[build] add to autogen.sh hint listing reqd pkgs

add hint to autogen.sh listing packages required for build
  if ./autogen.sh fails

1 files changed, 7 insertions, 0 deletions

diff --git a/autogen.sh b/autogen.sh
index 7377a64a..6a2ecd8b 100755
--- a/autogen.sh
+++ b/autogen.sh
@@ -1,6 +1,13 @@
 #!/bin/sh
 # Run this to generate all the initial makefiles, etc.
 
+function errtrace {
+   echo 1>&2 \
+     "build requires autoconf automake libtool m4 pcre pcre-devel pkg-config"
+}
+
+trap errtrace ERR
+
 set -e
 
 if [ ! -f configure.ac -o ! -f COPYING ]; then