Makefile

prefix=/usr/local
PREFIX=$(prefix)
BINDIR=$(PREFIX)/bin
MAN1DIR=$(PREFIX)/share/man/man1

SRCS=ioping.c
BINARY=ioping
MANS=ioping.1
MANS_F=$(MANS:.1=.txt) $(MANS:.1=.pdf)
DOCS=README.md LICENSE changelog
SPEC=ioping.spec

PACKAGE=ioping
GIT_VER:=$(shell test -d .git && git describe --tags --match 'v[0-9]*' \
		--abbrev=0 | sed 's/v//')
SRC_VER:=$(shell sed -ne 's/\# define VERSION \"\(.*\)\"/\1/p' ioping.c)
EXTRA_VERSION:=$(shell test -d .git && git describe --tags --match 'v[0-9]*' \
		--dirty=+ | sed 's/^v[^-]*//;s/-/./g')
VERSION:=$(SRC_VER)$(EXTRA_VERSION)
DISTDIR=$(PACKAGE)-$(VERSION)
DISTFILES=$(SRCS) $(MANS) $(DOCS) $(SPEC) Makefile
PACKFILES=$(BINARY) $(MANS) $(MANS_F) $(DOCS)

CFLAGS		?= -g -O2 -funroll-loops -ftree-vectorize
CFLAGS		+= -std=gnu99 -Wall -Wextra -pedantic
CPPFLAGS	= -DEXTRA_VERSION=\"${EXTRA_VERSION}\"

ifneq (,$(STATIC))
CFLAGS		+= -static
endif

LIBS		= -lm -lrt

MINGW		= x86_64-w64-mingw32-
MINGW_CFLAGS	= -specs=ucrt-spec -Wno-format
MINGW_LIBS	= -lm

CC		= $(CROSS_COMPILE)gcc
STRIP		= $(CROSS_COMPILE)strip
TARGET		= $(shell ${CC} -dumpmachine)

ifneq (,$(findstring -apple-,${TARGET}))
LIBS=-lm
endif

ifneq (,$(findstring -mingw,${TARGET}))
BINARY		:= $(BINARY:=.exe)
CFLAGS		+= ${MINGW_CFLAGS}
LIBS		:= ${MINGW_LIBS}
${BINARY}: ucrt-spec
endif

all: checkver $(BINARY)

static:
	$(MAKE) STATIC=1

version: checkver
	@echo ${VERSION}

checkver:
	@if test -n "$(GIT_VER)" -a "$(GIT_VER)" != "$(SRC_VER)"; then \
		echo "ERROR: Version mismatch between git and source"; \
		echo git: $(GIT_VER), src: $(SRC_VER); \
		exit 1; \
	fi

clean:
	$(RM) -f $(BINARY) $(MANS_F) ioping.tmp

strip: $(BINARY)
	$(STRIP) $^

test: $(BINARY)
	./$(BINARY) -i 10ms -c 3 -s 512 -S 16k ${PWD}
	./$(BINARY) -w 10ms -R -k -S 1m .
	./$(BINARY) -w 10ms -RL ioping.tmp
	rm ioping.tmp

install: $(BINARY) $(MANS)
	mkdir -p $(DESTDIR)$(BINDIR)
	install -m 0755 $(BINARY) $(DESTDIR)$(BINDIR)
	mkdir -p $(DESTDIR)$(MAN1DIR)
	install -m 644 $(MANS) $(DESTDIR)$(MAN1DIR)

%.ps: %.1
	man -t ./$< > $@

%.pdf: %.ps
	ps2pdf $< $@

%.txt: %.1
	MANWIDTH=80 man ./$< | col -b > $@

$(BINARY): $(SRCS)
	$(CC) -o $@ $(SRCS) $(CPPFLAGS) $(CFLAGS) $(LDFLAGS) $(LIBS)

ucrt-spec:
	${MINGW}gcc -dumpspecs | sed 's/-lmsvcrt/-lucrt/' > $@

mingw:
	$(MAKE) CROSS_COMPILE=${MINGW}

dist: checkver $(DISTFILES)
	tar -cz --transform='s,^,$(DISTDIR)/,S' $^ -f $(DISTDIR).tar.gz

binary-tgz: checkver $(PACKFILES)
	${STRIP} ${BINARY}
	tar -cz --transform='s,^,$(DISTDIR)/,S' -f ${PACKAGE}-${VERSION}-${TARGET}.tgz $^

binary-zip: checkver $(PACKFILES)
	${STRIP} ${BINARY}
	ln -s . $(DISTDIR)
	zip ${PACKAGE}-${VERSION}-${TARGET}.zip $(addprefix $(DISTDIR)/,$^)
	rm $(DISTDIR)

docker-build-alpine docker-build-debian docker-build-fedora docker-build-ubuntu:
	docker build --target ${@:docker-build-%=%}-bin . -o bin/${@:docker-build-%=%}

.PHONY: all version checkver clean strip test install dist binary-tgz binary-zip