[pango/fix-707] Windows: Fix builds using HarfBuzz as subproject

[Chun-wei Fan <fanchunwei src gnome org>]

commit b88acef4abf4a2e0f9c0ff0e4602da3240d08c90
Author: Chun-wei Fan <fanchunwei src gnome org>
Date:   Sat Oct 15 20:47:30 2022 +0800

    Windows: Fix builds using HarfBuzz as subproject
    
    Only check for the GDI and DirectWrite symbols in the HarfBuzz dep if it
    is not built as a subproject.
    
    When it is built as a subproject, enable GDI and DirectWrite support, which
    is otherwise not enabled by default, and thus assume that GDI and
    DirectWrite support in HarfBuzz is enabled.
    
    Fixes issue #707.

 meson.build | 36 ++++++++++++++++++++++--------------
 1 file changed, 22 insertions(+), 14 deletions(-)
---
diff --git a/meson.build b/meson.build
index f63ce6cd2..312972428 100644
--- a/meson.build
+++ b/meson.build
@@ -276,23 +276,31 @@ harfbuzz_dep = dependency('harfbuzz',
                           version: harfbuzz_req_version,
                           required: true,
                           fallback: ['harfbuzz', 'libharfbuzz_dep'],
-                          default_options: ['coretext=enabled'])
-
+                          default_options: [
+                            'coretext=enabled',
+                            'gdi=enabled',
+                            'directwrite=enabled']
+                         )
 if host_system == 'windows'
-  if cpp.has_header_symbol(
-      'hb-directwrite.h',
-      'hb_directwrite_face_create',
-      dependencies: harfbuzz_dep,
-      prefix: '#include <dwrite.h>',
-    )
+  if harfbuzz_dep.type_name() == 'internal'
     pango_conf.set('HAVE_HARFBUZZ_DIRECT_WRITE', 1)
-  endif
-  if cc.has_header_symbol(
-      'hb-gdi.h',
-      'hb_gdi_face_create',
-      dependencies: harfbuzz_dep,
-    )
     pango_conf.set('HAVE_HARFBUZZ_GDI', 1)
+  else
+    if cpp.has_header_symbol(
+        'hb-directwrite.h',
+        'hb_directwrite_face_create',
+        dependencies: harfbuzz_dep,
+        prefix: '#include <dwrite.h>',
+      )
+      pango_conf.set('HAVE_HARFBUZZ_DIRECT_WRITE', 1)
+    endif
+    if cc.has_header_symbol(
+        'hb-gdi.h',
+        'hb_gdi_face_create',
+        dependencies: harfbuzz_dep,
+      )
+      pango_conf.set('HAVE_HARFBUZZ_GDI', 1)
+    endif
   endif
 endif