diff --git a/meson.build b/meson.build
new file mode 100644
index 0000000..9dc5c8f
--- /dev/null
+++ b/meson.build
@@ -0,0 +1,37 @@
+# Copyright (c) 2025, Postgres Professional
+
+# Does not support the PGXS infrastructure at this time. Please, compile as part
+# of the contrib source tree.
+
+pg_tsparser_sources = files(
+  'tsparser.c'
+)
+
+if host_system == 'windows'
+  pg_tsparser_sources += rc_lib_gen.process(win32ver_rc, extra_args: [
+    '--NAME', 'pg_tsparser',
+    '--FILEDESC', 'pg_tsparser - modifies the default text parsing strategy.',])
+endif
+
+pg_tsparser = shared_module('pg_tsparser',
+  pg_tsparser_sources,
+  kwargs: contrib_mod_args,
+)
+contrib_targets += pg_tsparser
+
+install_data(
+  'pg_tsparser.control',
+  'pg_tsparser--1.0.sql',
+  kwargs: contrib_data_args,
+)
+
+tests += {
+  'name': 'pg_tsparser',
+  'sd': meson.current_source_dir(),
+  'bd': meson.current_build_dir(),
+  'regress': {
+    'sql': [
+      'pg_tsparser',
+    ],
+  },
+}
diff --git a/tsparser.c b/tsparser.c
index 0546e53..e821dce 100644
--- a/tsparser.c
+++ b/tsparser.c
@@ -309,11 +309,14 @@ TParserInit(char *str, int len)
 	 */
 	if (prs->charmaxlen > 1)
 	{
-		Oid			collation = DEFAULT_COLLATION_OID;	/* TODO */
 		pg_locale_t mylocale = 0;		/* TODO */
 
 		prs->usewide = true;
-		if (lc_ctype_is_c(collation))
+#if PG_VERSION_NUM >= 150000 || (defined(PGPRO_STD) && PG_VERSION_NUM >= 120000)
+		if (database_ctype_is_c)
+#else
+		if (lc_ctype_is_c(DEFAULT_COLLATION_OID))
+#endif
 		{
 			/*
 			 * char2wchar doesn't work for C-locale and sizeof(pg_wchar) could