Linux 带有相对路径的Makefile？
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Makefile with relative paths?
提问by demonking
I have a problem with my Makefiles on Gentoo Linux.
我在 Gentoo Linux 上的 Makefile 有问题。
Here is my folder hierarchy:
这是我的文件夹层次结构：
Development
-> GLTools
-> include
-> src
->Triangle
->triangle.cpp
->Makefile
and my Makefile:
和我的 Makefile：
MAIN = triangle
SRCPATH = ./
SHAREDPATH = ../GLTools/src/
SHAREDINCPATH = ../GLTools/include/
LIBDIRS = -L/usr/local/lib
INCDIRS = -I/usr/include -I/usr/local/include -I/usr/include/GL \
-I$(SHAREDINCPATH) -I$(SHAREDINCPATH)GL
CC = g++
CFLAGS = $(COMPILERFLAGS) -g $(INCDIRS)
LIBS = -lglut -lGL -lGLU -lm
prog : $(MAIN)
$(MAIN).o : $(SRCPATH)$(MAIN).cpp
glew.o : $(SHAREDPATH)glew.c
GLTools.o : $(SHAREDPATH)GLTools.cpp
GLBatch.o : $(SHAREDPATH)GLBatch.cpp
GLTriangleBatch.o : $(SHAREDPATH)GLTriangleBatch.cpp
GLShaderManager.o : $(SHAREDPATH)GLShaderManager.cpp
math3d.o : $(SHAREDPATH)math3d.cpp
$(MAIN) : $(MAIN).o glew.o
$(CC) $(CFLAGS) -o $(SRCPATH)$(MAIN) $(LIBDIRS) $(SRCPATH)$(MAIN).cpp \
$(SHAREDPATH)glew.c $(SHAREDPATH)GLTools.cpp $(SHAREDPATH)GLBatch.cpp\
$(SHAREDPATH)GLTriangleBatch.cpp $(SHAREDPATH)GLShaderManager.cpp \
$(SHAREDPATH)math3d.cpp $(LIBS)
clean:
rm -f *.o
My problem is that get the following error:
我的问题是出现以下错误：
demonking@Master ~/Development/Triangle $ make
g++ -c -o triangle.o triangle.cpp
triangle.cpp:4:50: error: GLTools.h: No such file or directory
triangle.cpp:5:56: error: GLShaderManager.h: No such file or directory
But when I copy my Makefile to the folder Development (a folder up one level) and edit my paths it compiles without any errors.
但是当我将我的 Makefile 复制到文件夹 Development （一个文件夹上一层）并编辑我的路径时，它编译时没有任何错误。
Why do I get an error when my triangle.cpp and Makefile are in one folder and I try to access GLTools in the parent folder?
当我的triangle.cpp 和Makefile 在一个文件夹中并且我尝试访问父文件夹中的GLTools 时，为什么会出现错误？
采纳答案by dmckee --- ex-moderator kitten
The default rule for compiling c++uses CXXFLAGSrather than CFLAGS, and you haven't set it so it does not include INCDIRS.
编译 c++的默认规则使用CXXFLAGS而不是CFLAGS，并且您还没有设置它所以它不包括INCDIRS.
Add
添加
CXXFLAGS = $(COMPILERFLAGS) -g $(INCDIRS)
and try again.
然后再试一次。
The way you would have spotted this yourself is by reading the output of make. Notice the first line in the output you exhibit:
您自己发现这一点的方法是阅读 make 的输出。请注意您展示的输出中的第一行：
g++ -c -o triangle.o triangle.cpp
No include flags. No -g. None of the stuff that you took all the trouble to set up.
没有包含标志。没有-g。没有你费心去设置的东西。
回答by Micha? ?rajer
Try set flags for g++
尝试为 g++ 设置标志
CXXFLAGS = $(CFLAGS)
