运行：
[zzh@zhaozhonghai trackRT]$ make
g++ -c -pipe -O2 -Wall -W -D_REENTRANT -DQT_NO_DEBUG -DQT_GUI_LIB -DQT_NETWORK_LIB -DQT_CORE_LIB -DQT_SHARED \
-I/usr/local/Trolltech/Qt-4.8.5/include/mkspecs/Linux-g++ -I/usr/local/Trolltech/Qt-4.8.5/include/QtCore -I/usr/local/Trolltech/Qt-4.8.5/include/QtNetwork -I/usr/local/Trolltech/Qt-4.8.5/include -c trackRTCommB.cpp
trackRTCommB.cpp: In function ‘int main(int, char**)’:
trackRTCommB.cpp:127:15: error: ‘sleep’ was not declared in this scope
sleep(1);
^
trackRTCommB.cpp:170:17: error: ‘sleep’ was not declared in this scope
sleep(1);
^
trackRTCommB.cpp: In function ‘void trt_comline(int, char**, int*, char*, char*, char*, char*, int*, char*)’:
trackRTCommB.cpp:312:28: warning: converting to non-pointer type ‘char’ from NULL [-Wconversion-null]
prcsite[indx] = NULL ; // Null terminate the list
^
make: *** [trackRTB] Error 1
[zzh@zhaozhonghai trackRT]$
[zzh@zhaozhonghai trackRT]$ make
g++ -c -pipe -O2 -Wall -W -D_REENTRANT -DQT_NO_DEBUG -DQT_GUI_LIB -DQT_NETWORK_LIB -DQT_CORE_LIB -DQT_SHARED \
-I/usr/local/Trolltech/Qt-4.8.5/include/mkspecs/linux-g++ -I/usr/local/Trolltech/Qt-4.8.5/include/QtCore -I/usr/local/Trolltech/Qt-4.8.5/include/QtNetwork -I/usr/local/Trolltech/Qt-4.8.5/include -c trackRTCommB.cpp
trackRTCommB.cpp: In function ‘void trt_comline(int, char**, int*, char*, char*, char*, char*, int*, char*)’:
trackRTCommB.cpp:314:28: warning: converting to non-pointer type ‘char’ from NULL [-Wconversion-null]
prcsite[indx] = NULL ; // Null terminate the list
^
gfortran -O3 -Wuninitialized -fno-f2c -ffast-math -fno-automatic -fno-backslash trackRTCommB.o -L/usr/local/lib -L/usr/local/Trolltech/Qt-4.8.5/lib -lQtNetwork -lQtCore -lpthread -lstdc++ ./trackRT_lib.a ../gen_util/gen_util_lib.a ../../libraries/matrix/kinv_lib.a ../../libraries/comlib/com_lib.a -o trackRTB
rm -f trackRTCommB.o
g++ -c -pipe -O2 -Wall -W -D_REENTRANT -DQT_NO_DEBUG -DQT_GUI_LIB -DQT_NETWORK_LIB -DQT_CORE_LIB -DQT_SHARED \
-I/usr/local/Trolltech/Qt-4.8.5/include/mkspecs/linux-g++ -I/usr/local/Trolltech/Qt-4.8.5/include/QtCore -I/usr/local/Trolltech/Qt-4.8.5/include/QtNetwork -I/usr/local/Trolltech/Qt-4.8.5/include -c test_trackRT.cpp
gfortran -O3 -Wuninitialized -fno-f2c -ffast-math -fno-automatic -fno-backslash test_trackRT.o -L/usr/local/lib -L/usr/local/Trolltech/Qt-4.8.5/lib -lQtNetwork -lQtCore -lpthread -lstdc++ ./trackRT_lib.a ../gen_util/gen_util_lib.a ../../libraries/matrix/kinv_lib.a ../../libraries/comlib/com_lib.a -o test_trackRT
rm -f test_trackRT.o
[zzh@zhaozhonghai trackRT]$
出现错误：找不到sleep(1);函数，在这个CPP源文件中加入了：
#include <unistd.h>
得到解决。