如何使用 GTK+ 设置 CMakeLists

How to set up CMakeLists with GTK+?

本文关键字：CMakeLists 设置 GTK+ 何使用      更新时间：2023-10-16

我像这样设置CMakeLists：

project(physiotreapy)
set(HEDEAR_FILES Physiotreapy.h)
set(SOURCE_FILES Physiotreapy.cpp)
add_library(libphysiotreapy STATIC ${SOURCE_FILES})
target_include_directories(libphysiotreapy PUBLIC .)
add_executable(physiotreapy ${SOURCE_FILES} main.cpp)
find_package(PkgConfig REQUIRED)
pkg_check_modules(GTK3 REQUIRED gtk+-3.0)
include_directories(${GTK3_INCLUDE_DIRS})
link_directories(${GTK3_LIBRARY_DIRS})
add_definitions(${GTK3_CFLAGS_OTHER})
target_link_libraries(physiotreapy libphysiotreapy )

但是当我尝试运行此代码时：

#include <gtk/gtk.h>
int main (int argc, char *argv[]) {
    GtkWidget *okno;
    gtk_init(&argc,&argv);
    okno = gtk_window_new (GTK_WINDOW_TOPLEVEL);
    gtk_widget_show (okno);
    gtk_main ();
    return 0;
}

我收到一些错误：

/cygdrive/c/Users/Mateusz/Desktop/My project/projects/physiotreapy/main.cpp:11: undefined reference to `gtk_init_abi_check'
/cygdrive/c/Users/Mateusz/Desktop/My project/projects/physiotreapy/main.cpp:11:(.text+0x35): relocation truncated to fit: R_X86_64_PC32 against undefined symbol `gtk_init_abi_check'
/cygdrive/c/Users/Mateusz/Desktop/My project/projects/physiotreapy/main.cpp:12: undefined reference to `gtk_window_new'
/cygdrive/c/Users/Mateusz/Desktop/My project/projects/physiotreapy/main.cpp:12:(.text+0x3f): relocation truncated to fit: R_X86_64_PC32 against undefined symbol `gtk_window_new'
/cygdrive/c/Users/Mateusz/Desktop/My project/projects/physiotreapy/main.cpp:13: undefined reference to `gtk_widget_show'
/cygdrive/c/Users/Mateusz/Desktop/My project/projects/physiotreapy/main.cpp:13:(.text+0x4f): relocation truncated to fit: R_X86_64_PC32 against undefined symbol `gtk_widget_show'
/cygdrive/c/Users/Mateusz/Desktop/My project/projects/physiotreapy/main.cpp:15: undefined reference to `gtk_main'
/cygdrive/c/Users/Mateusz/Desktop/My project/projects/physiotreapy/main.cpp:15:(.text+0x54): relocation truncated to fit: R_X86_64_PC32 against undefined symbol `gtk_main'

看起来你在那里有 95%，但我想你忘了列出要链接的库。 我的 "FooBar" 项目的 CMakeList.txt 文件的相关部分包含以下内容，其中前 3 行与您的几乎相同：

FIND_PACKAGE ( PkgConfig REQUIRED )
PKG_CHECK_MODULES( GTK REQUIRED gtk+-3.0 ) # or use gtk+-2.0, etc...
INCLUDE_DIRECTORIES ( ${GTK_INCLUDE_DIRS} )
SET ( FOOBAR_LIBS ${GTK_LIBRARIES} )

请注意，我跟踪需要哪些库的第 4 行。 然后稍后在我的CMakeLists中.txt当我创建可执行文件时：

ADD_EXECUTABLE ( foobar foobar.cpp )
TARGET_LINK_LIBRARIES( foobar ${CMAKE_THREAD_LIBS_INIT} ${FOOBAR_LIBS} )

请注意 ${FOOBAR_LIBS}，在我的案例和许多现实世界的例子中，它包含许多库，而不仅仅是 GTK+ 库。 另一种流行的方法是像这样列出库：

ADD_EXECUTABLE ( foobar foobar.cpp )
TARGET_LINK_LIBRARIES( foobar ${CMAKE_THREAD_LIBS_INIT} ${GTK_LIBRARIES} )

如果你有多个包需要链接，你会把它们全部列出来，类似于这样：

ADD_EXECUTABLE ( foobar foobar.cpp )
TARGET_LINK_LIBRARIES( foobar ${CMAKE_THREAD_LIBS_INIT} ${GTK_LIBRARIES} ${POSTGRESQL_LIBRARIES} ${OPENGL_LIBRARIES} )

获取 Gtk 的两个最佳选项是：

  • MSYS2 使用 mingw。
  • 使用MSVC的gvsbuild。
相关文章：