From eba05086bc011bd7786e04f53a28d8bf5a93592b Mon Sep 17 00:00:00 2001
From: midipix <writeonce@midipix.org>
Date: Fri, 18 Oct 2019 01:06:40 +0000
Subject: build system: configure: support shells with function-specific $0.

---
 configure | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/configure b/configure
index 8ec6f09..c7fe370 100755
--- a/configure
+++ b/configure
@@ -4,6 +4,10 @@ set -eu
 
 trap config_failure 1 2 EXIT
 
+# before we begin...
+mb_script="$0"
+mb_path="$PATH"
+
 usage()
 {
 	cat "$mb_project_dir"/config.usage
@@ -44,7 +48,7 @@ warning_msg()
 
 init_vars()
 {
-	mb_project_dir=$(cd "$(dirname $0)" ; pwd)
+	mb_project_dir=$(cd "$(dirname "$mb_script")" ; pwd)
 	mb_pwd=$(pwd)
 
 	mb_custom_cfgdefs_args=''
-- 
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