get_config.sh: Add in script to easily get current build configuration

.github/ISSUE_TEMPLATE/bug_report.md

@@ -61,12 +61,22 @@ details, it may not be possible to resolve your issue.**
 
 ## libcoap Configuration Summary
 
-Copy all the "libcoap Configuration Summary:" output lines (about 40 lines) here after running
-`./configure` (with any options that you have specified)
-  or
-`cmake ..` (with any -D options that you have specified)
-  or if neither of the above two methods is used (do from within the libcoap directory)
-`git describe --tags`
+If get_config,sh exists, please copy the output from (do in the top level libcoap directory) :-
+```
+./get_config.sh
+```
+Else if using ./configure, please copy the output from (do in the top level libcoap directory) :-
+```
+cat config.log | egrep "result:   |      libcoap|      host s" | cut -d\  -f3-
+```
+Else if using cmake, please copy the output from (do in the cmake build directory) :-
+```
+cmake -LH . | cut -d\  -f2- | egrep "\.\." | egrep "^[A-Z][A-Z]"
+```
+Else please copy the output from (do from within the libcoap directory) :-
+```
+git describe --tags --dirty --always
+```
 
 ## Problem Description
 

get_config.sh

@@ -0,0 +1,30 @@
+#/bin/bash
+
+#
+# This is a helper script to get what the current build configuration is
+#
+
+TAGS=0
+if [ -f config.log ] ; then
+  echo "Last ./configure build"
+  echo ""
+  cat config.log | egrep "      libcoap|      host s" | cut -d\  -f7-
+  cat config.log | egrep "result:   " | cut -d\  -f3- | cut -d\  -f7-
+  echo ""
+  TAGS=1
+fi
+for f in `find . -name CMakeCache.txt -print` ; do
+  DIR=`dirname $f`
+  echo "Last cmake build in $DIR"
+  echo ""
+  (cd $DIR ; cmake -LH . | cut -d\  -f2- | egrep "\.\." | egrep "^[A-Z][A-Z]")
+  echo ""
+  TAGS=1
+done
+
+if [ "$TAGS" = 0 ] ; then
+  echo "Current git source"
+  echo ""
+  git describe --tags --dirty --always
+  echo ""
+fi