错误，而与MATLAB MEX编译

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我尝试使用MATLAB MEX编译，但我不断收到此错误：错误，而与MATLAB MEX编译

Warning: You are using gcc version "5.4.0-6ubuntu1~16.04.1)". The version 
    currently supported with MEX is "4.2.3". 
    For a list of currently supported compilers see: 
    http://www.mathworks.com/support/compilers/current_release/ 

In file included from descriptor.h:4:0, 
       from calc_shot.cpp:11: 
mesh.h: In function ‘double magnitude(const vec3d<T>&)’: 
mesh.h:106:9: error: ‘sqrt’ is not a member of ‘std’ 
    return std::sqrt((v1.x*v1.x) + (v1.y*v1.y) + (v1.z*v1.z)); 
     ^
In file included from calc_shot.cpp:11:0: 
descriptor.h: At global scope: 
descriptor.h:7:57: error: expected class-name before ‘{’ token 
class invalid_mesh_descriptor : public std::logic_error { 
                 ^
descriptor.h: In constructor ‘invalid_mesh_descriptor::invalid_mesh_descriptor()’: 
descriptor.h:9:57: error: expected class-name before ‘(’ token 
    explicit invalid_mesh_descriptor() : std::logic_error("Exception invalid_mesh_descriptor caught.") {} 
                 ^
descriptor.h:9:57: error: expected ‘{’ before ‘(’ token 
descriptor.h: In constructor ‘invalid_mesh_descriptor::invalid_mesh_descriptor(const string&)’: 
descriptor.h:10:70: error: expected class-name before ‘(’ token 
    invalid_mesh_descriptor(const std::string& msg) : std::logic_error("Exception invalid_mesh_descriptor caught: "+msg) {} 
                    ^
descriptor.h:10:70: error: expected ‘{’ before ‘(’ token 
descriptor.h: In function ‘std::ostream& operator<<(std::ostream&, const vec_descriptor<T>&)’: 
descriptor.h:123:45: error: no match for ‘operator<<’ (operand types are ‘std::ostream {aka std::basic_ostream<char>}’ and ‘const char [2]’) 
     for (size_t k=1; k < d.size(); ++k) s << " " << d(k); 
              ^
In file included from /usr/include/c++/5/string:52:0, 
       from descriptor.h:5, 
       from calc_shot.cpp:11: 
/usr/include/c++/5/bits/basic_string.h:5172:5: note: candidate: template<class _CharT, class _Traits, class _Alloc> std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&, const std::__cxx11::basic_string<_CharT, _Traits, _Alloc>&) 
    operator<<(basic_ostream<_CharT, _Traits>& __os, 
    ^
/usr/include/c++/5/bits/basic_string.h:5172:5: note: template argument deduction/substitution failed: 
In file included from calc_shot.cpp:11:0: 
descriptor.h:123:48: note: mismatched types ‘const std::__cxx11::basic_string<_CharT, _Traits, _Alloc>’ and ‘const char [2]’ 
     for (size_t k=1; k < d.size(); ++k) s << " " << d(k); 
               ^

    mex: compile of ' "calc_shot.cpp"' failed.

我用来编译此代码LD_PRELOAD但此刻我不记得的说法，我该如何解决？

来源

2016-08-01 Luca

我注意到，所有的编译器不包括头一样。您可能需要添加一些额外的标题。第一个例子，'mesh.h：106：9：error：'sqrt'不是'std'的成员。原因可能实际上是你需要'#include '。可能还有其他类似的问题，但我不确定。 – patrik

另一个例子是'descriptor.h：123：45：错误：'operator <<'不匹配（操作数类型是'std :: ostream {aka std :: basic_ostream }'和'const char [2]'） '。这可能需要'＃包括' – patrik

代码是好的，我用compie它使用正确的参数，但我不记得他们 – Luca

解决方案：

mex -v calc_shot.cpp shot_descriptor.cpp -DUSE_FLANN -I"C:\Program Files\flann\include" -I/usr/include/eigen3

使用该命令程序的工作原理就像一个魅力

来源

2016-08-02 19:24:33 Luca

错误，而与MATLAB MEX编译

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