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# references:
# BUILD_DIR and per-.cpp file https://spin.atomicobject.com/2016/08/26/makefile-c-projects/
awkbin :=$(shell which awk)
cpbin :=$(shell which cp)
echobin :=$(shell which echo)
findbin :=$(shell which find)
grepbin :=$(shell which grep)
installbin :=$(shell which install)
rmbin :=$(shell which rm)
sedbin :=$(shell which sed)
sortbin :=$(shell which sort)
truebin :=$(shell which true)
CXX = g++
# to get full debug symbols, add -g to both FLAGS
CXXFLAGS = -g -std=c++11 -Wall -Weffc++ -Wextra -Wsign-conversion -Werror
# adding -s will make the linker strip the file
LDFLAGS = -g
src = $(wildcard *.cpp)
obj = $(src:.cpp=.o)
BUILD_DIR ?= .
OUTEXE = mine
all: $(OUTEXE)
# compile, which is not actually used?
$(BUILD_DIR)%.o: %.cpp
$(CXX) -c $(CXXFLAGS) $+
# link
$(OUTEXE): $(obj)
$(CXX) -o $@ $^ $(LDFLAGS)
.PHONY: clean cleanall list
list:
@$(MAKE) -pRrq -f $(lastword $(MAKEFILE_LIST)) : 2>/dev/null | ${awkbin} -v RS= -F: '/^# File/,/^# Finished Make data base/ {if ($$1 !~ "^[#.]") {print $$1}}' | ${sortbin} | ${grepbin} -E -v -e '^[^[:alnum:]]' -e '^$@$$' -e '\.(cp*|o)'
clean:
rm -f $(obj)
cleanall:
rm -f $(obj) $(OUTEXE)
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