Dear Sir/Madam
When compiling with make I'm getting an error as below. I have also copied
and pasted the makefile below the error generated.
On Wed, 2007-11-28 at 12:17 +0530, Nisha G wrote:
When compiling with make I'm getting an error as below.
This is a bug in your code, not a bug in GNU make. We can't help you
solve bugs in your code: this mailing list is for bugs in the GNU make
program itself.
Good luck!
--
URL:
http://savannah.gnu.org/bugs/?21661
Summary: Make expands command-line variable defnitions
after/during every command invocation
Project: make
Submitted by: bobbogo
Submitted on: Wednesday 28/11/07 at 16:43
Follow-up Comment #1, bug #21661 (project make):
As far as I can see, this is the expected and as-intended behaviour. Try
make 'var:=$(warning hello)'
instead, and refresh your memory on the difference between immediate and
deferred expansion.
Follow-up Comment #2, bug #21661 (project make):
I set $var on the command-line. Note that it is not mentioned _anywhere_
inside the Makefile, and yet it (or its expression) seems to be being expanded
whenever the Makefile runs a command --- _any_ and _all_ commands.
Expected behaviour?
Follow-up Comment #5, bug #21661 (project make):
Ah, now it's clear what the confusion is. This happens because make puts
command line variable settings into the environment to be exported to the
subshell. And, of course, before make can invoke a subshell it has to expand
all the variables
Here's an example makefile:
cat _EOF Makefile
test.out: ./script.sh
$ $@
_EOF
Now when I run make, it executes
`script.sh test.out`
instead of
`./script.sh test.out`
This is all fine when 'PATH=.:stuff', and sometimes acceptable when
'PATH=stuff:.'; but in the general case, its
http://www.gnu.org/software/make/manual/make.html#Makefile-Basics
suggests you follow your final suggestion, as you (seem to) have a
$(srcdir) variable. It suggests ./ otherwise, although I've tripped
over doing that and generally use $(CURDIR)/ myself.
It's helpful elsewhere that ./file and
On Wed, 28 Nov 2007, Martin Dorey wrote:
http://www.gnu.org/software/make/manual/make.html#Makefile-Basics
suggests you follow your final suggestion, as you (seem to) have a
$(srcdir) variable. It suggests ./ otherwise, although I've tripped
over doing that and generally use $(CURDIR)/ myself.
