错误：对“sqlite3_open”的未定义引用

Question

I'm trying to get started with the C++ API for SQLite.

#include <iostream>
#include <sqlite3.h>

using namespace std;

int main()
{
    sqlite3 *db;
    if (sqlite3_open("ex1.db", &db) == SQLITE_OK)
        cout << "Opened db successfully\n";
    else
        cout << "Failed to open db\n";

    return 0;
}   

Compiling this using the command "g++ main.cpp" gives the following error:

/tmp/ccu8sv4b.o: In function `main':
main.cpp:(.text+0x64): undefined reference to `sqlite3_open'
collect2: ld returned 1 exit status

What could have gone wrong? Hasn't sqlite3 properly installed in the server I'm compiling this in?

Answer 1

您需要将 sqlite3 库与您的程序一起链接：

g++ main.cpp -lsqlite3

Answer 2

You need to adjust your linker flags to link in the sqlite3 library. Libraries are usually installed in /usr/lib or /usr/lib64

Alternatively, you can copy the sqlite3.c file to your project directory and compile it as part of the g++ command:

g++ main.cpp sqlite3.c 

as per: http://sqlite.org/cvstrac/wiki?p=HowToCompile

Answer 3

First step: Install all library sqlite3 with the command:

        sudo apt-get install libsqlite3-dev

With that you can use #include <sqlite3.h> in a programm of C or C++ .

Second step: To compile the program by console:

C++:

        g++ program.cpp -o executable -lsqlite3

        ./executable

C:

        gcc program.c -o executable -lsqlite3

        ./executable

Answer 4

在命令行或 Open IDE -> project -> properties -> locate lib file for sqlite3 中将您的程序链接到 lib g++ yourProgram.c -lsqlite3 。

Answer 5

HELLO EVERYONE

if you using Devcpp

1. you just need to add the sqlite3.dll file in the project folder.

2. Goto Compiler option in Tools >>

3. just write sqlite3.dll next to >> Add the following commands when calling compiler

Screen shot

Compile using command

NOTE : you need to install MinGW (compiler)

g++ file.cpp -o output.exe sqlite3.dll

compile using VS

You need to define sqlite3.dll in linker in project properties

HAVE A NICE DAY