diff -ru a/configure.in b/configure.in
--- a/configure.in	2016-11-16 02:29:53.000000000 +0200
+++ b/configure.in	2020-11-21 06:07:06.778092416 +0200
@@ -152,9 +152,9 @@
 	CFLAGS="$save_CFLAGS"
 	LDFLAGS="$LDFLAGS $BDB_LDFLAGS"
 	EXTRA_LIBS="$EXTRA_LIBS $BDB_LIBS"
-	AC_CHECK_TYPES([u_int], , , [[#include "${srcdir}/compiler.h"]
+	AC_CHECK_TYPES([u_int,u_int32_t], , , [[#include "${srcdir}/compiler.h"]
 	                             [#include <sys/types.h>]
-	                             [#include <db.h>]])
+	                             [#include <stdint.h>]])
 fi
 
 AC_ARG_WITH(oss, AS_HELP_STRING([--without-oss],
diff -ru a/tags_cache.c b/tags_cache.c
--- a/tags_cache.c	2016-11-16 02:29:53.000000000 +0200
+++ b/tags_cache.c	2020-11-21 06:02:55.043214842 +0200
@@ -24,6 +24,7 @@
 #include <time.h>
 #include <unistd.h>
 #include <dirent.h>
+#include <stdint.h>
 
 #ifdef HAVE_DB_H
 # ifndef HAVE_U_INT
@@ -32,6 +33,12 @@
 typedef unsigned int u_int;
 typedef unsigned long int u_long;
 # endif
+# ifndef HAVE_U_INT32_T
+typedef uint8_t u_int8_t;
+typedef uint16_t u_int16_t;
+typedef uint32_t u_int32_t;
+typedef uint64_t u_int64_t;
+# endif
 #include <db.h>
 #endif