Creating two separate executables from a makefile (g++)

Question

Currently, I have my makefile set up to compile and make a fairly large project. I have written a second cpp file with main function for running tests. I want these to run sep

Answer 1

Here's one way to do it:

CXXFLAGS += -std=c++11 -Wall -O3

all: myprog mytest

myprog.cpp: main.cpp
    cp -vf $< $@
myprog: myprog.o Foo.o Bar.o Test.o A.o B.o C.o

mytest.cpp: main.cpp
    cp -vf $< $@
mytest.o: CPPFLAGS += -DDEBUG
mytest.o: CXXFLAGS += -O0 -g
mytest: mytest.o Foo.o Bar.o Test.o A.o B.o C.o

This works because built-in rules exist for compiling objects from c++ source (%.o: %.cpp) and linking main programs (%: %.o).

Also note the use of target-specific values for the variables CPPFLAGS and CXXFLAGS.