睿豐德科技 專注RFID識別技術和條碼識別技術與管理軟件的集成項目。質量追溯系統、MES系統、金蝶與條碼系統對接、用友與條碼系統對接

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

 

`gcc -print-prog-name=cc1plus` -v

`g++ -print-prog-name=cc1plus` -v

 

例如，CentOS 6.3 64bit 下，`g++ -print-prog-name=cc1plus` -v 的運行結果是：

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.

即，默認include路徑是

 /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

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