mdl_cxx_function_try_blocks

If the C++ compiler supports function try blocks, define `HAVE_FUNCTION_TRY_BLOCKS'.

AC_DEFUN([MDL_CXX_FUNCTION_TRY_BLOCKS],
[
AC_REQUIRE([AC_PROG_CXX])
changequote(,)dnl
AC_MSG_CHECKING(whether ${CXX} supports function try blocks)
changequote([,])dnl
AC_CACHE_VAL(mdl_cv_have_function_try_blocks,
[
AC_LANG_SAVE
AC_LANG_CPLUSPLUS
AC_TRY_COMPILE([void foo() try{} catch( ... ){}],
[foo();],
mdl_cv_have_function_try_blocks=yes,
mdl_cv_have_function_try_blocks=no)
AC_LANG_RESTORE
])
AC_MSG_RESULT($mdl_cv_have_function_try_blocks)
if test "$mdl_cv_have_function_try_blocks" = yes; then
AC_DEFINE(HAVE_FUNCTION_TRY_BLOCKS)
fi])