eclipse + cdt + mingw + windows error “undefined reference to `WinMain@16'” on build

问题

I installed eclipse, cdt and mingw on my windows XP machine. added C:\MinGW\bin to my PATH.

Created a new c++ project, with one file in it, test.c. the code in it:

int main(){
   int i=1;
}

Trying to build, I get the error: /mingw/lib/libmingw32.a(main.o):main.c:(.text+0xd2): undefined reference to 'WinMain@16'

Notice it's not complaining about test.c but rather about some main.c in one of mingw's libs.

What am I doing wrong?

回答1:

You need to save the .c file first.

回答2:

well, the solution was really weird, but I guess it would make sense to someone more proficient with CDT than me - My main() was inside a .c file. When I changed the suffix to be .cpp, it worked like a charm.

回答3:

main.o from libmingw32.a should not be searched by the linker because the undefined symbol _main from crt2.o is (should be) satisfied by the "int main()" which you wrote.

Please copy & paste the gcc command lines that cdt is executing.

来源：https://stackoverflow.com/questions/3269112/eclipse-cdt-mingw-windows-error-undefined-reference-to-winmain16-on-b