diff --git a/src/runtime/c/pgf/data.h b/src/runtime/c/pgf/data.h
index 83aff155f..45689dd11 100644
--- a/src/runtime/c/pgf/data.h
+++ b/src/runtime/c/pgf/data.h
@@ -351,4 +351,16 @@ struct PgfCCat {
 	GuFinalizer fin[0];
 };
 
+PGF_API_DECL void
+pgf_parser_index(PgfConcr* concr, 
+                 PgfCCat* ccat, PgfProduction prod,
+                 bool is_lexical,
+                 GuPool *pool);
+
+PGF_API_DECL void
+pgf_lzr_index(PgfConcr* concr, 
+              PgfCCat* ccat, PgfProduction prod,
+              bool is_lexical,
+              GuPool *pool);
+
 #endif
diff --git a/src/runtime/c/pgf/linearizer.c b/src/runtime/c/pgf/linearizer.c
index 2626c9490..ced2a8cf2 100644
--- a/src/runtime/c/pgf/linearizer.c
+++ b/src/runtime/c/pgf/linearizer.c
@@ -30,7 +30,7 @@ pgf_lzr_add_overl_entry(PgfCncOverloadMap* overl_table,
 	gu_buf_push(entries, void*, entry);
 }
 
-PGF_INTERNAL void
+PGF_API void
 pgf_lzr_index(PgfConcr* concr, 
               PgfCCat* ccat, PgfProduction prod,
               bool is_lexical,
diff --git a/src/runtime/c/pgf/parser.c b/src/runtime/c/pgf/parser.c
index a1f0e5bbb..b1916c218 100644
--- a/src/runtime/c/pgf/parser.c
+++ b/src/runtime/c/pgf/parser.c
@@ -2504,7 +2504,7 @@ pgf_lookup_word_prefix(PgfConcr *concr, GuString prefix,
 	return &state->en;
 }
 
-PGF_INTERNAL void
+PGF_API void
 pgf_parser_index(PgfConcr* concr, 
                  PgfCCat* ccat, PgfProduction prod,
                  bool is_lexical,
diff --git a/src/runtime/c/pgf/reader.c b/src/runtime/c/pgf/reader.c
index 2129269e8..2821857d6 100644
--- a/src/runtime/c/pgf/reader.c
+++ b/src/runtime/c/pgf/reader.c
@@ -936,18 +936,6 @@ pgf_read_pargs(PgfReader* rdr, PgfConcr* concr)
 	return pargs;
 }
 
-extern void
-pgf_parser_index(PgfConcr* concr, 
-                 PgfCCat* ccat, PgfProduction prod,
-                 bool is_lexical,
-                 GuPool *pool);
-
-extern void
-pgf_lzr_index(PgfConcr* concr, 
-              PgfCCat* ccat, PgfProduction prod,
-              bool is_lexical,
-              GuPool *pool);
-
 static bool
 pgf_production_is_lexical(PgfReader* rdr, PgfProductionApply *papp)
 {
@@ -1075,7 +1063,7 @@ pgf_read_cnccat(PgfReader* rdr, PgfAbstr* abstr, PgfConcr* concr, PgfCId name)
 
 	int len = last + 1 - first;
 	cnccat->cats = gu_new_seq(PgfCCat*, len, rdr->opool);
-	
+
 	for (int i = 0; i < len; i++) {
 		int fid = first + i;
 		PgfCCat* ccat = gu_map_get(concr->ccats, &fid, PgfCCat*);