MAKEFLAGS="-j $(grep -c ^processor /proc/cpuinfo)" CXXFLAGS:=$(CXXFLAGS) -std=c++20 -Wall -Wextra -Werror=switch -Werror=return-type -Werror=unused-result CPPFLAGS:=$(CPPFLAGS) -Ilib/expected/ -I. -Ilib/bestline/ -Ilib/rtmidi/ LDFLAGS=-flto LDLIBS= -lpthread RELEASE_FLAGS=-O2 DEBUG_FLAGS=-O0 -ggdb -fsanitize=undefined -DDebug ifeq ($(shell uname),Darwin) os=macos else os=linux endif