meson: be explicit about the version required

This way, we know what we're allowed to use (no nested include lists
for instance) and users get immediate feedback when trying to use
unsupported versions, rather than a cryptic crash or things being
silently not built correctly.

Cc: Dylan Baker <dylan@pnwbakers.com>
Signed-off-by: Eric Engestrom <eric.engestrom@imgtec.com>
Reviewed-by: Dylan Baker <dylan@pnwbakers.com>

meson.build

@@ -18,8 +18,14 @@
 # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 # SOFTWARE.
 
-project('mesa', ['c', 'cpp'], version : '17.3.0-devel', license : 'MIT',
-        default_options : ['c_std=c99', 'cpp_std=c++11'])
+project(
+  'mesa',
+  ['c', 'cpp'],
+  version : '17.3.0-devel',
+  license : 'MIT',
+  meson_version : '>= 0.42',
+  default_options : ['c_std=c99', 'cpp_std=c++11']
+)
 
 # Arguments for the preprocessor, put these in a separate array from the C and
 # C++ (cpp in meson terminology) arguments since they need to be added to the