Thanks both for the detailed explanations. Couple of more questions: Is it easy to create a build which will build dependencies from source? What guarantees you get with conan with regards to ABI / C++ stdlib binary compatibility of the pulled dependencies?
Just to clarify: My concerns are in terms of reproducible builds / source only distribution and undefined behaviour due to different compiler / stdlib versions. Are these valid or is it oudated knowledge? Pedro. On Tue, Nov 27, 2018 at 2:34 PM Diego Rodriguez-Losada <diego.rlos...@gmail.com> wrote: > > Hi Pedro, > > Conan is distributed. So besides building from sources the dependencies, it > is also possible to create binaries yourself for those dependencies (with > the existing recipes, or your own recipes), and host them in your own repo > (Bintray OSS repo, or Artifactory). > > This will provide both the security that you own the dependencies binaries > and the convenience and speed of not having to build from sources. Even if > you provide the binaries, consumers can always fallback to build from > sources too. > > Kind regards, > Diego > > El mar., 27 nov. 2018 a las 13:34, Konstantin Ivlev (<tomsks...@gmail.com>) > escribió: > > > Hi Pedro, > > > > yes, you're absolutely right, by default, conan will be pulling prebuilt > > binaries for the libraries from the bintray. > > however, if prebuilt binaries are not available (e.g. because you use some > > different compiler for which we don't have prebuilt binaries), > > or if you want to build binaries yourself for some another reason, > > then libraries always might be built from source (by passing e.g. "--build > > always", "--build missing" or "--build <library>" to the conan install > > command line). > > > > yours sincerely, Konstantin > > > > вт, 27 нояб. 2018 г. в 19:27, Pedro Larroy <pedro.larroy.li...@gmail.com>: > > > > > Hi Konstantin > > > > > > Thanks for this contribution. With your proposed changes, when > > > building MXNet we will be pulling binaries for the libraries managed > > > by conan? > > > > > > > > > Pedro. > > > On Mon, Nov 26, 2018 at 11:43 AM Konstantin Ivlev <tomsks...@gmail.com> > > > wrote: > > > > > > > > Hello, Ivan, > > > > > > > > could you possibly clarify your question (may be explaining the > > use-case > > > > behind it)? > > > > Gradle appears to be build system, AFAIK more popular in Java world. > > > > meanwhile, Apache Incubator MXNet project uses CMake as its build > > system. > > > > please correct me, I am wrong. > > > > in general, conan, as a package manager, is pretty > > build-system-agnostic, > > > > and it may work with arbitrary build systems (to count a few, CMake, > > > > premake, qmake, full list: > > > > https://docs.conan.io/en/latest/reference/generators.html). I don't > > > think > > > > Gradle is exception here. > > > > also, for instance, Android Studio also uses Gradle for Android C++ > > > > projects, and conan works flawlessly in this particular case ( > > > > > > https://blog.conan.io/2018/02/13/Android-Studio-project-Conan-Boost.html > > > ). > > > > > > > > yours sincerely, Konstantin > > > > > > > > пн, 26 нояб. 2018 г. в 16:43, Ivan Serdyuk < > > local.tourist.k...@gmail.com > > > >: > > > > > > > > > Kostantin, and what (overall) option with using Gradle? Does this > > your > > > > > suggested package manager has been supported by Gradle? > > > > > > > > > > Ivan > > > > > > > > > > On Mon, Nov 26, 2018 at 9:43 AM Konstantin Ivlev < > > tomsks...@gmail.com> > > > > > wrote: > > > > > > > > > > > hello, > > > > > > > > > > > > this email is related to the following PR and JIRA ticket: > > > > > > - [MXNET-1229] use OpenBLAS, lapack & OpenCV from conan > > > > > > <https://github.com/apache/incubator-mxnet/pull/13400> > > > > > > - use conan to manage project dependencies > > > > > > <https://issues.apache.org/jira/browse/MXNET-1229> > > > > > > > > > > > > conan <https://conan.io> is an open-source package manager for C++ > > > > > > projects. it allows to manage project dependencies in transparent > > and > > > > > > declarative manner. > > > > > > > > > > > > currently, apache incubator-mxnet project uses the following > > > different > > > > > > ways to manage its dependencies: > > > > > > > > > > > > - download GitHub archives during the build > > > > > > - OpenBLAS <https://github.com/xianyi/OpenBLAS> > > > > > > - OpenCV <https://github.com/opencv/opencv> > > > > > > - conda <https://conda.io/> (alternative way to GitHub archives) > > > > > > - download from CMake > > > > > > - Intel Math Kernel Library < > > > https://software.intel.com/en-us/mkl> > > > > > > (MKL) > > > > > > - Git submodules > > > > > > - cub <https://github.com/dmlc/cub> > > > > > > - dlpack <https://github.com/dmlc/dlpack> > > > > > > - dmlc-core <https://github.com/dmlc/dmlc-core> > > > > > > - googletest <https://github.com/abseil/googletest> > > > > > > - mkldnn <https://github.com/intel/mkl-dnn> > > > > > > - mshadow <https://github.com/dmlc/mshadow> > > > > > > - onnx-tensorrt <https://github.com/onnx/onnx-tensorrt> > > > > > > - openmp <https://github.com/llvm-mirror/openmp> > > > > > > - ps-lite <https://github.com/dmlc/ps-lite> > > > > > > - tvm <https://github.com/dmlc/tvm> > > > > > > > > > > > > this appears to be very heterogeneous and hard to manage/maintain, > > as > > > > > > multiple various commands are in use to achieve dependencies > > > > > installation, > > > > > > as well as multiple places are to look for dependency versions and > > > their > > > > > > updates. > > > > > > > > > > > > with conan, it may became much more straightforward, as > > dependencies > > > will > > > > > > be declared in single place (conanfile) and installed via single > > > command > > > > > > (conan install). > > > > > > > > > > > > as project is very complex, and has lots of dependencies, for the > > > first > > > > > > prototype I've used only very few of dependencies from conan: > > OpenCV > > > > > > <https://bintray.com/conan-community/conan/opencv%3Aconan>, > > OpenBLAS > > > > > > <https://bintray.com/conan-community/conan/openblas%3Aconan> and > > > lapack > > > > > > <https://bintray.com/conan-community/conan/lapack%3Aconan>. > > > > > > others may be easily added then one by one, but they first has to > > be > > > > > > packaged (not all of them are packaged yet, e.g. GoogleTest > > > > > > <https://bintray.com/bincrafters/public-conan/gtest%3Abincrafters> > > > is > > > > > > available, while MKL is not). > > > > > > > > > > > > I attach patch which adds an initial conan support as proof of > > > concept. > > > > > > also, I attach two simple build scripts, which I've used to test > > (for > > > > > > Windows and Linux / Mac OS X). Google Mail blocks .sh and .cmd > > > > > extensions, > > > > > > so you'll need to rename files. > > > > > > lemme know if you have any further questions. > > > > > > > > > > > > yours sincerely, Konstantin > > > > > > > > > > > > > > > >
