链接C和C 文件

我想和我构建的两个测试一起编译node.c，list.c和helper-functions.c。

我确定我没有尽我所能编写makefile。您可以检查一下吗？

CFLAGS= -Wall -Wvla -Werror
CXXFLAGS= -lgtest -lgtest_main -pthread
all:
    mkdir -p build
    gcc -c node.c  $(CFLAGS) -o build/node.o
    gcc -c list.c  $(CFLAGS) -o build/list.o 
    gcc -c tests/helper-functions.c -o build/helper-functions.o
    g++ tests/node-tests.cpp $(CXXFLAGS) -o build/node-tests.o
    g++ tests/list-tests.cpp $(CXXFLAGS) -o build/list-tests.o
    g++ build/list.o build/node.o build/helper-functions.o build/node-tests.o build/list-tests.o -o build/tests.out
    ./build/tests.out

当我运行make时，输出为：

mkdir -p build
gcc -c node.c  -Wall -Wvla -Werror -o build/node.o
gcc -c list.c  -Wall -Wvla -Werror -o build/list.o 
gcc -c tests/helper-functions.c -o build/helper-functions.o
g++ tests/node-tests.cpp -lgtest -lgtest_main -pthread -o build/node-tests.o
/tmp/ccFTgPVe.o: In function `CreateNode_FirstTest_Test::TestBody()':
node-tests.cpp:(.text+0x21): undefined reference to `createNode'
node-tests.cpp:(.text+0x31): undefined reference to `data'
node-tests.cpp:(.text+0x108): undefined reference to `next'
node-tests.cpp:(.text+0x1db): undefined reference to `freeNode'
collect2: error: ld returned 1 exit status
make: *** [all] Error 1

肯定会引用Node-Test.cpp中的所有这些功能。

node-tests.cpp：

extern "C"
{
    #include "../../../../headers/list.h"
    #include "../../../../headers/node.h"
    #include "helper-functions.h"
    #include <assert.h>
}
#include "gtest/gtest.h"
#include <iostream>
#include <cstdlib>
#include <string>

// Node* CreateNode(void* data,const size_t dataLength,void* deepCopy(void*,const size_t));
TEST(CreateNode, FirstTest) {
    int x=10;
    Node* pos=createNode(&x,sizeof(x));
    EXPECT_TRUE(*(int*)data(pos)==x);
    EXPECT_TRUE(next(pos)==NULL);
    freeNode(pos);
}

list-tests.cpp类似于node-tests.cpp。