From 1b498e82be8e54a064743d389d371496f8d6bb5f Mon Sep 17 00:00:00 2001
From: natrixaeria <upezu@student.kit.edu>
Date: Thu, 24 Oct 2019 17:46:14 +0200
Subject: Add init and clean option to build script

---
 kernel/build.sh | 27 ++++++++++++++++++++++++++-
 1 file changed, 26 insertions(+), 1 deletion(-)

diff --git a/kernel/build.sh b/kernel/build.sh
index 069180b..7986ee1 100755
--- a/kernel/build.sh
+++ b/kernel/build.sh
@@ -1,16 +1,36 @@
 #!/usr/bin/sh
 
+remove_target() {
+    rm -rf target &> /dev/null
+}
+
+create_target() {
+    mkdir target &> /dev/null
+    mkdir target/temp &> /dev/null
+}
+
 cleanup_temp() {
-    rm -f target/temp/* 2>&1 > /dev/null
+    rm -f target/temp/* &> /dev/null
 }
 
+# ---------------------------------------------------
+
 build_kernel() {
+    create_target
     nasm -felf64 multiboot_header.asm -o target/temp/multiboot_header.o
     nasm -felf64 boot.asm -o target/temp/boot.o
     ld -n -o target/kernel.bin -T linker.ld target/temp/*.o
     cleanup_temp
 }
 
+build_init() {
+    create_target
+}
+
+build_clean() {
+    remove_target
+}
+
 build_all() {
     build_kernel
 }
@@ -20,6 +40,8 @@ not_exec=true
 for arg in "$@"; do
     case "$arg" in
         "kernel") build_kernel;;
+        "init") build_init;;
+        "clean") build_clean;;
         "all") build_all;;
         *)
             echo "warn: ignoring unknown option '$arg'"
@@ -32,6 +54,9 @@ done
 print_help() {
     echo "usage: $0 option"
     echo "options: "
+    echo "  init          initialise directory"
+    echo "  clean         cleanup binaries"
+    echo
     echo "  kernel        build the kernel"
     echo "  all           build kernel"
 }
-- 
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