Re: HELP! Can I construct individial shell commands using a function

[Oleksandr Gavenko]

On 2011-02-27 5:10, address@hidden wrote:
> Thank you so much, Luke. You've revealed this great trick just in time,
> about which GNU make manual does not say. Correct me if it does say.
>
> On Sat, 26 Feb 2011 21:23:15 -0500, Luke Shumaker<address@hidden>
> wrote:
> > The trick is to get the different commands on different lines.  Try
> > this:
> >
> > define _ExecuteShcmdArray
> > $(foreach c,$1,@$($c)
> > )
> > endef
> >
> > shellcmd1 = cd .. ; pwd
> > shellcmd2 = cd .. ; pwd
> >
> > all:
> >         $(call _ExecuteShcmdArray,shellcmd1 shellcmd2)
This seems VERY tricky!

I simply wrote your function as recursively expanded variable
with command invoked in separate shells (e.g. '(echo 1);(echo 2);' ):

_ExecuteShcmdArray = $(foreach c,$1,($($c));)

So in addition to

shellcmd1 = cd .. ; pwd
shellcmd2 = cd .. ; pwd

all:
        $(call _ExecuteShcmdArray,shellcmd1 shellcmd2)

it evaluated as expected:

  $ make
(cd .. ; pwd); (cd .. ; pwd);
/cygdrive/e/home/devel
/cygdrive/e/home/devel

You can put @ before call to suppress printing of command.

Question to GNU Make GURU: 'foreach' with newline in 'define'
documented behavior?

--
Best regards!