Thanks both! Let me try changing ARROW_SUBSTRAIT_URL. Should I set ARROW_SUBSTRAIT_URL just to local substrait tarball or sth else?
On Mon, Jul 18, 2022 at 2:28 PM Yaron Gvili <rt...@hotmail.com> wrote: > Hi Li, > > I was just writing this. > > AFAIK, currently the Arrow C++ build system does not take prebuilt > Substrait C++ classes. The usual way is rebuilding Arrow C++ with a custom > Substrait repository, which is done by setting ARROW_SUBSTRAIT_URL to a > local Substrait repository. You can download this repository offline and > make it available to your internal build system. With this, the Arrow C++ > build system auto-generates the Substrait C++ classes for the local > Substrait repository and builds into "libarrow_bundled_dependencies.a". I > wouldn't recommend doing these auto-generation and build steps on your own, > as you'd have to change the Arrow C++ build system, and specifically > "cpp/cmake_modules/ThirdpartyToolchain.cmake", to enable this. > > > Yaron. > ________________________________ > From: Jeroen van Straten <jeroen.van.stra...@gmail.com> > Sent: Monday, July 18, 2022 2:27 PM > To: dev@arrow.apache.org <dev@arrow.apache.org> > Subject: Re: [C++] Question about substrait dependency in C++ > > Hi, > > I'm not sure I completely understand what you're trying to do, but if lack > of internet access is the only problem, I think you should just be able to > override the URL it tries to download by setting the ARROW_SUBSTRAIT_URL > environment variable to some local file:// URL. I think it should work as > long as the hash matches what Arrow's build system expects from > thirdparty/versions.txt. > > I'm not sure why you're not seeing the library. With `--preset > ninja-debug`, I'm getting a libsubstrait.a in build/debug. I'm not familiar > enough with Arrow's build system to provide more help there. > > Regards, > Jeroen > > On Mon, 18 Jul 2022 at 18:00, Li Jin <ice.xell...@gmail.com> wrote: > > > Hello! > > > > I am working on integrating the latest Arrow C++ into our internal build > > system. Currently I am planning to build substrait C++ classes > > independently and provide header locations and so files to the Arrow > > Cmakefile - I wonder if that is a good approach? (We cannot download the > > substrait tarball in the internal build system when building Arrow) > > > > Also, I don't see a libsubstrait.so or libsubstrait.a in the build > > directory - is that statically linked? > > > > Thanks, > > Li > > >
