dev-cpp-users

[Dev-C++] Linking Error with SDL

[Scott S. <age...@co...>]

I downloaded the SDL DevPak and have been attempting to use it. I have 
had no luck yet. Whenever I compile, even when using the Dev-C++ SDL 
template, I get a linker error. Everything compiles correctly, but I get 
the following errors:
  [Linker error] undefined reference to `SDL_main'
 C:\Code\Makefile.win [Build Error] exe: *** [sdltest.exe] Error 1

Here's my compile log:
Compiler: Default compiler
Building Makefile: "C:\Code\Makefile.win"
Executing  make...
mingw32-make.exe -f "C:\Code\Makefile.win" all
g++.exe -c sdltest.cpp -o sdltest.o -I"C:/Dev-Cpp/include/c++"  
-I"C:/Dev-Cpp/include/c++/mingw32"  -I"C:/Dev-Cpp/include/c++/backward"  
-I"C:/Dev-Cpp/include"  -I"C:/Dev-Cpp/include/GL"  
-I"C:/Dev-Cpp/include/SDL"    -fexceptions -fexpensive-optimizations -O3

windres.exe -i sdltest_private.rc -I rc -o sdltest_private.res -O coff

g++.exe sdltest.o sdltest_private.res -o "sdltest.exe" 
-L"C:/Dev-Cpp/lib" -L"C:/wxWindows-2.4.2/lib" 
-L"C:/wxWindows-2.4.2/lib/msw" -mwindows -lmingw32 -lSDLmain -lSDL -liberty

C:/Dev-Cpp/lib/libSDLmain.a(SDL_main.o.b)(.text+0x307): undefined 
reference to `SDL_main'

mingw32-make.exe: *** [sdltest.exe] Error 1

Execution terminated

Even when I remove the DSL_Main line form the C Compiler, I still get 
the same errors. Any ideas?

-- 
--Scott Simontis--

Re: [Dev-C++] Linking Error with SDL

[<or...@vp...>]

Scott Simontis wrote:

> I downloaded the SDL DevPak and have been attempting to use it. I have=20
> had no luck yet. Whenever I compile, even when using the Dev-C++ SDL=20
> template, I get a linker error. Everything compiles correctly, but I ge=
t=20
> the following errors:
>  [Linker error] undefined reference to `SDL_main'
> C:\Code\Makefile.win [Build Error] exe: *** [sdltest.exe] Error 1

On windows, your main() function is redefined to SDL_main() by the SDL_ma=
in.h header, and=20
the function will be called from within SDL. However, somehow you need to=
 tell the SDL=20
headers that you're under windows, otherwise your main() will not be rede=
fined to=20
SDL_main(), hence you'll get a linker error, because the library itself w=
ants to call=20
SDL_main(), but it is not present.

Add -DWIN32 or -D_WIN32 to your project options, and the problem should g=
o away.

Note, that I only suspected the above by peeking at the headers, I haven'=
t tested it.

--
Greetings,
   Bal=E1zs