From ce9079174765a28e00b20d29ce4f5cf05322655b Mon Sep 17 00:00:00 2001
From: Arnau478 <arnauxabia@gmail.com>
Date: Thu, 16 Jun 2022 00:29:13 +0200
Subject: [PATCH] Initial code organization and GCC+binutils toolchain

---
 .gitignore            |  3 +++
 Makefile              |  9 +++++++
 config/toolchain.conf | 15 +++++++++++
 scripts/toolchain.mk  | 61 +++++++++++++++++++++++++++++++++++++++++++
 4 files changed, 88 insertions(+)
 create mode 100644 .gitignore
 create mode 100644 Makefile
 create mode 100644 config/toolchain.conf
 create mode 100644 scripts/toolchain.mk

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..4fa9f61
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,3 @@
+./quark
+build/
+toolchain/
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..cb28362
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,9 @@
+include scripts/toolchain.mk
+
+BUILD_DIR?=build/
+
+quark: build-dir $(BUILD_DIR)/quark
+
+.PHONY: build-dir
+build-dir:
+	@mkdir -p $(BUILD_DIR)
diff --git a/config/toolchain.conf b/config/toolchain.conf
new file mode 100644
index 0000000..db9d102
--- /dev/null
+++ b/config/toolchain.conf
@@ -0,0 +1,15 @@
+# TOOLCHAIN CONFIGURATION FILE
+
+export TARGET = i686-elf
+export TARGET_ASM = nasm
+export TARGET_ASMFLAGS =
+export TARGET_CFLAGS = -std=c99 -g
+export TARGET_CC = $(TARGET)-gcc
+export TARGET_CXX = $(TARGET)-g++
+export TARGET_LD = $(TARGET)-gcc
+export TARGET_LINKFLAGS =
+export TARGET_LIBS =
+BINUTILS_VERSION = 2.37
+BINUTILS_URL = https://ftp.gnu.org/gnu/binutils/binutils-$(BINUTILS_VERSION).tar.xz
+GCC_VERSION = 11.1.0
+GCC_URL = https://ftp.gnu.org/gnu/gcc/gcc-$(GCC_VERSION)/gcc-$(GCC_VERSION).tar.gz
diff --git a/scripts/toolchain.mk b/scripts/toolchain.mk
new file mode 100644
index 0000000..31aa2d8
--- /dev/null
+++ b/scripts/toolchain.mk
@@ -0,0 +1,61 @@
+include config/toolchain.conf
+
+TOOLCHAIN_PREFIX = $(abspath toolchain/$(TARGET))
+export PATH := $(TOOLCHAIN_PREFIX)/bin:$(PATH)
+
+toolchain: toolchain_binutils toolchain_gcc
+
+BINUTILS_SRC = toolchain/binutils-$(BINUTILS_VERSION)
+BINUTILS_BUILD = toolchain/binutils-build-$(BINUTILS_VERSION)
+
+toolchain_binutils: $(TOOLCHAIN_PREFIX)/bin/i686-elf-ld
+
+$(TOOLCHAIN_PREFIX)/bin/i686-elf-ld: $(BINUTILS_SRC).tar.xz
+	cd toolchain && tar -xf binutils-$(BINUTILS_VERSION).tar.xz
+	mkdir $(BINUTILS_BUILD)
+	cd $(BINUTILS_BUILD) && CFLAGS= ASMFLAGS= CC= CXX= LD= ASM= LINKFLAGS= LIBS= ../binutils-$(BINUTILS_VERSION)/configure \
+		--prefix="$(TOOLCHAIN_PREFIX)"	\
+		--target=$(TARGET)				\
+		--with-sysroot					\
+		--disable-nls					\
+		--disable-werror
+	$(MAKE) -j8 -C $(BINUTILS_BUILD)
+	$(MAKE) -C $(BINUTILS_BUILD) install
+
+$(BINUTILS_SRC).tar.xz:
+	mkdir -p toolchain 
+	cd toolchain && wget $(BINUTILS_URL)
+
+
+GCC_SRC = $(abspath toolchain/gcc-$(GCC_VERSION))
+GCC_BUILD = toolchain/gcc-build-$(GCC_VERSION)
+
+toolchain_gcc: $(TOOLCHAIN_PREFIX)/bin/i686-elf-gcc
+
+$(TOOLCHAIN_PREFIX)/bin/i686-elf-gcc: $(TOOLCHAIN_PREFIX)/bin/i686-elf-ld $(GCC_SRC).tar.gz
+	cd toolchain && tar -xf $(GCC_SRC).tar.gz
+	cd toolchain/gcc-$(GCC_VERSION) && ./contrib/download_prerequisites
+	mkdir -p $(GCC_BUILD)
+	cd $(GCC_BUILD) && CFLAGS= ASMFLAGS= CC= CXX= LD= ASM= LINKFLAGS= LIBS= ../gcc-$(GCC_VERSION)/configure \
+		--prefix="$(TOOLCHAIN_PREFIX)" 	\
+		--target=$(TARGET)				\
+		--disable-nls					\
+		--enable-languages=c,c++		\
+		--without-headers
+	$(MAKE) -j8 -C $(GCC_BUILD) all-gcc all-target-libgcc
+	$(MAKE) -C $(GCC_BUILD) install-gcc install-target-libgcc
+	
+$(GCC_SRC).tar.gz:
+	mkdir -p toolchain
+	cd toolchain && wget $(GCC_URL)
+
+#
+# Clean
+#
+clean-toolchain:
+	rm -rf $(GCC_BUILD) $(GCC_SRC) $(BINUTILS_BUILD) $(BINUTILS_SRC)
+
+clean-toolchain-all:
+	rm -rf toolchain/*
+
+.PHONY:  toolchain toolchain_binutils toolchain_gcc clean-toolchain clean-toolchain-all