meson/Windows: Fix builds when builddir is a subdir of source tree

fanc999-1 · kjellahl · commit 4caa717f4723 · 2019-12-29T18:11:52.000+01:00
It appears that Meson did not construct the paths properly for
shutil.copy2() when building in a build directory that is a
subdirectory of the sources, when using meson.current_build_dir(),
possibly due how path separators are handled.

Fix this by constructing the paths using project_build_root / 'MSVC_NMake'.
diff --git a/MSVC_NMake/meson.build b/MSVC_NMake/meson.build
@@ -13,5 +13,5 @@ configure_file(
 cmd_py = '''
 import shutil
 shutil.copy2("@0@", "@1@")
-'''.format(project_build_root / 'sigc++config.h', meson.current_build_dir())
+'''.format(project_build_root / 'sigc++config.h', project_build_root / 'MSVC_NMake')
 meson.add_postconf_script(python3.path(), '-c', cmd_py)
