# Copyright (C) 2007 Phil Betts
# This file is free software; I give unlimited permission to copy and/or
# distribute it, with or without modifications, as long as this notice is
# preserved.

# This file is to help the detection and reporting of errors caused by missing
# DLLs in cygwin.  In order to prevent non-interactive scripts displaying dialog
# boxes when an error is detected, cygwin programs disable the dialog box.  This
# has the unfortunate side effect of making linkage errors go unreported.

# The file contains two methods for detecting and reporting the error,
# The first, using the PROMPT_COMMAND environment variable will be suitable for
# most users.
# The second, using trap is more prone to being accidentally disabled, so it is
# not used by default.

# If you are reading this because you wish to set $PROMPT_COMMAND to something
# different, please set the following variable to 1.

TRAP53=0

if [ $TRAP53 -eq 0 ];then

declare -r PROMPT_COMMAND='
if [ $? = 53 ];then
 echo "Missing DLL."
 echo "Run cygcheck on the executable to identify the missing file"
 echo "Then use the cygwin setup package search at:"
 echo "  http://cygwin.com/packages/"
 echo "to identify which package contains the missing file"
fi
# Before changing PROMPT_COMMAND, please read /etc/profile.d/dllcheck.sh'

else

trap '                         
if [ $? = 53 ];then
 echo "Missing DLL."
 echo "Run cygcheck on the executable to identify the missing file"
 echo "Then use the cygwin setup package search at:"
 echo "  http://cygwin.com/packages/"
 echo "to identify which package contains the missing file"
 echo "Run cygcheck on the executable to identify the missing file"
fi' ERR

fi