# NOTE: these are needed by the configure.in inside the packages folder
N2N_VERSION_SHORT=@N2N_VERSION_SHORT@
GIT_COMMITS=@GIT_COMMITS@
GIT_DESCRIBE=$(shell git describe --always --dirty)

########

export CC
export AR
CC=@CC@
AR=@AR@

#Ultrasparc64 users experiencing SIGBUS should try the following gcc options
#(thanks to Robert Gibbon)
PLATOPTS_SPARC64=-mcpu=ultrasparc -pipe -fomit-frame-pointer -ffast-math -finline-functions -fweb -frename-registers -mapp-regs

export CFLAGS
export LDFLAGS

CFLAGS=@CFLAGS@ -I ./include
LDFLAGS=@LDFLAGS@ -L .

OPENSSL_CFLAGS=$(shell pkg-config openssl; echo $$?)
ifeq ($(OPENSSL_CFLAGS), 0)
  CFLAGS+=$(shell pkg-config --cflags-only-I openssl)
endif

WARN=-Wall
CFLAGS+=$(DEBUG) $(OPTIMIZATION) $(WARN) $(OPTIONS) $(PLATOPTS)

# Quick sanity check on our build environment
UNAME_S := $(shell uname -s)
ifndef UNAME_S
# This could happen if the Makefile is unable to run "uname", which can
# happen if the shell has a bad path (or is the wrong shell)
$(error Could not run uname command, cannot continue)
endif

# Any compile environment that needs different flags, libraries, includes or
# other settings will get its own CONFIG_TARGET value.  For cross compiling,
# this might be set externally to the Makefile, but if not set we try to
# set a reasonable default.

export CONFIG_TARGET
ifndef CONFIG_TARGET
ifeq ($(shell uname -o),Msys)
CONFIG_TARGET=mingw
else ifeq ($(shell uname -s),Darwin)
CONFIG_TARGET=darwin
else ifeq ($(shell uname), SunOS)
CONFIG_TARGET=sunos
else
CONFIG_TARGET=generic
endif
endif

export MKDIR
export INSTALL
export INSTALL_PROG
export INSTALL_DOC
export SBINDIR

MKDIR=mkdir -p
INSTALL=install
INSTALL_PROG=$(INSTALL) -m755
INSTALL_DOC=$(INSTALL) -m644

# DESTDIR set in debian make system
PREFIX?=$(DESTDIR)/usr
ifeq ($(CONFIG_TARGET),darwin)
SBINDIR=$(PREFIX)/local/sbin
else
SBINDIR=$(PREFIX)/sbin
endif

MANDIR?=$(PREFIX)/share/man
MAN1DIR=$(MANDIR)/man1
MAN7DIR=$(MANDIR)/man7
MAN8DIR=$(MANDIR)/man8

N2N_LIB=libn2n.a
N2N_OBJS=$(patsubst src/%.c, src/%.o, $(wildcard src/*.c))
N2N_DEPS=$(wildcard include/*.h) $(wildcard src/*.c) Makefile

export LDLIBS
LDLIBS+=-ln2n
LDLIBS+=@N2N_LIBS@

#For OpenSolaris (Solaris too?)
ifeq ($(CONFIG_TARGET), sunos)
LDLIBS+=-lsocket -lnsl
endif

ifeq ($(CONFIG_TARGET),mingw)
CFLAGS+=-I. -I./win32 -DWIN32
LDLIBS+=$(abspath win32/n2n_win32.a)
LDLIBS+=-lws2_32 -liphlpapi
N2N_DEPS+=win32/n2n_win32.a
SUBDIRS+=win32
endif

APPS=edge
APPS+=supernode
APPS+=example_edge_embed_quick_edge_init
APPS+=example_edge_embed
APPS+=example_sn_embed

DOCS=edge.8.gz supernode.1.gz n2n.7.gz

SUBDIRS+=tools

COVERAGEDIR?=coverage

.PHONY: $(SUBDIRS)
.PHONY: steps build push all clean install test cover gcov build-dep
all: $(APPS) $(DOCS) $(SUBDIRS)

tools: $(N2N_LIB)
	$(MAKE) -C $@

win32:
	$(MAKE) -C $@

src/edge.o: $(N2N_DEPS)
src/supernode.o: $(N2N_DEPS)
src/example_edge_embed_quick_edge_init.o: $(N2N_DEPS)
src/example_sn_embed.o: $(N2N_DEPS)
src/example_edge_embed.o: $(N2N_DEPS)

src/edge: $(N2N_LIB)
src/supernode: $(N2N_LIB)
src/example_edge_embed_quick_edge_init: $(N2N_LIB)
src/example_sn_embed: $(N2N_LIB)
src/example_edge_embed: $(N2N_LIB)

%: src/%
	cp $< $@

%.gz : %
	gzip -c $< > $@

$(N2N_LIB): $(N2N_OBJS)
	$(AR) rcs $(N2N_LIB) $(N2N_OBJS)
#	$(RANLIB) $@

win32/n2n_win32.a: win32

test: tools
	tools/test_harness

lint.python:
	flake8 scripts/n2nctl scripts/n2nhttpd

# To generate coverage information, run configure with
# CFLAGS="-fprofile-arcs -ftest-coverage" LDFLAGS="--coverage"
# and run the desired tests.  Ensure that package gcovr is installed
# and then run "make cover"
cover:
	mkdir -p $(COVERAGEDIR)
	gcovr -s --html --html-details --output=$(COVERAGEDIR)/index.html

# Use coverage data to generate gcov text report files.
# Unfortunately, these end up in the wrong directory due to the
# makefile layout
# The steps to use this are similar to the "make cover" above
gcov:
	gcov $(N2N_OBJS)
	$(MAKE) -C tools gcov

# This is the superset of all packages that might be needed.
# It is a convinent target to use during development or from a CI/CD system
build-dep:
ifeq ($(CONFIG_TARGET),generic)
	sudo apt install build-essential autoconf libcap-dev libzstd-dev gcovr flake8
else ifeq ($(CONFIG_TARGET),darwin)
	brew install automake gcovr
else
	echo Not attempting to install dependancies for system $(CONFIG_TARGET)
endif

clean:
	rm -rf $(N2N_OBJS) $(N2N_LIB) $(APPS) $(DOCS) $(COVERAGEDIR)/ *.dSYM *~
	rm -f tests/*.out src/*.gcno src/*.gcda
	for dir in $(SUBDIRS); do $(MAKE) -C $$dir clean; done

install: edge supernode edge.8.gz supernode.1.gz n2n.7.gz
	echo "MANDIR=$(MANDIR)"
	$(MKDIR) $(SBINDIR) $(MAN1DIR) $(MAN7DIR) $(MAN8DIR)
	$(INSTALL_PROG) supernode $(SBINDIR)/
	$(INSTALL_PROG) edge $(SBINDIR)/
	$(INSTALL_DOC) edge.8.gz $(MAN8DIR)/
	$(INSTALL_DOC) supernode.1.gz $(MAN1DIR)/
	$(INSTALL_DOC) n2n.7.gz $(MAN7DIR)/
	$(MAKE) -C tools install SBINDIR=$(abspath $(SBINDIR))

# Docker builder section
DOCKER_IMAGE_NAME=ntop/supernode
DOCKER_IMAGE_VERSION=$N2N_VERSION_SHORT
N2N_COMMIT_HASH=@GIT_REVISION@

default: steps

steps:
	if [ "$(TARGET_ARCHITECTURE)" = "arm32v7" ] || [ "$(TARGET_ARCHITECTURE)" = "" ]; then DOCKER_IMAGE_FILENAME="Dockerfile.arm32v7" DOCKER_IMAGE_TAGNAME=$(DOCKER_IMAGE_NAME):$(DOCKER_IMAGE_VERSION)-arm32v7 make build; fi
	if [ "$(TARGET_ARCHITECTURE)" = "x86_64" ] || [ "$(TARGET_ARCHITECTURE)" = "" ]; then DOCKER_IMAGE_FILENAME="Dockerfile.x86_64" DOCKER_IMAGE_TAGNAME=$(DOCKER_IMAGE_NAME):$(DOCKER_IMAGE_VERSION)-x86_64 make build; fi

build:
	$(eval OS := $(shell uname -s))
	$(eval ARCHITECTURE := $(shell export DOCKER_IMAGE_TAGNAME="$(DOCKER_IMAGE_TAGNAME)"; echo $$DOCKER_IMAGE_TAGNAME | grep -oe -.*))

	docker build --target builder --build-arg COMMIT_HASH=$(N2N_COMMIT_HASH) -t $(DOCKER_IMAGE_TAGNAME) -f image-platforms/$(DOCKER_IMAGE_FILENAME) .

	docker container create --name builder $(DOCKER_IMAGE_TAGNAME)
	if [ ! -d "./build" ]; then mkdir ./build; fi
	docker container cp builder:/usr/src/n2n/supernode ./build/supernode-$(OS)$(ARCHITECTURE)
	docker container cp builder:/usr/src/n2n/edge ./build/edge-$(OS)$(ARCHITECTURE)
	docker container rm -f builder

	docker build --build-arg COMMIT_HASH=$(N2N_COMMIT_HASH) -t $(DOCKER_IMAGE_TAGNAME) -f image-platforms/$(DOCKER_IMAGE_FILENAME) .
	docker tag $(DOCKER_IMAGE_TAGNAME) $(DOCKER_IMAGE_NAME):latest$(ARCHITECTURE)

push:
	if [ ! "$(TARGET_ARCHITECTURE)" = "" ]; then \
		docker push $(DOCKER_IMAGE_NAME):$(DOCKER_IMAGE_VERSION)-$(TARGET_ARCHITECTURE); \
		docker push $(DOCKER_IMAGE_NAME):latest-$(TARGET_ARCHITECTURE); \
	else \
		echo "Please pass TARGET_ARCHITECTURE, see README.md."; \
	fi

# End Docker builder section