From 9f2c5f83a19ca8f9fbb18faa7e7974595c6e4b54 Mon Sep 17 00:00:00 2001
From: P. J. McDermott <pjm@nac.net>
Date: Mon, 08 Oct 2012 20:37:41 -0400
Subject: Support lib deps like opkhelper-3.0 in configure.

---
(limited to 'configure')

diff --git a/configure b/configure
index ac5fd95..6d8e564 100755
--- a/configure
+++ b/configure
@@ -40,6 +40,9 @@ dep_cmds='
 sh
 opkg
 '
+dep_libs='
+opkhelper-3.0
+'
 
 long_opts_with_args='
 srcdir
@@ -53,6 +56,7 @@ sysconfdir
 '
 
 features="${dep_cmds}
+${dep_libs}
 metadata"
 
 subst_vars="package_name
@@ -67,11 +71,19 @@ main()
 	parse_options "${@}"
 
 	for dep in ${dep_cmds}; do
-		dep_val="$(eval echo \$\{"${dep}"\})"
+		dep_name="$(printf '%s' "${dep}" | tr -c '[a-z0-9]' '_')"
+		dep_val="$(eval echo \$\{"${dep_name}"\})"
 		if [ -z "${dep_val}" ]; then
 			find_dep_cmd "${dep}"
 		fi
 	done
+	for dep in ${dep_libs}; do
+		dep_name="$(printf '%s' "${dep}" | tr -c '[a-z0-9]' '_')"
+		dep_val="$(eval echo \$\{"${dep_name}"\})"
+		if [ -z "${dep_val}" ]; then
+			find_dep_lib "${dep}"
+		fi
+	done
 
 	if ${missing_deps}; then
 		cat <<EOF
@@ -240,6 +252,31 @@ find_dep_cmd()
 	return 1
 }
 
+find_dep_lib()
+{
+	_dep="${1}"
+
+	${quiet} || printf 'checking for %s... ' "${dep}"
+
+	_old_ifs="${IFS}"
+	IFS=:
+
+	for _element in ${libdir}:${PATH}; do
+		: ${_element=-.}
+		if [ -f "${_element}/${_dep}" -a -x "${_element}/${_dep}" ]; then
+			${quiet} || printf '%s/%s\n' "${_element}" "${_dep}"
+			eval "${_dep}"=\"${_element}/${_dep}\"
+			IFS="${_old_ifs}"
+			return 0
+		fi
+	done
+
+	IFS="${_old_ifs}"
+	${quiet} || printf 'not found\n'
+	missing_deps='true'
+	return 1
+}
+
 write_makefiles()
 {
 	# Make a script to edit input makefiles.
--
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