From b8766fcef6dcc40bd46584015375ea76518c6201 Mon Sep 17 00:00:00 2001
From: cflip <cflip@cflip.net>
Date: Mon, 19 Sep 2022 21:39:53 -0600
Subject: Improve Makefile build system

Building each source file as a separate object makes it faster to
compile when only changing one source file, and also allows you to
compile with multiple threads when building the whole project.
---
 .gitignore |  8 +++++---
 Makefile   | 29 ++++++++++++++++++++---------
 2 files changed, 25 insertions(+), 12 deletions(-)

diff --git a/.gitignore b/.gitignore
index 58f0b1b..3bfe699 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,4 +1,6 @@
-# Ignore executable binary
-cfws
+# Ignore IDE and editor project files
+.vscode
 
-.vscode
\ No newline at end of file
+# Ignore build output
+cfws
+*.o
diff --git a/Makefile b/Makefile
index c4da138..573c499 100644
--- a/Makefile
+++ b/Makefile
@@ -1,13 +1,24 @@
+CXX=g++
+LD=g++
+
 CFLAGS=-pedantic -Wall --std=c++17
 
-SRC=src/main.cpp \
-    src/CGIScript.cpp \
-    src/ClientConnection.cpp \
-    src/ServerConnection.cpp \
-    src/HttpRequest.cpp \
-    src/HttpResponse.cpp
+OBJS=src/main.o \
+    src/CGIScript.o \
+    src/ClientConnection.o \
+    src/ServerConnection.o \
+    src/HttpRequest.o \
+    src/HttpResponse.o
+
+all: cfws
+
+%.o: %.cpp
+	$(CXX) $< -o $@ -c $(CFLAGS)
+
+cfws: $(OBJS)
+	$(LD) $^ -o $@ $(CFLAGS)
 
-OUT=cfws
+.PHONY: clean
 
-$(OUT): $(SRC)
-	$(CXX) $(CFLAGS) -o $(OUT) $(SRC)
+clean:
+	rm -f $(OBJS) cfws
-- 
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