# - Find MONO
# This module finds an installed MONO.  It sets the following variables:
#  MONO_FOUND - set to true if MONO is found
#  MONO_DIR - the directory where swig is installed
#  MONO_EXECUTABLE - the path to the swig executable
#  MONO_VERSION   - the version number of the swig executable
#
# All information are collected from the MONO_EXECUTABLE so the
# version to be found can be changed from the command line by
# means of setting MONO_EXECUTABLE
#
#  Copyright (c) 2006-2011 Mathieu Malaterre <mathieu.malaterre@gmail.com>
#
#  Redistribution and use is allowed according to the terms of the New
#  BSD license.
#  For details see the accompanying COPYING-CMAKE-SCRIPTS file.
#
set(MONO_FOUND FALSE)

# apt-get install mono-jit mono-mcs mono-gac mono-gmcs

# eg.
# $ gmcs HelloWorld.cs
# $ mono HelloWorld.exe

# TODO: what are 'cscc' and 'ilrun' ?

find_program(MONO_EXECUTABLE mono)
find_program(MCS_EXECUTABLE  mcs)    # 1.0 (mono >= 2.11 => target all version)
find_program(GMCS_EXECUTABLE mono-csc gmcs)  # 2.0
find_program(SMCS_EXECUTABLE smcs)  # 3.0
find_program(DMCS_EXECUTABLE dmcs)  # 4.0
# mono-gac: /usr/bin/gacutil
find_program(GACUTIL_EXECUTABLE gacutil)  # gacutil - Global Assembly Cache management utility.
# mono-1.0-devel: /usr/bin/ilasm
find_program(ILASM_EXECUTABLE ilasm)  #  ilasm, ilasm2 - Mono IL assembler
# mono-1.0-devel: /usr/bin/sn
find_program(SN_EXECUTABLE sn)  #  sn - Digitally sign/verify/compare strongnames on CLR assemblies.

# We decide to declare mono found when both interpreter and compiler 1.0 are found.
if(MONO_EXECUTABLE AND MCS_EXECUTABLE)
set(MONO_FOUND TRUE)
# TODO get version
# TODO: there are multiple 'mcs' command on unix, need to check this is Mono:
# mcs --version should return "Mono C# compiler version 1.9.1.0"
elseif(MONO_EXECUTABLE AND GMCS_EXECUTABLE)
set(MONO_FOUND TRUE)
elseif(MONO_EXECUTABLE AND SMCS_EXECUTABLE)
set(MONO_FOUND TRUE)
elseif(MONO_EXECUTABLE AND DMCS_EXECUTABLE)
set(MONO_FOUND TRUE)
endif()

if(NOT MONO_FOUND)
  if(NOT MONO_FIND_QUIETLY)
    if(MONO_FIND_REQUIRED)
      message(FATAL_ERROR "MONO was not found. Please specify mono/mcs executable location")
    else()
      message(STATUS "MONO was not found. Please specify mono/mcs executable location")
    endif()
  endif()
endif()

get_filename_component(current_list_path ${CMAKE_CURRENT_LIST_FILE} PATH)
set(MONO_USE_FILE ${current_list_path}/UseMONO.cmake)

mark_as_advanced(
  MONO_EXECUTABLE
  MCS_EXECUTABLE
  GMCS_EXECUTABLE
  SMCS_EXECUTABLE
  DMCS_EXECUTABLE
  GACUTIL_EXECUTABLE
  ILASM_EXECUTABLE
  SN_EXECUTABLE
)