Rebuild with automatic stripping and update source.sh script

source.sh

@@ -2,11 +2,16 @@
 # 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
 
+# The prepare function is executed in the root of the temp directory
+# This function is used for putting downloaded files to the correct location or applying patches
+prepare() {
+  cd "$BPM_SOURCE"
+  ./autogen.sh
+}
+
 # The build function is executed in the source directory
 # This function is used to compile the source code
 build() {
-  ./autogen.sh
-
   ./configure --bindir=/usr/bin     \
               --libdir=/usr/lib     \
               --runstatedir=/run    \