add build run scripts

build_main.sh

@@ -0,0 +1,32 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+cd "$SCRIPT_DIR"
+
+CXX="${CXX:-g++}"
+OUT="${OUT:-main.exe}"
+
+CXXFLAGS=(
+  -std=c++17
+  -O2
+  -Wall
+  -Wextra
+  -pedantic
+)
+
+SOURCES=(
+  main.cpp
+  capture_file_writer.cpp
+  tty_protocol_writer.cpp
+)
+
+LDFLAGS=(
+  -ldl
+  -lutil
+  -lpthread
+)
+
+"$CXX" "${CXXFLAGS[@]}" "${SOURCES[@]}" "${LDFLAGS[@]}" -o "$OUT"
+
+echo "Built $OUT"