$NetBSD$

GBL_INC_DIR isn't defined

--- bdb/blib/Makefile.orig	2025-04-01 19:33:24.117729701 +0000
+++ bdb/blib/Makefile
@@ -33,7 +33,7 @@ CLASS_DIR	= objs/class/bigloo/bdb
 BHEAPFLAGS	= -unsafe -q -mkaddheap -mkaddlib -L $(LIB) -heap-library bdb
 BFLAGS		+= -lib-dir $(LIB)
 # C flags
-CFLAGS		= -I$(BGL_INC_DIR) -I. -I$(BOOTLIBDIR) $(CPICFLAGS) $(GCINCLUDE)
+CFLAGS		= -I. -I$(BOOTLIBDIR) $(CPICFLAGS) $(GCINCLUDE)
 # Bigloo flags
 BDBFLAGS	= $(BFLAGS) -farithmetic -init-lib
 
