init

scripts/build.bat

@@ -0,0 +1,43 @@
+@echo off
+setlocal
+
+if not exist build mkdir build
+
+where cl >nul 2>nul
+if %errorlevel% equ 0 goto build_msvc
+
+where gcc >nul 2>nul
+if %errorlevel% equ 0 goto build_gcc
+
+where clang >nul 2>nul
+if %errorlevel% equ 0 goto build_clang
+
+echo C compiler not found. Install Visual Studio Build Tools, GCC, or Clang.
+exit /b 1
+
+:build_msvc
+pushd build
+cl /nologo /std:c11 /O2 /W4 /I..\include ^
+  ..\src\main.c ..\src\encrypt.c ..\src\decrypt.c ..\src\cipher.c ^
+  /Fe:gerbera.exe bcrypt.lib
+set "result=%errorlevel%"
+popd
+if not %result% equ 0 exit /b %result%
+goto success
+
+:build_gcc
+gcc -Iinclude -std=c11 -O2 -Wall -Wextra -Wpedantic ^
+  src\main.c src\encrypt.c src\decrypt.c src\cipher.c ^
+  -o build\gerbera.exe -lbcrypt
+if not %errorlevel% equ 0 exit /b %errorlevel%
+goto success
+
+:build_clang
+clang -Iinclude -std=c11 -O2 -Wall -Wextra -Wpedantic ^
+  src\main.c src\encrypt.c src\decrypt.c src\cipher.c ^
+  -o build\gerbera.exe -lbcrypt
+if not %errorlevel% equ 0 exit /b %errorlevel%
+
+:success
+echo Build complete: build\gerbera.exe
+exit /b 0

scripts/build.sh

@@ -0,0 +1,20 @@
+#!/bin/sh
+set -eu
+
+compiler="${CC:-cc}"
+
+mkdir -p build
+"$compiler" \
+    -Iinclude \
+    -std=c11 \
+    -O2 \
+    -Wall \
+    -Wextra \
+    -Wpedantic \
+    src/main.c \
+    src/encrypt.c \
+    src/decrypt.c \
+    src/cipher.c \
+    -o build/gerbera
+
+echo "Build complete: build/gerbera"