From 5f95edf690b26c6b9172456261643c7eb2612987 Mon Sep 17 00:00:00 2001
From: chloe caruso <git@paperclover.net>
Date: Mon, 27 May 2024 13:34:48 -0700
Subject: [PATCH] add build script

---
 README.md |  5 ++++-
 build     | 53 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 build.cmd | 29 +++++++++++++++++++++++++++++
 build.zig | 12 +++++++++++-
 4 files changed, 97 insertions(+), 2 deletions(-)
 create mode 100755 build
 create mode 100644 build.cmd

diff --git a/README.md b/README.md
index 0f0fd74ed9af3ab73dd4b7d085668e4fd7ffc320..b8d160e953194d154e353630050120bd37feebed 100644
--- a/README.md
+++ b/README.md
@@ -6,6 +6,10 @@ This language is a mix of features from JavaScript, Rust, and Zig. Some notable
 - **Zig** - Execute any code at compile time, everything is an expression.
 - **JavaScript** - Garbage collected values with a versitile type system.
 
+## Developing
+
+To compile a development build, one can use the provided `./build` or `.\build.cmd` scripts to download Zig and build the compiler. These scripts are effective aliases of `zig build`. A release build can be built by passing the `--release` flag to any of these commands.
+
 ## Standard Library
 
 Currently, there is no standard library. One will be introduced later.
@@ -79,4 +83,3 @@ var number: float = 0; // `number` is `float`
 ```
 
 ## Functions
-
diff --git a/build b/build
new file mode 100755
index 0000000000000000000000000000000000000000..3c2e1a79d588ca1c4ba3e0d7a5a6d723e87f1ab7
--- /dev/null
+++ b/build
@@ -0,0 +1,53 @@
+#!/bin/sh
+# This script will build the compiler on any POSIX system.
+# It automatically installs a Zig compiler to ./zig-cache
+# if needed. The output will be in ./zig-out/bin.
+#
+# `curl` and `tar` is required in order to download and
+# extract Zig, respectively. The rest of the dependencies
+# are downloaded compiled using the Zig build system.
+cd -- "$(dirname -- "$0")"
+
+ZIG_VERSION=$(grep .minimum_zig_version build.zig.zon \
+    | cut -d '"' -f 2)
+
+ZIG="zig-cache/zig/$ZIG_VERSION/zig"
+if [ ! -f "$ZIG" ]; then
+    OS=$(uname -s | tr '[:upper:]' '[:lower:]')
+    if [ "$OS" = "darwin" ]; then
+        OS="macos"
+    fi
+    ARCH=$(uname -m)
+    if [ "$ARCH" = "arm64" ]; then
+        ARCH="aarch64"
+    fi
+
+    URL="https://ziglang.org/builds/zig-$OS-$ARCH-$ZIG_VERSION.tar.xz"
+
+    echo "Installing Zig v$ZIG_VERSION via $URL"
+
+    CURL=$(command -v curl 2>/dev/null)
+    TAR=$(command -v curl 2>/dev/null)
+
+    if [ -z "$CURL" ]; then
+        echo "This script requires 'curl' to be installed."
+    fi
+    if [ -z "$TAR" ]; then
+        echo "This script requires 'tar' to be installed."
+    fi
+
+    if [ -z "$CURL" ] || [ -z "$TAR" ]; then
+        exit 1
+    fi
+
+    mkdir -p zig-cache/zig/$ZIG_VERSION
+    curl -fsSL --retry 3 --retry-delay 3 $URL \
+    | tar -xJ --strip-components=1 -C zig-cache/zig/$ZIG_VERSION
+    if [ "$($ZIG version)" != "$ZIG_VERSION" ]; then
+        echo "Zig failed to install."
+        rm -rf zig-cache/zig/$ZIG_VERSION
+        exit 1
+    fi
+fi
+
+$ZIG build $@
diff --git a/build.cmd b/build.cmd
new file mode 100644
index 0000000000000000000000000000000000000000..07879cf6f0c99cdada497c0caa5fc6fb491beafb
--- /dev/null
+++ b/build.cmd
@@ -0,0 +1,29 @@
+@ECHO OFF
+@REM This script will build the compiler on any Windows system
+@REM It automatically installs a Zig compiler to ./zig-cache
+@REM The output will be in ./zig-out/bin
+
+SET ROOT=%~dp0
+FOR /F "tokens=3 delims=, " %%i IN (
+    'FINDSTR /R "\.minimum_zig_version *= *""".+""",\n" ^
+        "%ROOT%build.zig.zon"'
+) DO SET ZIG_VERSION=%%i
+SET ZIG_VERSION=%ZIG_VERSION:~1,-1%
+IF NOT EXIST "%ROOT%zig-cache\zig\%ZIG_VERSION%\zig.exe" GOTO :find_powershell
+:build
+"%ROOT%zig-cache\zig\%ZIG_VERSION%\zig.exe" build %*
+EXIT /b %ERRORLEVEL%
+:find_powershell
+FOR %%i IN (pwsh powershell) DO WHERE %%i /Q && SET PS=%%i && GOTO :download
+ECHO Powershell not found. Please install it and try again.
+EXIT /b 1
+:download
+SET ZIG_ARCH=x86_64
+SET URI=https://ziglang.org/builds/zig-windows-%ZIG_ARCH%-%ZIG_VERSION%.zip
+SET X=$null = New-Item -ItemType Directory -Force -Path zig-cache\zig
+SET X=%X%;Invoke-RestMethod -Uri %URI% -OutFile zig-cache/zig-%ZIG_VERSION%.zip
+SET X=%X%;Expand-Archive zig-cache/zig-%ZIG_VERSION%.zip -DestinationPath zig-cache/zig
+SET X=%X%;Remove-Item zig-cache/zig-%ZIG_VERSION%.zip
+%PS% -NoProfile -Command "%X%"
+MOVE zig-cache\zig\zig-windows-%ZIG_ARCH%-%ZIG_VERSION% zig-cache\zig\%ZIG_VERSION% >NUL
+GOTO :build
diff --git a/build.zig b/build.zig
index 5bc5f92e3880af4528727e2f504297444d4d227a..a66998bce30b70508240713d6052815013e3e2c3 100644
--- a/build.zig
+++ b/build.zig
@@ -7,7 +7,17 @@ pub fn build(b: *std.Build) void {
     b.reference_trace = 20;
 
     const target = b.standardTargetOptions(.{});
-    const optimize = b.standardOptimizeOption(.{});
+    const optimize_fallback = b.standardOptimizeOption(.{});
+    const optimize: std.builtin.OptimizeMode = switch (b.release_mode) {
+        .off => optimize_fallback,
+        .safe => .ReleaseSafe,
+        .fast => .ReleaseFast,
+        .small => .ReleaseSmall,
+        .any => brk: {
+            b.release_mode = .safe;
+            break :brk .ReleaseSafe;
+        },
+    };
 
     const tracing = b.option(enum {
         none,
-- 
2.54.0