From 2b7466a22b897c7c30550f3572fbdd7bc77554ec Mon Sep 17 00:00:00 2001
From: Evgeny Vereshchagin <evvers@ya.ru>
Date: Wed, 26 Oct 2016 02:39:48 +0300
Subject: build-sys/autogen: don't use bashisms (#4489)

Fixes:
$ ls -l /bin/sh
lrwxrwxrwx 1 root root 4 Feb 17  2016 /bin/sh -> dash

$ ./autogen.sh c
./autogen.sh: 22: ./autogen.sh: [[: not found
...
checking whether make supports nested variables... (cached) yes
checking build system type... Invalid configuration `c': machine `c' not
recognized
configure: error: /bin/bash build-aux/config.sub c failed

this is a follow-up for a5e739a570081231
---
 autogen.sh | 12 +++++-------
 1 file changed, 5 insertions(+), 7 deletions(-)

(limited to 'autogen.sh')

diff --git a/autogen.sh b/autogen.sh
index fa8d2916ad..1897e23b53 100755
--- a/autogen.sh
+++ b/autogen.sh
@@ -19,13 +19,11 @@ set -e
 
 verb="$1"
 
-if [[ -n "$verb" ]]; then
-        if [[ "$verb" != [cgals] ]]; then
-                echo "Unexpected argument: $verb" >&2
-                exit 1
-        fi
-        shift
-fi
+case "$verb" in
+"") ;;
+[cgals]) shift ;;
+*) echo "Unexpected argument: $verb" >&2; exit 1 ;;
+esac
 
 oldpwd=$(pwd)
 topdir=$(dirname $0)
-- 
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