dll linking trouble

[Nobody/Anonymous]

hi there

I got a little problem using the UnRAR.dll

I tried to compile the sample code published with the dll, but I got many linker errors.

************************************************
Compiler: Default compiler
Building Makefile: "C:\ursin\data\C_C++\UnRARDLL\Example\C\Makefile.win"
Fhrt  make clean aus
rm -f UnRDLL.o UnRAR_private.res UnRAR.exe

g++.exe -c UnRDLL.c -o UnRDLL.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" 

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

g++.exe UnRDLL.o UnRAR_private.res -o "UnRAR.exe" -L"C:/Dev-Cpp/lib" unrar.lib

UnRDLL.o(.text+0x174):UnRDLL.c: undefined reference to `RAROpenArchiveEx@4'
UnRDLL.o(.text+0x1df):UnRDLL.c: undefined reference to `RARSetCallback@12'
UnRDLL.o(.text+0x1fe):UnRDLL.c: undefined reference to `RARReadHeader@8'
UnRDLL.o(.text+0x2c6):UnRDLL.c: undefined reference to `RARProcessFile@16'
UnRDLL.o(.text+0x313):UnRDLL.c: undefined reference to `RARCloseArchive@4'
UnRDLL.o(.text+0x3eb):UnRDLL.c: undefined reference to `RAROpenArchiveEx@4'
UnRDLL.o(.text+0x454):UnRDLL.c: undefined reference to `RARSetCallback@12'
UnRDLL.o(.text+0x49f):UnRDLL.c: undefined reference to `RARReadHeaderEx@8'

UnRDLL.o(.text+0x52b):UnRDLL.c: undefined reference to `RARProcessFile@16'
UnRDLL.o(.text+0x567):UnRDLL.c: undefined reference to `RARCloseArchive@4'

make.exe: *** [UnRAR.exe] Error 1

Ausfhrung beendet
************************************************

As you can see I linked the "unrar.lib" file to my project, so I DON'T UNDERSTAND WHY THIS WON'T
WORK!

CAN YOU HELP ME???

thank to you, guys!! ;)

[Liviu Nicolescu]

The lib file provided with unrardll package is not compatible with gcc.

In order to create an import lib compatible with gcc, one should do the following steps:

1-download the pexports tool from http://mywebpage.netscape.com/yongweiwu/stdcall.htm

2-unzip pexports-0.43.zip and copy pexports.exe in a directory that is in the PATH

3-open a command prompt window and cd to the directory where unrar.dll is located

4-type "pexports unrar.dll >unrar.def"

5- open unrar.def in a text editor and modify it like this:
LIBRARY unrar.dll
EXPORTS
RARCloseArchive@4
RARGetDllVersion@0
RAROpenArchive@4
RAROpenArchiveEx@4
RARProcessFile@16
RARProcessFileW@16
RARReadHeader@8
RARReadHeaderEx@8
RARSetCallback@12
RARSetChangeVolProc@8
RARSetPassword@8
RARSetProcessDataProc@8
___CPPdebugHook DATA

6-run "dlltool -d unrar.def --dllname unrar.dll --output-lib libunrar.a --kill-at" in the command prompt window

7-add libunrar.a at your linker settings and recompile your project

Good luck

Liviu

[Nobody/Anonymous]

You can't use a .lib as an import library.  It has to be converted to a .a libaray.  Information at the following link.

http://lair.gamedeveloper.net/all/entityview.php?eid=641

Also to link a library you need to use -l before the library name. i.e. -lunrar

[Liviu Nicolescu]

Yes, I forgot about reimp ;)

"reimp unrar.lib" will create the import library.

You can find both reimp and pexports binaries in the mingw-utils-0.2.tar.gz package from mingw.org.

Liviu

[Nobody/Anonymous]

THANK YOU VERY VERY MUCH GUYS!!!

THAT WAS THE BEST AND MOST FAST POSTING I EVER SAW! MY PROBLEM IS SOLVED! I'M NEAR TO SAY "I LOVE YOU ALL" !! :)

thanks to you

ps:"liviu" did you used the "unrar.dll" too??