diff --git a/build.ps1 b/build.ps1
index dde7a87..9576dc2 100644
--- a/build.ps1
+++ b/build.ps1
@@ -1,13 +1,32 @@
-# Hysteria local build script for Windows (PowerShell)
+# Hysteria build script for Windows (PowerShell)
 
-$platforms = @("windows/amd64", "linux/amd64", "darwin/amd64")
-$ldflags = "-s -w"
+# Environment variable options:
+#   - HY_APP_VERSION: App version
+#   - HY_APP_COMMIT: App commit hash
+#   - HY_APP_PLATFORMS: Platforms to build for (e.g. "windows/amd64,linux/amd64,darwin/amd64")
 
 if (!(Get-Command go -ErrorAction SilentlyContinue)) {
     Write-Host "Error: go is not installed." -ForegroundColor Red
     exit 1
 }
 
+$ldflags = "-s -w -X 'main.appDate=$(Get-Date -Format "yyyy-MM-dd HH:mm:ss")'"
+if ($env:HY_APP_VERSION) {
+    $ldflags += " -X 'main.appVersion=$($env:HY_APP_VERSION)'"
+}
+if ($env:HY_APP_COMMIT) {
+    $ldflags += " -X 'main.appCommit=$($env:HY_APP_COMMIT)'"
+}
+
+if ($env:HY_APP_PLATFORMS) {
+    $platforms = $env:HY_APP_PLATFORMS.Split(",")
+}
+else {
+    $goos = go env GOOS
+    $goarch = go env GOARCH
+    $platforms = @("$goos/$goarch")
+}
+
 if (Test-Path build) {
     Remove-Item -Recurse -Force build
 }
@@ -23,7 +42,11 @@ foreach ($platform in $platforms) {
     if ($env:GOOS -eq "windows") {
         $output = "$output.exe"
     }
-    go build -o $output -ldflags $ldflags ./cmd/
+    go build -o $output -tags=gpl -ldflags $ldflags -trimpath ./cmd/
+    if ($LastExitCode -ne 0) {
+        Write-Host "Error: failed to build $env:GOOS/$env:GOARCH" -ForegroundColor Red
+        exit 1
+    }
 }
 
 Write-Host "Build complete." -ForegroundColor Green
diff --git a/build.sh b/build.sh
index af1646c..d266b40 100755
--- a/build.sh
+++ b/build.sh
@@ -1,16 +1,29 @@
 #!/bin/bash
 
-# Hysteria local build script for Linux
-
-# Change these to whatever you want
-platforms=("windows/amd64" "linux/amd64" "darwin/amd64")
-ldflags="-s -w"
+# Hysteria build script for Linux
+# Environment variable options:
+#   - HY_APP_VERSION: App version
+#   - HY_APP_COMMIT: App commit hash
+#   - HY_APP_PLATFORMS: Platforms to build for (e.g. "windows/amd64,linux/amd64,darwin/amd64")
 
 if ! [ -x "$(command -v go)" ]; then
     echo 'Error: go is not installed.' >&2
     exit 1
 fi
 
+ldflags="-s -w -X 'main.appDate=$(date -u '+%F %T')'"
+if [ -n "$HY_APP_VERSION" ]; then
+    ldflags="$ldflags -X 'main.appVersion=$HY_APP_VERSION'"
+fi
+if [ -n "$HY_APP_COMMIT" ]; then
+    ldflags="$ldflags -X 'main.appCommit=$HY_APP_COMMIT'"
+fi
+
+if [ -z "$HY_APP_PLATFORMS" ]; then
+    HY_APP_PLATFORMS="$(go env GOOS)/$(go env GOARCH)"
+fi
+platforms=(${HY_APP_PLATFORMS//,/ })
+
 mkdir -p build
 rm -rf build/*
 
@@ -24,7 +37,11 @@ for platform in "${platforms[@]}"; do
     if [ $GOOS = "windows" ]; then
         output="$output.exe"
     fi
-    env GOOS=$GOOS GOARCH=$GOARCH go build -o $output -ldflags "$ldflags" ./cmd/
+    env GOOS=$GOOS GOARCH=$GOARCH go build -o $output -tags=gpl -ldflags "$ldflags" -trimpath ./cmd/
+    if [ $? -ne 0 ]; then
+        echo "Error: failed to build $GOOS/$GOARCH"
+        exit 1
+    fi
 done
 
 echo "Build complete."