mkdir -p upstream/install/i686-pc-mingw32
curl $(url_w32api-2.3) | tar xzf - -C upstream/install/i686-pc-mingw32
curl $(url_mingw-runtime-3.0) | tar xzf - -C upstream/install/i686-pc-mingw32
-ifeq($(shell uname),Linux)
+ifeq ($(shell uname),Linux)
rm -rf upstream/install/i686-pc-linux-gnu/include
ln -sf /usr/include upstream/install/i686-pc-linux-gnu/include
endif