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On 04/01/2013 01:04 PM, Michael Stahl wrote:
On 31/03/13 14:52, Tor Lillqvist wrote:
make clean helps. (if you have the patience, you can do "make
foo.clean" for each module that depend on icu.)

if "make clean" helps, most likely something is clearly wrong.
in this case apparently the following commit broke incremental builds of
external libraries:

commit 151abb8b2b9d3a22229b98cec12e29484d12109b
Author: Luboš Luňák <l.lunak@suse.cz>
Date:   Tue Mar 19 16:39:49 2013 +0100

     use -isystem instead of -I for 3rd party headers

     This should avoid gcc warnings in external code we don't care about,
     so there'll be no need to fix them for WaE.

well it's true you don't get warnings when you use -isystem; you also
don't get makefile dependencies generated :(

Though in this case with icu 49 vs. 51, at least what broke the incremental build for me was that old icu headers still lay around in solver/*/inc/external/ (and got picked up from there in dependent modules) from a time when icu headers got delivered to solver instead of being used directly from workdir/*/UnpackedTarball/icu/...

Stephan

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