SDL_ttf找不到“SDL.h”，但main.cpp可以

问题描述

我正在编写一个make文件来编译一个非常简单的SDL2程序。

到目前为止，它编译SDL2很好，现在我正在编译扩展框架SDL2_image和SDL_ttf。

看来，MAKE正确地找到了SDL_ttf.h，但是后来SDL_ttf.h找不到SDL2 / SDL.h。

以下是错误：

  cpp：3：
 /Library/Frameworks/SDL2_ttf.framework/Headers/SDL_ttf.h:30:10：致命错误：
'SDL2 / SDL.h'文件未找到
 #include < SDL2 / SDL.h> 
 ^ 
生成了1个错误。 
 make：*** [main.o]错误1 
  

SDL2像这样：

  #include< SDL2 / SDL.h> 
  

我甚至无法编译一个基本程序（SDL2没有扩展名）。我将其改为：

  #includeSDL.h
  
 
 
 
（我也听说后一种语法对于可移植性更正确。）
 
 
 
任何想法？
 
 
 
我在OS X Mavericks上这样做
 
 
 
这里是我的文件：
 main.cpp 
  #include< iostream> 
 #includeSDL.h
 #includeSDL_ttf.h
 #includeSDL_image.h
 
 int main（int argc，char * arg []）
 {
 if（SDL_Init（SDL_INIT_EVERYTHING）！= 0）
 {
 std :: cout< ERROR<< std :: endl; 
 
 return -1; 
} 
 
 SDL_Window * window = SDL_CreateWindow（Name，SDL_WINDOWPOS_CENTERED，
 SDL_WINDOWPOS_CENTERED，
 640，
 480，
 SDL_WINDOW_OPENGL）; 
 if（TTF_Init（）== -1）
 {
 sdl :: cout< SDL_ttf failed< std :: endl; 
} 
 
 SDL_Surface * tempSurface = IMG_Load（test.png）; 
 
 if（tempSurface == nullptr）
 {
 std :: cout< failed to load test.png<< std :: endl; 
} 
 
 SDL_FreeSurface（tempSurface）; 
 
 SDL_Delay（5999）; 
 
 SDL_DestroyWindow（window）; 
 
 SDL_Quit（）; 
 
 return 0; 
  
} 
 
 
 
 makefile 
  CXX = clang ++ 
 SDL = -framework SDL2 -framework SDL2_ttf -framework SDL2_image 
 
 CXXFLAGS = -Wall -c -std = c ++ 11 -I /Library/Frameworks/SDL2.framework/Headers -I /Library/Frameworks/SDL2_ttf.framework/Headers -I /Library/Frameworks/SDL2_image.framework/Header 
 
 LDFLAGS = $（SDL）-F / Library / Frameworks 
 EXE = test 
 
 all：$（EXE）
 
 $（EXE）：main .o 
 $（CXX）$（LDFLAGS）$& -o $ @ 
 main.o：main.cpp 
 $（CXX）$（CXXFLAGS）$& -o $ @ 
 
 clean：
 rm * .o&& rm $（EXE）
  
编辑：
 
 
 
我已根据DMG文件中的说明将SDL2和SDL2_ttf安装到/ Library / Frameworks文件夹中。
解决方案
通过DMG的SDL2库，这是正确的方式使它们可用于Xcode。
 
 
 
但是，我想使用g ++和编译通过MAKE导致的问题详细如上。
 
 
 
答案是安装SDL2和扩展库UNIX风格，详情如下：
  
 
 
 
使用include这样的语句：
  #includeSDL.h
 #includeSDL_ttf.h
 #includeSDL_image.h
  
我的makefile现在看起来像这样（注意使用sdl2 -config和TTF和图像库如何链接）：
  CXX = clang ++ 
 SDL =`sdl2-config  - -libs` 
 
 CXXFLAGS = -Wall -c -std = c ++ 11`sdl2-config --cflags` 
 LDFLAGS = $（SDL）-lSDL2_ttf -lSDL2_image 
 EXE = test 
 
 all：$（EXE）
 
 $（EXE）：main.o 
 $（CXX）$（LDFLAGS） -o $ @ 
 main.o：main.cpp 
 $（CXX）$（CXXFLAGS）$& -o $ @ 
  
 
I am writing a make file to compile a very simple SDL2 program. 
So far it compiles SDL2 just fine, and now I am working on compiling the extension frameworks SDL2_image and SDL_ttf.
It seems that MAKE is finding the SDL_ttf.h properly, but then SDL_ttf.h cant find "SDL2/SDL.h". 
Here is the error:
In file included from main.cpp:3:
/Library/Frameworks/SDL2_ttf.framework/Headers/SDL_ttf.h:30:10: fatal error:
  'SDL2/SDL.h' file not found
#include <SDL2/SDL.h>
         ^
1 error generated.
make: *** [main.o] Error 1
Note, when I included SDL2 like this:
#include <SDL2/SDL.h>
I could not compile even a basic program (SDL2 with no extensions). I got it to work by changing it to this:
#include "SDL.h"
(I also heard the latter syntax is more correct for portability?)
Any ideas?
I am doing this on OS X Mavericks
Here are my files:main.cpp
#include <iostream>
#include "SDL.h"
#include "SDL_ttf.h"
#include "SDL_image.h"

int main(int argc, char * arg[])
{
    if(SDL_Init(SDL_INIT_EVERYTHING) != 0)
    {
         std::cout << "ERROR" <<std::endl;

        return -1;
    }

    SDL_Window * window = SDL_CreateWindow("Name", SDL_WINDOWPOS_CENTERED,
    SDL_WINDOWPOS_CENTERED,
    640,
    480,
    SDL_WINDOW_OPENGL);
     if (TTF_Init() == -1)
     {
     sdl::cout << "SDL_ttf failed" << std::endl;
     }

    SDL_Surface* tempSurface = IMG_Load("test.png");

    if (tempSurface == nullptr)
    {
    std::cout << "failed to load test.png" << std::endl;
    }

    SDL_FreeSurface(tempSurface);

    SDL_Delay(5999);

    SDL_DestroyWindow(window);

    SDL_Quit();

    return 0;
}
makefile
CXX = clang++
SDL = -framework SDL2 -framework SDL2_ttf -framework SDL2_image

CXXFLAGS = -Wall -c -std=c++11 -I /Library/Frameworks/SDL2.framework/Headers -I       /Library/Frameworks/SDL2_ttf.framework/Headers -I    /Library/Frameworks/SDL2_image.framework/Header

LDFLAGS = $(SDL) -F /Library/Frameworks
EXE = test

all: $(EXE)

$(EXE): main.o
$(CXX) $(LDFLAGS) $< -o $@
main.o: main.cpp
$(CXX) $(CXXFLAGS) $< -o $@

clean:
    rm *.o && rm $(EXE)
Edit:
I have SDL2 and SDL2_ttf installed into the /Library/Frameworks folder per the instructions in the DMG files.
 解决方案 
I had installed the SDL2 libraries via DMG, which is the correct way to make them available to Xcode.
However, I want to use g++ and compile via MAKE which led to the problems I detailed above.
The answer is to install SDL2 and the extension libraries UNIX style as detailed herehttp://www.ginkgobitter.org/sdl/?FAQMacOSX
I was then able to use include statements like this: 
#include "SDL.h"
#include "SDL_ttf.h"
#include "SDL_image.h"
My makefile now looks like this (note use of sdl2-config and how TTF and image libraries are linked):
CXX = clang++
SDL = `sdl2-config --libs`

CXXFLAGS = -Wall -c -std=c++11 `sdl2-config --cflags`
LDFLAGS = $(SDL) -lSDL2_ttf -lSDL2_image
EXE = test

all: $(EXE)

$(EXE): main.o
    $(CXX) $(LDFLAGS) $< -o $@
main.o: main.cpp
    $(CXX) $(CXXFLAGS) $< -o $@
                        
这篇关于SDL_ttf找不到“SDL.h”，但main.cpp可以的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！