执行第一个程序的时候出现问题。make的时候！

[root@localhost first]# make
Makefile:125: warning: overriding commands for target `moc_first.cpp'
Makefile:122: warning: ignoring old commands for target `moc_first.cpp'
g++ -c -pipe -DQWS -fno-exceptions -fno-rtti -Wall -W -O2 -DNO_DEBUG -I/opt/EmbedSky/Qte/x86-qtopia-2.2.0/qt2/include -I/opt/EmbedSky/Qte/x86-qtopia-2.2.0/qtopia/include -o first.o first.cpp
g++ -c -pipe -DQWS -fno-exceptions -fno-rtti -Wall -W -O2 -DNO_DEBUG -I/opt/EmbedSky/Qte/x86-qtopia-2.2.0/qt2/include -I/opt/EmbedSky/Qte/x86-qtopia-2.2.0/qtopia/include -o main.o main.cpp
g++ -c -pipe -DQWS -fno-exceptions -fno-rtti -Wall -W -O2 -DNO_DEBUG -I/opt/EmbedSky/Qte/x86-qtopia-2.2.0/qt2/include -I/opt/EmbedSky/Qte/x86-qtopia-2.2.0/qtopia/include -o moc_first.o moc_first.cpp
g++  -o /opt/EmbedSky/Qte/x86-qtopia-2.2.0/qtopia/image/opt/Qtopia/bin/first first.o main.o first.o moc_first.o moc_first.o  -L/opt/EmbedSky/Qte/x86-qtopia-2.2.0/qtopia/lib -L/opt/EmbedSky/Qte/x86-qtopia-2.2.0/qt2/lib -lqpe -lqtopia -lqte
first.o(.text+0x0): In function `first::first[not-in-charge](QWidget*, char const*, unsigned)':
: multiple definition of `first::first[not-in-charge](QWidget*, char const*, unsigned)'
first.o(.text+0x0): first defined here
first.o(.text+0x300): In function `first::first[in-charge](QWidget*, char const*, unsigned)':
: multiple definition of `first::first[in-charge](QWidget*, char const*, unsigned)'
first.o(.text+0x300): first defined here
first.o(.text+0x600): In function `first::~first [not-in-charge]()':
: multiple definition of `first::~first [not-in-charge]()'
first.o(.text+0x600): first defined here
first.o(.text+0x624): In function `first::~first [in-charge]()':
: multiple definition of `first::~first [in-charge]()'
first.o(.text+0x624): first defined here
first.o(.text+0x648): In function `first::~first [in-charge deleting]()':
: multiple definition of `first::~first [in-charge deleting]()'
first.o(.text+0x648): first defined here
first.o(.text+0x674): In function `first::user_button()':
: multiple definition of `first::user_button()'
first.o(.text+0x674): first defined here
moc_first.o(.text+0x0): In function `first::className() const':
: multiple definition of `first::className() const'
moc_first.o(.text+0x0): first defined here
moc_first.o(.data+0x0): multiple definition of `first::metaObj'
moc_first.o(.data+0x0): first defined here
moc_first.o(.text+0xc): In function `first::initMetaObject()':
: multiple definition of `first::initMetaObject()'
moc_first.o(.text+0xc): first defined here
moc_first.o(.text+0xcc): In function `first::staticMetaObject()':
: multiple definition of `first::staticMetaObject()'
moc_first.o(.text+0xcc): first defined here
moc_first.o(.text+0x74): In function `first::tr(char const*)':
: multiple definition of `first::tr(char const*)'
moc_first.o(.text+0x74): first defined here
moc_first.o(.text+0xa0): In function `first::tr(char const*, char const*)':
: multiple definition of `first::tr(char const*, char const*)'
moc_first.o(.text+0xa0): first defined here
collect2: ld returned 1 exit status
make: *** [/opt/EmbedSky/Qte/x86-qtopia-2.2.0/qtopia/image/opt/Qtopia/bin/first] Error 1

Makefile文件中有重复的信息。