# Copyright (c) 2023 Emma Tebibyte <emma@tebibyte.media>
# Copyright (c) 2023 DTB <trinity@trinity.moe>
# Copyright (c) 2023 Sasha Koshka <sashakoshka@tebibyte.media>
# SPDX-License-Identifier: FSFAP
#
# Copying and distribution of this file, with or without modification, are
# permitted in any medium without royalty provided the copyright notice and this
# notice are preserved.  This file is offered as-is, without any warranty.

# If we want to use POSIX make we can’t use ifeq
# .POSIX:
# .PRAGMA: posix_202x
.PHONY: clean
.PHONY: install
.PHONY: test

PREFIX=/usr/local

CC=cc
CFLAGS=-O3 -Lbuild/lib

RUSTC=rustc
RUSTCFLAGS=-C opt-level=z -C codegen-units=1 -C panic=abort -C lto=y -C strip=symbols

ifeq ($(CC), gcc)
	CFLAGS=-O3 -s -Wl,-z,noseparate-code,-z,nosectionheader -flto \
		-Lbuild/lib
endif

ifeq ($(CC), clang)
	CFLAGS=-O3 -Wall -Lbuild/lib
endif

ifeq ($(CC), tcc)
	CFLAGS=-O3 -s -Wl -flto -Lbuild/lib
endif

build: build_dir false intcmp scrut str strcmp true

build_dir:
	mkdir -p build/o build/lib build/bin

clean:
	rm -rf build/

install: build
	mkdir -p $(PREFIX)/bin $(PREFIX)/lib
	mkdir -p $(PREFIX)/man/man1 $(PREFIX)/man/man3
	cp -f build/lib/*.so $(PREFIX)/lib/
	cp -f build/bin/* $(PREFIX)/bin/
	cp -f docs/*.1 $(PREFIX)/man/man1/
	cp -f docs/*.3 $(PREFIX)/man/man3/

test: build
	tests/cc-compat.sh
	tests/posix-compat.sh

false: src/false.rs build_dir
	$(RUSTC) $(RUSTCFLAGS) -o build/bin/false src/false.rs

intcmp: src/intcmp.c build_dir
	$(CC) $(CFLAGS) -o build/bin/intcmp src/intcmp.c

scrut: src/scrut.c build_dir
	$(CC) $(CFLAGS) -o build/bin/scrut src/scrut.c

str: src/str.c build_dir
	$(CC) $(CFLAGS) -o build/bin/str src/str.c

strcmp: src/strcmp.c build_dir
	$(CC) $(CFLAGS) -o build/bin/strcmp src/strcmp.c

true: src/true.rs build_dir
	$(RUSTC) $(RUSTCFLAGS) -o build/bin/true src/true.rs