[Top][All Lists]

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: test in a m4 macro and variable created from pushdef

From: Benoit SIGOURE
Subject: Re: test in a m4 macro and variable created from pushdef
Date: Fri, 10 Aug 2007 05:20:37 +0200

On Aug 10, 2007, at 4:57 AM, Eric Blake wrote:

According to Vincent Torri on 8/9/2007 12:11 PM:

I have another problem, which is similar. The problem is the result of
AM_CONDITIONAL. Here is my macro:

AM_CONDITIONAL(BUILD_DRIVER_[]UP, test "x${use_]DOWN[}" = "xyes")

Follow the quoting rule of thumb - if you don't want things expanded
immediately, then use one level of [] per () to protect the argument
collection scan, thereafter, use nested quotes to control how the
expansion is parsed.  You want to make sure that UP and DOWN are
independent tokens after the AM_CONDITIONAL is expanded, so this pattern
should do it:

AM_CONDITIONAL([BUILD_DRIVER_[]UP, test "x${use_[]DOWN}" = "xyes"])

Hum, shouldn't this be:
AM_CONDITIONAL([BUILD_DRIVER_[]UP], [test "x${use_[]DOWN}" = "xyes"])

(basically s/, /], [/ ?)

Benoit Sigoure aka Tsuna
EPITA Research and Development Laboratory

Attachment: PGP.sig
Description: This is a digitally signed message part

reply via email to

[Prev in Thread] Current Thread [Next in Thread]