Let's say that I want all inc* directories in project to be automatically
in the include path. In my Makefile I used to have the following:
CFLAGS = $(shell find "$(CURDIR)" -iname inc* -exec find {} -type d \; |
sed -e "s/^/-I/")
I am not at all sure, how to do that with tup, but I came up with the
following solution:
CFLAGS = '\\$(find "' .. tup.getcwd() .. '" -iname inc* -exec find {} -type
d \\; | sed -e "s/^/-I/")'
CFLAGS then gets included in the compilation command. I would assume that
tup then instruments the find executable, and notices that it reads the
content of all directories, therefore detecting all directories as
dependencies? This does not seem to be the case however: adding new
directories (named inc) does not cause re-compilation of sources.
When I add a new directory named inc, such that it appears first in the find
output, and create a new .h file there, named such that it would be
included in some existing source, tup claims that everything is up to date
(while the output actually doesn't include the new header), but does
compile with this new header after I manually delete previous output files.
As the manual claims that "Should you find otherwise, you've likely found a
bug in tup (not your Tupfiles), in which case you should notify the mailing
list.", so here I am. Two questions: is this a bug, and how to best achieve
my desired result with tup? Note that the solution that I came up with
executes the find commands again for each compiled source, which is not
really optimal, how could I have it so that it gets called at most once per
tup update? (My previous make solution of course required make clean, but
then again, it had support for make clean.)
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