# SPDX-License-Identifier: AGPL-3.0-or-later
# Copyright (C) 2026 David (Corey) Herrera
# Makefile — SR4 ternary optimizer reference library.
#
# Uses the same stable "hard-rule" flags as the SR4 research prototype so the
# integer numerics are bit-identical to it: pure-integer stochastic rounding
# is immune to -O level and -ffast-math, and these flags keep it that way.
#
#   make            build the static lib (libternary_optim.a) + the example
#   make lib        build only the static library
#   make example    build only the demo
#   make run        build and run the demo
#   make clean      remove all build artifacts

CC      ?= cc
CFLAGS  := -std=c11 -O3 -march=native -fno-fast-math -ffp-contract=off -Wall -Wextra
AR      := ar
ARFLAGS := rcs

LIB     := libternary_optim.a
OBJ     := ternary_optim.o
EXAMPLE := example

.PHONY: all lib run clean

all: lib $(EXAMPLE)

lib: $(LIB)

$(LIB): $(OBJ)
	$(AR) $(ARFLAGS) $@ $^

ternary_optim.o: ternary_optim.c ternary_optim.h
	$(CC) $(CFLAGS) -c ternary_optim.c -o $@

$(EXAMPLE): example.c $(LIB)
	$(CC) $(CFLAGS) example.c $(LIB) -lm -o $@

run: $(EXAMPLE)
	./$(EXAMPLE)

clean:
	rm -f $(OBJ) $(LIB) $(EXAMPLE)