On 12/16/18, Reuben Thomas wrote:
> On Fri, 14 Dec 2018 at 14:51, Nick Bowler wrote:
>
>>
>> If you want to set a value to a variable only if the variable is
>> unset, a typical way to do that in shell programming is:
>>
>> : "${FOO=value-if-unset}"
>>
>> Or if you prefer also to set it the var
On Fri, 14 Dec 2018 at 14:51, Nick Bowler wrote:
>
> If you want to set a value to a variable only if the variable is
> unset, a typical way to do that in shell programming is:
>
> : "${FOO=value-if-unset}"
>
> Or if you prefer also to set it the variable is _empty_ (i.e., including
> the case
On 12/14/18, Reuben Thomas wrote:
> What's the right way to do this? I currently have:
>
> AC_ARG_VAR([WORD_SIZE],
> [value of WORD_SIZE register [default: sizeof(long)]])
> if "$ac_cv_env_WORD_SIZE_set" != set; then
> AC_CHECK_SIZEOF([long])
> ac_cv_env_WORD_SIZE_value=SIZEOF_LONG
> fi
>
>
What's the right way to do this? I currently have:
AC_ARG_VAR([WORD_SIZE],
[value of WORD_SIZE register [default: sizeof(long)]])
if "$ac_cv_env_WORD_SIZE_set" != set; then
AC_CHECK_SIZEOF([long])
ac_cv_env_WORD_SIZE_value=SIZEOF_LONG
fi
which seems to work, but I'm conscious that I'm relyi
