feat(windows): powershell script w/ link flags

.github/workflows/ci.yml

@@ -26,6 +26,6 @@ jobs:
       - uses: crystal-lang/install-crystal@v1
       - uses: ilammy/msvc-dev-cmd@v1
       - name: Build LuaJIT for Windows
-        run: .\scripts\build_luajit.bat
+        run: .\scripts\build.ps1
       - name: Run tests
-        run: crystal spec
+        run: crystal spec --link-flags="/LIBPATH:$(Get-Location)\ext\luajit"

README.md

@@ -6,11 +6,12 @@ LuaJIT bindings for Crystal
 
 1. Install [LuaJIT](https://luajit.org)
     - [Linux](https://www.google.com/search?q=install+luajit+linux)
-        - Install with package manager
     - [Mac](https://www.google.com/search?q=install+luajit+mac)
-        - Install with brew
+        - `brew install luajit`
     - [Windows](https://www.google.com/search?q=install+luajit+windows)
-        - Run `.\scripts\build_luajit.bat` to clone, build, and install LuaJIT library into `ext/` directory
+        - Execute `.\scripts\build.ps1`
+        - See output for `--link-flags`
+        - Add to crystal commands, e.g. `crystal run --link-flags="/LIBPATH:<absolute location to ext\luajit>" src/example.cr`
 
 2. Add the dependency to your `shard.yml`:
 

scripts/build.ps1

@@ -0,0 +1,45 @@
+$ErrorActionPreference = "Stop"
+
+# Save the current directory
+$currentDir = Get-Location
+
+# Define the LuaJIT extension directory
+$luaExtDir = Join-Path -Path $currentDir -ChildPath "ext\luajit"
+
+# Build LuaJIT unless $luaExtDir\lua51.lib exists
+if (-not (Test-Path -Path "$luaExtDir\lua51.lib")) {
+    # Create a temporary directory
+    $luaDir = New-Item -ItemType Directory -Force -Path ([System.IO.Path]::GetTempPath() + [System.Guid]::NewGuid().ToString())
+
+    # Clone LuaJIT
+    git clone https://github.com/LuaJIT/LuaJIT.git $luaDir
+
+    # Change directory to LuaJIT src
+    Set-Location -Path (Join-Path -Path $luaDir -ChildPath "src")
+
+    # Build LuaJIT (dynamic)
+    .\msvcbuild.bat
+    Rename-Item -Path lua51.lib -NewName lua51-dynamic.lib
+
+    # Build LuaJIT (static)
+    .\msvcbuild.bat static
+
+    # Copy files to $luaExtDir
+    $null = New-Item -ItemType Directory -Force -Path $luaExtDir
+    Copy-Item -Path lua51-dynamic.lib -Destination $luaExtDir
+    Copy-Item -Path lua51.dll -Destination $luaExtDir
+    Copy-Item -Path lua51.lib -Destination $luaExtDir
+
+    # Copy jit.* modules to $luaExtDir\lua\jit
+    $null = New-Item -ItemType Directory -Force -Path "$luaExtDir\lua"
+    Move-Item -Path jit -Destination "$luaExtDir\lua"
+
+    # Return to the original directory
+    Set-Location -Path $currentDir
+
+    # Remove the temporary directory
+    Remove-Item -Path $luaDir -Recurse -Force
+
+    Write-Output "Add the following to any crystal commands:"
+    Write-Output "  --link-flags=/LIBPATH:$luaExtDir"
+}