Eclipse 和 Gtkmm - “未定义的引用”
我使用 Eclipse,并且想在其中使用 gtkmm。我有以下代码:
#include <gtkmm.h>
#include <iostream>
int main(int argc, char *argv[]) {
Gtk::Main kit(argc, argv);
Gtk::Window mainWindow;
Gtk::Button button("Click here");
mainWindow.set_title("Eclipse/GTKmm Demo");
mainWindow.set_border_width(4);
mainWindow.set_default_size(200, 50);
mainWindow.add(button);
button.show();
Gtk::Main::run(mainWindow);
return 0;
}
我将 pkg-config --cflags --libs gtkmm-3.0
(当然带有重音符号)添加到 Cross G++ 编译器杂项选项到其他标志中,并且与 Cross G++ 相同链接器标志中的编译器杂项选项。但这不起作用!
这是编译日志:
**** Build of configuration Debug for project User Directory Changer ****
make all
Building file: ../main.cpp
Invoking: Cross G++ Compiler
g++ -O0 -g3 -Wall -c -fmessage-length=0 `pkg-config --cflags --libs gtkmm-3.0` -MMD -MP -MF"main.d" -MT"main.d" -o "main.o" "../main.cpp"
Finished building: ../main.cpp
Building target: User Directory Changer
Invoking: Cross G++ Linker
g++ `pkg-config --cflags --libs gtkmm-3.0` -o "User Directory Changer" ./main.o
./main.o: In function `main':
/home/m4tx1/Dropbox/Projects/User Directory Changer/Debug/../main.cpp:12: undefined reference to `Gtk::Main::Main(int&, char**&, bool)'
/home/m4tx1/Dropbox/Projects/User Directory Changer/Debug/../main.cpp:14: undefined reference to `Gtk::Window::Window(Gtk::WindowType)'
/home/m4tx1/Dropbox/Projects/User Directory Changer/Debug/../main.cpp:16: undefined reference to `Glib::ustring::ustring(char const*)'
/home/m4tx1/Dropbox/Projects/User Directory Changer/Debug/../main.cpp:16: undefined reference to `Gtk::Button::Button(Glib::ustring const&, bool)'
/home/m4tx1/Dropbox/Projects/User Directory Changer/Debug/../main.cpp:16: undefined reference to `Glib::ustring::~ustring()'
/home/m4tx1/Dropbox/Projects/User Directory Changer/Debug/../main.cpp:18: undefined reference to `Glib::ustring::ustring(char const*)'
[etc...]
collect2: ld returned 1 exit status
make: *** [User Directory Changer] Error 1
**** Build Finished ****
我不知道为什么......当我在终端中编译它时: g++ -O0 -g3 -Wall -c -fmessage-length=0 'pkg-config --cflags -- libs gtkmm-3.0' -o ./test ./main.cpp 它有效...
I use Eclipse and I wanted to use gtkmm in it. I have following code:
#include <gtkmm.h>
#include <iostream>
int main(int argc, char *argv[]) {
Gtk::Main kit(argc, argv);
Gtk::Window mainWindow;
Gtk::Button button("Click here");
mainWindow.set_title("Eclipse/GTKmm Demo");
mainWindow.set_border_width(4);
mainWindow.set_default_size(200, 50);
mainWindow.add(button);
button.show();
Gtk::Main::run(mainWindow);
return 0;
}
I added pkg-config --cflags --libs gtkmm-3.0
(with grave accents, of course) to Cross G++ Compiler Miscellanous options into Other flags and the same to the Cross G++ Compiler Miscellanous options into Linker flags. And it doesn't work!
Here's the compile log:
**** Build of configuration Debug for project User Directory Changer ****
make all
Building file: ../main.cpp
Invoking: Cross G++ Compiler
g++ -O0 -g3 -Wall -c -fmessage-length=0 `pkg-config --cflags --libs gtkmm-3.0` -MMD -MP -MF"main.d" -MT"main.d" -o "main.o" "../main.cpp"
Finished building: ../main.cpp
Building target: User Directory Changer
Invoking: Cross G++ Linker
g++ `pkg-config --cflags --libs gtkmm-3.0` -o "User Directory Changer" ./main.o
./main.o: In function `main':
/home/m4tx1/Dropbox/Projects/User Directory Changer/Debug/../main.cpp:12: undefined reference to `Gtk::Main::Main(int&, char**&, bool)'
/home/m4tx1/Dropbox/Projects/User Directory Changer/Debug/../main.cpp:14: undefined reference to `Gtk::Window::Window(Gtk::WindowType)'
/home/m4tx1/Dropbox/Projects/User Directory Changer/Debug/../main.cpp:16: undefined reference to `Glib::ustring::ustring(char const*)'
/home/m4tx1/Dropbox/Projects/User Directory Changer/Debug/../main.cpp:16: undefined reference to `Gtk::Button::Button(Glib::ustring const&, bool)'
/home/m4tx1/Dropbox/Projects/User Directory Changer/Debug/../main.cpp:16: undefined reference to `Glib::ustring::~ustring()'
/home/m4tx1/Dropbox/Projects/User Directory Changer/Debug/../main.cpp:18: undefined reference to `Glib::ustring::ustring(char const*)'
[etc...]
collect2: ld returned 1 exit status
make: *** [User Directory Changer] Error 1
**** Build Finished ****
And I don't know why... When I compile it in terminal by: g++ -O0 -g3 -Wall -c -fmessage-length=0 'pkg-config --cflags --libs gtkmm-3.0' -o ./test ./main.cpp
it works...
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我找到了一个解决方案:
在链接器选项中,在命令行模式中,我将
${FLAGS}
移至末尾,例如:之前:
${COMMAND} ${FLAGS} ${OUTPUT_FLAG} ${OUTPUT_PREFIX}${输出} ${INPUTS}
之后:
${COMMAND} ${OUTPUT_FLAG} ${OUTPUT_PREFIX}${OUTPUT} ${INPUTS} ${FLAGS}
现在可以了。
I found a solution:
In Linker options, in Command line pattern I moved
${FLAGS}
to the end, e.g.:Before:
${COMMAND} ${FLAGS} ${OUTPUT_FLAG} ${OUTPUT_PREFIX}${OUTPUT} ${INPUTS}
After:
${COMMAND} ${OUTPUT_FLAG} ${OUTPUT_PREFIX}${OUTPUT} ${INPUTS} ${FLAGS}
And now it works.
您必须在
pkg-config --cflags
中添加一个现在所在的位置(编译器选项),然后添加pkg-config --libs
> 链接器选项You must divide to
pkg-config --cflags <etc>
an add there where it's now (compiler options) and then addpkg-config --libs <etc>
to linker options