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dnl -*- Autoconf -*-
AC_DEFUN([RUBY_TRY_CXXFLAGS], [
save_CXXFLAGS="$CXXFLAGS"
CXXFLAGS="[$]CXXFLAGS $1"
AC_MSG_CHECKING([whether ]$1[ is accepted as CXXFLAGS])
RUBY_WERROR_FLAG([
AC_LANG_PUSH([C++])
AC_LINK_IFELSE([AC_LANG_PROGRAM([[$4]], [[$5]])],
[$2
AC_MSG_RESULT(yes)],
[$3
AC_MSG_RESULT(no)])
])
AC_LANG_POP([C++])
CXXFLAGS="$save_CXXFLAGS"
save_CXXFLAGS=
])dnl
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