On Fri, Nov 22, 2013 at 10:36 PM, Terry Guo <flameroc@xxxxxxxxx> 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? > The i386.c is compiles as g++ -c -g -O2 -DIN_GCC -fno-exceptions -fno-rtti -fasynchronous-unwind-tables -W -Wall -Wwrite-strings -Wcast-qual -Wmissing-format-attribute -pedantic -Wno-long-long -Wno-variadic-macros -Wno-overlength-strings -fno-common -DHAVE_CONFIG_H -I. -I. -I../../gcc/gcc -I../../gcc/gcc/. -I../../gcc/gcc/../include -I../../gcc/gcc/../libcpp/include -I../../gcc/gcc/../libdecnumber -I../../gcc/gcc/../libdecnumber/bid -I../libdecnumber -I../../gcc/gcc/../libbacktrace -o i386.o -MT i386.o -MMD -MP -MF ./.deps/i386.TPo ../../gcc/gcc/config/i386/i386.c while the libgcc2.c is compiled as a pure C file. For GCC we have something like GCC in C++, will we have something like LIBGCC in C++? BR, Terry