Xcode: put all include dirs via a property rather than a cmd line arg.

mesonbuild/backend/backends.py

@@ -1169,7 +1169,7 @@ class Backend:
     def get_normpath_target(self, source) -> str:
         return os.path.normpath(source)
 
-    def get_custom_target_dir_include_args(self, target, compiler, *, absolute_path=False):
+    def get_custom_target_dirs(self, target, compiler, *, absolute_path=False):
         custom_target_include_dirs = []
         for i in target.get_generated_sources():
             # Generator output goes into the target private dir which is
@@ -1184,11 +1184,15 @@ class Backend:
                 idir = os.path.join(self.environment.get_build_dir(), idir)
             if idir not in custom_target_include_dirs:
                 custom_target_include_dirs.append(idir)
+        return custom_target_include_dirs
+
+    def get_custom_target_dir_include_args(self, target, compiler, *, absolute_path=False):
         incs = []
-        for i in custom_target_include_dirs:
+        for i in self.get_custom_target_dirs(target, compiler, absolute_path=absolute_path):
             incs += compiler.get_include_args(i, False)
         return incs
 
+
     def eval_custom_target_command(self, target, absolute_outputs=False):
         # We want the outputs to be absolute only when using the VS backend
         # XXX: Maybe allow the vs backend to use relative paths too?

mesonbuild/backend/xcodebackend.py

@@ -1406,9 +1406,6 @@ class XCodeBackend(backends.Backend):
                         # It is unclear what is the cwd when xcode runs. -I. does not seem to
                         # add the root build dir to the search path. So add an absolute path instead.
                         # This may break reproducible builds, in which case patches are welcome.
-                        lang_cargs += compiler.get_include_args(self.get_target_private_dir_abs(target), is_system=False)
-                        lang_cargs += self.get_build_dir_include_args(target, compiler, absolute_path=True)
-                        lang_cargs += self.get_source_dir_include_args(target, compiler, absolute_path=True)
                         lang_cargs += self.get_custom_target_dir_include_args(target, compiler, absolute_path=True)
                     langargs[langname] = args
                     langargs[langname] += lang_cargs
@@ -1448,12 +1445,18 @@ class XCodeBackend(backends.Backend):
                     settings_dict.add_item('GCC_PREFIX_HEADER', f'"$(PROJECT_DIR)/{relative_pch_path}"')
             settings_dict.add_item('GCC_PREPROCESSOR_DEFINITIONS', '""')
             settings_dict.add_item('GCC_SYMBOLS_PRIVATE_EXTERN', 'NO')
+            header_arr = PbxArray()
+            unquoted_headers = []
+            unquoted_headers.append(self.get_target_private_dir_abs(target))
+            unquoted_headers.append(os.path.join(self.environment.get_build_dir(), target.get_subdir()))
+            unquoted_headers.append(os.path.join(self.environment.get_source_dir(), target.get_subdir()))
             if headerdirs:
-                header_arr = PbxArray()
                 for i in headerdirs:
                     i = os.path.normpath(i)
-                    header_arr.add_item(f'"\\"{i}\\""')
+                    unquoted_headers.append(i)
-                settings_dict.add_item('HEADER_SEARCH_PATHS', header_arr)
+            for i in unquoted_headers:
+                header_arr.add_item(f'"\\"{i}\\""')
+            settings_dict.add_item('HEADER_SEARCH_PATHS', header_arr)
             settings_dict.add_item('INSTALL_PATH', f'"{install_path}"')
             settings_dict.add_item('LIBRARY_SEARCH_PATHS', '""')
             if isinstance(target, build.SharedModule):