make-binaries: Enable old urandom support

libexpat 2.8.2 has disabled this by default in
  1257  CMake|Autotools: Stop using /dev/urandom by default
  libexpat/libexpat@2ca41f1

The recommended alternatives (arc4random, getentropy, getrandom ...)
do not work in make-binaries right now.
As a temporary workaround, let's enable urandom support.

Author: badlop

tools/make-binaries

@@ -595,7 +595,9 @@ build_deps()
 
 	info "Building Expat $expat_vsn for $arch-$libc ..."
 	cd "$target_src_dir/$expat_dir"
-	$configure --prefix="$prefix" --enable-static --disable-shared \
+	CPPFLAGS="-DXML_POOR_ENTROPY=1 -DXML_DEV_URANDOM=1" $configure \
+	    --prefix="$prefix" --enable-static --disable-shared \
+	    --with-dev-urandom \
 	    --without-docbook \
 	    CFLAGS="$CFLAGS -O3 -fPIC"
 	make