Add MVP implementation of overriding options.

1 files changed, 10 insertions, 0 deletions

diff --git a/mesonbuild/build.py b/mesonbuild/build.py
index 41e21e3..e46b65f 100644
--- a/mesonbuild/build.py
+++ b/mesonbuild/build.py
@@ -47,6 +47,7 @@ known_basic_kwargs = {'install': True,
                       'objects': True,
                       'native': True,
                       'build_by_default': True,
+                      'override_options': True,
                       }
 
 # These contain kwargs supported by both static and shared libraries. These are
@@ -305,6 +306,7 @@ class BuildTarget(Target):
         self.extra_args = {}
         self.generated = []
         self.extra_files = []
+        self.option_overrides = {}
         # Sources can be:
         # 1. Pre-existing source files in the source tree
         # 2. Pre-existing sources generated by configure_file in the build tree
@@ -670,6 +672,14 @@ class BuildTarget(Target):
                 self.pic = kwargs.get('pic', False)
                 if not isinstance(self.pic, bool):
                     raise InvalidArguments('Argument pic to static library {!r} must be boolean'.format(self.name))
+        overrides = stringlistify(kwargs.get('override_options', []))
+        for o in overrides:
+            if '=' not in o:
+                raise InvalidArguments('Overrides must be of form "key=value"')
+            k, v = o.split('=', 1)
+            k = k.strip()
+            v = v.strip()
+            self.option_overrides[k] = v
 
     def get_filename(self):
         return self.filename