From 18cadd33171fb183779323e35b03bc352d5db376 Mon Sep 17 00:00:00 2001
From: Keyvan Kambakhsh <keyvankambakhsh@gmail.com>
Date: Sat, 7 Dec 2024 02:58:30 +0330
Subject: [PATCH] feat: Use Makefile instead of python build script

---
 .gitignore |  4 +++-
 Makefile   | 41 ++++++++++++++++++++++++++++++++++++-----
 2 files changed, 39 insertions(+), 6 deletions(-)

diff --git a/.gitignore b/.gitignore
index 4c441b5..d0196b7 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,8 +2,10 @@
 out
 out.asm
 output.txt
-/target
+/target1
+/target2
 30cc
+30cc_30cc
 30cc_gcc
 
 # Prerequisites
diff --git a/Makefile b/Makefile
index 1bbe591..8fdc30d 100644
--- a/Makefile
+++ b/Makefile
@@ -1,12 +1,43 @@
 .PHONY=run
 
-CC ?= cc
-CFLAGS := -std=gnu99 -Og -ggdb
+C_FILES := $(filter-out $(wildcard examples/*), $(shell find . -type f -name '*.c' -not -path './examples/*'))
+H_FILES := $(filter-out $(wildcard examples/*), $(shell find . -type f -name '*.h' -not -path './examples/*'))
 
-BIN := a.out
+# Compile 30cc with gcc
+STAGE1_CC ?= cc
+STAGE1_CFLAGS := -std=gnu99 -Og -ggdb
+STAGE1_BIN := ./30cc_gcc
 
-$(BIN): *.h *.c parser/*.c parser/*.h parser/expr/*.c parser/expr/*.h codegen/*.c codegen/*.h preprocess/*.c preprocess/*.h
-	$(CC) $(CFLAGS) *.c parser/*.c codegen/*.c parser/expr/*.c preprocess/*.c
+# Compile 30cc with gcc-generated 30cc
+STAGE2_CC := ./30cc_gcc
+STAGE2_BIN := ./30cc_30cc
+
+# Compile 30cc with 30cc-generated 30cc
+STAGE3_CC := ./30cc_30cc
+STAGE3_BIN := ./30cc
+
+$(STAGE1_BIN): $(H_FILES) $(C_FILES)
+	$(STAGE1_CC) $(STAGE1_CFLAGS) $(C_FILES) -o $(STAGE1_BIN)
+
+$(STAGE2_BIN): $(STAGE1_BIN) **/*.h **/*.c
+	rm -rf target1
+	for file in $(C_FILES) ; do \
+		mkdir -p target1/$$(dirname $${file}); \
+		$(STAGE2_CC) $${file} --asm > target1/$${file}.asm; \
+		nasm -f elf64 target1/$${file}.asm -o target1/$${file}.o; \
+	done
+	ld -dynamic-linker /lib64/ld-linux-x86-64.so.2 -lc -o $(STAGE2_BIN) $$(find target1 -type f -name '*.o')
+	rm -rf target1
+
+$(STAGE3_BIN): $(STAGE2_BIN) **/*.h **/*.c
+	rm -rf target2
+	for file in $(C_FILES) ; do \
+		mkdir -p target2/$$(dirname $${file}); \
+		$(STAGE2_CC) $${file} --asm > target2/$${file}.asm; \
+		nasm -f elf64 target2/$${file}.asm -o target2/$${file}.o; \
+	done
+	ld -dynamic-linker /lib64/ld-linux-x86-64.so.2 -lc -o $(STAGE3_BIN) $$(find target2 -type f -name '*.o')
+	rm -rf target2
 
 run: $(BIN)
 	@./a.out $(program) --asm > out.asm