wip - swig inc dir from subproject

meson.build

@@ -65,22 +65,15 @@ numpy_incdirs = include_directories(fs.relative_to(numpy_abs_incdir, '.'))
 swig = find_program('swig', native: true)
 
 # For now, use MMCore as a subproject. This may be changed to using as a
-# proper dependency via a wrap if/when we have MMCore releases (and we have a
-# way to compute SWIG -I args).
-# Also note that we currently assume MMCore is always a static lib; this may
-# change.
+# proper dependency via a wrap, but that will likely require better SWIG
+# support by Meson in order to get the SWIG include directories from the
+# dependency object.
 mmcore_proj = subproject(
     'MMCore',
     default_options: {'default_library': 'static'},
 )
 mmcore_dep = mmcore_proj.get_variable('mmcore')
 
-# TODO Is there a better way to get these? It is not possible to extract
-# include directories from a dependency or include_directories object.
-subproject_dir = meson.project_source_root() / 'mmCoreAndDevices'
-swig_incdir_args = [
-    '-I' + (subproject_dir / 'MMDevice'),
-    '-I' + (subproject_dir / 'MMCore'),
-]
+swig_include_dirs = mmcore_proj.get_variable('swig_include_dirs')
 
 subdir('src/pymmcore')

src/pymmcore/meson.build

@@ -15,6 +15,15 @@
 #
 # Author: Mark A. Tsuchida
 
+swig_incdir_args = []
+foreach abspath : swig_include_dirs
+    # Use relative path for readability only.
+    swig_incdir_args += '-I' + fs.relative_to(
+        abspath,
+        meson.project_build_root(),
+    )
+endforeach
+
 swig_gen = custom_target(
     'swig-pymmcore',
     input: 'pymmcore_swig.i',