[inline:]
On 1/4/2012 6:00 PM, Mark LaPierre wrote:
Hey Paul,
If you want a file to be executable it must be +x. If the file is
read as input to another program it needs not be +x.
I've always known that to execute a file, it must be "+x". If I am not
directly executing it, who needs the "+x". The leap of faith regarding
makefiles came from the answers in this list. I just never really had a
proper mindset to what the relationship of make to makefile and, given
that there is no #! in the makefile yet it has lots of stuff which sure
makes it feel like a "shell-style" script, I needed someone to tell me
"this is how to look at a makefile". I got that thanks to this list and
a bunch more info which is good for me.
Example 1:
[...]
Example 2:
[...].
I've know this for awhile (though I don't want to embarress myself too
much by saying how long it took me to figure out "#! /bin/whatever" as I
was stuck for the longest time on looking at it going "but the # means
its a comment" (smile))
Now, to be specific to your question, the same principle applies.
Your -x Makefile/makefile is not an executable file. It contains a
list of instructions the /usr/bin/make executable interprets. The
executable is /usr/bin/make.
I wish I had been able to think that through ... something about a
makefile seemed different and I just didn't make the leap. Mental block,
brain fart, whatever. Its been bugging me for a long time and I just got
so frustrated at not being able to see it.
You do not have to supply the name of the makefile, as long its name
is makefile, because /usr/bin/make defaults to that file name
I'm using Makefile solely out of habit and have created alternate "make
files" of various names.
The makefile is not being executed but /usr/bin/make is executed and
it is using the contents of the makefile as input to guide its
processing.
Yup, it all makes sense now
Thanks,
Paul
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