g++ ld: symbol(s) not found for architecture x86_64

I had a similar warning/error/failure when I was simply trying to make an executable from two different object files (main.o and add.o). I was using the command:

gcc -o exec main.o add.o

But my program is a C++ program. Using the g++ compiler solved my issue:

g++ -o exec main.o add.o

I was always under the impression that gcc could figure these things out on its own. Apparently not. I hope this helps someone else searching for this error.

Related Posts:

  1. What is the difference between g++ and gcc?
  2. Convert char to int in C and C++
  3. Undefined reference to vtable
  4. Expected initializer before function name
  5. Inheriting constructors
  6. Undefined reference to vtable
  7. C ++ error: a expected initializer before [function name]
  8. Inheriting constructors
  9. undefined reference to ‘std::cout’
  10. Fatal error: iostream: No such file or directory in compiling C program using GCC
  11. MinGW: “gcc is not recognized as an internal or external command”
  12. Compiling a C++ program with gcc
  13. gcc/g++: “No such file or directory”
  14. error: use of deleted function
  15. CMake error at CMakeLists.txt:30 (project): No CMAKE_C_COMPILER could be found
  16. cannot declare variable ‘’ to be of abstract type ‘’
  17. Debug vs Release in CMake
  18. Debug vs Release in CMake
  19. What does the fpermissive flag do?
  20. gcc: undefined reference to
  21. Update GCC on OSX
  22. GCC -fPIC option
  23. OpenCV Error: Assertion failed (size.width>0 && size.height>0) simple code
  24. gcc -g :what will happen
  25. Warning : overflow in implicit constant conversion
  26. Converting a Cubemap into Equirectangular Panorama
  27. cc1.exe System Error – libwinpthread-1.dll missing – But it isn’t
  28. Fatal error: iostream: No such file or directory in compiling C program using GCC
  29. How to Check the Version of my gcc?
  30. Negative RGB Values
  31. Make / gcc cryptic error 2: how to have more information?
  32. Linker error: “linker input file unused because linking not done”, undefined reference to a function in that file
  33. Getting an error “fopen’: This function or variable may be unsafe.” when compling [duplicate]
  34. How many spaces for tab character(\t)?
  35. How do I build a graphical user interface in C++? [closed]
  36. What are the differences between a pointer variable and a reference variable in C++?
  37. What does “dereferencing” a pointer mean?
  38. What is a char*?
  39. Usage and Syntax of std::function
  40. Very basic C++ program issue – Invalid operands to binary expression
  41. Passing an array by reference
  42. Why use conio.h?
  43. Why is enum class preferred over plain enum?
  44. How to fix C++ error: expected unqualified-id
  45. How to track down a “double free or corruption” error
  46. Error: “expression must have integral or unscoped enum type” [duplicate]
  47. How to fix C++ error: expected unqualified-id
  48. Reading from file in c++ ifstream
  49. How do I iterate over the words of a string?
  50. C++ IDE for Macs
  51. Identifier not found error on function call
  52. Is there a decent wait function in C++?
  53. streambuf::xsgetn and state flags
  54. C++ table alignment – cout and iomanip
  55. Debug assertion failed. C++ vector subscript out of range
  56. Vector is not a Template?
  57. Displaying a vector of strings in C++
  58. error: expected unqualified-id before ‘if’
  59. The #include exists, but I get an error: identifier “cout” is undefined. Why?
  60. Understanding “corrupted size vs. prev_size” glibc error
  61. Is the practice of returning a C++ reference variable evil?
  62. Is there ‘byte’ data type in C++?
  63. How to return a string from a C++ function?
  64. C++, random number w/ range of 1-6
  65. Why is my HelloWorld function not declared in this scope?
  66. What is the difference between include_directories and target_include_directories in CMake?
  67. Undefined reference to constructor
  68. Copy a file in a sane, safe and efficient way
  69. c++ convert string to hex
  70. expected constructor, destructor, or type conversion before ‘(’ token
  71. Passing as const and by reference – Worth it?
  72. expression did not evaluate to a constant- c++
  73. Generate SHA256 in c++
  74. A good and basic implementation of BigInt class in C++
  75. What is the C equivalent to the C++ cin statement?
  76. c++ Read from .csv file
  77. How to check if input is numeric in C++
  78. C++ Big Integer
  79. How do I create a random alpha-numeric string in C++?
  80. Learning to work with audio in C++
  81. Creating an instance of class
  82. sorting in std::map where key is a std::string
  83. System not declared in scope?
  84. no debugging symbols found when using gdb
  85. C++ Array of pointers: delete or delete []?
  86. ERROR: Control may reach end of non-void function /
  87. Function stoi not declared
  88. What’s the difference between while(cin) and while(cin >> num)
  89. Too many arguments to function
  90. not declared in this scope’ when using strlen()
  91. DEV C ++ Error: expected declaration before ‘}’ token
  92. “cannot be used as a function error”
  93. error LNK2019: unresolved external symbol _WinMain@16 referenced in function ___tmainCRTStartup
  94. Displaying contents of a vector container in C++
  95. Converting string to unsigned int returns the wrong result
  96. Visual c++ can’t open include file ‘iostream’
  97. c++ vector bubble sort
  98. compare and swap vs test and set
  99. Weighted random numbers
  100. compare and swap vs test and set

Leave a Comment