modify Makefile to be more in-line with the GNU standard.

Mainly so the makefile is a bit less esoteric to use, debugging flags
must be specified manually.

changed:
- `$RM` for calling `rm`
- removed unused `$ISWIN`
- renamed `test` to `check`
- added `install` and `install-strip` recipes, which for now remain
empty
- added `-g` to `$CFLAGS`, since it helps debugging, and in case of
failures makes bug report less of a headache.

I decided to not modify it further so "specialised tools" don't need to
store files in the git repo, which seemed to complicate logic.
This is the same reason to why I chose to not adapt clean in a way to
introduce `mostlyclean`.

.github/workflows/ci.yaml

@@ -54,4 +54,4 @@ jobs:
         if: steps.cache-deps.outputs.cache-hit != 'true' && runner.os == 'Windows'
 
       - run: make -j all
-      - run: make -j test
+      - run: make -j check

Makefile

@@ -1,36 +1,24 @@
 # Copyright (c) 2025 Quinn
 # Licensed under the MIT Licence. See LICENSE for details
+SHELL = /bin/sh
+.SUFFIXES:
 
-# build configuration, information about the current build process
 NAME    = mcaselector-lite
-DEBUG   ?= 0
-CC      ?= cc
-CMAKE   ?= cmake -G 'Unix Makefiles'
+CC     ?= cc
+RM     ?= rm -vf
+CMAKE  ?= cmake -G 'Unix Makefiles'
 
-# setting default compilation flags
-# some of which are able to be overwritten, others are always appended
-CPPFLAGS ?=
-CFLAGS   ?= -O2 -Wall -Wextra -Wpedantic -Wno-pointer-arith
+CPPFLAGS ?= -DNDEBUG
+CFLAGS   ?= -O2
 LDFLAGS  ?= -flto
-CPPFLAGS += -DGLFW_INCLUDE_NONE
-CFLAGS   += -std=gnu99
-
-# add a few extra flags depending on whether
-# we're debugging or not
-ifeq ($(DEBUG),0)
-CPPFLAGS += -DNDEBUG
-else
-CFLAGS   += -fsanitize=address -ftrapv -g
-LDFLAGS  += -fsanitize=address -ftrapv
-endif
-CPPFLAGS += -Iinclude -Ilib/glad/include -Ilib/glfw/include -Ilib/libarchive/libarchive
+CPPFLAGS += -DGLFW_INCLUDE_NONE -Iinclude -Ilib/glad/include -Ilib/glfw/include -Ilib/libarchive/libarchive
+CFLAGS   += -std=gnu99 -g -Wall -Wextra -Wpedantic -Wno-pointer-arith -MMD -MP
 LDFLAGS  += -Llib/obj/glfw/src -Llib/obj/libarchive/libarchive
 LDLIBS   += -lglfw3 -larchive -lm
 
 # detect if we're compiling on Windows, meaning
 # a lot of things considered "standard" are unavailable.
 ifeq ($(OS),Windows_NT)
-ISWIN = 1
 NAME  := $(NAME).exe
 LDLIBS += -lopengl32 -lgdi32
 $(warning Detected Windows_NT, please refer to the documentation if you encounter issues.)
@@ -38,32 +26,37 @@ else ifeq ($(shell uname -s),Darwin)
 LDLIBS += -framework Cocoa -framework OpenGL -framework IOKit
 endif
 
-# TODO: find a better method to find all source files
 # find all the source files using wildcards
+# TODO: find a better method to find all source files
 # NOTE: MS-DOS and MS-Windows uses backslash `\`, this might break.
 RES  := $(wildcard res/*)
 SRC  := $(wildcard src/*.c src/*/*.c src/*/*/*.c src/*/*/*/*.c src/*/*/*/*/*.c src/*/*/*/*/*/*.c src/*/*/*/*/*/*/*.c src/*/*/*/*/*/*/*/*.c) lib/glad/src/gl.c
-OBJ  := $(SRC:%.c=obj/%.o) $(RES:%=obj/%.o)
 TSRC := $(wildcard test/*.c test/*/*.c test/*/*/*.c test/*/*/*/*.c test/*/*/*/*/*.c test/*/*/*/*/*/*.c test/*/*/*/*/*/*/*.c test/*/*/*/*/*/*/*/*.c)
-TOBJ := $(TSRC:%.c=obj/%.o)
+
+OBJ  := $(RES:%=obj/%.o) $(SRC:%.c=obj/%.o)
+TOBJ  := $(TSRC:%.c=obj/%.o)
 
 # TODO: potentially automatically detect whether we should compile libs, or if we can just go ahead.
-.PHONY: all libs test clean clean-libs
+
+.PHONY: all libs check clean clean-libs
 all: bin/$(NAME)
 libs: lib/obj/glfw/ lib/obj/libarchive/
-test: bin/TEST_$(NAME); bin/TEST_$(NAME)
-clean:
-ifneq ($(wildcard bin/),)
-	rm -vr bin/
-endif
-ifneq ($(wildcard obj/),)
-	rm -vr obj/
-endif
-clean-libs:
-ifneq ($(wildcard lib/obj/),)
-	rm -vr lib/obj/
+check: bin/TEST_$(NAME); ./$<
+clean:;      @-$(RM) -r bin/ obj/
+clean-libs:; @-$(RM) -r lib/obj/
+
+.PHONY:
+install: all
+ifneq ($(OS),Windows_NT)
+	# TODO: POSIX-compliant installation
+else
+	# TODO: WINDOWS_NT installation
 endif
 
+.PHONY:
+install-strip: install
+	# TODO: strip the produced installation
+
 # compiles the libraries using cmake
 lib/obj/%/: lib/%/
 	$(CMAKE) -S $< -B $@
@@ -86,17 +79,18 @@ obj/res/%.c: res/%
 	@mkdir -p $(@D)
 	@cd res/ && xxd -i $(patsubst res/%,%,$<) $(abspath $@)
 
-obj/res/%.o: obj/res/%.c
+obj/%.o: %.c
 	$(info [CC]	$@)
 	@mkdir -p $(@D)
 	@$(CC) -c $(CPPFLAGS) $(CFLAGS) -o $@ $<
 
-obj/%.o: %.c
+obj/%.o: obj/%.c
 	$(info [CC]	$@)
 	@mkdir -p $(@D)
-	@$(CC) -c $(CPPFLAGS) $(CFLAGS) -MMD -MP -o $@ $<
+	@$(CC) -c $(CPPFLAGS) $(CFLAGS) -o $@ $<
 
 # Include the generated dependency files.
 # Which creates rules for all dependencies,
 # as a result updating an .o file when a .h is updated.
 -include $(OBJ:%.o=%.d)
+-include $(TOBJ:%.o=%.d)