View gcc/g++ default include path

Transferred from: http://gcc.gnu.org/ml/gcc-help/2007-09/msg00205.html

' Gcc-print-prog-name=cc1plus '-V

' g++-print-prog-name=cc1plus '-V

For example, under CentOS 6.3 64bit, the run result of ' g++-print-prog-name=cc1plus '-V is:

Ignoring nonexistent directory "/usr/lib/gcc/x86_64-redhat-linux/4.4.6/include-fixed"

Ignoring nonexistent directory "/usr/lib/gcc/x86_64-redhat-linux/4.4.6/. /.. /.. /.. /x86_64-redhat-linux/include "

#include "..." Search starts here:

#include <...> search starts here:

/usr/lib/gcc/x86_64-redhat-linux/4.4.6/. /.. /.. /.. /include/c++/4.4.6

/usr/lib/gcc/x86_64-redhat-linux/4.4.6/. /.. /.. /.. /include/c++/4.4.6/x86_64-redhat-linux

/usr/lib/gcc/x86_64-redhat-linux/4.4.6/. /.. /.. /.. /include/c++/4.4.6/backward

/usr/local/include

/usr/lib/gcc/x86_64-redhat-linux/4.4.6/include

/usr/include

End of search list.

That is, the default include path is

/usr/include/c++/4.4.6

/usr/include/c++/4.4.6/x86_64-redhat-linux

/usr/include/c++/4.4.6/backward

/usr/local/include

/usr/lib/gcc/x86_64-redhat-linux/4.4.6/include

/usr/include

View gcc/g++ default include path