I have some files in a folder source. I want to process them using program program and output them into folder target just by typing
$ make
How should I write a makefile for this?
Directory tree:
/
Makefile
program
/source
foo.x
bar.x
spam.x
/target
foo.y
bar.y
spam.y
make
A1) Something like this:
SOURCES := $(wildcard source/*)
TARGETS := $(patsubst source/%.x, target/%.y, $(SOURCES))
all: $(TARGETS)
target/%.y: source/%.x
program -i $< -o $@
Q2) I have three source files and I want to write a makefile to run them as a program. But it seems that my makefile is not good enough to run. When I typed $ make -f Makefile in the command line, I got such kind of output:
make: *** No rule to make target `main.c', needed by
`main.o'. Stop.
A2) You makefile might be OK. It is complainin that it can't find a source file "main.c" and has no rule to make it.
Well, obviously, if that's your source, it should exist already - it does not need to be made. You do that with an editor
So why can't make see your source. Wrong directory, or wrong filename, maybe.
Or
Make sure you write like this.
CCC=g++
CCFLAGS=-c -D _ANSI_C_SOURCE -D CM_DISCLOSURE -qstaticinline
EXECUTABLE=execVal
objects = cmrins.o: \
cmotrmcd.o
$(EXECUTABLE): $(objects)
$(CCC) $(CCFLAGS) -Wall -o $(EXECUTABLE) $(Objects) $(LDFLAGS)
cmrins.o:
$(CCC) $(CCFLAGS) cmrins.cpp
cmotrmcd.o:
$(CCC) $(CCFLAGS) cmotrmcd.cpp
After you write this also, if the error comes, you do the "touch main.c"
That will change the timestamp of the main.c
and use
make -f MakefileName
This will make forced execution.
