Parse contents of gresource xml and add deps manually. A bit of a hack but necessary due to missing upstream functionality. Closes #298.

build.py

@@ -711,13 +711,16 @@ class CustomTarget:
                     'install' : True,
                     'install_dir' : True,
                     'build_always' : True,
-                    'depends' : True}
+                    'depends' : True,
+                    'depend_files' : True,
+                    }
 
     def __init__(self, name, subdir, kwargs):
         self.name = name
         self.subdir = subdir
         self.dependencies = []
         self.extra_depends = []
+        self.depend_files = [] # Files that this target depends on but are not on the command line.
         self.process_kwargs(kwargs)
         self.extra_files = []
         self.install_rpath = ''
@@ -795,6 +798,15 @@ class CustomTarget:
             if not isinstance(ed, CustomTarget) and not isinstance(ed, BuildTarget):
                 raise InvalidArguments('Can only depend on toplevel targets.')
             self.extra_depends.append(ed)
+        depend_files = kwargs.get('depend_files', [])
+        if not isinstance(depend_files, list):
+            depend_files = [depend_files]
+        for i in depend_files:
+            if isinstance(i, (File, str)):
+                self.depend_files.append(i)
+            else:
+                mlog.debug(i)
+                raise InvalidArguments('Unknown type in depend_files.')
 
     def get_basename(self):
         return self.name

modules/gnome.py

@@ -20,6 +20,7 @@ import os, sys
 import subprocess
 from coredata import MesonException
 import mlog
+import xml.etree.ElementTree as ET
 
 girwarning_printed = False
 
@@ -36,13 +37,38 @@ class GnomeModule:
         kwargs['command'] = cmd
         output_c = args[0] + '.c'
         output_h = args[0] + '.h'
-        kwargs['input'] = args[1]
+        resfile = args[1]
+        kwargs['depend_files'] = self.parse_gresource_xml(state, resfile)
+        kwargs['input'] = resfile
         kwargs['output'] = output_c
         target_c = build.CustomTarget(args[0]+'_c', state.subdir, kwargs)
         kwargs['output'] = output_h
         target_h = build.CustomTarget(args[0] + '_h', state.subdir, kwargs)
         return [target_c, target_h]
 
+    def parse_gresource_xml(self, state, fname):
+        abspath = os.path.join(state.environment.source_dir, state.subdir, fname)
+        relative_part = os.path.split(fname)[0]
+        resdir = os.path.join(state.subdir, 'data')
+        try:
+            tree = ET.parse(abspath)
+            root = tree.getroot()
+            result = []
+            for child in root[0]:
+                if child.tag != 'file':
+                    mlog.log("Warning, malformed rcc file: ", os.path.join(state.subdir, fname))
+                    break
+                else:
+                    relfname = os.path.join(resdir, child.text)
+                    absfname = os.path.join(state.environment.source_dir, relfname)
+                    if os.path.isfile(absfname):
+                        result.append(relfname)
+                    else:
+                        mlog.log('Warning, resource file points to nonexisting file %s.' % relfname)
+            return result
+        except Exception:
+            return []
+
     def generate_gir(self, state, args, kwargs):
         if len(args) != 1:
             raise MesonException('Gir takes one argument')

ninjabackend.py

@@ -300,10 +300,15 @@ class NinjaBackend(backends.Backend):
                 srcs.append(os.path.join(self.build_to_src, target.subdir, i))
             else:
                 srcs.append(i.rel_to_builddir(self.build_to_src))
-        deps +=  srcs
         if target.build_always:
             deps.append('PHONY')
-        elem = NinjaBuildElement(ofilenames, 'CUSTOM_COMMAND', deps)
+        elem = NinjaBuildElement(ofilenames, 'CUSTOM_COMMAND', srcs)
+        for i in target.depend_files:
+            if isinstance(i, mesonlib.File):
+                deps.append(i.rel_to_builddir(self.build_to_src))
+            else:
+                deps.append(os.path.join(self.build_to_src, i))
+        elem.add_dep(deps)
         for d in target.extra_depends:
             tmp = d.get_filename()
             if not isinstance(tmp, list):