Question

所以我想用Qt作为我的SDL应用程序的编辑器。当我尝试在Qt中创建一个空白项目并链接库时，它无法找到SDL2 / SDL.h。这是我的.pro文件中的内容：

mac: LIBS += "-F$$PWD/../Control Libraries/" -framework SDL2
INCLUDEPATH += "$$PWD/../Control Libraries/SDL2.framework/Versions/A/Headers"


mac: LIBS += "-F$$PWD/../Control Libraries/" -framework SDL2_mixer
INCLUDEPATH += "$$PWD/../Control Libraries/SDL2_mixer.framework/Versions/A/Headers"


mac: LIBS += "-F$$PWD/../Control Libraries/" -framework SDL2_ttf
INCLUDEPATH += "$$PWD/../Control Libraries/SDL2_ttf.framework/Versions/A/Headers"

我无法找到任何已发布如何使其发挥作用的人，但我知道必须有某种方式。它只需点击一下即可在Xcode中运行，所以我只是做错了吗？感谢。

编辑：

此处发出错误消息：

    /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang++ -c -pipe -g -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.8.sdk -mmacosx-version-min=10.6 -Wall -W -fPIE -DQT_WIDGETS_LIB -DQT_GUI_LIB -DQT_CORE_LIB -I../../../Qt/5.3/clang_64/mkspecs/macx-clang -I../SpudEngineEditor -I../Control\ Libraries/SDL2.framework/Headers -I../Control\ Libraries/SDL2_mixer.framework/Headers -I../Control\ Libraries/SDL2_ttf.framework/Headers -I../../../Qt/5.3/clang_64/lib/QtWidgets.framework/Versions/5/Headers -I../../../Qt/5.3/clang_64/lib/QtGui.framework/Versions/5/Headers -I../../../Qt/5.3/clang_64/lib/QtCore.framework/Versions/5/Headers -I. -I/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.8.sdk/System/Library/Frameworks/OpenGL.framework/Versions/A/Headers -I/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.8.sdk/System/Library/Frameworks/AGL.framework/Headers -I. -I. -F/Users/Logan/Qt/5.3/clang_64/lib -o Camera.o ../SpudEngineEditor/Camera.cpp
In file included from ../SpudEngineEditor/Camera.cpp:9:
In file included from ../SpudEngineEditor/Camera.h:13:
../SpudEngineEditor/CoreEngine.h:14:9: warning: unknown pragma ignored [-Wunknown-pragmas]
#pragma comment (lib, "glu32.lib")
        ^
In file included from ../SpudEngineEditor/Camera.cpp:9:
In file included from ../SpudEngineEditor/Camera.h:13:
In file included from ../SpudEngineEditor/CoreEngine.h:34:
../Control Libraries/SDL2_ttf.framework/Headers/SDL_ttf.h:30:10: fatal error: 'SDL2/SDL.h' file not found
#include <SDL2/SDL.h>

编辑：我已经得到它所以我可以包括但不是，这是一个问题，因为SDL混音器和SDL rtf都使用

Answer 1

当路径中包含空格时，您应该使用双引号，例如：

INCLUDEPATH += "$$PWD/../Control Libraries/SDL2.framework/Versions/A/Headers"

除非你确实希望它们是单独的参数，例如：

mac: LIBS += "-F$$PWD/../Control Libraries/" -framework SDL2_mixer

问题编辑后：您有#include <SDL2/SDl.h>。它似乎有错误的情况，应该是

#include <SDL2/SDL.h>

Answer 2

编译器清楚错误：

../ SpudEngineEditor / main.cpp:3:10：致命错误：＆＃39; SDL2 / SDl.h＆＃39;找不到文件

你应该做的是替换这一行：

#include <SDL2/SDl.h>

使用：

#include <SDL2/SDL.h>
//               ^, yes uppercase.

此外，对于具有空格的路径，您应该使用为此目的而建立的the corresponding quote qmake function，这也适用于内部的双引号。在所有情况下，双引号也可能有效，但如果有一个已建立，我个人更喜欢花哨的功能。： - ）

如果我不重复相同的路径，我也会建立一个辅助变量。

此外，我会编写一个qmake函数，虽然内联调用不需要使用真正的qmake函数，for循环，因为你重复同样的事情。因此，我会写这样的东西：

setSDLPaths() {
    CONTROL_LIBRARIES_PATH = $$quote($$PWD/../Control Libraries/)
    LIST = SDL2 SDL2_ttf SDL2_mixer
    for(item, LIST) {
        mac: LIBS += -F$$CONTROL_LIBRARIES_PATH -framework $$item
        INCLUDEPATH += $$CONTROL_LIBRARIES_PATH/$${item}.framework/Versions/A/Headers
    }
}

然后会大大简化您的代码，基本上是单行代码：

$$setSDLPaths()

在QtCreator中链接SDL2

2 个答案: