# shared compiler settings and rules

CXX ?= g++

CXXWARNINGS ?= -Wall -Wextra -Wundef -pedantic

CXXFLAGS ?= ${CXXWARNINGS} -g -O3 -std=c++11

COMPILE = ${CXX} ${CXXFLAGS} ${CPPFLAGS} -c

LINK = ${CXX} ${LDFLAGS}

.DEFAULT_GOAL := ${TARGET}

# link executables from object files

%: %.o

    ${LINK} -o $@ $^ ${LDLIBS}

# object files from cpp files

%.o: %.cpp

    ${COMPILE} -o $@ $<

# Dependency determination.

Makefile.dep: [^_]*.cpp

    ${COMPILE} -MM $^ >$@

-include Makefile.dep