[bug#41033] [PATCH] gnu: libusb-0.1: fix build failure on newer gcc

[Christopher Howard <christopher@librehacker.com>]

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I need libusb-0.1 to build some older software, but libusb-0.1 build
fails due to a warning from the current GCC version. (Evidently libusb-
0.1 is set to die on any warning.) The attached patch silences the
warning.

-- 
Christopher Howard
p: +1 (907) 374-0257
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From 351bb7004f9bbe8d50bbc7a2e2a1cb3900551e27 Mon Sep 17 00:00:00 2001
From: Christopher Howard <christopher@librehacker.com>
Date: Sat, 2 May 2020 14:41:00 -0800
Subject: [PATCH] gnu: libusb-0.1: fix build failure on newer gcc

Package build fails on truncation warning from current gcc. Silences
this warning.
---
 gnu/packages/libusb.scm | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/gnu/packages/libusb.scm b/gnu/packages/libusb.scm
index 01c138cb4e..3bb2dcd186 100644
--- a/gnu/packages/libusb.scm
+++ b/gnu/packages/libusb.scm
@@ -8,6 +8,7 @@
 ;;; Copyright © 2017 Jonathan Brielmaier <jonathan.brielmaier@web.de>
 ;;; Copyright © 2018 Tobias Geerinckx-Rice <me@tobias.gr>
 ;;; Copyright © 2018 Vagrant Cascadian <vagrant@debian.org>
+;;; Copyright © 2020 Christopher Howard <christopher@librehacker.com>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -113,7 +114,8 @@ version of libusb to run with newer libusb.")
       (sha256
        (base32
         "0i4bacxkyr7xyqxbmb00ypkrv4swkgm0mghbzjsnw6blvvczgxip"))
-      (patches (search-patches "libusb-0.1-disable-tests.patch"))))))
+      (patches (search-patches "libusb-0.1-disable-tests.patch"))))
+    (arguments `(#:configure-flags (list "CFLAGS=-Wno-format-truncation")))))
 
 (define-public libusb4java
   ;; There is no public release so we take the latest version from git.
-- 
2.26.2