Switch to new download format and fix building against acl 2.4.0

recipe.sh

@@ -2,20 +2,19 @@
 # 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://ftpmirror.gnu.org/gnu/tar/tar-${BPM_PKG_VERSION}.tar.xz"
-FILENAME="${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
+# This function is used for putting downloaded files to the correct location or applying patches
 prepare() {
-  wget "$DOWNLOAD"
-  tar -xvf "$FILENAME" --strip-components=1 -C "$BPM_SOURCE"
+  cd "$BPM_SOURCE"
+  patch -Np1 -i "$BPM_WORKDIR"/tar-1.35-acl-2.4.0.patch
+  
+  autoreconf -fi
 }
 
 # The build function is executed in the source directory
 # This function is used to compile the source code
 build() {
-  FORCE_UNSAFE_CONFIGURE=1 ./configure --prefix=/usr
+  ./configure --prefix=/usr
   make
 }