sourceset: add all_dependencies() method

'if_true' sources should be built with their dependencies, as
illustrated by test case change.

Ideally, I think we would want only the files with the dependencies to
be built with the flags, but that would probably change the way
sourceset are used.

1 files changed, 9 insertions, 0 deletions

diff --git a/mesonbuild/modules/sourceset.py b/mesonbuild/modules/sourceset.py
index fc46a7a..a14bd70 100644
--- a/mesonbuild/modules/sourceset.py
+++ b/mesonbuild/modules/sourceset.py
@@ -41,6 +41,7 @@ class SourceSetHolder(MutableInterpreterObject, ObjectHolder):
             'add': self.add_method,
             'add_all': self.add_all_method,
             'all_sources': self.all_sources_method,
+            'all_dependencies': self.all_dependencies_method,
             'apply': self.apply_method,
         })
 
@@ -131,6 +132,14 @@ class SourceSetHolder(MutableInterpreterObject, ObjectHolder):
         files = self.collect(lambda x: True, True)
         return list(files.sources)
 
+    @noKwargs
+    @noPosargs
+    @FeatureNew('source_set.all_dependencies() method', '0.52.0')
+    def all_dependencies_method(self, args, kwargs):
+        self.frozen = True
+        files = self.collect(lambda x: True, True)
+        return list(files.dependencies)
+
     @permittedKwargs(['strict'])
     def apply_method(self, args, kwargs):
         if len(args) != 1: