Switch to new download format and rebuild with libheif and automatic stripping

pkg.info

@@ -1,9 +1,21 @@
 name: gd
 description: Open source code library for the dynamic creation of images
 version: 2.3.3
+revision: 2
 url: https://libgd.github.io/
 license: custom
 architecture: any
-depends: ["fontconfig","libavif","libwebp","libxpm"]
-optional_depends: ["perl"]
 type: source
+depends:
+  - fontconfig
+  - libavif
+  - libheif
+  - libwebp
+  - libxpm
+optional_depends:
+  - perl
+downloads:
+  - url: https://github.com/libgd/libgd/archive/gd-${BPM_PKG_VERSION}.tar.gz
+    extract_to: ${BPM_SOURCE}
+    extract_strip_components: 1
+    checksum: 24429f9d0dbe0f865aaa4b1a63558242396ba9134e6cfd32ca5e486a84483350

source.sh

@@ -2,16 +2,6 @@
 # BPM Expects the source code to be extracted into the automatically created 'source' directory which can be accessed using $BPM_SOURCE
 # BPM Expects the output files to be present in the automatically created 'output' directory which can be accessed using $BPM_OUTPUT
 
-DOWNLOAD="https://github.com/libgd/libgd/archive/gd-${BPM_PKG_VERSION}.tar.gz"
-FILENAME="${DOWNLOAD##*/}"
-
-# The prepare function is executed in the root of the temp directory
-# This function is used for downloading files and putting them into the correct location
-prepare() {
-  wget "$DOWNLOAD"
-  tar -xvf "$FILENAME" --strip-components=1 -C "$BPM_SOURCE"
-}
-
 # The build function is executed in the source directory
 # This function is used to compile the source code
 build() {