Protection for non-interactive procedures

diff --git a/SConstruct b/SConstruct
index f5cde93..517b1a6 100644 (file)
--- a/SConstruct
+++ b/SConstruct
@@ -1,4 +1,5 @@
 import os
+import sys, select
 
 # Basic paths
 prefix = ARGUMENTS.get ('prefix', "/usr/local")
@@ -23,7 +24,13 @@ rc = os.system("clang++ --version >/dev/null 2>/dev/null")
 if rc == 0: 
   print "\nDetected clang++ installed in the system"
   print "\nSelect compiler:\n  1. g++\n  2. clang++"
-  option = raw_input("\nInput option [1]: ") or "1"
+  #option = raw_input("\nInput option [1]: ") or "1"
+  # Read with timeout:
+  print "\nInput option [1]: "
+  option = 1
+  i, o, e = select.select( [sys.stdin], [], [], 60 )
+  if (i): option = sys.stdin.readline().strip()
+  else: print "expired! using default ..."
   if option == "2":
     env = Environment(CXX = 'clang++')
     env.Append (CCFLAGS = '-DIS_CLANG')