[Mingw-users] Error while compiling hello world

[Jan S. <jan...@gm...>]

Hello,

I just installed MinGW and added the PATH. I can run gcc and thought
everythin is fine. But now I tried to compile hello world

#include<iostream>

usingnamespacestd;

intmain()
{
        cout << "Hello World!";

}

with:

CC = g++ -g -Wno-deprecated
#CFLAGS = -c $(INCLUDES)

all : main

main : main.o
        $(CC)main.o -o main
main.o : main.cpp
        $(CC)main.cpp -o main.o

clean :
        rm -f *.o

And I am getting linker errors for the main-Part:

g++ -g -Wno-deprecated main.o -o main
main.o:crt1.c:(.text+0x280): multiple definition of `_mainCRTStartup'
c:/mingw/bin/../lib/gcc/mingw32/4.7.0/../../../crt2.o:crt1.c:(.text+0x280):
first defined here
main.o:crt1.c:(.text+0x2a0): multiple definition of `_WinMainCRTStartup'
c:/mingw/bin/../lib/gcc/mingw32/4.7.0/../../../crt2.o:crt1.c:(.text+0x2a0):
first defined here
main.o:crt1.c:(.text+0x2c0): multiple definition of `_atexit'
c:/mingw/bin/../lib/gcc/mingw32/4.7.0/../../../crt2.o:crt1.c:(.text+0x2c0):
first defined here
main.o:crt1.c:(.text+0x2d0): multiple definition of `__onexit'
c:/mingw/bin/../lib/gcc/mingw32/4.7.0/../../../crt2.o:crt1.c:(.text+0x2d0):
first defined here
main.o:cygming-crtbegin.c:(.text+0x2e0): multiple definition of
`___gcc_register_frame'
c:/mingw/bin/../lib/gcc/mingw32/4.7.0/crtbegin.o:cygming-crtbegin.c:(.text+0x0):
first defined here
main.o:cygming-crtbegin.c:(.text+0x36c): multiple definition of
`___gcc_deregister_frame'
c:/mingw/bin/../lib/gcc/mingw32/4.7.0/crtbegin.o:cygming-crtbegin.c:(.text+0x8c):
first defined here
main.o:crt1.c:(.bss+0x4): multiple definition of `__argc'
c:/mingw/bin/../lib/gcc/mingw32/4.7.0/../../../crt2.o:crt1.c:(.bss+0x4):
first defined here
main.o:crt1.c:(.bss+0x0): multiple definition of `__argv'
c:/mingw/bin/../lib/gcc/mingw32/4.7.0/../../../crt2.o:crt1.c:(.bss+0x0):
first defined here
main.o:fake:(.idata+0x188): multiple definition of `__imp___ZSt4cout'
main.o:fake:(.idata+0x188): first defined here
c:/mingw/bin/../lib/gcc/mingw32/4.7.0/crtbegin.o:cygming-crtbegin.c:(.text+0x85):
undefined reference to `__Jv_RegisterClasses'


What is the reason for that and how can I solve it? Any suggestions?

Thanks in anticipation.
Jan