horrible hack to allow for both building the splash image and generating gir in cross-builds

--- a/meson.build
+++ b/meson.build
@@ -1964,6 +1964,19 @@
 endif
 
 if meson.can_run_host_binaries() and have_gobject_introspection
+  if meson.is_cross_build()
+    native_gimp_exe = find_program([gimpconsole_exe_name, gimpmain_exe_name],
+                                   native: true, required: false)
+    native_gimp_run_env=environment()
+    native_gimp_run_env.set('GIMP_GLOBAL_BUILD_ROOT',  meson.global_build_root())
+    native_gimp_run_env.set('GIMP_GLOBAL_SOURCE_ROOT', meson.global_source_root())
+    if get_option('debug-self-in-build')
+     native_gimp_run_env.set('GIMP_DEBUG_SELF', '1')
+    endif
+    native_gimp_run_env.set('GIMP_SELF_IN_BUILD', native_gimp_exe.full_path())
+    native_gimp_exe_depends = [native_gimp_exe]
+  endif
+
   if enable_console_bin
     gimp_real_exe = gimpconsole_exe
   else
--- a/gimp-data/images/meson.build
+++ b/gimp-data/images/meson.build
@@ -1,18 +1,34 @@
 ## Splash Image and Welcome Dialog ##
 
-splash = custom_target('gimp-splash.png',
-                       input : [ 'export-splash.py' ],
-                       output: [ 'gimp-splash.png', ],
-                       depends: [ gimp_exe_depends ],
-                       command: [ gimp_exe, '-nidfs',
-                                  files('gimp-splash.xcf.xz'),
-                                  '--batch-interpreter', 'python-fu-eval',
-                                  '-b', '-', '--quit'],
-                       feed: true,
-                       build_by_default: true,
-                       env: gimp_run_env,
-                       install_dir: gimpdatadir / 'images',
-                       install: true)
+if not meson.is_cross_build()
+  splash = custom_target('gimp-splash.png',
+                         input : [ 'export-splash.py' ],
+                         output: [ 'gimp-splash.png', ],
+                         depends: [ gimp_exe_depends ],
+                         command: [ gimp_exe, '-nidfs',
+                                    files('gimp-splash.xcf.xz'),
+                                    '--batch-interpreter', 'python-fu-eval',
+                                    '-b', '-', '--quit'],
+                         feed: true,
+                         build_by_default: true,
+                         env: gimp_run_env,
+                         install_dir: gimpdatadir / 'images',
+                         install: true)
+else
+  splash = custom_target('gimp-splash.png',
+                         input : [ 'export-splash.py' ],
+                         output: [ 'gimp-splash.png', ],
+                         depends: [],
+                         command: [ gimp_exe, '-nidfs',
+                                    files('gimp-splash.xcf.xz'),
+                                    '--batch-interpreter', 'python-fu-eval',
+                                    '-b', '-', '--quit'],
+                         feed: true,
+                         build_by_default: true,
+                         env: native_gimp_run_env,
+                         install_dir: gimpdatadir / 'images',
+                         install: true)
+endif
 
 ## Windows Installer's Splash Image and Intro Banner ##