我有以下Makefile:
CC=g++
CFLAGS=-c -pedantic -std=c++11 -lglfw -lGL -lGLU -lX11 -lXxf86vm -lXrandr -lpthread -lXi
all: Set GLDrawableGraph Edge Graph Play main
Set: Set.cpp Set.h
$(CC) $(CFLAGS) -o Set Set.cpp
GLDrawableGraph: GLDrawableGraph.cpp GLDrawableGraph.h Edge.h Graph.h
$(CC) $(CFLAGS) -o GLDrawableGraph GLDrawableGraph.cpp
Edge: Edge.cpp Edge.h
$(CC) $(CFLAGS) -o Edge Edge.cpp
Graph: Graph.cpp GLDrawableGraph.h Edge.h Graph.h Play.h
$(CC) $(CFLAGS) -o Graph Graph.cpp
Play: Play.cpp GLDrawableGraph.h Edge.h Graph.h Play.h
$(CC) $(CFLAGS) -o Play Play.cpp
main: main.cpp GLDrawableGraph.o Edge.o Graph.o Play.o GLDrawableGraph.h Edge.h Graph.h Play.h Set.o Set.h
$(CC) $(CFLAGS) -o main main.cpp GLDrawableGraph.cpp Edge.cpp Graph.cpp Play.cpp Set.cpp
我得到以下输出:
GLDrawableGraph.cpp:95:10: error: ‘p’ does not name a type
auto p=nodes.find(nodenumber);
^
GLDrawableGraph.cpp:96:8: error: ‘p’ was not declared in this scope
if(p==nodes.end()) throw std::string("Tried to color nonexistant vertex");
^
GLDrawableGraph.cpp:97:5: error: ‘p’ was not declared in this scope
p->second.color=col;
^
GLDrawableGraph.cpp: In member function ‘void DrawableGraph::DrawGraph(GLFWwindow*) const’:
GLDrawableGraph.cpp:140:15: error: ISO C++ forbids declaration of ‘e’ with no type [-fpermissive]
for(auto &e : edges) {
^
GLDrawableGraph.cpp:140:19: error: range-based ‘for’ loops are not allowed in C++98 mode
for(auto &e : edges) {
^
GLDrawableGraph.cpp:141:18: error: request for member ‘first’ in ‘e’, which is of non-class type ‘int’
int i1=e.first.first;
^
GLDrawableGraph.cpp:142:18: error: request for member ‘first’ in ‘e’, which is of non-class type ‘int’
int i2=e.first.second;
^
GLDrawableGraph.cpp:151:28: error: request for member ‘second’ in ‘e’, which is of non-class type ‘int’
RGB rgb=RGBColor(e.second.color);
^
GLDrawableGraph.cpp:158:15: error: ISO C++ forbids declaration of ‘p’ with no type [-fpermissive]
for(auto &p : nodes) {
^
GLDrawableGraph.cpp:158:19: error: range-based ‘for’ loops are not allowed in C++98 mode
for(auto &p : nodes) {
^
GLDrawableGraph.cpp:159:26: error: request for member ‘second’ in ‘p’, which is of non-class type ‘int’
float xx=float(p.second.x-R.l)/(R.r-R.l)*1.8-0.9;
^
GLDrawableGraph.cpp:160:26: error: request for member ‘second’ in ‘p’, which is of non-class type ‘int’
float yy=float(p.second.y-R.b)/(R.t-R.b)*1.8-0.9;
我认为这些错误来自C ++ 11与常规C ++的差异,但我已经给出了-std = c ++ 11选项,但它仍然不起作用。
答案 0 :(得分:2)
您的makefile依赖项不正确。会发生的是它使用内置规则编译项目,因此您的标志不适用,编译器无法识别C ++ 11 auto
关键字。尝试使用make -r
进行编译以禁用内置规则并查看会发生什么。
你可能想要这样的东西:
CXX := g++
CPPLAGS := -Wall -Wextra
CXXFLAGS := -std=c++11
LDLIBS := -lglfw -lGL -lGLU -lX11 -lXxf86vm -lXrandr -lpthread -lXi
all : main
main : main.o GLDrawableGraph.o Edge.o Graph.o Play.o Set.o
${CXX} -o $@ $^ ${LDLIBS}
%.o : %.cpp # also auto-generates dependencies
${CXX} -c -o $@ ${CPPLAGS} ${CXXFLAGS} -MD -MP -MF ${@:.o=.d} $<
-include $(wildcard *.d) # include auto-generated dependencies