File: ruby_try_cxxflags.m4

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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