From 49a3bb9f30a2d492b20420a504fe4e331eb9f0d0 Mon Sep 17 00:00:00 2001
From: emma <emma@tebibyte.media>
Date: Mon, 15 Jan 2024 15:30:21 -0700
Subject: [PATCH] Makefile, .gitignore, .editorconfig, configure,
 tests/cc-compat.sh: added configure script for compiler optimizations

---
 .editorconfig      |  3 +++
 .gitignore         |  1 +
 Makefile           | 20 +++++++++-----------
 configure          | 39 +++++++++++++++++++++++++++++++++++++++
 tests/cc-compat.sh |  5 +++--
 5 files changed, 55 insertions(+), 13 deletions(-)
 create mode 100755 configure

diff --git a/.editorconfig b/.editorconfig
index 416f893..30fb7fc 100644
--- a/.editorconfig
+++ b/.editorconfig
@@ -6,3 +6,6 @@ end_of_line = lf
 indent_style = tab
 indent_size = 4
 insert_final_newline = true
+
+[configure]
+indent_size = 2
diff --git a/.gitignore b/.gitignore
index edd9d60..3882502 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,3 @@
 build/
 dist/
+*.mk
diff --git a/Makefile b/Makefile
index 871b5ba..951044b 100644
--- a/Makefile
+++ b/Makefile
@@ -1,4 +1,4 @@
-# Copyright (c) 2023 Emma Tebibyte <emma@tebibyte.media>
+# Copyright (c) 2023–2024 Emma Tebibyte <emma@tebibyte.media>
 # Copyright (c) 2023 DTB <trinity@trinity.moe>
 # Copyright (c) 2023 Sasha Koshka <sashakoshka@tebibyte.media>
 # SPDX-License-Identifier: FSFAP
@@ -18,19 +18,17 @@
 PREFIX=/usr/local
 
 CC=cc
-CFLAGS=-O3 -Lbuild/lib -idirafter include
-
 RUSTC=rustc
-RUSTCFLAGS=-Copt-level=z -Ccodegen-units=1 -Cpanic=abort -Clto=y \
-	-Cstrip=symbols -Ctarget-cpu=native \
-	--extern sysexits=build/o/libsysexits.rlib
 
-all: false fop intcmp scrut str strcmp true test
+# to build, first run ./configure
+include *.mk
+
+all: false fop intcmp scrut str strcmp true
 
 build:
 	# keep build/include until bindgen(1) has stdin support
 	# https://github.com/rust-lang/rust-bindgen/issues/2703
-	mkdir -p build/bin build/include build/o # build/lib
+	mkdir -p build/bin build/include build/o build/lib
 
 clean:
 	rm -rf build/ dist/
@@ -65,10 +63,10 @@ sysexits: build
 		| $(RUSTC) $(RUSTCFLAGS) --crate-type lib -o build/o/libsysexits.rlib -
 
 false: src/false.rs build
-	$(RUSTC) $(RUSTCFLAGS) -o build/bin/false src/false.rs
+	$(RUSTC) $(RUSTFLAGS) -o build/bin/false src/false.rs
 
 fop: src/fop.rs build sysexits
-	$(RUSTC) $(RUSTCFLAGS) -o build/bin/fop src/fop.rs
+	$(RUSTC) $(RUSTFLAGS) -o build/bin/fop src/fop.rs
 
 intcmp: src/intcmp.c build
 	$(CC) $(CFLAGS) -o build/bin/intcmp src/intcmp.c
@@ -83,4 +81,4 @@ strcmp: src/strcmp.c build
 	$(CC) $(CFLAGS) -o build/bin/strcmp src/strcmp.c
 
 true: src/true.rs build
-	$(RUSTC) $(RUSTCFLAGS) -o build/bin/true src/true.rs
+	$(RUSTC) $(RUSTFLAGS) -o build/bin/true src/true.rs
diff --git a/configure b/configure
new file mode 100755
index 0000000..eb1c8ae
--- /dev/null
+++ b/configure
@@ -0,0 +1,39 @@
+#!/bin/sh
+
+# Copyright (c) 2023–2024 Emma Tebibyte <emma@tebibyte.media>
+# SPDX-License-Identifier: FSFAP
+#
+# Copying and distribution of this file, with or without modification, are
+# permitted in any medium without royalty provided the copyright notice and this
+# notice are preserved.  This file is offered as-is, without any warranty.
+
+set -e
+
+CFLAGS='-Lbuild/lib -idirafter include -O3'
+RUSTFLAGS='-Copt-level=z -Ccodegen-units=1 -Cpanic=abort -Clto=y \
+	-Cstrip=symbols -Ctarget-cpu=native \
+	--extern sysexits=build/o/libsysexits.rlib'
+
+case "$@" in
+	clang)
+		CFLAGS="$CFLAGS -Wall"
+		;;
+	clean)
+		rm *.mk || true
+		exit 0
+		;;
+	gcc)
+		CFLAGS="$CFLAGS -s -Wl,-z,noseparate-code,-z,nosectionheader -flto"
+		;;
+	'rustc +nightly')
+		RUSTFLAGS="+nightly -Zlocation-detail=none $RUSTFLAGS"
+		;;
+	'') ;;
+	*)
+		printf 'Usage: %s [compiler]\n' "$0"
+		exit 64 # sysexits.h(3) EX_USAGE
+		;;
+esac
+
+printf 'CFLAGS=%s\n' "$CFLAGS" >cc.mk
+printf 'RUSTFLAGS=%s\n' "$RUSTFLAGS" >rustc.mk
diff --git a/tests/cc-compat.sh b/tests/cc-compat.sh
index f6f66ea..b5762c8 100755
--- a/tests/cc-compat.sh
+++ b/tests/cc-compat.sh
@@ -9,18 +9,19 @@
 
 set -e
 
-if ! ls GNUmakefile >/dev/null 2>&1
+if ! ls Makefile >/dev/null 2>&1
 then
 	printf '%s: Run this script in the root of the project.\n' "$0" 1>&2 
 	exit 64 # sysexits.h(3) EX_USAGE
 fi
 
 make clean
+./configure clean
+./configure
 
 for CC in cc \
 	clang \
 	gcc \
-	tcc \
 	'zig cc'
 do
 	export CC