$ make CFLAGS='-O2 -D__digital__'
+
+i[3456]86-*-linux*
+------------------
+
+gdb/660: gdb does not build with GNU/Linux libc5. The symptom is a
+parse error before `uintptr_t' or an error message about `uintptr_t'.
+Upgrade to glibc 2.1.3 or later, which defines uintptr_t.
+
+gdb/1030: GNU binutils 2.12.1 and earlier versions do not work properly
+with gdb. If you use GNU binutils, upgrade to version 2.13 or later.
+You can check the version of binutils with the command:
+
+ $ ld --version