File: ac_cxx_cppflags_std_lang.m4

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dnl Available from the GNU Autoconf Macro Archive at:
dnl http://www.gnu.org/software/ac-archive/htmldoc/ac_cxx_cppflags_std_lang.html
dnl
AC_DEFUN([AC_CXX_CPPFLAGS_STD_LANG],
  [AC_REQUIRE([AC_CXX_COMPILER_VENDOR])
   case "$ac_cv_cxx_compiler_vendor" in
     compaq)
      # By default, Compaq CXX has an iostream classes implementation
      # that is _not_ in the `std' namespace.
      $1="$$1 -D__USE_STD_IOSTREAM=1";;
     hp)
      # When `configure' looks for a C++ header (eg. <iostream>) it invokes
      # `aCC -E $CPPFLAGS'.  However, including standard C++ headers like
      # <iostream> fails if `-AA' is not supplied.
      $1="$$1 -AA";;
   esac])