main(）首先在这里定义

我正试图在Eclipse中编译我的项目。

然而，它说main()被定义了不止一次。我grep查看了我的项目目录，它在main.cpp中只找到了main()的一个定义。

显然它在其他地方。也许是我链接的目录。

我链接的唯一目录是：

-ljson_linux-gcc-4.5.2_libmt

编译器输出为：

make all 
Building file: ../src/main.cpp
Invoking: GCC C++ Compiler
g++ -Ijson_linux-gcc-4.5.2_libmt -I/usr/include/mysql -I/usr/include/jsoncpp-src-0.5.0/include -O0 -g3 -Wall -c -fmessage-length=0 -Ijson_linux-gcc-4.5.2_libmt -MMD -MP -MF"src/main.d" -MT"src/main.d" -o"src/main.o" "../src/main.cpp"
Finished building: ../src/main.cpp
Building target: Atms
Invoking: GCC C++ Linker
g++ -L-L/usr/include/jsoncpp-src-0.5.0/include/ -o"Atms"  ./src/atmstypes.o ./src/base64.o ./src/hregex.o ./src/libparser.o ./src/log.o ./src/main.o ./src/serv.o ./src/sqlfeeder.o ./src/teleindex.o ./src/telepipe.o ./src/telesharedobject.o ./src/treet.o ./src/ttable.o   -l-ljson_linux-gcc-4.5.2_libmt
./src/serv.o: In function `main':
/usr/include/c++/4.4/new:101: multiple definition of `main'
./src/main.o:/home/idan/workspaceCpp/Atms/Debug/../src/main.cpp:12: first defined here
/usr/bin/ld: cannot find -l-ljson_linux-gcc-4.5.2_libmt
collect2: ld returned 1 exit status
make: *** [Atms] Error 1

main.cpp:

#include <stdio.h>
#include <stdlib.h>
#include <regex.h>
#include <iostream>
#include <string.h>
#include <string>
#include "../h/hregex.h"
using namespace std;

string s = "this and7 that";
int main(int argc,char** argv){
    cout << hregex::InitRegex() << endl;
    cout <<  hregex::CheckHostnameField(s)<< "= this and7 that" << endl;
    s = "this and7 that";
    cout <<  hregex::CheckURLField(s)<< "= this and7 that" << endl;
    s = "/lol/idan.html";
    cout <<  hregex::CheckURLField(s)<< "= /lol/idan.html" << endl;
    s = "/lol2#/idan.html";
    cout <<  hregex::CheckURLField(s)<< "= /lol2#/idan.html" << endl;
    return 0;
}

如何防止出现错误？