Modestas Vainius wrote:
> I don't think this scales well. Something like $(dpkg-buildflags --
> export=make) would be better to suggest. IMHO, project shall decide on clear
> recommendations how to proceed.
Side note: I don't know how to do that with GNU make, actually.
$(shell ...) works for one variable, but it converts newlines to
spaces. In the spirit you suggest, the simplest way might be
something like
configure-stamp:
set -e; \
eval "$$(dpkg-buildflags --export=sh)"; \
CFLAGS="-Wall $$CFLAGS"; \
./configure ...
In my own work I have been using
CFLAGS := -Wall $(shell dpkg-buildflags --get CFLAGS)
which has some advantages over --export=sh:
- it can be overridden on the "debian/rules" command line;
- it allows me to easily pass the flags explicit on the configure
command line instead of through the environment;
- I can easily read and manipulate CFLAGS before passing it on;
- it does not affect flags other than CFLAGS, so the effect
gets well tested and the use case is obvious to me (unlike LDFLAGS
et al).
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