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.POSIX:
DATE         = 1970-01-01
VERSION      = 0.1.0
NAME         = siphash
NAME_UC      = $(NAME)
## Installation prefix.  Defaults to "/usr".
PREFIX       = /usr
BINDIR       = $(PREFIX)/bin
LIBDIR       = $(PREFIX)/lib
INCLUDEDIR   = $(PREFIX)/include
SRCDIR       = $(PREFIX)/src/$(NAME)
SHAREDIR     = $(PREFIX)/share
LOCALEDIR    = $(SHAREDIR)/locale
MANDIR       = $(SHAREDIR)/man
EXEC         = ./
## Where to store the installation.  Empty by default.
DESTDIR      =
LDLIBS       =



.SUFFIXES:
.SUFFIXES: .in .c .o .a .bin .bin-check

.in:
	sed \
		-e 's:@VERSION@:$(VERSION):g' \
		-e 's:@DATE@:$(DATE):g'       \
		-e 's:@NAME@:$(NAME):g'       \
		< $< > $@
	if [ -x $< ]; then chmod +x $@; fi

.c.o:
	$(CC) $(CFLAGS) -o $@ -c $<

.a.bin:
	$(CC) $(LDFLAGS) -o $@ $< $(LDLIBS)



all:
include deps.mk


sources.h    = $(sources.c:.c=.h)
sources.o    = $(sources.c:.c=.o)
tests.o      = $(tests.c:.c=.o)
tests.a      = $(tests.c:.c=.a)
tests.bin    = $(tests.c:.c=.bin)

objects = \
	$(sources.o)                   \
	$(tests.o)                     \
	src/main.o                     \

archives = \
	lib$(NAME).a                   \
	$(tests.a)                     \
	$(NAME).a                      \

sources = \
	$(sources.c)                   \
	$(sources.h)                   \
	src/meta.h.in                  \
	src/meta.h                     \
	src/main.c                     \
	src/$(NAME).h                  \


derived-assets = \
	$(objects)                     \
	$(archives)                    \
	src/meta.h                     \
	$(tests.bin)                   \
	$(NAME).bin                    \

side-assets = \



## Default target.  Builds all artifacts required for testing
## and installation.
all: $(derived-assets)


lib$(NAME).a: $(sources.o)
$(NAME).a:    $(sources.o) src/main.o
src/meta.h $(objects): Makefile deps.mk
src/main.o: src/$(NAME).h


$(archives):
	$(AR) $(ARFLAGS) $@ $?



tests.bin-check = $(tests.c:.c=.bin-check)
$(tests.bin-check):
	$(EXEC)$*.bin

check-unit: $(tests.bin-check)


integration-tests = \
	tests/cli-opts.sh              \
	tests/assert-identical.sh      \

$(integration-tests): $(NAME).bin ALWAYS
	sh $@ $(EXEC)$(NAME).bin

check-integration: $(integration-tests)


## Run all tests.  Each test suite is isolated, so that a parallel
## build can run tests at the same time.  The required artifacts
## are created if missing.
check: check-unit check-integration



## Remove *all* derived artifacts produced during the build.
## A dedicated test asserts that this is always true.
clean:
	rm -rf $(derived-assets) $(side-assets)


## Installs into $(DESTDIR)$(PREFIX).  Its dependency target
## ensures that all installable artifacts are crafted beforehand.
install: all
	mkdir -p \
		'$(DESTDIR)$(BINDIR)'     \
		'$(DESTDIR)$(LIBDIR)'     \
		'$(DESTDIR)$(SRCDIR)'     \
		'$(DESTDIR)$(INCLUDEDIR)' \

	cp $(NAME).bin       '$(DESTDIR)$(BINDIR)'/$(NAME)
	cp lib$(NAME).a      '$(DESTDIR)$(LIBDIR)'
	cp src/$(NAME).h     '$(DESTDIR)$(INCLUDEDIR)'
	cp $(sources)        '$(DESTDIR)$(SRCDIR)'

## Uninstalls from $(DESTDIR)$(PREFIX).  This is a perfect mirror
## of the "install" target, and removes *all* that was installed.
## A dedicated test asserts that this is always true.
uninstall:
	rm -rf \
		'$(DESTDIR)$(BINDIR)'/$(NAME)         \
		'$(DESTDIR)$(LIBDIR)'/lib$(NAME).a    \
		'$(DESTDIR)$(INCLUDEDIR)'/$(NAME).h   \
		'$(DESTDIR)$(SRCDIR)'                 \



ALWAYS: