| On Thu, Feb 17, 2000 at 02:12:19PM +0100, Akim Demaille wrote:
| : It'd be much easier if you could send what you have, and how it fails.
|
| Well, since I figured out the problem but didn't know how to implement
| "compile-time" autoconf macros, I don't really have anything that fails...
| I'm reading up on m4 at the moment, and will hopefully be able to implement
| it afterwards.
|
| Before I saw the order of things I thought I could do something like this:
|
| AC_DEFUN(SIM_CHECK_COIN,[
| AC_PREREQ([2.14.1])
2.14.1 doesn't exist!
|
| dnl set up default attributes
| default=yes
|
| for attribute in dummy $3; do
| case $attribute in
| dummy) ;;
| default) default=yes ;;
| nodefault) default=no ;;
| *) AC_MSG_ERROR(invalid attribute \"$attribute\" for `SIM_CHECK_COIN')
|;;
| esac
| done
|
| AC_ARG_WITH(coin, AC_HELP_STRING([--with-coin=DIR], [set the prefix directory wh
| ere Coin resides [default=$default]]), , [with_coin=$default])
|
| [...]
|
| then I would be able to use something like this when libCoin was a non-default
| option:
|
| SIM_CHECK_COIN( , , nodefault)
Maybe I misunderstood your point, but I don't understand why you have
sh code here (maybe that's what you meant with m4 compile time), and I
don't understand why you don't use `yes' and `no' for $3. Is this OK?
define(_SIM_CHECK_COIN_HELP,
[AC_HELP_STRING([--with-coin=DIR],
[set the prefix directory where Coin resides [default=$1]])])
AC_DEFUN(SIM_CHECK_COIN,
[AC_PREREQ([2.14a])dnl
ifelse([$3], [],
[$3], [yes],
[$3], [no],
[AC_FATAL([$0: invalid attribute `$3'])])dnl
AC_ARG_WITH(coin,
_SIM_CHECK_COIN_HELP(m4_default([$3], [yes]))
etc.
Part of the problem is that AC_ENABLE_ are yet another series of
macros which double quote :(
Akim
