Hi all,
Is it possible to prevent a variable from being exported to sub-makes?
Below is the example:
============================================
$(warning "selector: $(selector)")
ifneq ($(selector),)
override selector :=
endif
$(warning "selector: $(selector)")
aaa:
$(MAKE) selector=abc bbb
bbb:
$(MAKE) ccc
ccc:
============================================
The "make aaa" command produces the following output:
Makefile:1: "selector: "
Makefile:5: "selector: "
make selector=abc bbb
make[1]: Entering directory `/home/avn/tmp'
Makefile:1: "selector: abc"
Makefile:5: "selector: "
make ccc
make[2]: Entering directory `/home/avn/tmp'
Makefile:1: "selector: abc"
Makefile:5: "selector: "
make[2]: Nothing to be done for `ccc'.
make[2]: Leaving directory `/home/avn/tmp'
make[1]: Leaving directory `/home/avn/tmp'
That is, the lowest sub-make receives selector=abc, though the 2nd
sub-make overrided it with empty string. Is it right behavior? If so,
how could one prevent a variable from being exported to sub-make
processes? (unexport selector does not help either).
Regards,
Alexey.
--
All are welcome to our nest.
We are Pkunk, we cannot help but love all.
-- Pkunks, SC2
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