Question

我写了一个test.cpp：

      #include <iostream>
      #include <stack>
      #include <boost/lexical_cast.hpp>
      #include <boost/config/warning_disable.hpp>
      #include <boost/spirit/include/qi.hpp>
      #include <boost/spirit/include/phoenix.hpp>

      using namespace std;
      namespace phoenix = boost::phoenix;
      namespace qi = boost::spirit::qi;
      namespace ascii = boost::spirit::ascii;

     struct calculator
     {
      bool interpret(const string& s);
      void do_neg();
      void do_add();
       void do_sub();
      void do_mul();
        void do_div();
        void do_number(const char* first, const char* last);
          int val() const;
      private:
      stack<int> values_;
      int *pn1_, n2_;
      void pop_1();
      void pop_2();
      };
     ......................
     ....................

但是当我使用g ++ test.cpp -o test时，会出现像boost/lexical_cast.hpp: No such file or directory这样的错误，但我已将boost中的所有文件（从boost.org下载）复制到test.cpp文件夹，如何让g ++知道标题路径？感谢

我使用了g++ test.cpp -o test

使用" "是不可能的，我有很多标头的依赖。

Answer 1

您必须确保修改include to g ++的命令。阅读手册页（这是你最好的朋友）：

Add the directory dir to the list of directories to be searched for
header files.  Directories named by -I are searched before the
standard system include directories.  If the directory dir is a
standard system include directory, the option is ignored to ensure
that the default search order for system directories and the
special treatment of system headers are not defeated .  If dir
begins with "=", then the "=" will be replaced by the sysroot
prefix; see --sysroot and -isysroot.

对于你来说，命令应如下所示：

g++ -I path/to/boost test.cpp

使用boost库的C ++库

1 个答案: