[CMake] Cmake and Win32 plugin linking issues.

[Jamie Jones]

On Sun, 2006-08-20 at 11:10 -0400, William A. Hoffman wrote:

> >The "magic" build script for Win32 contain this fragment of the build
> >line for MSVC
> >
> >/DEF:"./../../engine/api/doomsday.def" /IMPLIB:"./%BIN_DIR
> >%/Doomsday.lib"
> >
> >(Full script is here ->
> >http://svn.sourceforge.net/viewvc/deng/trunk/doomsday/build/win32/vcbuild.bat?revision=3509&view=markup )
> >
> >Somehow it produces a .lib file from the main executable that makes the
> >Windows linker happy.
> >
> >I tried to emulate this in cmake with this:
> >
> >## Work around for Win32 wanting something for the plugins to link to
> >IF (WIN32)
> >ADD_LIBRARY (deng STATIC ${DENG_SOURCES} engine/api/doomsday.def)
> >TARGET_LINK_LIBRARIES (deng ${SDL_LIBRARY} ${SDLNET_LIBRARY}
> >${ZLIB_LIBRARIES}
> >${CURSES_LIBRARIES} ${PNG_LIBRARIES} wsock32 winmm gdi32 ole32 user32
> >${CMAKE_SOURCE_DIR}/external/lzss/win32/lzss )
> >ENDIF (WIN32)
> 
> If you want a shared library, why use STATIC.  Remove the STATIC
> and it should work.  CMake will do the right thing with the .def file
> as the source.
> 
> -Bill
> 

G'day Bill,

What I want isn't a library that will be used by the final executable, I
just want to make a library out of the executable to make the linker
happy, then I will discard the library. Win32 will then find the symbols
in the main executable when it loads the plugins.

In any case, Usung Cmake 2.4-patch3 and MinGW I get the following
output.

With STATIC
Warning: resolving _ArgExists at 4 by linking to _ArgExists
Use --enable-stdcall-fixup to disable these warnings
Use --disable-stdcall-fixup to disable these fixups
Cannot export .idata$4: symbol not found
Cannot export .idata$5: symbol not found
Cannot export .idata$6: symbol not found
Cannot export .text: symbol not found
Cannot export LZSS_NULL_THUNK_DATA: symbol not found
Cannot export zlib1_NULL_THUNK_DATA: symbol not found
Creating library file: libdropengl.dll.a
collect2: ld returned 1 exit status
make[2]: *** [plugins/opengl/libdropengl.dll] Error 1
make[1]: *** [plugins/opengl/CMakeFiles/dropengl.dir/all] Error 2
make: *** [all] Error 2

Without STATIC
Cannot export .idata$4: symbol not found
Cannot export .idata$5: symbol not found
Cannot export .idata$6: symbol not found
Cannot export .text: symbol not found
Cannot export LZSS_NULL_THUNK_DATA: symbol not found
Cannot export zlib1_NULL_THUNK_DATA: symbol not found
Creating library file: libdeng.dll.a
collect2: ld returned 1 exit status
make[2]: *** [libdeng.dll] Error 1
make[1]: *** [CMakeFiles/deng.dir/all] Error 2
make: *** [all] Error 2

With STATIC deng.lib builds, but when libdropengl.dll trys to link with
it, it fails. Without STATIC, deng.lib doesn't even link.

I hope my explanation of what I want to do is clear.

Regards,
Yagisan
-- 
GPG/PGP signed mail preferred. No HTML mail. No MS Word attachments
PGP Key ID 0x4B6E7209
Fingerprint E1FD 9D7E 6BB4 1BD4 AEB9 3091 0027 CEFA 4B6E 7209
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 191 bytes
Desc: This is a digitally signed message part
Url : http://public.kitware.com/pipermail/cmake/attachments/20060821/eb131730/attachment.pgp