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From 56a144f7a352d4dbd1e08585e82fad4bd6677b52 Mon Sep 17 00:00:00 2001
Message-Id: <56a144f7a352d4dbd1e08585e82fad4bd6677b52.1637678195.git.aclaudi@redhat.com>
In-Reply-To: <b30268eda844bdebbb8e5e4f5735e3b1bb666368.1637678195.git.aclaudi@redhat.com>
References: <b30268eda844bdebbb8e5e4f5735e3b1bb666368.1637678195.git.aclaudi@redhat.com>
From: Andrea Claudi <aclaudi@redhat.com>
Date: Tue, 23 Nov 2021 15:28:18 +0100
Subject: [PATCH] configure: fix parsing issue with more than one value per
 option

Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=2016061
Upstream Status: iproute2.git commit c330d097

commit c330d0979440a1dec4a436fd742bb6e28d195526
Author: Andrea Claudi <aclaudi@redhat.com>
Date:   Thu Oct 14 10:50:51 2021 +0200

    configure: fix parsing issue with more than one value per option

    With commit a9c3d70d902a ("configure: add options ability") users are no
    more able to provide wrong command lines like:

    $ ./configure --include_dir foo bar

    The script simply bails out when user provides more than one value for a
    single option. However, in doing so, it breaks backward compatibility with
    some packaging system, which expects unknown options to be ignored.

    Commit a3272b93725a ("configure: restore backward compatibility") fix this
    issue, but makes it possible again for users to provide wrong command lines
    such as the one above.

    This fixes the issue simply ignoring autoconf-like options such as
    '--opt=value'.

    Fixes: a3272b93725a ("configure: restore backward compatibility")
    Signed-off-by: Andrea Claudi <aclaudi@redhat.com>
    Acked-by: Phil Sutter <phil@nwl.cc>
    Signed-off-by: David Ahern <dsahern@kernel.org>
---
 configure | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/configure b/configure
index 0f304206..9ec19a5b 100755
--- a/configure
+++ b/configure
@@ -517,10 +517,12 @@ else
 				shift 2 ;;
 			-h | --help)
 				usage 0 ;;
+			--*)
+				shift ;;
 			"")
 				break ;;
 			*)
-				shift 1 ;;
+				usage 1 ;;
 		esac
 	done
 fi
-- 
2.31.1