关于C#：将GTK与CMake一起使用时的’未定义引用’

'undefined reference to' when using GTK with CMake

我正在尝试使用CMake构建基本的GTK代码(其教程之一)，但是我一直在获得"对*的未定义引用"，其中*是代码中的任何GTK函数。我试图照看相关的指南/教程，但大多数都与我所拥有的相似。

使用命令：

，可以从终端进行常规编译而不会出现问题

1	g++ ./test.cpp -o test `pkg-config --cflags --libs gtk+-3.0`

当我尝试使用CMake时，我的CMakeLists.txt是：

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cmake_minimum_required(VERSION 3.0.2)
project(gtktest)

find_package(PkgConfig REQUIRED)
pkg_check_modules(GTK3 REQUIRED gtk+-3.0)

include_directories(${GTK3_INCLUDE_DIRS})
link_directories(${GTK3_LIBRARY_DIRS})
add_definitions(${GTK3_CFLAGS_OTHER})

add_executable(gtktest test.cpp)
target_link_libraries(gtktest ${GKT3_LIBRARIES})

现在cmake .似乎可以正常工作

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cmake .
-- The C compiler identification is GNU 7.4.0
-- The CXX compiler identification is GNU 7.4.0
-- 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
-- Detecting C compile features
-- Detecting C compile features - 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
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Found PkgConfig: /usr/bin/pkg-config (found version"0.29.1")
-- Checking for module 'gtk+-3.0'
-- Found gtk+-3.0, version 3.22.30
-- Configuring done
-- Generating done
-- Build files have been written to: /home/dfdark/Desktop/gtk test

但是之后出现命令是问题：

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make
Scanning dependencies of target gtktest
[ 50%] Building CXX object CMakeFiles/gtktest.dir/test.cpp.o
[100%] Linking CXX executable gtktest
CMakeFiles/gtktest.dir/test.cpp.o: In function `activate(_GtkApplication*, void*)':
test.cpp:(.text+0x27): undefined reference to `gtk_application_window_new'
test.cpp:(.text+0x30): undefined reference to `gtk_window_get_type'
test.cpp:(.text+0x42): undefined reference to `g_type_check_instance_cast'
test.cpp:(.text+0x51): undefined reference to `gtk_window_set_title'
test.cpp:(.text+0x56): undefined reference to `gtk_window_get_type'
test.cpp:(.text+0x68): undefined reference to `g_type_check_instance_cast'
test.cpp:(.text+0x7a): undefined reference to `gtk_window_set_default_size'
test.cpp:(.text+0x86): undefined reference to `gtk_widget_show_all'
CMakeFiles/gtktest.dir/test.cpp.o: In function `main':
test.cpp:(.text+0xcc): undefined reference to `gtk_application_new'
test.cpp:(.text+0xfb): undefined reference to `g_signal_connect_data'
test.cpp:(.text+0x100): undefined reference to `g_application_get_type'
test.cpp:(.text+0x112): undefined reference to `g_type_check_instance_cast'
test.cpp:(.text+0x126): undefined reference to `g_application_run'
test.cpp:(.text+0x135): undefined reference to `g_object_unref'
collect2: error: ld returned 1 exit status
CMakeFiles/gtktest.dir/build.make:94: recipe for target 'gtktest' failed
make[2]: *** [gtktest] Error 1
CMakeFiles/Makefile2:67: recipe for target 'CMakeFiles/gtktest.dir/all' failed
make[1]: *** [CMakeFiles/gtktest.dir/all] Error 2
Makefile:83: recipe for target 'all' failed
make: *** [all] Error 2

test.cpp代码(来自GTK教程)

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#include <gtk/gtk.h>

static void
activate (GtkApplication* app,
gpointer user_data)
{
GtkWidget *window;

window = gtk_application_window_new (app);
gtk_window_set_title (GTK_WINDOW (window),"Window");
gtk_window_set_default_size (GTK_WINDOW (window), 200, 200);
gtk_widget_show_all (window);
}

int
main (int argc,
char **argv)
{
GtkApplication *app;
int status;

app = gtk_application_new ("org.gtk.example", G_APPLICATION_FLAGS_NONE);
g_signal_connect (app,"activate", G_CALLBACK (activate), NULL);
status = g_application_run (G_APPLICATION (app), argc, argv);
g_object_unref (app);

return status;
}

问题是否弄乱了CMake命令的顺序？