Subprojects can use meson.add_dist_script() if meson.version() >= 0.58.0

* meson.build:
* MSVC_NMake/meson.build:
* docs/docs/manual/meson.build:
* docs/docs/reference/meson.build:
Call add_dist_script() in a subproject, if meson.version() >= 0.58.0.
* tools/handle-built-files.py:
* tools/tutorial-custom-cmd.py:
Use MESON_PROJECT_DIST_ROOT if it exists, else MESON_DIST_ROOT.
It exists if meson.version() >= 0.58.0.

1 files changed, 8 insertions, 5 deletions

diff --git a/meson.build b/meson.build
index 5f636ff..ab1aee0 100644
--- a/meson.build
+++ b/meson.build
@@ -220,6 +220,9 @@ sigcxxconfig_h = configure_file(
   install_dir: install_includeconfigdir,
 )
 
+# add_dist_script() is not allowed in a subproject if meson.version() < 0.58.0.
+can_add_dist_script = not meson.is_subproject() or meson.version().version_compare('>= 0.58.0')
+
 #subdir('cmake')
 subdir('MSVC_NMake')
 subdir('sigc++')
@@ -228,22 +231,22 @@ subdir('tests')
 subdir('docs/docs/reference')
 subdir('docs/docs/manual')
 
-if not meson.is_subproject()
+if can_add_dist_script
   # Add a ChangeLog file to the distribution directory.
-  # (add_dist_script() is not allowed in a subproject)
   meson.add_dist_script(
     python3.path(), dist_changelog,
     project_source_root,
   )
   # Add build scripts to the distribution directory, and delete .gitignore
-  # files and an empty $MESON_DIST_ROOT/build/ directory.
+  # files and an empty $MESON_PROJECT_DIST_ROOT/build/ directory.
   meson.add_dist_script(
     python3.path(), dist_build_scripts,
     project_source_root,
     'untracked' / 'build_scripts',
   )
-else
-  # This is a subproject.
+endif
+
+if meson.is_subproject()
   sigcxx_dep = declare_dependency(
     dependencies: sigcxx_own_dep,
     variables: {