[Mingw-notify] [ mingw-Bugs-1722331 ] --add-stdcall-alias and -shared options

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Bugs item #1722331, was opened at 2007-05-21 09:32
Message generated for change (Comment added) made by dannysmith
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Category: None
Group: None
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: Jim Pattee (jimp03)
Assigned to: Nobody/Anonymous (nobody)
Summary: --add-stdcall-alias and -shared options

Initial Comment:
    *  OS version ( Windows XP )
    * gcc version ( 3.4.2 )
    * ld version ( 2.15.94 )
    * mingw-runtime version ( 3.9 )
    * w32api version ( 3.6 )
 
I have a program that loads a dll explicitly using LoadLibrary() and GetProcAddress(). GetProcAddress uses the UNDECORATED function name in the dll call.

When the dll is compiled using dllwrap.exe and the option --add-stdcall-alias, the dll is called without a problem. 

When the dll is compiled using g++ with the -shared option and --add-stdcall-alias, the GetProcAddress fails with "The specified procedure could not be found." When I add the @16 suffix to the function name it is called correctly. It seems like the --add-stdcall-alias doesn't have an effect when g++ is used with the -shared option.

Following is a copy of the command line used to call the linker. The file libAStyle.a is not used in linking the calling program.

-----------------------------------------------

g++.exe -shared  ../objd/ASBeautifier.o ../objd/ASEnhancer.o ../objd/ASFormatter.o ../objd/ASResource.o ../objd/astyle_main.o -L"C:/_jpFiles/Programs/Dev-Cpp/Lib" --add-stdcall-alias --no-export-all-symbols -s -Wl   -Wl,--out-implib,../bin/libAStyle.a -o ../bin/AStyle.dll

Creating library file: ../bin/libAStyle.a

Execution terminated
Compilation successful


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>Comment By: Danny Smith (dannysmith)
Date: 2007-05-21 10:04

Message:
Logged In: YES 
user_id=11494
Originator: NO

--add-stdcall-alias is a linker, not a compiler, option. 
You should have gotten a warng like:
unrecognized command line option "-fadd-stdcall-alias"

Try using -Wl,--add-stdcall-alias

Danny

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