Add support for @CURRENT_SOURCE_DIR@ in generator arguments

Allow users to specify @CURRENT_SOURCE_DIR@ in generator arguments
to specify the current target source directory.
This is useful when creating protobuf generator objects in sub-directories
because protoc will then generate files in the expected location.

Fixes #1622.

Remove stray semicolon

Update documentation

1 files changed, 2 insertions, 0 deletions

diff --git a/mesonbuild/backend/vs2010backend.py b/mesonbuild/backend/vs2010backend.py
index e910a03..533edf0 100644
--- a/mesonbuild/backend/vs2010backend.py
+++ b/mesonbuild/backend/vs2010backend.py
@@ -120,6 +120,7 @@ class Vs2010Backend(backends.Backend):
         custom_target_include_dirs = []
         custom_target_output_files = []
         target_private_dir = self.relpath(self.get_target_private_dir(target), self.get_target_dir(target))
+        source_target_dir = self.get_target_source_dir(target)
         down = self.target_to_build_root(target)
         for genlist in target.get_generated_sources():
             if isinstance(genlist, build.CustomTarget):
@@ -154,6 +155,7 @@ class Vs2010Backend(backends.Backend):
                     args = [x.replace("@SOURCE_DIR@", self.environment.get_source_dir())
                              .replace("@BUILD_DIR@", target_private_dir)
                             for x in args]
+                    args = [x.replace("@CURRENT_SOURCE_DIR@", source_target_dir) for x in args]
                     args = [x.replace("@SOURCE_ROOT@", self.environment.get_source_dir())
                              .replace("@BUILD_ROOT@", self.environment.get_build_dir())
                             for x in args]