Date: Fri, 29 Jan 1999 15:48:20 +1030 From: Greg Lehey <grog@lemis.com> To: "Scot W. Hetzel" <hetzels@westbend.net> Cc: Roland Jesse <jesse@prinz-atm.CS.Uni-Magdeburg.De>, freebsd-ports@FreeBSD.ORG Subject: Re: `for` construct in Makefiles Message-ID: <19990129154820.N8473@freebie.lemis.com> In-Reply-To: <01d401be4b39$718f7a40$0dcb2e9c@westbend.net>; from Scot W. Hetzel on Thu, Jan 28, 1999 at 09:42:49PM -0600 References: <14001.1199.669731.947141@knecht> <01d401be4b39$718f7a40$0dcb2e9c@westbend.net>
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On Thursday, 28 January 1999 at 21:42:49 -0600, Scot W. Hetzel wrote:
> From: Roland Jesse <jesse@prinz-atm.CS.Uni-Magdeburg.De>
>
>> Hello,
>>
>> I am currently in the process of putting together the port for ACE
>> 4.6.
>>
>> I already set up the PLIST file with all the names of the files to be installed
>> (which is only a subset of work/ACE_wrappers).
>>
>> To install all the files, I ended up trying the following:
>>
>> ------- snip -------
>> INSTALLFILES!= cat pkg/PLIST
>>
>> do-install:
>> @${MKDIR} ${PREFIX}/ACE_wrappers
>> for i in ${INSTALLFILES}
>> do
>> cp work/${i} ${PREFIX}/ACE_wrappers/${i}
>> done
>> ------- snap -------
>>
>> This does not work. The error message is:
>
> I believe you have to use $${i} in make files. As the "for .. " statement is
> run in a separate shell, and the extra $ escapes the second.
In addition, the continuation rules for Makefiles are different from
those for the shell. You can't write this loop over several lines.
You must write it as a single logical line, which requires semicolons
where you wouldn't necessarily expect them:
for i in ${INSTALLFILES}; do cp work/$${i} ${PREFIX}/ACE_wrappers/$${i}; done
You can spread it over multiple lines with \, but you still need the semicolons:
for i in ${INSTALLFILES}; \
do \
cp work/$${i} ${PREFIX}/ACE_wrappers/$${i}; \
done
Greg
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