Patch during prebuild rather than regular build

Author: clayote

recipes/igraph/recipe.sh

@@ -18,7 +18,8 @@ RECIPE_igraph=$RECIPES_PATH/igraph
 
 
 function prebuild_igraph() {
-    true
+    try patch $BUILD_igraph/setup.py $RECIPE_igraph/setup.py.patch
+    try patch $BUILD_igraph/setup.cfg $RECIPE_igraph/setup.cfg.patch
 }
 
 function shouldbuild_igraph() {
@@ -29,8 +30,6 @@ function shouldbuild_igraph() {
 
 function build_igraph() {
     cd $BUILD_igraph
-    patch setup.py $RECIPE_igraph/setup.py.patch
-    patch setup.cfg $RECIPE_igraph/setup.cfg.patch
     push_arm
 
     try $HOSTPYTHON setup.py build_ext -I"$BUILD_PATH/python-install/include/igraph:$ANDROIDNDK/sources/cxx-stl/gnu-libstdc++/4.4.3/libs/armeabi/include" -L"$BUILD_PATH/python-install/lib:$ANDROIDNDK/sources/cxx-stl/gnu-libstdc++/4.4.3/libs/armeabi" -l gnustl_static -p arm-gnueabi install