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

* meson.build:
* skeletonmm/doc/reference/meson.build:
* skeletonmm/meson.build:
* skeletonmm/skeleton/skeletonmm/meson.build:
Call add_dist_script() in a subproject, if meson.version() >= 0.58.0.
* util/build_scripts/dist-build-scripts.py:
* util/build_scripts/dist-changelog.py:
* util/build_scripts/doc-reference.py:
* util/build_scripts/generate-binding.py:
* util/meson_aux/extra-dist-cmd.py:
Use MESON_PROJECT_DIST_ROOT if it exists, else MESON_DIST_ROOT.
It exists if meson.version() >= 0.58.0.

5 files changed, 27 insertions, 16 deletions

diff --git a/util/build_scripts/dist-build-scripts.py b/util/build_scripts/dist-build-scripts.py
index 31aca50..a366a39 100755
--- a/util/build_scripts/dist-build-scripts.py
+++ b/util/build_scripts/dist-build-scripts.py
@@ -6,16 +6,17 @@
 # dist-build-scripts.py <root_src_dir> <script_dir> <no_dist>...
 
 # <script_dir> The directory with the build scripts, relative to <root_source_dir>.
-# <no_dist> Zero or more names (relative to MESON_DIST_ROOT) of files and
-#           directories that shall not be distributed.
+# <no_dist> Zero or more names (relative to MESON_PROJECT_DIST_ROOT)
+#           of files and directories that shall not be distributed.
 
 import os
 import sys
 import shutil
 
-dist_root = os.getenv('MESON_DIST_ROOT')
+# MESON_PROJECT_DIST_ROOT is set only if meson.version() >= 0.58.0.
+project_dist_root = os.getenv('MESON_PROJECT_DIST_ROOT', os.getenv('MESON_DIST_ROOT'))
 src_script_dir = os.path.join(sys.argv[1], sys.argv[2])
-dist_script_dir = os.path.join(dist_root, sys.argv[2])
+dist_script_dir = os.path.join(project_dist_root, sys.argv[2])
 
 # Create the distribution script directory, if it does not exist.
 os.makedirs(dist_script_dir, exist_ok=True)
@@ -32,12 +33,12 @@ for file in files:
   shutil.copy(os.path.join(src_script_dir, file), dist_script_dir)
 
 # Don't distribute .gitignore files.
-for dirpath, dirnames, filenames in os.walk(dist_root):
+for dirpath, dirnames, filenames in os.walk(project_dist_root):
   if '.gitignore' in filenames:
     os.remove(os.path.join(dirpath, '.gitignore'))
 
-# Remove an empty MESON_DIST_ROOT/build directory.
-dist_build_dir = os.path.join(dist_root, 'build')
+# Remove an empty MESON_PROJECT_DIST_ROOT/build directory.
+dist_build_dir = os.path.join(project_dist_root, 'build')
 if os.path.isdir(dist_build_dir):
   try:
     os.rmdir(dist_build_dir)
@@ -45,9 +46,9 @@ if os.path.isdir(dist_build_dir):
     # Ignore the error, if not empty.
     pass
 
-# Remove specified files and directories from the MESON_DIST_ROOT directory.
+# Remove specified files and directories from the MESON_PROJECT_DIST_ROOT directory.
 for rel_path in sys.argv[3:]:
-  abs_path = os.path.join(dist_root, rel_path)
+  abs_path = os.path.join(project_dist_root, rel_path)
   if os.path.isfile(abs_path):
     os.remove(abs_path)
   elif os.path.isdir(abs_path):
diff --git a/util/build_scripts/dist-changelog.py b/util/build_scripts/dist-changelog.py
index 4a11a5f..5eecb1a 100755
--- a/util/build_scripts/dist-changelog.py
+++ b/util/build_scripts/dist-changelog.py
@@ -20,5 +20,7 @@ cmd = [
   '--max-count=200',
   '--pretty=tformat:%cd  %an  <%ae>%n%n  %s%n%w(0,0,2)%+b',
 ]
-with open(os.path.join(os.getenv('MESON_DIST_ROOT'), 'ChangeLog'), mode='w') as logfile:
+# MESON_PROJECT_DIST_ROOT is set only if meson.version() >= 0.58.0.
+project_dist_root = os.getenv('MESON_PROJECT_DIST_ROOT', os.getenv('MESON_DIST_ROOT'))
+with open(os.path.join(project_dist_root, 'ChangeLog'), mode='w') as logfile:
   sys.exit(subprocess.run(cmd, stdout=logfile).returncode)
diff --git a/util/build_scripts/doc-reference.py b/util/build_scripts/doc-reference.py
index c9a3a80..9769688 100755
--- a/util/build_scripts/doc-reference.py
+++ b/util/build_scripts/doc-reference.py
@@ -142,10 +142,13 @@ def dist_doc():
   #      argv[3]              argv[4]       argv[5]     argv[6]
   # <doctool_dist_dir> <doc_ref_build_dir> <tagfile> <devhelpfile>
 
-  # <doctool_dist_dir> is a distribution directory, relative to MESON_DIST_ROOT.
+  # <doctool_dist_dir> is a distribution directory, relative to MESON_PROJECT_DIST_ROOT.
   # <doc_ref_build_dir> is a relative or absolute path in the build directory.
   # <tagfile> and <devhelpfile> are relative or absolute paths in the build directory.
-  doctool_dist_dir = os.path.join(os.getenv('MESON_DIST_ROOT'), sys.argv[3])
+
+  # MESON_PROJECT_DIST_ROOT is set only if meson.version() >= 0.58.0.
+  project_dist_root = os.getenv('MESON_PROJECT_DIST_ROOT', os.getenv('MESON_DIST_ROOT'))
+  doctool_dist_dir = os.path.join(project_dist_root, sys.argv[3])
   doc_ref_build_dir = sys.argv[4]
   tagfile = sys.argv[5]
   devhelpfile = sys.argv[6]
diff --git a/util/build_scripts/generate-binding.py b/util/build_scripts/generate-binding.py
index c88bc5c..6d719ff 100755
--- a/util/build_scripts/generate-binding.py
+++ b/util/build_scripts/generate-binding.py
@@ -117,9 +117,12 @@ def dist_built_files():
   # <built_h_cc_dir> <dist_dir> <basefilenames>...
 
   # <built_h_cc_dir> is an absolute path in the build directory or source directory.
-  # <dist_dir> is a distribution directory, relative to MESON_DIST_ROOT.
+  # <dist_dir> is a distribution directory, relative to MESON_PROJECT_DIST_ROOT.
+
+  # MESON_PROJECT_DIST_ROOT is set only if meson.version() >= 0.58.0.
+  project_dist_root = os.getenv('MESON_PROJECT_DIST_ROOT', os.getenv('MESON_DIST_ROOT'))
   built_h_cc_dir = sys.argv[2]
-  dist_dir = os.path.join(os.getenv('MESON_DIST_ROOT'), sys.argv[3])
+  dist_dir = os.path.join(project_dist_root, sys.argv[3])
 
   # Create the distribution directory, if it does not exist.
   os.makedirs(os.path.join(dist_dir, 'private'), exist_ok=True)
diff --git a/util/meson_aux/extra-dist-cmd.py b/util/meson_aux/extra-dist-cmd.py
index 484f4e9..ff2c230 100755
--- a/util/meson_aux/extra-dist-cmd.py
+++ b/util/meson_aux/extra-dist-cmd.py
@@ -27,12 +27,14 @@ cmd = [
   '--max-count=200',
   '--pretty=tformat:%cd  %an  <%ae>%n%n  %s%n%w(0,0,2)%+b',
 ]
-with open(os.path.join(os.getenv('MESON_DIST_ROOT'), 'ChangeLog'), mode='w') as logfile:
+# MESON_PROJECT_DIST_ROOT is set only if meson.version() >= 0.58.0.
+project_dist_root = os.getenv('MESON_PROJECT_DIST_ROOT', os.getenv('MESON_DIST_ROOT'))
+with open(os.path.join(project_dist_root, 'ChangeLog'), mode='w') as logfile:
   result = subprocess.run(cmd, stdout=logfile)
 
 # Distribute the libstdc++.tag file in addition to the files in the local git clone.
 # shutil.copy2() copies timestamps and some other file metadata.
 shutil.copy2(os.path.join(root_build_dir, 'libstdc++.tag'),
-             os.path.join(os.getenv('MESON_DIST_ROOT'), 'doctags'))
+             os.path.join(project_dist_root, 'doctags'))
 
 sys.exit(result.returncode)