configure: restore backward compatibility

Commit a9c3d70d902a0473ee5c13336317006a52ce8242 broke backward compatibility
by making 'configure' error out if parameters are passed, instead of
ignoring them.
Sometimes packaging systems detect 'configure' and assume it's from
autotools, and pass a bunch of options. Eg:

 dh_auto_configure
	./configure --build=x86_64-linux-gnu --prefix=/usr --includedir=${prefix}/include --mandir=${prefix}/share/man --infodir=${prefix}/share/info --sysconfdir=/etc --localstatedir=/var --disable-option-checking --disable-silent-rules --libdir=${prefix}/lib/x86_64-linux-gnu --runstatedir=/run --disable-maintainer-mode --disable-dependency-tracking

Ignore unknown options again instead of erroring out.

Fixes: a9c3d70d902a ("configure: add options ability")
Signed-off-by: Luca Boccassi <bluca@debian.org>
Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>

diff --git a/configure b/configure
index 0a4a0fc90a43f9b00f53aa99687db95c883fbd20..7f4f3bd938b9d193c07f08d526fd67cc254fa294 100755 (executable)
--- a/configure
+++ b/configure
@@ -518,7 +518,7 @@ else
                        "")
                                break ;;
                        *)
-                               usage 1 ;;
+                               shift 1 ;;
                esac
        done
 fi