If dbopen is not in libc, checking whether it is in libdb will fail if
db_185.h has renamed that function to __db185_open, which it does in DB 3.1.
So don't check whether the function is in -ldb.
diff --git a/configure.in b/configure.in
index e276c6f..e0cd8fc 100644
--- a/configure.in
+++ b/configure.in
@@ -855,7 +855,11 @@
then
# check for libdb; BSD systems have the DB routines in libc --tg
AC_SUBST(HAVE_LIBDB)
- AC_CHECK_FUNC(dbopen, [HAVE_LIBDB=], AC_CHECK_LIB(db, dbopen, [HAVE_LIBDB=-ldb]))
+ # If dbopen is not in libc, then checking whether it is in libdb
+ # is difficult: db_185.h may #define it as __db185_open
+ # Instead, we just trust it is in libdb; linking will fail if it
+ # is not.
+ AC_CHECK_FUNC(dbopen, [HAVE_LIBDB=], [HAVE_LIBDB=-ldb])
fi
# Check for --with-wctype-functions