Update package version to 0.21.4

source.sh

@@ -2,7 +2,7 @@
 # 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://www.libraw.org/data/LibRaw-${BPM_PKG_VERSION}.tar.gz"
+DOWNLOAD="https://github.com/LibRaw/LibRaw/archive/refs/tags/${BPM_PKG_VERSION}.tar.gz"
 FILENAME="${DOWNLOAD##*/}"
 
 # The prepare function is executed in the root of the temp directory
@@ -10,6 +10,9 @@ FILENAME="${DOWNLOAD##*/}"
 prepare() {
   wget "$DOWNLOAD"
   tar -xvf "$FILENAME" --strip-components=1 -C "$BPM_SOURCE"
+
+  cd "$BPM_SOURCE"
+  autoreconf -fi
 }
 
 # The build function is executed in the source directory