On Mon, Nov 25, 2013 at 2:19 AM, Ángel González <keisial@xxxxxxxxx> wrote: > On 22/11/13 15:36, Terry Guo wrote: >> >> On Fri, Nov 22, 2013 at 10:34 PM, Jonathan Wakely<jwakely.gcc@xxxxxxxxx> >> wrote: >>> >>> On 22 November 2013 14:09, Terry Guo wrote: >>>> >>>> But if you search i386.c, you will find many bool type variables. Why >>>> it works for i386.c but not for i386.h? >>> >>> i386.h is a header, it's not only used in one place. >>> >>> I assume your error is because i386.c is compiled as a C++ file, but >>> i386.h is included in a file that is compiled as a C file, e.g. >>> libgcc.c >> >> Yes. I have same understanding. Is it possible to compile libgcc.c as >> a C++ file? >> >> BR, >> Terry > > IMHO the best solution would be to #include <stdbool.h> in i386.h > Thank you all. I did learned something behind the question. All of your solutions can work. I will pick up the one that is fit for my requirement. BR, Terry