From a514500bba6e983ef1afeac885ba8f8ffad369dc Mon Sep 17 00:00:00 2001
From: Krasimir Angelov <kr.angelov@gmail.com>
Date: Thu, 11 May 2023 05:28:11 +0200
Subject: [PATCH] try fixing the linkage error with MSVC

---
 src/runtime/c/pgf/parser.cxx | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/runtime/c/pgf/parser.cxx b/src/runtime/c/pgf/parser.cxx
index 2bdb277a3..863592957 100644
--- a/src/runtime/c/pgf/parser.cxx
+++ b/src/runtime/c/pgf/parser.cxx
@@ -51,6 +51,8 @@ struct PgfLRTableMaker::CompareItem : std::less<Item*> {
     }
 };
 
+const PgfLRTableMaker::CompareItem PgfLRTableMaker::compare_item;
+
 PgfLRTableMaker::PgfLRTableMaker(ref<PgfAbstr> abstr, ref<PgfConcr> concr)
 {
     this->abstr = abstr;
@@ -977,4 +979,4 @@ PgfExpr PgfParser::fetch(PgfDB *db, prob_t *prob)
     }
 
     return 0;
-}
\ No newline at end of file
+}