Well I seem to have a typo in my original CMakeLists.txt file which
was causing part of the problem and I did not fully understand what
the other problems were.. but now I have a better idea which I am
going to elaborate on a bit just in case someone else googles for the
same problem.
There were 3 problems:
1: The /NODEFAULTLIB problem. What was happening was that between the
previous libraries that I had compiled (HDF5) and my new libraries
and my Application and Qt there was a mismatch between the type of C/C
++ runtime used for each. One of them had a "Single Threaded" runtime
where the others were compiled against the "Multi-Threaded" runtime.
Once I checked each project to make sure each project had the same
settings, then I no longer needed this setting.
2:MSVCRTD.lib(crtexew.obj) : error LNK2019: unresolved external
symbol [EMAIL PROTECTED] referenced in function _WinMainCRTStartup. This is
caused because if you are building a "Windows" application versus a
"console" application you need to have this function (_WinMain() ).
Qt provides this for Windows in the "qtmain" library. So adding a
line like the following to your CMakeLists.txt file should alleviate
the problem.
SET (${QT_LIBRARIES} qtmain ${QT_LIBRARIES})
And the secret to make this work is to _actually_ include the $
{QT_LIBRARIES} in your TARGET_LINK_LIBRARIES command ( which I
finally noticed that I was NOT doing.. oops).
3: My third problem was more with HDF5 in a Dynamic Library. I needed
to have the following:
ADD_DEFINITIONS(-DHDF5_MODULES_ON)
ADD_DEFINITIONS("-D_HDF5USEDLL_")
in my CMakeLists.txt file. This is used in a sub project that the
main project includes through the ADD_SUBDIRECTORY(...) command so I
_assumed_ it would get added to the parent project. This was not a
valid assumption. Adding those lines to the parent project (which
also links against HDF5.lib) was needed.
After all of the above was figured out I was finally able to compile
and run my Qt based application. I am writing all this in the hopes
that it will help some one else out in the future.
--
Mike Jackson Senior Research Engineer
Innovative Management & Technology Services
On May 31, 2007, at 9:32 PM, Won-Ki Jeong wrote:
Try add the following in CMakeLists.txt
SET( CMAKE_SHARED_LINKER_FLAGS ${CMAKE_SHARED_LINKER_FLAGS}
"/NODEFAULTLIBS:LIBCMT" )
SET( CMAKE_SHARED_LINKER_FLAGS ${CMAKE_SHARED_LINKER_FLAGS}
"/NODEFAULTLIBS:MSVCRT" )
SET( CMAKE_SHARED_LINKER_FLAGS ${CMAKE_SHARED_LINKER_FLAGS}
"/NODEFAULTLIBS:MSVCPRTD" )
On 5/31/07, Mike Jackson <[EMAIL PROTECTED]> wrote:
I am trying to compile my Qt based application by using CMake to
generate VS2003 projects. The project compiles but dies at the link
stage with lots of errors. It seems I have been down this path before
but the last solution I had does not seem to work any more.
The errors are:
LINK : warning LNK4098: defaultlib 'MSVCRTD' conflicts with use of
other libs; use /NODEFAULTLIB:library
LINK : warning LNK4098: defaultlib 'LIBCMT' conflicts with use of
other libs; use /NODEFAULTLIB:library
For this I have in my CMakeLists.txt file:
IF(WIN32)
SET(GUI_TYPE WIN32)
ADD_DEFINITIONS(-DNODEFAULTLIB:library)
SET (${QT_LIBRARIES} qtmain ${QT_LIBRARIES})
ENDIF(WIN32)
for which I thought used to work (Maybe a different verison of VS?
Could some one set me straight on this error, what to put into my
CMakeLists.txt file to get rid of it.
The Other error is:
MSVCRTD.lib(crtexew.obj) : error LNK2019: unresolved external symbol
[EMAIL PROTECTED] referenced in function _WinMainCRTStartup
which I know I have seen before, and again thought I had a solution
for but now I am not so sure. I thought the following in a
CMakeLists.txt file would work (as it did in the past).
SET (${QT_LIBRARIES} qtmain ${QT_LIBRARIES}). This does not seem to
work any more.
I would be eternally grateful if someone could shed some light on
the above.
System Info: Windows XP, VS 2003 .Net (with latest service pack),
CMake 2.4.6
I am usually a OS X/Linux guy so this is all a bit new.
Thanks
--
Mike Jackson
imikejackson _at_ gee-mail dot com
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