[Development] cmake for Qt

[pengliang(彭亮)]

Hello

This is my first to compile qt project use cmake.

I written CmakeLists.txt:

PROJECT(test)

CMAKE_MINIMUM_REQUIRED(VERSION 2.8)

FIND_PACKAGE(Qt4 REQUIRED)

INCLUDE(${QT_USE_FILE})

ADD_DEFINITIONS(${QT_DEFINITIONS})

SET(test_HEADERS widget.h comparefilethread.h)

SET(test_SOURCES main.cpp widget.cpp comparefilethread.cpp)

QT4_WRAP_CPP(test_HEADERS_MOC ${test_HEADERS})

ADD_EXECUTABLE(test ${test_HEADERS_MOC} ${test_SOURCES})

TARGET_LINK_LIBRARIES(test ${QT_LIBRARIES})

 

 

 

When I run Cmake  

Maybe everything perfect. Makefile has been created.

------------ output ------------------

-- The C compiler identification is GNU 4.1.2

-- The CXX compiler identification is GNU 4.1.2

-- Check for working C compiler: /usr/bin/cc

-- Check for working C compiler: /usr/bin/cc -- works

-- Detecting C compiler ABI info

-- Detecting C compiler ABI info - done

-- Check for working CXX compiler: /usr/bin/c++

-- Check for working CXX compiler: /usr/bin/c++ -- works

-- Detecting CXX compiler ABI info

-- Detecting CXX compiler ABI info - done

-- Looking for Q_WS_X11

-- Looking for Q_WS_X11 - found

-- Looking for Q_WS_WIN

-- Looking for Q_WS_WIN - not found

-- Looking for Q_WS_QWS

-- Looking for Q_WS_QWS - not found

-- Looking for Q_WS_MAC

-- Looking for Q_WS_MAC - not found

-- Found Qt4: /usr/local/Trolltech/Qt-4.7.1/bin/qmake (found version "4.7.1") 

-- Configuring done

-- Generating done

-- Build files have been written to: /home/incam/test/wps/build

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

 

But when I run make, some errors occurred.

 

-------------------------- CmakeError.log ---------------------------

Determining if the Q_WS_WIN exist failed with the following output:

Change Dir: /home/incam/test/wps/build/CMakeFiles/CMakeTmp

 

Run Build Command:/usr/bin/gmake "cmTryCompileExec1901404822/fast"

/usr/bin/gmake -f CMakeFiles/cmTryCompileExec1901404822.dir/build.make CMakeFiles/cmTryCompileExec1901404822.dir/build

gmake[1]: Entering directory `/home/incam/test/wps/build/CMakeFiles/CMakeTmp'

/usr/local/bin/cmake -E cmake_progress_report /home/incam/test/wps/build/CMakeFiles/CMakeTmp/CMakeFiles 1

Building CXX object CMakeFiles/cmTryCompileExec1901404822.dir/CheckSymbolExists.cxx.o

/usr/bin/c++    -I/usr/local/Trolltech/Qt-4.7.1/include    -o CMakeFiles/cmTryCompileExec1901404822.dir/CheckSymbolExists.cxx.o -c /home/incam/test/wps/build/CMakeFiles/CMakeTmp/CheckSymbolExists.cxx

/home/incam/test/wps/build/CMakeFiles/CMakeTmp/CheckSymbolExists.cxx: In function ‘int main(int, char**)’:

/home/incam/test/wps/build/CMakeFiles/CMakeTmp/CheckSymbolExists.cxx:8: 错误：‘Q_WS_WIN’ 在此作用域中尚未声明

gmake[1]: *** [CMakeFiles/cmTryCompileExec1901404822.dir/CheckSymbolExists.cxx.o] 错误 1

gmake[1]: Leaving directory `/home/incam/test/wps/build/CMakeFiles/CMakeTmp'

gmake: *** [cmTryCompileExec1901404822/fast] 错误 2

 

File /home/incam/test/wps/build/CMakeFiles/CMakeTmp/CheckSymbolExists.cxx:

/* */

#include <QtCore/qglobal.h>

 

int main(int argc, char** argv)

{

  (void)argv;

#ifndef Q_WS_WIN

  return ((int*)(&Q_WS_WIN))[argc];

#else

  (void)argc;

  return 0;

#endif

}

……………

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

 

Could anybody tell me why?

 

Thanks

Ken

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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