C++ Can'；我不知道如何使用SDL2正确格式化Makefile。未定义引用
生成文件：C++ Can'；我不知道如何使用SDL2正确格式化Makefile。未定义引用,c++,ubuntu,makefile,sdl-2,C++,Ubuntu,Makefile,Sdl 2,生成文件： OBJS = Instantiation Exec_NAME = Test.exe CC = g++ #Compiler name COMPILER_FLAGS = -c -g -Wall -std=c++11 #Issue exists somewhere in these next 3 lines, but what, how, why :( ? INC = -I/SDLDEPS/include LIB = -L/SDLDEPS/lib LINKER_FLAGS = -lming
OBJS = Instantiation
Exec_NAME = Test.exe
CC = g++ #Compiler name
COMPILER_FLAGS = -c -g -Wall -std=c++11
#Issue exists somewhere in these next 3 lines, but what, how, why :( ?
INC = -I/SDLDEPS/include
LIB = -L/SDLDEPS/lib
LINKER_FLAGS = -lmingw32 -lSDL2main -lSDL2 #just saw this a lot, not sure what the mingw32 is.
#inclusion of $(INC) $(LIB) $(LINKER_FLAGS) not right
all: $(Exec_NAME)
$(Exec_NAME): $(OBJS).o
$(CC) -o $(Exec_NAME) $(OBJS).o
Instantiation.o: $(OBJS).cpp
$(CC) $(COMPILER_FLAGS) $(INC) $(LIB) $(LINKER_FLAGS) $(OBJS).cpp
clean:
rm -f $(Exec_NAME) $(OBJS).o
rebuild:
make clean
make
我对使用makefiles进行链接和“高级”操作相当陌生。但是几个小时 谷歌搜索我不知道为什么我总是得到： /mnt/c/users/nichorsin598/source/repos/Self/TestSDL/Window.cpp:13：未定义对
SDL\u DestroyWindow'/usr/bin/ld的引用：/mnt/c/users/nichorsin598/source/repos/Self/TestSDL/Window.cpp:14：未定义对SDL\u的引用
/usr/bin/ld:/mnt/c/users/nichorsin598/source/repos/Self/TestSDL/Window.cpp:15：对SDL\u Quit'/mnt/c/users/nichorsin598/source/repos/Self/TestSDL/Window的未定义引用。cpp:19：对SDL\u Init'的未定义引用
/usr/bin/ld:/mnt/c/users/nichorsin598/source/repos/Self/TestSDL/Window.cpp:23：对SDL\u CreateWindow'/usr/bin/ld的未定义引用：/mnt/c/users/nichorsin598/source/repos/Self/TestSDL/Window.cpp:28：对SDL\u CreateRenderer'的未定义引用
/usr/bin/ld:Instantiation.o:in functionWindow:：pollEvents（）：/mnt/c/users/nichorsin598/source/repos/Self/TestSDL/Window.cpp:38:未定义对
SDL\u PollEvent'的引用
/usr/bin/ld:Instantiation.o:in functionWindow:：Clear（）const'：/mnt/c/users/nichorsin598/source/repos/Self/TestSDL/Window.cpp:72:对
SDL\u SetRenderDrawColor'的未定义引用
/usr/bin/ld:/mnt/c/users/nichorsin598/source/repos/Self/TestSDL/Window.cpp:73：未定义对SDL\u RenderClear'/usr/bin/ld的引用：/mnt/c/users/nichorsin598/source/repos/Self/TestSDL/Window.cpp:81：未定义对SDL\u SetRenderDrawColor'的引用
/usr/bin/ld:/mnt/c/users/nichorsin598/source/repos/Self/TestSDL/Window.cpp:82：对SDL\u renderfill'/usr/bin/ld的未定义引用：/mnt/c/users/nichorsin598/source/repos/Self/TestSDL/Window.cpp:88：对SDL\u RenderPresent'的未定义引用
所有的SDL都是未定义的，但是我没有得到一个错误，说SDL.h是未定义的，所以它要么与库有关，要么与其他有关
文件路径是：
TestSDL-基本目录
TestSDL\SDLDeps-包括两个文件夹include和lib
包括-包括所有.h文件
库-包括SDL2.dll、SDL2、SDL2Main、SDL2test
如果有人能帮忙，我将不胜感激。对于不同的组件，有许多不同的SDL2
库。我使用以下方式获取编译和链接器标志：
SDL2_INCS := $(shell pkg-config sdl2 --cflags) \
$(shell pkg-config SDL2_image --cflags) \
$(shell pkg-config SDL2_ttf --cflags) \
$(shell pkg-config SDL2_net --cflags) \
$(shell pkg-config SDL2_mixer --cflags)
SDL2_LIBS := $(shell pkg-config sdl2 --libs) \
$(shell pkg-config SDL2_image --libs) \
$(shell pkg-config SDL2_ttf --libs) \
$(shell pkg-config SDL2_net --libs) \
$(shell pkg-config SDL2_mixer --libs)
Instantiation.o: $(OBJS).cpp
$(CC) $(COMPILER_FLAGS) $(SDL2_INCS) -o Instantiation.o $(SDL2_LIBS) $(OBJS).cpp
您应该能够向单个pkg config
调用传递多个lib。
//Window.h I don't think Window.cpp is necessary as the issue is linking, I think.
#ifndef WINDOW_H
#define WINDOW_H
#include <string>
#include "SDLDeps/include/SDL.h"
//#include "SDL.h"
#include <iostream>
class Window {
private:
std::string title;
int width, height;
bool closed;
bool init();
SDL_Window* window;
SDL_Renderer* renderer;
public:
Window(const std::string&, int = 800, int = 600);
~Window();
void pollEvents();
void Clear() const;
inline bool isClosed() { return closed; }
};
#endif // !WINDOW_H
// Instantiation.cpp- just a file that includes files that I am compiling:
#include "Window.cpp"
#include "Main.cpp"
SDL2_INCS := $(shell pkg-config sdl2 --cflags) \
$(shell pkg-config SDL2_image --cflags) \
$(shell pkg-config SDL2_ttf --cflags) \
$(shell pkg-config SDL2_net --cflags) \
$(shell pkg-config SDL2_mixer --cflags)
SDL2_LIBS := $(shell pkg-config sdl2 --libs) \
$(shell pkg-config SDL2_image --libs) \
$(shell pkg-config SDL2_ttf --libs) \
$(shell pkg-config SDL2_net --libs) \
$(shell pkg-config SDL2_mixer --libs)
Instantiation.o: $(OBJS).cpp
$(CC) $(COMPILER_FLAGS) $(SDL2_INCS) -o Instantiation.o $(SDL2_LIBS) $(OBJS).cpp