main.o: In function `main': main.c:(.text+0x7): undefined reference to `test' collect2: ld returned 1 exit status 这就是最典型的undefined reference错误,因为在链接时发现找不到某个函数的实现文件,本例中test.o文件中包含了test()函数的实现,所以如果按下面这种方式链接就没事了。 gcc -o main...
如果将函数的实现放在cpp文件中,并且标记为inline, 那么该函数对其他编译单元不可见(类似static的效果),也就是其他cpp文件不能链接该函数库,这就是标题中出现的 … undefined reference to … 问题原因就是,编译器在编译一个inline函数时,需要知道其完整定义,如果编译器在本编译单元找不到inline函数定义就会报错(inli...
/usr/bin/ld: main.o: in function `main': main.cc:(.text+0x36): undefined reference to `test::func()' clang-11: error: linker command failed with exit code 1 (use -v to see invocation) 链接步骤炸了。首先看看是否缺文件: ls *.o 输出: func.o main.o 这就说明不缺文件,排除了一...
如果是类成员函数,会默认内联的.比如我在Test.H中 定义 pragma once class Test { public:int a;int test() const;};Test.cc中就可以:include "test.h"int Test::test() const { return 0;} main.cc include "test.h"void main(){ Test t;t.test();} 这样比较好.
$(PATH_ONE)/libutil.a(util.o): In function `ZJ::open_max()': util.cpp:(.text+0x56): undefined reference to `err_sys(char const*, ...)' 这里,我知道的是:ZJ::open_max中有对err_sys的调用,我不明白的是:如果确实有undefined reference错误,我没删那两行的时候就该报错了吧?我又没改make...
inline void f(void) { } int main(void) { f(); } leads to: undefined reference to `f' https://godbolt.org/z/W11hd1MTb
In function .. undefined reference to .. Oct 25, 2012 at 3:58am mih (24) Hello All, I am getting below error while trying to link DB2 libraries, any clues what must be going wrong here.. Many thanks for your help. 12345678910 g++ -O -pthread -I. -I/home/myhome/ia-k_L/src...
$ g++ foo.o -o program.bin foo.o: In function `main': foo.cpp:(.text+0xb): undefined reference to `A::value' foo.cpp:(.text+0x10): undefined reference to `bar()' foo.cpp:(.text+0x19): undefined reference to `foo(int, int)' collect2: error: ld returned 1 exit status ...
Pay attention to the 'implicit parameter declaration' warning (this is actually more of a programming error, and I consider this as an error not a warning). The issue is that you have missed to include "fsl_gpio.h" in MKF64F_project.c. That symbol is defined as inline function in tha...
I already used the reference to stackoverflow but did not find anything. VSCode: 1.76.2 OS: Ubuntu 20.04 (VM) The problem is that last week everything was linked correctly (libraries were found) and now there is an undefined reference to a function. In my opinion, tasks.json as well as...