Mac 上執行 visual studio code 的c++ 標頭檔連結問題。

#vscode #headerfile #c++ #標頭檔

hsushihli 2021-02-08 17:32:05 ‧ 3566 瀏覽

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在mac terminal 執行 gcc Source.cpp 出現以下回報
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)

目前資料夾中有三個file, 分別都有引用到。不知道是什麼問題。

Source.cpp
2. {#include
#include
#include "Rectangle.h"}
Rectangle.h
3. {#ifndef RECTANGLE_H
#define RECTANGLE_H
class Rectangle..
#endif}
Rectangle.cpp
4. {#include "Rectangle.h"}

感謝查看！！！

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1 個回答

海綿寶寶

iT邦大神 1 級 ‧ 2021-02-09 08:56:09

最佳解答

試試看一次 gcc 兩個檔案
gcc Source.cpp Rectangle.cpp

mac$ gcc Source.cpp
Undefined symbols for architecture x86_64:
  "_main", referenced from:
     implicit entry/start for main executable
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
mac$ gcc Source.cpp Rectangle.cpp
mac$ ls -al a.*
-rwxr-xr-x  1 mac  staff  16536  2  9 08:53 a.out
mac$

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檢舉

hsushihli iT邦新手 5 級 ‧ 2021-02-09 18:01:03 檢舉

目前狀況是，若直接由vscode 上面執行
會出現以下feedback。
Undefined symbols for architecture x86_64:
"Rectangle::getPerimeter()", referenced from:
_main in Source-673073.o
"Rectangle::getArea()", referenced from:
_main in Source-673073.o
"Rectangle::Rectangle(double, double)", referenced from:
_main in Source-673073.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
但若是由cmd 執行 gcc Source.cpp Rectangle.cpp
會出現以下feedback.
Undefined symbols for architecture x86_64:
"std::__1::locale::use_facet(std::__1::locale::id&) const", referenced from:
std::__1::ctype const& std::__1::use_facet<std::__1::ctype >(std::__1::locale const&) in Source-9206a8.o
"std::__1::ios_base::getloc() const", referenced from:
std::__1::basic_ios<char, std::__1::char_traits >::widen(char) const in Source-9206a8.o
.....
Dwarf Exception Unwind Info (__eh_frame) in Source-9206a8.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
太長就貼了一部分而已。