Hello,

I'm no good with makefiles yet. Nonetheless, I have the source for a program that I would like to build and a makefile that worked with previous versions of the program. But I get an error pretty fast saying: *** No rule to make target `main.o', needed by `SDIFEdit'.

Here is the guts of the makefile. main.cpp is in ../source.:


MAKE = make
PROJECTDIR = $(PWD)
CXX = g++
PREFIX=/usr/local

CXXFLAGS = -Wall -W $(DBFLAG) $(OPTFLAG) $(CPPFLAGS) -I../source/stk -I../source -I. \
-I${PREFIX}/include -I/usr/include -I/usr/local/include -D __LINUX_OSS__
LDFLAGS = $(DBFLAG) -L${PREFIX}/lib/$(SYS) -L/usr/X11R6/lib -L/usr/lib -L. -L.. -lglut -lGL -lGLU -lXmu -lSM -lICE -lXext -lX11 -ldl -lsdif$(DBEXT) -lm


editor_OBJS = Window.o MainWindow.o SdifViewer.o SplineEditor.o SplineSurface.o SdifDescriptor.o SVMatrix.o SVStream.o GUIComponent.o Sonagram.o ColorChooser.o SliceViewWindow.o ViewPointsWindow.o AudioWindow.o AudioPlayer.o EventManager.o

stk_OBJS = stk/Stk.o stk/WaveLoop.o stk/WvIn.o stk/WvOut.o stk/RtWvOut.o stk/RtAudio.o

OBJS = main.o $(editor_OBJS)

all: SDIFEdit

SDIFEdit: $(OBJS)
$(CXX) $(OBJS) $(LDFLAGS) -o SDIFEdit


If anyone wiser than myself can give some insight, thankyou many times.

Richie

Since the object files don't already exist within the directory, the Makefile needs to know how to make them. In other words, for each object file, you need a rule telling how to compile it from source.

oops, I left out one important line:

all: SDIFEdit

SDIFEdit: $(OBJS)
$(CXX) $(OBJS) $(LDFLAGS) -o SDIFEdit

%.o: %.cpp
$(CXX) $(CXXFLAGS) -c $<


I would assume this is the rule, saying look for a .cpp file with the same name, then abide the CXX flags already set and do what -c$< means. It obviously isn't what gcc is looking for though.

I hope to get this fixed soon, since this program is essential to work I'm doing in school. Likewise, I hope to learn how to use makefiles soon, since they cause my eyes to squint alot right now.

Cheers,
Richie