From: Francis Dupont <fdupont@isc.org>
Date: Sat, 11 Apr 2020 14:51:54 +0000 (+0200)
Subject: [#767] Added a warning when ps -p bugs
X-Git-Tag: Kea-1.7.8~104
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=44dc50d1d71a508fdf72d2ba8536b3f5c4d8e022;p=thirdparty%2Fkea.git

[#767] Added a warning when ps -p bugs
---

diff --git a/configure.ac b/configure.ac
index b6e4195d06..aa641578de 100755
--- a/configure.ac
+++ b/configure.ac
@@ -67,6 +67,12 @@ AC_SUBST(SEP)
 # pkg-config can be required.
 AC_PATH_PROG([PKG_CONFIG], [pkg-config])
 
+# check against BusyBox ps not supporting ps -p.
+ps -p 1234 2>&1 > /dev/null | grep 'unrecognized option: p'
+if test $? -eq 0; then
+	AC_MSG_WARN("ps does not support -p. It is likely the BusyBox ps: please install a full ps like procps")
+fi
+
 # Enable low-performing debugging facilities? This option optionally
 # enables some debugging aids that perform slowly and hence aren't built
 # by default.