.build b/meson.build
index 05446acbc6..7f05466d12 100644
--- a/meson.build
+++ b/meson.build
@@ -979,6 +979,9 @@ glib = declare_dependency(dependencies: [glib_pc, gmodule],
 # TODO: remove this check and the corresponding workaround (qtree) when
 # the minimum supported glib is >= 2.75.3
 glib_has_gslice = glib.version().version_compare('<2.75.3')
+# Check whether glib has the aligned_alloc family of functions.
+# <https://docs.gtk.org/glib/func.aligned_alloc.html>
+glib_has_aligned_alloc = glib.version().version_compare('>=2.72.0')
 
 # override glib dep to include the above refinements
 meson.override_dependency('glib-2.0', glib)
@@ -2508,6 +2511,7 @@ config_host_data.set('CONFIG_TIMERFD', cc.has_function('timerfd_create'))
 config_host_data.set('HAVE_COPY_FILE_RANGE', cc.has_function('copy_file_range'))
 config_host_data.set('HAVE_GETIFADDRS', cc.has_function('getifaddrs'))
 config_host_data.set('HAVE_GLIB_WITH_SLICE_ALLOCATOR', glib_has_gslice)
+config_host_data.set('HAVE_GLIB_WITH_ALIGNED_ALLOC', glib_has_aligned_alloc)
 config_host_data.set('HAVE_OPENPTY', cc.has_function('openpty', dependencies: util))
 config_host_data.set('HAVE_STRCHRNUL', cc.has_function('strchrnul'))
 config_host_data.set('HAVE_SYSTEM_FUNCTION', cc.has_function('system', prefix: '#include <stdlib.h>'))

-- 
2.45.2