Undefined reference to extern
This looks like a linker error. You need to make sure you link your executable properly: cc -c general.c cc -c main.c cc general.o main.o ./a.out. ,2015年1月22日 — You have to add int count; to your z.c file. This because of declaring a variable in header file as extern tells to the compiler that the ...
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 Undefined reference to extern 相關參考資料
What is an undefined referenceunresolved external symbol ...
So, as a result - an undefined reference/unresolved external symbol error happens when the linker cannot find global symbols in the object files. https://stackoverflow.com C: undefined reference to a variable when using extern - Stack ...
This looks like a linker error. You need to make sure you link your executable properly: cc -c general.c cc -c main.c cc general.o main.o ./a.out. https://stackoverflow.com Undefined reference to global variable during linking - Stack ...
2015年1月22日 — You have to add int count; to your z.c file. This because of declaring a variable in header file as extern tells to the compiler that the ... https://stackoverflow.com Undefined reference to extern function - C - Stack Overflow
Looks like you are compiling only the main.c and not fun1.c, fun2.c and fun3.c. You can try to compile as follows: gcc -c main.c -o main.o ... https://stackoverflow.com undefined reference when using extern - Stack Overflow
I know this question is old, but it still might be helpful for someone. The global variable (here: MyClass inst ) should not be extern for ... https://stackoverflow.com extern array goes undefined reference error, but works well for ...
You have to declare pallete extern in common.cpp . Right now main.cpp knows that it should look for pallete in separate file but ... https://stackoverflow.com c extern undefined reference - Stack Overflow
Thank you all for the comments. My mistake was to assume that extern double d defines the variable in the same way as double d . https://stackoverflow.com 談談C語言的全域變數和Linux Object 檔案的關係- My code ...
2014年12月9日 — 檔案一：int g_var1; 檔案二：extern int g_val1; 然而，我從來沒有想過如果沒有extern的情況會發生什麼狀況。 ... 這是一個undefined symbol. http://wen00072.github.io C++ Errors: Undefined Reference, Unresolved External ...
2021年6月28日 — Unresolved External Symbol ... The unresolved external symbol is a linker error that indicates it cannot find the symbol or its reference during ... https://www.softwaretestinghel C++ undefined referenceunresolved external symbol問題原因 ...
2017年3月22日 — C++程序編譯時，經常遇到 undefined reference to 或者 unresolved external symbol 問題，這裏闡述一下問題原因及解決方法。 https://vimsky.com |