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Filename : csharpcomp.m4
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# csharpcomp.m4 serial 8
dnl Copyright (C) 2003-2005, 2007, 2009-2010 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
dnl with or without modifications, as long as this notice is preserved.

# Prerequisites of csharpcomp.sh.
# Checks for a C# compiler.
# Sets at most one of HAVE_CSCC, HAVE_MCS, HAVE_CSC.
# Sets HAVE_CSHARPCOMP to nonempty if csharpcomp.sh will work.
# Also sets CSHARPCOMPFLAGS.
AC_DEFUN([gt_CSHARPCOMP],
[
  AC_REQUIRE([gt_CSHARP_CHOICE])
  AC_MSG_CHECKING([for C[#] compiler])
  HAVE_CSHARPCOMP=1
  pushdef([AC_MSG_CHECKING],[:])dnl
  pushdef([AC_CHECKING],[:])dnl
  pushdef([AC_MSG_RESULT],[:])dnl
  AC_CHECK_PROG([HAVE_CSCC_IN_PATH], [cscc], [yes])
  AC_CHECK_PROG([HAVE_MCS_IN_PATH], [mcs], [yes])
  AC_CHECK_PROG([HAVE_CSC_IN_PATH], [csc], [yes])
  popdef([AC_MSG_RESULT])dnl
  popdef([AC_CHECKING])dnl
  popdef([AC_MSG_CHECKING])dnl
  for impl in "$CSHARP_CHOICE" pnet mono sscli no; do
    case "$impl" in
      pnet)
        if test -n "$HAVE_CSCC_IN_PATH" \
           && cscc --version >/dev/null 2>/dev/null \
           && (
             # See if pnetlib is well installed.
             echo 'class ConfTest { static void Main() { } }' > conftest.cs
             cscc -o conftest.exe conftest.cs 2>/dev/null
             error=$?
             rm -f conftest.cs conftest.exe
             exit $error
            ); then
          HAVE_CSCC=1
          ac_result="cscc"
          break
        fi
        ;;
      mono)
        if test -n "$HAVE_MCS_IN_PATH" \
           && mcs --version >/dev/null 2>/dev/null \
           && mcs --version 2>/dev/null | grep Mono >/dev/null; then
          HAVE_MCS=1
          ac_result="mcs"
          break
        fi
        ;;
      sscli)
        if test -n "$HAVE_CSC_IN_PATH" \
           && csc -help >/dev/null 2>/dev/null \
           && { if csc -help 2>/dev/null | grep -i chicken > /dev/null; then false; else true; fi; }; then
          HAVE_CSC=1
          ac_result="csc"
          break
        fi
        ;;
      no)
        HAVE_CSHARPCOMP=
        ac_result="no"
        break
        ;;
    esac
  done
  AC_MSG_RESULT([$ac_result])
  AC_SUBST([HAVE_CSCC])
  AC_SUBST([HAVE_MCS])
  AC_SUBST([HAVE_CSC])
  dnl Provide a default for CSHARPCOMPFLAGS.
  if test -z "${CSHARPCOMPFLAGS+set}"; then
    CSHARPCOMPFLAGS="-O -g"
  fi
  AC_SUBST([CSHARPCOMPFLAGS])
])