Linux '"SDL.h" 没有找到这样的文件或目录' 编译时
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'"SDL.h" no such file or directory found' when compiling
提问by argoneus
Here's a piece of my current Makefile:
这是我当前的 Makefile 的一部分：
CFLAGS = -O2 -Wall -pedantic -std=gnu++11 `sdl-config --cflags --libs` -lSDL_mixer
I have libsdl installed properly, SDL.h is in /usr/include/sdl where it belongs, but it just won't compile. I also have the line #include "SDL.h"in my .h files, but still no go.
我已经正确安装了 libsdl，SDL.h 在它所属的 /usr/include/sdl 中，但它无法编译。#include "SDL.h"我的 .h 文件中也有该行，但仍然没有通过。
Anyone knows why?
有谁知道为什么？
采纳答案by larsks
If the header file is /usr/include/sdl/SDL.hand your code has:
如果头文件是/usr/include/sdl/SDL.h并且您的代码具有：
#include "SDL.h"
You need to either fix your code:
您需要修复您的代码：
#include "sdl/SDL.h"
Or tell the preprocessor where to find include files:
或者告诉预处理器在哪里可以找到包含文件：
CFLAGS = ... -I/usr/include/sdl ...
回答by bardes
Most times SDL is in /usr/include/SDL. If so then your #include <SDL.h>directive is wrong, it should be #include <SDL/SDL.h>.
大多数情况下，SDL 在/usr/include/SDL. 如果是这样，那么您的#include <SDL.h>指令是错误的，应该是#include <SDL/SDL.h>.
An alternative for that is adding the /usr/include/SDLdirectory to your include directories. To do that you should add -I/usr/include/SDLto the compiler flags...
另一种方法是将/usr/include/SDL目录添加到包含目录中。为此，您应该添加-I/usr/include/SDL到编译器标志...
If you are using an IDE this should be quite easy too...
如果您使用的是 IDE，这也应该很容易...
回答by Scott Stensland
The header file lives at
头文件位于
/usr/include/SDL/SDL.h
in your c++ code pull in this header using
在您的 C++ 代码中，使用
#include <SDL.h>
you have the correct usage of
你有正确的用法
sdl-config --cflags --libs
which will give you
这会给你
-I/usr/include/SDL -D_GNU_SOURCE=1 -D_REENTRANT
-L/usr/lib/x86_64-linux-gnu -lSDL
at time you may also see this usage which works for a standard install
有时您可能还会看到此用法适用于标准安装
pkg-config --cflags --libs sdl
which supplies you with
它为您提供
-D_GNU_SOURCE=1 -D_REENTRANT -I/usr/include/SDL -lSDL
回答by StackAttack
For Simple Direct Media Layer 2(SDL2), after installing it on Ubuntu 16.04 via:
对于简单直接媒体层 2(SDL2)，在 Ubuntu 16.04 上通过以下方式安装后：
sudo apt-get install libsdl2-dev
I used the header:
我使用了标题：
#include <SDL2/SDL.h>
and the compiler linker command:
和编译器链接器命令：
-lSDL2main -lSDL2
Additionally, you may also want to install:
此外，您可能还想安装：
apt-get install libsdl2-image-dev
apt-get install libsdl2-mixer-dev
apt-get install libsdl2-ttf-dev
With these headers:
使用这些标题：
#include <SDL2/SDL_image.h>
#include <SDL2/SDL_ttf.h>
#include <SDL2/SDL_mixer.h>
and the compiler linker commands:
和编译器链接器命令：
-lSDL2_image
-lSDL2_ttf
-lSDL2_mixer
回答by Qohelet
Having a similar case and I couldn't use StackAttacks solution as he's referring to SDL2 which is for the legacy code I'm using too new.
有一个类似的情况，我不能使用StackAttack的解决方案，因为他指的是 SDL2，它用于我使用的太新的遗留代码。
Fortunately our friends from askUbuntuhad something similar:
幸运的是，我们来自askUbuntu的朋友有类似的东西：
tar xvf SDL-1.2.tar.gz
cd SDL-1.2
./configure
make
sudo make install
回答by Mayank Sharma
the simplest idea is to add pkg-config --cflags --libs sdl2 while compiling the code.
最简单的想法是在编译代码时添加 pkg-config --cflags --libs sdl2 。
g++ file.cpp `pkg-config --cflags --libs sdl2`
g++ file.cpp `pkg-config --cflags --libs sdl2`
