File project.diff of Package m4

--- m4.spec.orig
+++ m4.spec
@@ -1,7 +1,7 @@
 #
 # spec file for package m4
 #
-# Copyright (c) 2021 SUSE LLC
+# Copyright (c) 2022 SUSE LLC
 #
 # All modifications and additions to the file contributed by third parties
 # remain the property of their copyright owners, unless otherwise agreed
@@ -28,6 +28,7 @@ Source1:        https://ftp.gnu.org/pub/
 Source2:        https://savannah.gnu.org/project/memberlist-gpgkeys.php?group=m4&download=1#/%{name}.keyring
 Patch1:         gnulib-libio.patch
 Patch2:         gnulib-c-stack.patch
+BuildRequires:  -m4
 BuildRequires:  xz
 Requires(post): %{install_info_prereq}
 Requires(preun):%{install_info_prereq}
@@ -37,7 +38,9 @@ Provides:       base:%{_bindir}/m4
 GNU m4 is an implementation of the traditional Unix macro processor.
 
 %prep
-%setup -q
+xzcat %{S:0} | tar -xvvf -
+%setup -T -D -q -c %{name}-%{version}
+#%setup -q
 %patch1 -p1
 %patch2 -p1