Determining if the Q_WS_WIN exist failed with the following output:
Change Dir: /home/michael/fbgui/build/CMakeFiles/CMakeTmp

Run Build Command:/usr/bin/make "cmTryCompileExec/fast"
/usr/bin/make -f CMakeFiles/cmTryCompileExec.dir/build.make CMakeFiles/cmTryCompileExec.dir/build
make[1]: Entering directory `/home/michael/fbgui/build/CMakeFiles/CMakeTmp'
/usr/bin/cmake -E cmake_progress_report /home/michael/fbgui/build/CMakeFiles/CMakeTmp/CMakeFiles 1
Building C object CMakeFiles/cmTryCompileExec.dir/CheckSymbolExists.c.o
/usr/bin/gcc   -I/usr/include/qt4    -o CMakeFiles/cmTryCompileExec.dir/CheckSymbolExists.c.o   -c /home/michael/fbgui/build/CMakeFiles/CMakeTmp/CheckSymbolExists.c
/home/michael/fbgui/build/CMakeFiles/CMakeTmp/CheckSymbolExists.c: In function ‘main’:
/home/michael/fbgui/build/CMakeFiles/CMakeTmp/CheckSymbolExists.c:8:25: error: ‘Q_WS_WIN’ undeclared (first use in this function)
/home/michael/fbgui/build/CMakeFiles/CMakeTmp/CheckSymbolExists.c:8:25: note: each undeclared identifier is reported only once for each function it appears in
make[1]: *** [CMakeFiles/cmTryCompileExec.dir/CheckSymbolExists.c.o] Error 1
make[1]: Leaving directory `/home/michael/fbgui/build/CMakeFiles/CMakeTmp'
make: *** [cmTryCompileExec/fast] Error 2

File /home/michael/fbgui/build/CMakeFiles/CMakeTmp/CheckSymbolExists.c:
/* */
#include <QtCore/qglobal.h>

void cmakeRequireSymbol(int dummy,...){(void)dummy;}
int main()
{
#ifndef Q_WS_WIN
  cmakeRequireSymbol(0,&Q_WS_WIN);
#endif
  return 0;
}

Determining if the Q_WS_QWS exist failed with the following output:
Change Dir: /home/michael/fbgui/build/CMakeFiles/CMakeTmp

Run Build Command:/usr/bin/make "cmTryCompileExec/fast"
/usr/bin/make -f CMakeFiles/cmTryCompileExec.dir/build.make CMakeFiles/cmTryCompileExec.dir/build
make[1]: Entering directory `/home/michael/fbgui/build/CMakeFiles/CMakeTmp'
/usr/bin/cmake -E cmake_progress_report /home/michael/fbgui/build/CMakeFiles/CMakeTmp/CMakeFiles 1
Building C object CMakeFiles/cmTryCompileExec.dir/CheckSymbolExists.c.o
/usr/bin/gcc   -I/usr/include/qt4    -o CMakeFiles/cmTryCompileExec.dir/CheckSymbolExists.c.o   -c /home/michael/fbgui/build/CMakeFiles/CMakeTmp/CheckSymbolExists.c
/home/michael/fbgui/build/CMakeFiles/CMakeTmp/CheckSymbolExists.c: In function ‘main’:
/home/michael/fbgui/build/CMakeFiles/CMakeTmp/CheckSymbolExists.c:8:25: error: ‘Q_WS_QWS’ undeclared (first use in this function)
/home/michael/fbgui/build/CMakeFiles/CMakeTmp/CheckSymbolExists.c:8:25: note: each undeclared identifier is reported only once for each function it appears in
make[1]: *** [CMakeFiles/cmTryCompileExec.dir/CheckSymbolExists.c.o] Error 1
make[1]: Leaving directory `/home/michael/fbgui/build/CMakeFiles/CMakeTmp'
make: *** [cmTryCompileExec/fast] Error 2

File /home/michael/fbgui/build/CMakeFiles/CMakeTmp/CheckSymbolExists.c:
/* */
#include <QtCore/qglobal.h>

void cmakeRequireSymbol(int dummy,...){(void)dummy;}
int main()
{
#ifndef Q_WS_QWS
  cmakeRequireSymbol(0,&Q_WS_QWS);
#endif
  return 0;
}

Determining if the Q_WS_MAC exist failed with the following output:
Change Dir: /home/michael/fbgui/build/CMakeFiles/CMakeTmp

Run Build Command:/usr/bin/make "cmTryCompileExec/fast"
/usr/bin/make -f CMakeFiles/cmTryCompileExec.dir/build.make CMakeFiles/cmTryCompileExec.dir/build
make[1]: Entering directory `/home/michael/fbgui/build/CMakeFiles/CMakeTmp'
/usr/bin/cmake -E cmake_progress_report /home/michael/fbgui/build/CMakeFiles/CMakeTmp/CMakeFiles 1
Building C object CMakeFiles/cmTryCompileExec.dir/CheckSymbolExists.c.o
/usr/bin/gcc   -I/usr/include/qt4    -o CMakeFiles/cmTryCompileExec.dir/CheckSymbolExists.c.o   -c /home/michael/fbgui/build/CMakeFiles/CMakeTmp/CheckSymbolExists.c
/home/michael/fbgui/build/CMakeFiles/CMakeTmp/CheckSymbolExists.c: In function ‘main’:
/home/michael/fbgui/build/CMakeFiles/CMakeTmp/CheckSymbolExists.c:8:25: error: ‘Q_WS_MAC’ undeclared (first use in this function)
/home/michael/fbgui/build/CMakeFiles/CMakeTmp/CheckSymbolExists.c:8:25: note: each undeclared identifier is reported only once for each function it appears in
make[1]: *** [CMakeFiles/cmTryCompileExec.dir/CheckSymbolExists.c.o] Error 1
make[1]: Leaving directory `/home/michael/fbgui/build/CMakeFiles/CMakeTmp'
make: *** [cmTryCompileExec/fast] Error 2

File /home/michael/fbgui/build/CMakeFiles/CMakeTmp/CheckSymbolExists.c:
/* */
#include <QtCore/qglobal.h>

void cmakeRequireSymbol(int dummy,...){(void)dummy;}
int main()
{
#ifndef Q_WS_MAC
  cmakeRequireSymbol(0,&Q_WS_MAC);
#endif
  return 0;
}