drone: update build flags

drone/.SRCINFO

@@ -1,13 +1,13 @@
 pkgbase = drone
 	pkgdesc = Drone is a Continuous Delivery platform built on Docker, written in Go - Free enterprise variant
 	pkgver = 2.12.1
-	pkgrel = 1
+	pkgrel = 2
 	url = https://drone.io
 	arch = x86_64
-	license = Apache
+	license = custom
 	makedepends = go
 	makedepends = git
-	makedepends = gcc
+	options = !lto
 	backup = etc/drone/server
 	source = git+https://github.com/drone/drone.git#tag=v2.12.1
 	source = drone.service

drone/PKGBUILD

@@ -1,37 +1,65 @@
 # Maintainer: Sl@ny <webmaster [at] slany [dot] work>
 pkgname=drone
 pkgver=2.12.1
-pkgrel=1
+pkgrel=2
 pkgdesc="Drone is a Continuous Delivery platform built on Docker, written in Go - Free enterprise variant"
 arch=('x86_64')
 url="https://drone.io"
-license=('Apache')
-makedepends=('go' 'git' 'gcc')
+license=('custom')
+makedepends=('go' 'git')
+options=('!lto')
 backup=('etc/drone/server')
 source=(git+https://github.com/drone/drone.git#tag=v$pkgver
-        'drone.service'
-        'server.conf')
+    'drone.service'
+    'server.conf')
 sha256sums=('SKIP'
-            '3cd219b1c5611b9ff4211d4837dff11228d9a491cd41d21f4c60af77c8c21d5c'
-            '2b8957cd6b9f9ee6e8d831f58b0ef3fac2170a56f6259884ec7d30c3ba38c73a')
+    '3cd219b1c5611b9ff4211d4837dff11228d9a491cd41d21f4c60af77c8c21d5c'
+    '2b8957cd6b9f9ee6e8d831f58b0ef3fac2170a56f6259884ec7d30c3ba38c73a')
+
+prepare() {
+    cd "$pkgname"
+
+    mkdir build
+
+    go mod download
+}
 
 build() {
-    cd "$srcdir/$pkgname"
-    go build -a -v -trimpath -buildmode=pie -mod=readonly -tags "nolimit" -ldflags '-w -s' ./cmd/drone-server
+    cd "$pkgname"
+
+    export CGO_CPPFLAGS="${CPPFLAGS}"
+    export CGO_CFLAGS="${CFLAGS}"
+    export CGO_CXXFLAGS="${CXXFLAGS}"
+    local COMMON_FLAGS=(
+        -trimpath
+        -buildmode=pie
+        -mod=readonly
+        -modcacherw
+        -ldflags "-linkmode external -extldflags \"${LDFLAGS}\""
+    )
+
+    go build \
+        "${COMMON_FLAGS[@]}" \
+        -tags "nolimit" \
+        -o build \
+        ./cmd/...
+}
+
+check() {
+    cd "$pkgname"
+    go test -v ./...
 }
 
 package() {
-    cd "$srcdir"
-
-    # binaries
-    install -Dm755 "$pkgname/$pkgname"-server "$pkgdir"/usr/bin/"$pkgname"-server
-
-    # license
-    install -Dm644 "$pkgname/LICENSE" "$pkgdir/usr/share/licenses/$pkgname/LICENSE"
-
     # service
     install -Dm644 drone.service "$pkgdir/usr/lib/systemd/system/drone.service"
-
     # config
     install -Dm644 server.conf "$pkgdir/etc/drone/server"
+
+    cd "$pkgname"
+    
+    # binary
+    install -vDm755 -t "$pkgdir/usr/bin" build/*
+    # license
+    install -vDm644 -t "$pkgdir/usr/share/licenses/$pkgname" LICENSE NOTICE
 }