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

tests/cc-compat.sh

@@ -0,0 +1,35 @@
+#!/bin/sh
+
+# Copyright (c) 2023 Emma Tebibyte <emma@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.
+
+set -e
+
+if ! ls GNUmakefile >/dev/null 2>&1
+then
+	printf '%s: Run this script in the root of the project.\n' "$0" 1>&2 
+	exit 1
+fi
+
+make clean
+
+for CC in cc\
+	clang \
+	gcc \
+	tcc \
+	'zig cc'
+do
+	export CC
+	printf '%s: %s: Testing build.\n' "$0" "$CC"
+
+	make CC="$CC" && printf '%s: Build successful.\n' "$0"
+
+	ls -lA build/
+
+	make clean
+	printf '\n'
+done

tests/posix-compat.sh

@@ -0,0 +1,24 @@
+#!/bin/sh
+
+# Copyright (c) 2023 Emma Tebibyte <emma@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.
+
+set -e
+
+if ! ls GNUmakefile >/dev/null 2>&1
+then
+	printf '%s: Run this script in the root of the project.\n' "$0" 1>&2 
+	exit 1
+fi
+
+printf "Starting POSIX compatibility testing.\n"
+
+for utility in tests/posix/*; do
+	printf '%s: %s: Testing utility.\n' "$0" "$utility"
+	"$utility"
+	printf '\n'
+done

tests/posix/test

@@ -0,0 +1,19 @@
+#!/bin/sh
+
+# 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.
+
+set -e
+
+i=1
+while test -e "$i".test; do
+	printf '%s: %s: Running test...\n' "$0" "$i".test
+	./"$i".test >"$i".result
+	diff 1.expected 1.result
+	printf '%s: %s: Test passed.\n' "$0" "$i".test
+	i="$(printf '%s + %s\n' 1 "$i" | bc)"
+done