Producing assembly and object output with GNU make

markelo · 12-21-2005, 05:07 PM

Second try
http://www.gnu.org/software/make/manual/make.htmlThe manual

Current makefile

Code:

all: $(BINARIES) $(OBJS) $(ASMS)

#Assembly output
%.S: %.cpp 
	$(CXX) -c -S $< $(CXXFLAGS) -o $@

#Compiling
%.o: %.cpp
	$(CXX) -c $^ $(CXXFLAGS)

# linking
test: $(OBJS) $(ASMS)
	$(CXX) $^ -o $@

And explanations

BINARIES has only test.
OBJS have all cpp files but they end with .o
ASMS have all cpp files but they end with .S

And the makefile only produces .o files and executable.
Not the assembly files which I also want. Help appreciated.

jbetten · 12-21-2005, 09:48 PM

Nothing obviously stands out, but try...

- removing $(ASM) from the test dependency list.
- removing $(OBJS) from the all dependency list.
- removing -c from the %.S build command.

markelo · 12-22-2005, 03:21 AM

Quote:

Originally Posted by jbetten

Nothing obviously stands out, but try...

- removing $(ASM) from the test dependency list.
- removing $(OBJS) from the all dependency list.
- removing -c from the %.S build command.

Here is my working solution. Thank you from your help.

Code:

all: $(BINARIES) $(ASMS)

#Assembly output
%.s: %.cpp
	@echo myassembly output 
	$(CXX) -S $< $(CXXFLAGS) -o $@

#Compiling 
%.o: %.s $(ASMS)
	@echo myasmcompile
	$(CXX) -c $< $(CXXFLAGS) -o $@

# linking
test: $(OBJS)
	$(CXX) $^ -o $@

There is simpler version but that doesn't produce .o files ( at least they are not left in harddisk ). This version produces .o and .s files.