On 07/12/20 10:30 +0530, Kumar Appaiah said ... > What I want to know is, earlier builds never pulled in atlas3-base-dev > for the build, as you may see here: > > http://buildd.debian.org/fetch.cgi?pkg=libitpp&arch=i386&ver=4.0.0-3&stamp=1193598381&file=log&as=raw
This could just mean that atlas3-base-dev has been added to the dependencies of a package that you build-depend on. > Also, when I try to build the package on my machine outside a > pbuilder, with the B-Deps installed, it works fine without atlas, and > generates packages which don't depend explicitly on libatlas. However, > the moment I try to use pbuilder on it, it fetches atlas3-base-dev for Is your environment up-to-date? Did you ensure that you have all the latest packages (in particular, those that you build-depend on) from unstable? With pbuilder, you are using the latest. > be pulled in. I do observe that lapack3-dev has the following > dependencies: > > Depends: lapack3 (= 3.0.20000531a-6.1), libc6-dev, atlas3-base-dev | > refblas3-dev | libblas-3.so, g77 > > However, libitpp uses the following dependencies: > Build-Depends: debhelper (>= 5), autotools-dev, doxygen (>= 1.5.1-1), > refblas3-dev, libfftw3-dev, texlive-latex-base, gs, lapack3-dev > > Clearly, refblas3-dev is provided, so lapack3-dev shouldn't need > atlas3-base-dev, right? What am I missing? I would say that the order of resolving dependencies may be different for different programs. Consider this: Option 1: You install refblas3-dev and then lapack3-dev, so atlas3-base-dev is not brought in because refblas3-dev exists. Option 2: The buildd gets the lapack3-dev and hence atlas3-base-dev first and then it gets refblas3-dev. But, when you build the package, if there is a check (maybe via the configure script) for atlas3-base-dev and then for refblas3-dev, in Option 1, refblas3-dev is used and in Option 2 atlas3-base-dev is used. (I did not verify the above, but this is a possible explanation). If you want to avoid the above, you should Build-Depends: lapack3-dev | refblas3-dev. You should be good with just a Build-Depends: lapack3-dev but the "| refblas3-dev" helps backporters (if lapack3 doesn't depend on refblas3-dev in its older versions). Giridhar -- Y Giridhar Appaji Nag | http://www.appaji.net/
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