intcmp(1): new tool; npc(1): new tool; scrut(1): new tool; str(1): new tool; strcmp(1): new tool; tests: added POSIX compatibility test and C compiler compatibility test; Makefile: converted to GNUmakefile; README: added README; docs: added docs

GNUmakefile

@@ -0,0 +1,73 @@
+# Copyright (c) 2023 Emma Tebibyte <emma@tebibyte.media>
+# Copyright (c) 2023 DTB <trinity@trinity.moe>
+# 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
+
+ifeq ($(CC), gcc)
+	CFLAGS=-O3 -s -Wl,-z,noseparate-code,-z,nosectionheader -flto -Lbuild
+endif
+
+ifeq ($(CC), clang)
+	CFLAGS=-O3 -Wall -Lbuild
+endif
+
+ifeq ($(CC), tcc)
+	CFLAGS=-O3 -s -Wl -flto -Lbuild
+endif
+
+build: build_dir false intcmp scrut str strcmp true
+
+build_dir:
+	mkdir -p build
+
+clean:
+	rm -rf build/
+
+install: build
+	mkdir -p $(PREFIX)/bin $(PREFIX)/lib $(PREFIX)/man/man1 $(PREFIX)/man/man3
+	cp -f build/*.o $(PREFIX)/lib/
+	cp -f build/*.so $(PREFIX)/lib/
+	cp -f build/* $(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.c build_dir
+	$(CC) $(CFLAGS) -o build/false src/false.c
+
+intcmp: src/intcmp.c build_dir
+	$(CC) $(CFLAGS) -o build/intcmp src/intcmp.c
+
+scrut: src/scrut.c libfileis build_dir
+	$(CC) $(CFLAGS) -lfileis -o build/scrut src/scrut.c
+
+str: src/str.c build_dir
+	$(CC) $(CFLAGS) -o build/str src/str.c
+
+strcmp: src/strcmp.c build_dir
+	$(CC) $(CFLAGS) -o build/strcmp src/strcmp.c
+
+true: src/true.c build_dir
+	$(CC) $(CFLAGS) -o build/true src/true.c
+
+libfileis: src/libfileis.c src/libfileis.h build_dir
+	$(CC) $(CFLAGS) -c -fPIC -o build/libfileis.o src/libfileis.c
+	$(CC) -shared -o build/libfileis.so build/libfileis.o
+