# @HEADER
# ************************************************************************
#
#            TriBITS: Tribal Build, Integrate, and Test System
#                    Copyright 2013 Sandia Corporation
#
# Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
# the U.S. Government retains certain rights in this software.
#
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# @HEADER


# @FUNCTION: prepend_cmndline_args()
#
# Utility function that prepends command-line arguments to a variable of
# command-line arguments.
#
# Usage::
#
#   prepend_cmndline_args(<var> "<extraArgs>")
#
# This function just prepends the command-line arguments in the string
# ``"<extraArgs>"`` but does not add an extra space if ``<var>`` is empty on
# input.
#
function(prepend_cmndline_args  CMNDLINE_VAR_NAME  EXTRAARGS)
  if (${CMNDLINE_VAR_NAME})
    set(${CMNDLINE_VAR_NAME} "${EXTRAARGS} ${${CMNDLINE_VAR_NAME}}" PARENT_SCOPE)
  else()
    set(${CMNDLINE_VAR_NAME} "${EXTRAARGS}" PARENT_SCOPE)
  endif()
  #print_var(${CMNDLINE_VAR_NAME})
endfunction()