Alleggl Teething Troubles

Alleggl Teething Troubles

govind

Member #3,067

December 2002

After successfully(!) installing Allegro and AllegroGL with commands "vcvars32.bat", "mingw32-make DEBUGMODE=1" AND "mingw32-make install DEBUGMODE=1" calls, building the very first tutorial "agl01.cpp" 8-) in vc++6 gives the following error-log:
"Output Window
Linking...
agl01.obj : error LNK2001: unresolved external symbol __imp__glClearColor@16
agl01.obj : error LNK2001: unresolved external symbol __imp__set_gfx_mode
agl01.obj : error LNK2001: unresolved external symbol __imp__install_keyboard
agl01.obj : error LNK2001: unresolved external symbol _install_allegro_gl
agl01.obj : error LNK2001: unresolved external symbol __imp__install_allegro
agl01.obj : error LNK2001: unresolved external symbol __imp__readkey
agl01.obj : error LNK2001: unresolved external symbol __imp__glClear@4
agl01.obj : error LNK2001: unresolved external symbol __imp___WinMain
LIBCD.lib(crt0.obj) : error LNK2001: unresolved external symbol _main
Debug/agl01.exe : fatal error LNK1120: 9 unresolved externals
Error executing link.exe.
Results
agl01.exe - 10 error(s), 0 warning(s)"
These unresolved external symbol errors are beyond me.
Thanks for any help.
Moe8-)

Moe

the_y_man

Member #1,770

December 2001

you probably forgot to link the lib

Goodbytes

Member #448

June 2000

What libraries are you linking with? The agl, alleg, opengl32 and glu32 libraries are required to compile AllegroGL programs.

--
~Goodbytes

govind

Member #3,067

December 2002

Thanks to your valuable suggestions, I have now linked alleg.lib, agl.lib, openl32.lib and glu32.lib and as a result the whole bunch of errors has now shrunk to the following, just two which I am unable to eliminate:

"Output Window

Linking...
LIBCD.lib(crt0.obj) : error LNK2001: unresolved external symbol _main
Debug/agl01.exe : fatal error LNK1120: 1 unresolved externals
Error executing link.exe.

Results
agl01.exe - 2 error(s), 0 warning(s)"

Looking forward to your further help.
Thanks.
Moe

Moe

Bob

Free Market Evangelist

September 2000

Make sure your project is a Windows Application and not a Windows Console Application.

--
- Bob
[ -- All my signature links are 404 -- ]

govind

Member #3,067

December 2002

Thaks Bob. Now I get "0" warnings and "0" errors as indicated below:
Output Window
Linking...
Results
agl01.exe - 0 error(s), 0 warning(s)

However, on clicking agl01.exe icon in debug folder, I do not see anything.
I can mail the agl01.exe folder if that will help in diagnosis.
Thanks.
Moe

Moe

Zaphos

Member #1,468

August 2001

As in, you see an empty window?
If yes, try the code here:
http://www.allegro.cc/forums/view_thread.php?_id=217716#post_217838 And tell us if that works ...

govind

Member #3,067

December 2002

I have just tried the code from the suggested site but it produces the same execute file which on clicking flicks and disappears. I forgot to mention that even though I am building the project as "Windows Application", what I get as an end product is a "Console execute" file with rectangular icon!!! This is the first time I am seeing this phenomenon.
Thanks for your help which has made me come so far.
Moe
P.S. I also get this message from the debugger:
LIBCD.lib(wincrt0.obj) : error LNK2001: unresolved external symbol _WinMain@16
And also:
LINK : warning LNK4098: defaultlib "LIBC" conflicts with use of other libs; use /NODEFAULTLIB:library
These however disappear on recompiling the source
file and rebuilding the execute file.

Moe