On Sun, Jan 22, 2023 at 7:07 AM Ashish Kumar <ash...@racloop.com> wrote:
> See, what I have done the following steps on my macOS: > > -> brew install cmake > -> brew install melt > -> cloned this repository https://github.com/mltframework/mlt > > Now for these java bindings to work, should I run the code directly in > https://github.com/mltframework/mlt/tree/master/src/swig/java > Or are there any further requirements. > The java binding is not built by default, and most pre-built packages do not include any language bindings for MLT other than C++ and Python. As noted in the README: "More information on usage is found by viewing `CMakeLists.txt`" CMake is the most popular build system now for C++, but it does not provide something like a `./configure --help`! Rather, often the CMakeLists.txt is simple enough to read and discover the options, and that is the case for MLT: you need to add `-DSWIG_JAVA=ON` to the command line when calling cmake to configure the build. > > I have tried running commands > -> cmake . > -> cmake —build . > But getting this error > Undefined symbols for architecture arm64: > > You will need to work through this problem, and it might not be easy. I have not heard of anyone trying to build MLT with Java for macOS/arm64 that can just help. I have experience with building on macOS/arm64, but I use MacPorts and not Homebrew. Does Homebrew provide build dependencies when installing a package or have separate dev(el) packages like many Linux systems? Is Homebrew a pure arm64 or a full universal system on Apple Silicon? If not, then perhaps it is installing some x86_64 only architecture binaries, but you may be building arm64 only or both. In my experience, the binary architecture needs to match through the full chain of linkage dependencies. On MacPorts, I am able to set which architectures to build including both and to build everything from source; so I can be sure no x86_64-only binary is included. Honestly, I think this aspect is a big enough problem that if you are inexperienced you should work on an Intel system to start and try to get something working. Or, possibly try working in a x86_64 Linux virtual machine or in a Docker container on your ARM macOS system. > I want your help on what approach should I follow for this for the java > bindings to work. > > Thanks > > > On 22-Jan-2023, at 7:41 PM, Brian Matherly <brian.mathe...@yahoo.com> > wrote: > > > Currently what I am thinking is of using swig for the code conversion > that would change my java code to c/c++ code that mlt will use. > > I hope you mean the other way around - make Java bindings for MLT so that > you Java application can use it. > > MLT already has Java bindings using SWIG: > > https://github.com/mltframework/mlt/tree/master/src/swig/java > > ~Brian > > > On Sunday, January 22, 2023 at 07:27:47 AM CST, Ashish Kumar < > ash...@racloop.com> wrote: > > > Hi there, > I want to implement this mlt framework in java, for various video editing > things. Can you guide me a way through it. > > Currently what I am thinking is of using swig for the code conversion that > would change my java code to c/c++ code that mlt will use. > Correct me if I am wrong. > > Can you guide me through this. > Thanks > > _______________________________________________ > Mlt-devel mailing list > Mlt-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/mlt-devel > > > _______________________________________________ > Mlt-devel mailing list > Mlt-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/mlt-devel >
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