Hi,
I sent the mail above to Alan yesterday and resent it to the list a
minute ago. I actually found a solution for this problem. Looking in the
Cmake mail archives I found discussions about that topic, but no nice
solution. It was suggested to link to system libraries directly
(target_link_libraries(exe gdi32 comdlg32)) but then we would have
warnings from cmake 2.6, because we don't use absolute paths. But it's
possible to get the path to the MinGW C compiler from CMAKE_C_COMPILER
and the import libraries path is always at the same position relative to
this binary. Then I find gdi32 and comdlg32 via find_library(
GDI32_LIBRARY gdi32 HINTS ${MINGWLIBPATH} ) and the correct import
library is found. I commited this solution and ask other MinGW users to
test the latest svn code.
Thanks,
Werner
Werner Smekal wrote:
> Hi Alan,
>
> sorry that it took me such a long time to test this, but in the moment
> it doesn't even work for mingw anymore. The problem is, that we're
> looking for the gdi32 and comdlg library. These are system libraries and
> are found in c:\windows\system32 as .dll. MinGW can link to dll files,
> but not directly to dll files which are made by other compilers. The
> correct .a files are found in the lib directory of the MinGW
> distribution. Problem is now, that cmake looks for libgdi32.a or
> libgdi32.dll, can't find it, because it's in the MinGW lib directory,
> which CMake doesn't know. CMake then searches for gdi32.lib/gdi32.dll
> and finds it in the windows system32 directory, but mingw can't link to
> that (same for comdlg).
>
> I' gonna ask the cmake mailing list, since I have no real idea how to
> solve that cleanly. We could either add the lib directory of MinGW to
> the FindGDI32.cmake script, but it may be in different (absolut)
> directories. We can ask the user to add the lib directory to
> CMAKE_LIBRARY_PATH, but wingcc is a basic driver for windows, so the
> user shouldn't mess around so much. Additionally, if he doesn't do it,
> plplot won't compile, since the dll cmake finds is the wrong one.
>
> We could hardcode it for the MinGW case, but than we get error messages
> from CMake that we use libraries without absolut paths.
>
> I'll ask the CMake guys.
>
> Werner
>
> Alan W. Irwin wrote:
>> Hi Werner:
>>
>> According to the following commit message
>>
>> ********
>> r7038 | airwin | 2006-08-31 10:34:18 -0700 (Thu, 31 Aug 2006) | 4 lines
>>
>> AWI for Werner Smekal. Apply patch for support of Borland C++ 5.5
>> free command line tool (bcc). Werner tells me that C++ examples still
>> don't
>> work with bcc, but everything else does.
>> ********
>>
>> you were the author of the BORLAND logic in FindGDI32.cmake. I tried to
>> propagate that logic for my recent change to FindGDI32.cmake, but I didn't
>> understand the BORLAND logic that well. (There were some assumptions in
>> the
>> logic which I didn't understand.) Could you please review that logic and
>> also test it with your Borland compiler to make sure it works?
>>
>> Thanks in advance,
>>
>> Alan
>> __________________________
>> Alan W. Irwin
>>
>> Astronomical research affiliation with Department of Physics and Astronomy,
>> University of Victoria (astrowww.phys.uvic.ca).
>>
>> Programming affiliations with the FreeEOS equation-of-state implementation
>> for stellar interiors (freeeos.sf.net); PLplot scientific plotting software
>> package (plplot.org); the libLASi project (unifont.org/lasi); the Loads of
>> Linux Links project (loll.sf.net); and the Linux Brochure Project
>> (lbproject.sf.net).
>> __________________________
>>
>> Linux-powered Science
>> __________________________
>
>
--
Dr. Werner Smekal
Institut fuer Allgemeine Physik
Technische Universitaet Wien
Wiedner Hauptstr 8-10
A-1040 Wien
Austria
email: [EMAIL PROTECTED]
web: http://www.iap.tuwien.ac.at/~smekal
phone: +43-(0)1-58801-13463 (office)
+43-(0)1-58801-13469 (laboratory)
fax: +43-(0)1-58801-13499
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