NAME=bhash
PREFIX=/usr/local
CC=cc
CFLAGS=-std=c99 -Werror -D_XOPEN_SOURCE=700 -D_POSIX_C_SOURCE=200809L -flto -fPIC
CWARN=-Wall -Wextra \
  -Wpedantic -Wsign-conversion -Wtype-limits -Wunused-result -Wnull-dereference -Wno-nonnull-compare \
	-Waggregate-return -Walloc-zero -Walloca -Warith-conversion -Wcast-align -Wcast-align=strict \
	-Wdangling-else -Wdate-time -Wdisabled-optimization -Wdouble-promotion -Wduplicated-branches \
	-Wduplicated-cond -Wexpansion-to-defined -Wfloat-conversion -Wfloat-equal -Wformat-nonliteral \
	-Wformat-security -Wformat-signedness -Wframe-address -Winline -Winvalid-pch -Wjump-misses-init \
	-Wlogical-op -Wlong-long -Wmissing-format-attribute -Wmissing-include-dirs -Wmissing-noreturn \
	-Woverlength-strings -Wpacked -Wpacked-not-aligned -Wpointer-arith \
	-Wredundant-decls -Wshadow -Wshadow=compatible-local -Wshadow=global -Wshadow=local \
	-Wsign-conversion -Wstack-protector -Wsuggest-attribute=const -Wswitch-default -Wswitch-enum \
	-Wsync-nand -Wtrampolines -Wundef -Wunsuffixed-float-constants -Wunused -Wunused-but-set-variable \
	-Wunused-const-variable -Wunused-local-typedefs -Wunused-macros -Wvariadic-macros -Wvector-operation-performance \
	-Wvla -Wwrite-strings
EXTRA=
G=
O=-O3
ALL_FLAGS=$(CFLAGS) $(OSFLAGS) $(EXTRA) $(CWARN) $(G) $(O)

LIBFILE=lib$(NAME).so
CFILES=bhash.c
OBJFILES=$(CFILES:.c=.o)

all: $(LIBFILE)

clean:
	rm -f $(LIBFILE) $(OBJFILES)

$(LIBFILE): $(OBJFILES)
	$(CC) $^ -Wl,-soname,$(LIBFILE) -shared -o $@

%.o: %.c bhash.h
	$(CC) -c $(ALL_FLAGS) -o $@ $<

splint:
	splint -weak -posix-lib -unrecog -initallelements -fullinitblock $(CFILES)

example: example.c $(OBJFILES)
	$(CC) $^ $(G) $(O) -o $@ -lgc -lintern

install: $(LIBFILE) bhash.h
	mkdir -p -m 755 "$(PREFIX)/lib" "$(PREFIX)/include"
	cp $(LIBFILE) "$(PREFIX)/lib"
	cp bhash.h "$(PREFIX)/include/$(NAME).h"

uninstall:
	rm -vf "$(PREFIX)/lib/$(LIBFILE)" "$(PREFIX)/include/$(NAME).h"

stress_test: stress_test.c bhash.o
	$(CC) $(ALL_FLAGS) -o $@ $< bhash.o

profile: stress_test
	perf stat -r 1000 -e L1-dcache-loads,L1-dcache-load-misses,L1-dcache-stores -e cycles ./stress_test 500 100000000

.PHONY: all install uninstall clean splint