bootstrap: update build configsHEADmaster

Update the build configuration files for the included bootloader to
match the formatting requirements of the main build configs.

Signed-off-by: Danny Holman <dholman@gymli.org>

16 files changed, 249 insertions, 208 deletions

diff --git a/.gitignore b/.gitignore
index 37520e2..4085e24 100644
--- a/.gitignore
+++ b/.gitignore
@@ -6,11 +6,13 @@
 *.c.*
 *.d
 *.dwo
+*.efi
 *.elf
 *.gz
 *.i
 *.img
 *.iso
+*.lib
 *.ll
 *.lst
 *.lzma
@@ -40,6 +42,8 @@ bin/pwd/pwd
 bin/sh/sh
 bin/su/su
 bin/touch/touch
+bootstrap/stage1/bootstrap-stage1
+bootstrap/stage2/bootstrap-stage2
 kernel/vmbox
 sbin/init/init
 sbin/mknod/mknod
diff --git a/Makefile b/Makefile
index d66b8ba..24b4834 100644
--- a/Makefile
+++ b/Makefile
@@ -1,69 +1,36 @@
+# Copyright (C) 2025 Danny Holman <dholman@gymli.org>
+# 
+# This file is part of BoxOS, a free and open-source Unix-like operating
+# system.
+# 
+# BoxOS is free software; you can redistribute it and/or modify under the
+# terms of the GNU General Public License as published by the Free Software
+# Foundation; either version 2 of the License, or (at your option) any later
+# version.
+# 
+# BoxOS is distributed in the hope it will be useful, but WITHOUT ANY WARRANTY;
+# without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE. See the GNU General Public License for more details.
+# 
+# You should have received a copy of the GNU General Public License along with
+# BoxOS; if not, see <https://www.gnu.org/licenses/>.
+
 VERSION:=$(shell git describe --abbrev=4 --dirty --always --tags)
 ROOTDIR:=$(shell dirname $(realpath $(firstword $(MAKEFILE_LIST))))/
-SYS_INCLUDE:=-I$(ROOTDIR)include
+
 include build.conf
-export ARCH VERSION ROOTDIR DESTDIR SYS_INCLUDE CC LD
+VERSION:=$(addsuffix $(LOCAL_VER), $(VERSION))
+export VERSION ROOTDIR DESTDIR
 
 SUBDIRS:=bootstrap \
-	 kernel \
 
-.PHONY: all clean modules install install-headers $(SUBDIRS)
+.PHONY: all clean install $(SUBDIRS)
 
 all: $(SUBDIRS)
 
-subdirs: $(SUBDIRS)
-
 $(SUBDIRS):
 	$(MAKE) -j $(JOBS) $(MAKECMDGOALS) -C $@
 
 clean: $(SUBDIRS)
-	$(RM) -r $(DESTDIR) $(DESTDIR).tar.zst
-
-create-basedir:
-	install -d -m 0755 $(DESTDIR)
-	install -d -m 0755 $(DESTDIR)/bin
-	install -d -m 0755 $(DESTDIR)/boot
-	install -d -m 0755 $(DESTDIR)/etc
-	install -d -m 0755 $(DESTDIR)/home
-	install -d -m 0755 $(DESTDIR)/lib
-	install -d -m 0755 $(DESTDIR)/mnt
-	install -d -m 0755 $(DESTDIR)/opt
-	install -d -m 0755 $(DESTDIR)/proc
-	install -d -m 0755 $(DESTDIR)/root
-	install -d -m 0755 $(DESTDIR)/sbin
-	install -d -m 0755 $(DESTDIR)/tmp
-	install -d -m 0755 $(DESTDIR)/usr
-	install -d -m 0755 $(DESTDIR)/usr/bin
-	install -d -m 0755 $(DESTDIR)/usr/include
-	install -d -m 0755 $(DESTDIR)/usr/lib
-	install -d -m 0755 $(DESTDIR)/usr/local
-	install -d -m 0755 $(DESTDIR)/usr/local/bin
-	install -d -m 0755 $(DESTDIR)/usr/local/include
-	install -d -m 0755 $(DESTDIR)/usr/local/man
-	install -d -m 0755 $(DESTDIR)/usr/local/sbin
-	install -d -m 0755 $(DESTDIR)/usr/local/share
-	install -d -m 0755 $(DESTDIR)/usr/local/src
-	install -d -m 0755 $(DESTDIR)/usr/sbin
-	install -d -m 0755 $(DESTDIR)/usr/share
-	install -d -m 0755 $(DESTDIR)/usr/src
-	install -d -m 0755 $(DESTDIR)/var
-	install -d -m 0755 $(DESTDIR)/var/cache
-	install -d -m 0755 $(DESTDIR)/var/lib
-	install -d -m 0755 $(DESTDIR)/var/lock
-	install -d -m 0755 $(DESTDIR)/var/log
-	install -d -m 0755 $(DESTDIR)/var/run
-	install -d -m 0755 $(DESTDIR)/var/tmp
-
-install: create-basedir subdirs
-	cp -R etc/* $(DESTDIR)/etc
-	cp -R usr.share/* $(DESTDIR)/usr/share
-	tar -cvf $(DESTDIR).tar $(DESTDIR)
-	zstd $(DESTDIR).tar
-	$(RM) -r $(DESTDIR) $(DESTDIR).tar
-
-install-headers: subdirs
-	cp -R include/* $(DESTDIR)/usr/include
-
-install-kernel: subdirs
 
-install-modules: subdirs
+install: $(SUBDIRS)
diff --git a/README.md b/README.md
index 55263a8..11314ae 100644
--- a/README.md
+++ b/README.md
@@ -3,16 +3,14 @@
 Box is a simple Unix-like operating system that runs on the x86_64
 architecture. It is written in C with a small portion written in assembly. The
 kernel, user space and bootstrap loader are all written under the terms of the
-GNU General Public License v2. The POSIX-UEFI library that the bootstrap loader
-builds against can be found [here](https://gitlab.com/bztsrc/posix-uefi) and is
-released under the terms of the MIT License.
+GNU General Public License v2.
 
 ## Compiling
 
 You will need the following to compile the Box kernel:
 
 * A working Unix environment
-* An x86_64-elf cross compiler
+* A working copy of the clang compiler
 
 ## Copyright
 
diff --git a/bootstrap/Makefile b/bootstrap/Makefile
index 92f4c3e..665a26d 100644
--- a/bootstrap/Makefile
+++ b/bootstrap/Makefile
@@ -1,16 +1,38 @@
+# Copyright (C) 2025 Danny Holman <dholman@gymli.org>
+# 
+# This file is part of BoxOS, a free and open-source Unix-like operating
+# system.
+# 
+# BoxOS is free software; you can redistribute it and/or modify under the
+# terms of the GNU General Public License as published by the Free Software
+# Foundation; either version 2 of the License, or (at your option) any later
+# version.
+# 
+# BoxOS is distributed in the hope it will be useful, but WITHOUT ANY WARRANTY;
+# without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE. See the GNU General Public License for more details.
+# 
+# You should have received a copy of the GNU General Public License along with
+# BoxOS; if not, see <https://www.gnu.org/licenses/>.
+
+include $(ROOTDIR)/build.conf
+
+ifeq ($(BS_DEBUG),YES)
+	AFLAGS+=-g
+	CFLAGS+=-g
+endif
+
+export VERSION ROOTDIR DESTDIR AFLAGS CFLAGS
+
 SUBDIRS:=stage1 \
 	 stage2 \
 
-export ARCH VERSION DESTDIR SYS_INCLUDE
-
-.PHONY: all clean $(SUBDIRS)
+.PHONY: all clean install $(SUBDIRS)
 
 all: $(SUBDIRS)
 
-subdirs: $(SUBDIRS)
-
 $(SUBDIRS):
-	$(MAKE) $(MAKECMDGOALS) -C $@
+	$(MAKE) -j $(JOBS) $(MAKECMDGOALS) -C $@
 
 clean: $(SUBDIRS)
 
diff --git a/bootstrap/stage1/Makefile b/bootstrap/stage1/Makefile
index b09f1ad..7c3bf81 100644
--- a/bootstrap/stage1/Makefile
+++ b/bootstrap/stage1/Makefile
@@ -1,16 +1,57 @@
-SUBDIRS:=efi \
+# Copyright (C) 2025 Danny Holman <dholman@gymli.org>
+# 
+# This file is part of BoxOS, a free and open-source Unix-like operating
+# system.
+# 
+# BoxOS is free software; you can redistribute it and/or modify under the
+# terms of the GNU General Public License as published by the Free Software
+# Foundation; either version 2 of the License, or (at your option) any later
+# version.
+# 
+# BoxOS is distributed in the hope it will be useful, but WITHOUT ANY WARRANTY;
+# without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE. See the GNU General Public License for more details.
+# 
+# You should have received a copy of the GNU General Public License along with
+# BoxOS; if not, see <https://www.gnu.org/licenses/>.
 
-export ARCH VERSION DESTDIR SYS_INCLUDE
+include $(ROOTDIR)/common.mk
 
-.PHONY: all clean $(SUBDIRS)
+INCLUDE+=-I$(ARCHDIR)/include -Iinclude -I$(ROOTDIR)kernel/include -I$(ROOTDIR)kernel/arch/$(ARCH)/include
+CFLAGS+=-ffreestanding -fno-stack-protector $(BS_OPLVL)
 
-all: $(SUBDIRS)
+BINARY=bootstrap-stage1
 
-subdirs: $(SUBDIRS)
+include $(ARCHDIR)/make.conf
+FIRMWARE_DIR=firmware/$(FIRMWARE)
+include $(FIRMWARE_DIR)/make.conf
+COMMON_DIR=firmware/common
 
-$(SUBDIRS):
-	$(MAKE) $(MAKECMDGOALS) -C $@
+COMMON_OBJS=$(COMMON_DIR)/bprintf.o \
+	    $(COMMON_DIR)/elf_load.o \
+	    $(COMMON_DIR)/exception.o \
+	    $(COMMON_DIR)/rescue.o \
+	    $(COMMON_DIR)/string.o \
 
-clean: $(SUBDIRS)
+OBJS=$(ARCH_OBJS) \
+     $(COMMON_OBJS) \
+     $(FIRMWARE_OBJS) \
 
-install: $(SUBDIRS)
+.PHONY: all clean install
+
+all: $(BINARY)
+
+$(BINARY): $(OBJS)
+	@$(LD) $(LDFLAGS) $^
+
+%.o: %.c
+	@$(CC) -MD -c $< -o $@ $(CFLAGS) $(INCLUDE)
+	@echo [CC] $@
+
+%.o: %.s
+	@$(CC) -c $< -o $@ $(AFLAGS) $(INCLUDE)
+
+clean:
+	$(RM) $(BINARY) $(OBJS) $(OBJS:.o=.d)
+
+-include $(OBJS:.o=.d)
diff --git a/bootstrap/stage1/arch/x86_64/efi/entry.s b/bootstrap/stage1/arch/x86_64/efi/entry.s
deleted file mode 100644
index 411a9b2..0000000
--- a/bootstrap/stage1/arch/x86_64/efi/entry.s
+++ /dev/null
@@ -1,25 +0,0 @@
-/*
- * Copyright (C) 2025 Danny Holman <dholman@gymli.org>
- *
- * This file is part of BoxOS, a free and open-source Unix-like operating
- * system.
- *
- * BoxOS is free software; you can redistribute it and/or modify under the
- * terms of the GNU General Public License as published by the Free Software
- * Foundation; either version 2 of the License, or (at your option) any later
- * version.
- *
- * BoxOS is distributed in the hope it will be useful, but WITHOUT ANY WARRANTY;
- * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
- * PARTICULAR PURPOSE. See the GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License along with
- * BoxOS; if not, see <https://www.gnu.org/licenses/>.
- */
-
-.section .text
-
-.global _uefi_start
-_uefi_start:
-        call efi_main
-        ret
diff --git a/bootstrap/stage1/arch/x86_64/efi/make.config b/bootstrap/stage1/arch/x86_64/efi/make.config
deleted file mode 100644
index eea15d2..0000000
--- a/bootstrap/stage1/arch/x86_64/efi/make.config
+++ /dev/null
@@ -1,5 +0,0 @@
-STAGE1_ARCH_INCLUDE=-I$(ARCHDIR)/include
-STAGE1_ARCH_CFLAGS=-target x86_64-pc-win32-coff
-STAGE1_ARCH_LDFLAGS=
-
-STAGE1_ARCH_OBJS=$(ARCHDIR)/entry.o \
diff --git a/bootstrap/stage1/arch/x86_64/make.conf b/bootstrap/stage1/arch/x86_64/make.conf
new file mode 100644
index 0000000..ec364c7
--- /dev/null
+++ b/bootstrap/stage1/arch/x86_64/make.conf
@@ -0,0 +1,27 @@
+# Copyright (C) 2025 Danny Holman <dholman@gymli.org>
+# 
+# This file is part of BoxOS, a free and open-source Unix-like operating
+# system.
+# 
+# BoxOS is free software; you can redistribute it and/or modify under the
+# terms of the GNU General Public License as published by the Free Software
+# Foundation; either version 2 of the License, or (at your option) any later
+# version.
+# 
+# BoxOS is distributed in the hope it will be useful, but WITHOUT ANY WARRANTY;
+# without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE. See the GNU General Public License for more details.
+# 
+# You should have received a copy of the GNU General Public License along with
+# BoxOS; if not, see <https://www.gnu.org/licenses/>.
+
+INCLUDE+=-I$(ARCHDIR)/include
+AFLAGS+=-target $(ARCH)-pc-win32-coff
+CFLAGS+=-mno-red-zone -mno-mmx -mno-sse -mno-sse2 -target $(ARCH)-pc-win32-coff
+LDFLAGS+=-entry:_start
+
+ARCH_OBJS=$(ARCHDIR)/asm/entry.o \
+          $(ARCHDIR)/asm/__chkstk.o \
+          $(ARCHDIR)/asm/paging.o \
+          $(ARCHDIR)/paging.o \
+          $(ARCHDIR)/serial.o \
diff --git a/bootstrap/stage1/efi/Makefile b/bootstrap/stage1/efi/Makefile
deleted file mode 100644
index b1a96ef..0000000
--- a/bootstrap/stage1/efi/Makefile
+++ /dev/null
@@ -1,49 +0,0 @@
-INCLUDE?=-I$(ROOTDIR)kernel/arch/$(ARCH)/include
-CFLAGS?=-O0 -fno-stack-protector -ffreestanding -fno-builtin -nostdinc -nostdlib
-LDFLAGS?=-subsystem:efi_application -entry:_uefi_start
-
-# -- Do not edit below this line --
-
-LD:=lld-link
-INCLUDE:=$(INCLUDE) $(SYS_INCLUDE)
-CFLAGS:=$(CFLAGS) -Wall -Wextra -DVERSION=\"$(VERSION)\" -DARCH=\"$(ARCH)\" -g
-LDFLAGS:=$(LDFLAGS)
-ARCH:=$(ARCH)
-EFI:=boot-stage1.efi
-
-ARCHDIR=../arch/$(ARCH)/efi
-
-include $(ARCHDIR)/make.config
-
-INCLUDE:=$(INCLUDE) $(STAGE1_ARCH_INCLUDE)
-CFLAGS:=$(CFLAGS) $(STAGE1_ARCH_CFLAGS)
-LDFLAGS:=$(LDFLAGS) $(STAGE1_ARCH_LDFLAGS)
-
-OBJS=$(STAGE1_ARCH_OBJS) \
-     efi.o \
-
-.PHONY: all clean install
-.SUFFIXES: .o .c .s
-
-all: $(EFI)
-
-$(EFI): $(OBJS)
-	@$(LD) $(LDFLAGS) -out:$@ $^
-	@echo [LD] $@
-
-.c.o:
-	@$(CC) -MD -c $< -o $@ $(CFLAGS) $(INCLUDE) -DVERSION=\"$(VERSION)\"
-	@echo [CC] $@
-
-.s.o:
-	@$(CC) -MD -c $< -o $@ $(CFLAGS) $(INCLUDE) -DVERSION=\"$(VERSION)\"
-	@echo [AS] $@
-
-clean:
-	$(RM) $(EFI) $(EFI:.efi=.lib) $(OBJS) $(OBJS:.o=.d)
-
-install: $(EFI)
-	mkdir -p $(DESTDIR)$(BOOTDIR)
-	install -m 0755 $(EFI) $(DESTDIR)$(BOOTDIR)/$(EFI)
-
--include $(OBJS:.o=.d)
diff --git a/bootstrap/stage1/firmware/efi/make.conf b/bootstrap/stage1/firmware/efi/make.conf
new file mode 100644
index 0000000..3b1615e
--- /dev/null
+++ b/bootstrap/stage1/firmware/efi/make.conf
@@ -0,0 +1,14 @@
+LD:=lld-link
+
+ifeq (BS_DEBUG,YES)
+	AFLAGS+=-gcodeview
+	CFLAGS+=-gcodeview
+endif
+
+CFLAGS+=-fshort-wchar
+LDFLAGS+=-subsystem:efi_application -out:$(BINARY)
+
+FIRMWARE_OBJS=$(FIRMWARE_DIR)/efi.o \
+              $(FIRMWARE_DIR)/bs_alloc.o \
+              $(FIRMWARE_DIR)/tty.o \
+              $(FIRMWARE_DIR)/util.o \
diff --git a/bootstrap/stage2/Makefile b/bootstrap/stage2/Makefile
index 938b5e8..2b3951d 100644
--- a/bootstrap/stage2/Makefile
+++ b/bootstrap/stage2/Makefile
@@ -1,48 +1,34 @@
-INCLUDE?=-Iinclude -I$(ROOTDIR)kernel/arch/$(ARCH)/include
-CFLAGS?=-O0 -ffreestanding -std=gnu11 -fno-stack-protector
-LDFLAGS?=-nostdlib
-
-# -- Do not edit below this line --
-
-INCLUDE:=$(INCLUDE) $(SYS_INCLUDE)
-CFLAGS:=$(CFLAGS) -Wall -Wextra -DVERSION=\"$(VERSION)\" -DARCH=\"$(ARCH)\" -g
-LDFLAGS:=$(LDFLAGS)
-ARCH:=$(ARCH)
-ELF:=boot-stage2
-
-ARCHDIR=arch/$(ARCH)
-
-include $(ARCHDIR)/make.config
-
-INCLUDE:=$(INCLUDE) $(STAGE2_ARCH_INCLUDE)
-CFLAGS:=$(CFLAGS) $(STAGE2_ARCH_CFLAGS)
-LDFLAGS:=$(LDFLAGS) $(STAGE2_ARCH_LDFLAGS)
-
-OBJS=$(STAGE2_ARCH_OBJS) \
-     init/init.o \
-     drivers/sata/sata.o \
-
-.PHONY: all clean install
-.SUFFIXES: .o .c .s
-
-all: $(ELF)
-
-$(ELF): $(OBJS)
-	@$(LD) --script=$(ARCHDIR)/linker.ld $(LDFLAGS) -o $@ $^
-	@echo [LD] $@
-
-.c.o:
-	@$(CC) -MD -c $< -o $@ $(CFLAGS) $(INCLUDE)
-	@echo [CC] $@
-
-.s.o:
-	@$(CC) -MD -c $< -o $@ $(CFLAGS) $(INCLUDE)
-	@echo [AS] $@
-
-clean:
-	$(RM) $(ELF) $(OBJS) $(OBJS:.o=.d)
-
-install: $(ELF)
-	install -m 0644 $(ELF) $(DESTDIR)$(BOOTDIR)
-
--include $(OBJS:.o=.d)
+# Copyright (C) 2025 Danny Holman <dholman@gymli.org>
+# 
+# This file is part of BoxOS, a free and open-source Unix-like operating
+# system.
+# 
+# BoxOS is free software; you can redistribute it and/or modify under the
+# terms of the GNU General Public License as published by the Free Software
+# Foundation; either version 2 of the License, or (at your option) any later
+# version.
+# 
+# BoxOS is distributed in the hope it will be useful, but WITHOUT ANY WARRANTY;
+# without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE. See the GNU General Public License for more details.
+# 
+# You should have received a copy of the GNU General Public License along with
+# BoxOS; if not, see <https://www.gnu.org/licenses/>.
+
+include $(ROOTDIR)/common.mk
+
+ifeq (BS_DEBUG,YES)
+	AFLAGS+=-g
+	CFLAGS+=-g
+endif
+
+INCLUDE+=-Iinclude -I$(ROOTDIR)kernel/include
+CFLAGS+=-ffreestanding -fno-stack-protector $(BS_OPLVL)
+
+BINARY=bootstrap-stage2
+
+include $(ARCHDIR)/make.conf
+
+OBJS=$(ARCH_OBJS) \
+
+include $(ROOTDIR)/patterns.mk
diff --git a/bootstrap/stage2/arch/x86_64/linker.ld b/bootstrap/stage2/arch/x86_64/linker.ld
index 04b6148..7bd0460 100644
--- a/bootstrap/stage2/arch/x86_64/linker.ld
+++ b/bootstrap/stage2/arch/x86_64/linker.ld
@@ -1,4 +1,4 @@
-ENTRY(bootstrap_main)
+ENTRY(_start)
 
 SECTIONS {
         . = 0x2000;
diff --git a/bootstrap/stage2/arch/x86_64/make.conf b/bootstrap/stage2/arch/x86_64/make.conf
new file mode 100644
index 0000000..930b95e
--- /dev/null
+++ b/bootstrap/stage2/arch/x86_64/make.conf
@@ -0,0 +1,5 @@
+AFLAGS+=-target $(ARCH)-none-elf
+CFLAGS+=-target $(ARCH)-none-elf -mno-red-zone -mno-mmx -mno-sse -mno-sse2
+LDFLAGS+=--script=$(ARCHDIR)/linker.ld
+
+ARCH_OBJS=$(ARCHDIR)/asm/entry.o \
diff --git a/bootstrap/stage2/arch/x86_64/make.config b/bootstrap/stage2/arch/x86_64/make.config
deleted file mode 100644
index 3c73a35..0000000
--- a/bootstrap/stage2/arch/x86_64/make.config
+++ /dev/null
@@ -1,6 +0,0 @@
-STAGE2_ARCH_INCLUDE=-I$(ARCHDIR)/include
-STAGE2_ARCH_CFLAGS=-target x86_64-pc-none-elf -mno-red-zone -mno-mmx -mno-sse -mno-sse2
-STAGE2_ARCH_LDFLAGS=
-STAGE2_ARCH_LIBS=
-
-STAGE2_ARCH_OBJS=
diff --git a/common.mk b/common.mk
new file mode 100644
index 0000000..0b816ed
--- /dev/null
+++ b/common.mk
@@ -0,0 +1,26 @@
+# Copyright (C) 2025 Danny Holman <dholman@gymli.org>
+# 
+# This file is part of BoxOS, a free and open-source Unix-like operating
+# system.
+# 
+# BoxOS is free software; you can redistribute it and/or modify under the
+# terms of the GNU General Public License as published by the Free Software
+# Foundation; either version 2 of the License, or (at your option) any later
+# version.
+# 
+# BoxOS is distributed in the hope it will be useful, but WITHOUT ANY WARRANTY;
+# without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE. See the GNU General Public License for more details.
+# 
+# You should have received a copy of the GNU General Public License along with
+# BoxOS; if not, see <https://www.gnu.org/licenses/>.
+
+include $(ROOTDIR)/build.conf
+
+INCLUDE+=-I$(ROOTDIR)include
+AFLAGS+=-Wall -Wextra -target $(ARCH)-none-elf
+CFLAGS+=-Wall -Wextra -std=$(C_VER) -DARCH=\"$(ARCH)\" -DVERSION=\"$(VERSION)\" -target $(ARCH)-none-elf
+LDFLAGS+=
+LIBS+=
+
+ARCHDIR=arch/$(ARCH)
diff --git a/patterns.mk b/patterns.mk
new file mode 100644
index 0000000..1a6b2ce
--- /dev/null
+++ b/patterns.mk
@@ -0,0 +1,36 @@
+# Copyright (C) 2025 Danny Holman <dholman@gymli.org>
+# 
+# This file is part of BoxOS, a free and open-source Unix-like operating
+# system.
+# 
+# BoxOS is free software; you can redistribute it and/or modify under the
+# terms of the GNU General Public License as published by the Free Software
+# Foundation; either version 2 of the License, or (at your option) any later
+# version.
+# 
+# BoxOS is distributed in the hope it will be useful, but WITHOUT ANY WARRANTY;
+# without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE. See the GNU General Public License for more details.
+# 
+# You should have received a copy of the GNU General Public License along with
+# BoxOS; if not, see <https://www.gnu.org/licenses/>.
+
+.PHONY: all clean install
+
+all: $(BINARY)
+
+$(BINARY): $(OBJS)
+	@$(LD) $(LDFLAGS) $^ -o $@
+	@echo [LD] $@
+
+%.o: %.c
+	@$(CC) -MD -c $< -o $@ $(CFLAGS) $(INCLUDE)
+	@echo [CC] $@
+
+%.o: %.s
+	@$(CC) -c $< -o $@ $(AFLAGS) $(INCLUDE)
+
+clean:
+	$(RM) $(BINARY) $(OBJS) $(OBJS:.o=.d) $(OBJS:.o=.gcno)
+
+-include $(OBJS:.o=.d)