I am trying to download DL4J source without error.
https://github.com/deeplearning4j/deeplearning4j
I cloned https://github.com/deeplearning4j/deeplearning4j.git
and imported using existing Maven project in Eclipse.
Tons of dependencies are downloaded but it's bombarded with errors.
Anyone who knows which branch version is free of compile error?
The site says 0.9.1 is most stable version, but it still generates errors.
So there's a few things here:
No major open source project in today's day and age operates without a build system. This can be maven,gradle,sbt,..
You ignored all of our docs about building from source and the like. You don't need to do that. Use the build system like it's intended.
My suggestion here:
Learn what the rest of the java world did and use maven:
Our quick start is here: http://deeplearning4j.org/quickstart
Follow our examples for the latest versions:
https://github.com/deeplearning4j/dl4j-examples
Chances are you do not need to build from source (this involves 5 other projects you probably do not want to do that) - but if you absolutely must be prepared to use c++ among other things.
The guide for that can be found here:
https://deeplearning4j.org/devguide
Related
I know there are ways of using Tensorflow in C++ they even have a documentation for it but I can seem to be able to get the library for it. I've checked the build from source instructions but it seems to builds a pip package rather than a library I can link to my project. I also found a tutorial but when I tried it out I ran out of memory and my computer crashed. My question is, how can I actually get the C++ library to work on my project? I do have these requirements, I have to work on windows with Visual Studio in C++. What I would love to is if I could get a pre-compiled DLL that I could just link but I haven't found such a thing and I'm open to other alternatives.
I can't comment so I am writing this as an answer.
If you don't mind using Keras, you could use the package frugally deep. I haven't seen a library myself either, but I came across frugally deep and it seemed easy to implement. I am currently trying to use it, so I cannot guarantee it will work.
You could check out neural2D from here:
https://github.com/davidrmiller/neural2d
It is a neural network implementation without any dependent libraries (all written from scratch).
I would say that the best option is to use cppflow, an easy wrapper that I created to use Tensorflow from C++ easily.
You won't need to install anything, just download the TF C API, and place it somewhere in your computer. You can take a look to the docs to see how to do it, and how to use the library.
The answer seems to be that it is hard :-(
Try this to start. You can follow the latest instructions for building from source on Windows up to the point of building the pip package. But don't do that - do this/these instead:
bazel -config=opt //tensorflow:tensorflow.dll
bazel -config=opt //tensorflow:tensorflow.lib
bazel -config=opt tensorflow:install_headers
That much seems to work fine. The problems really start when you try to use Any of the header files - you will probably get compilation errors, at least with TF version >= 2.0. I have tried:
Build the label_image example (instructions in the readme.md file)
It builds and runs fine on Windows, meaning all the headers and source are there somewhere
Try incorporating that source into Windows console executable: runs into compiler errors due to conflicts with std::min & std::max, probably due to Windows SDK.
Include c_api.h in a Windows console application: won't compile.
Include TF-Lite header files: won't compile.
There is little point investing the lengthy compile time in the first two bazel commands if you can't get the headers to compile :-(
You may have time to invest in resolving these errors; I don't. At this stage Tensorflow lacks sufficient support for Windows C++ to rely on it, particularly in a commercial setting. I suggest exploring these options instead:
If TF-Lite is an option, watch this
Windows ML/Direct ML (requires conversion of TF models to ONNX format)
CPPFlow
Frugally Deep
Keras2CPP
UPDATE: having explored the list above, I eventually found the following worked best in my context (real-time continuous item recognition):
convert models to ONNX format (use tf2onnx or keras2onnx
use Microsoft's ONNX runtime
Even though Microsoft recommends using DirectML where milliseconds matter, the performance of ONNX runtime using DirectML as an execution provider means we can run a 224x224 RGB image through our Intel GPU in around 20ms, which is quick enough for us. But it was still hard finding our way to this answer
Simple question, where do I actually download the FlexUnit binary? I've found:
https://cwiki.apache.org/confluence/display/FLEX/FlexUnit+Getting+Started
and
https://github.com/flexunit/flexunit
The links on the first go to www.flexunit.com which doesn't appear to exist.
The second has all the source code, but no build instructions.
FlexUnit donation to Apache Flex is currently in progress and has yet to be formulated into a release. Meanwhile you can find a nightly build at https://builds.apache.org/job/flex-flexunit/ws/ (flexunit-*.zip).
Update
An official release can now be downloaded at:
http://flex.apache.org/download-flexunit.html
You can either use Maven to get access to Flexunit like in this question here:
How do I get Flexunit, FlexMojos and Mockolate to work together?
Or you can download flexunit from various open source projects like here:
https://github.com/mikechambers/as3corelib/tree/master/build/libs
I've been trying for about 2 weeks now to get a logging library to work with. I've tried Log4cxx, Log4cpp, log4cplus and boost.log. The problem isn't that none of these work for me, it's that I can't figure out how to get them to work at all. I would really like to use log4cxx since I'm working with log4j/logback at work, but I haven't been able to get any of the libraries based on log4j to build. I've been able to build and use the boost library, but boost.log gives me all kinds of linker errors no matter what I try. If anyone could direct me to a step-by-step guide to get one of these libraries working I would greatly appreciate it. Also, I'm using eclipse as my IDE if that matters.
Did you ever get this working? Log4cxx definitely works on Win7. Maybe you could post some of your build errors. Just guessing, perhaps you didn't configure your eclipse project to link with a log4cxx static lib.
Boost.Log works for me quite well (Linux and Windows). It is not a header only library, there is a compiled part that you need to link against. See instructions here.
It also depends on other, non-header, Boost libraries:
The logging library uses several other Boost libraries that need
building too. These are Boost.Filesystem, Boost.System,
Boost.DateTime, Boost.Thread and Boost.Regex. Refer to their
documentation for detailed instructions on the building procedure.
Depending on your platform there may be pre-built versions of the Boost libraries. Otherwise building it yourself is straightforward if you follow the instructions. If you get stuck update your question with where exactly you got stuck and what you're seeing.
I'd recommend Pantheios. It takes some time to build everything when you first download - type make build test and go have lunch - and you have to select the output streams (Pantheios calls them "back ends") at link time, but for coding, it is really simple, e.g.
std::string name;
int age;
pantheios::log_DEBUG("name=", name, " age=", pantheios::integer(age));
It's designed from the ground up for speed - the age won't be converted into a string unless the "DEBUG" level is switched on - and robustness - which is why you can't pass fundamental types directly, and use "inserters" (e.g. pantheios::integer). See this recent blog post by Pantheios' author for more information.
I managed to get log4cxx to work, this was done in Visual Studios 2013 running on Windows 7 OS.
This following is what I did, step by step:
Download the log4cxx ZIP package extract its contents, http://logging.apache.org/log4cxx/download.html
Download apr and apr-util ZIP packages, http://apr.apache.org/download.cgi
Then
manually extract this zip apr-1.2.11-win32-src.zip (the
extracted folder should be named 'apr', if it is not manually rename
it)
manually extract this zip apr-util-1.2.10-win32-src.zip (the
extracted folder should be named 'apr-util', if it is not manually
rename it)
open a command prompt and run the following: cd
apache-log4cxx-0.10.0 configure (this
will execute configure.bat)
We will need to disable to use of the APR ICONV and LDAP support.
In order to do so, we will append the following files manually:
Open apr-util\include\apu.hw. Find the line starting with “#define
APU_HAVE_APR_ICONV”. Change the value to 0 and save.
Open apr-util\include\apr_ldap.hw. Find the line starting with
“#define APR_HAS_LDAP” Change the value to 0 and save.
We need to build the log4cxx.dll, to do so convert *.dsw
to *.cxproj.
Launch Visual Studio 2013 and open log4cxx.dsw.
VS will ask if you like to convert everything. Simply click Yes.
There may be some warnings in the migration report, but nothing that
should prevent the solution from opening.
> The projects xml, apr, and apr-util should build successfully.
If you try compiling the log4cxx project it will most
likely fail with hundreds of errors. This is due to a bug in VC++
which can be worked around.
Move all macros outside (above) the class they are in.
LOG4CXX_LIST_DEF macro is used to define classes. All macros reported in error C2252 will need to move out of any classes. This
may also include moving definitions which are used in the macro.
Next, change all LoggingEvent::KeySet to KeySet (this is no longer nested in a parent class)
> Following this, the log4cxx project should now compile
successfully on your machine.
I am using Eclipse for C++ development on windows. I have also written a code generator that take an xml file and produces several C++ files. The project I am working on is currently setup to use the internal builder. What I would like to do is to run the code generator as part of the build process.
My problem is that I haven't been able to find a way to make Eclipse identify that the files are present (or have been updated) without 'Refeshing' the project. So although I can run the code generator as a pre-build step, the files generated aren't guaranteed to be included in the build.
Does anybody know whether there is a way to make Eclipse do a refresh after the pre-build step or something to that effect, using the internal builder?
Thanks
You can add a Builder to your project.
I'm not sure if this is possible using the internal builder of Eclipse. Refreshing has always been a problem there. But using external build tool, like Maven or Ant, works! I personally would switch to Visual Studio - there you never have such kind of problems
Although I have not tried this with CDT projects enabling the the Preferences->General->Workspace -> Refresh automatically helps me with Web & Java projects where code generation is involved.
we work under Linux/Eclipse/C++ using Eclipse's "native" C++ projects (.cproject). the system comprises from several C++ projects all kept under svn version control, using integrated subclipse plugin.
we want to have a script that would checkout, compile and package the system, without us needing to drive this process manually from eclipse, as we do now.
I see that there are generated makefile and support files (sources.mk, subdir.mk etc.), scattered around, which are not under version control (probably the subclipse plugin is "clever" enough to exclude them). I guess I can put them under svn and use in the script we need.
however, this feels shaky. have anybody tried it? Are there any issues to expect? Are there recommended ways to achieve what we need?
N.B. I don't believe that an idea of adopting another build system will be accepted nicely, unless it's SUPER-smooth. We are a small company of 4 developers running full-steam ahead, and any additional overhead or learning curve will not appreciated :)
thanks a lot in advance!
I would not recommend putting things that are generated in an external tool into version control. My favorite phrase for this tactic is "version the recipe, not the cake". Instead, you should use a third party tool like your script to manipulate Eclipse appropriately to generate these files from your sources, and then compile them. This avoids the risk of having one of these automatically generated files be out of sync with your root sources.
I'm not sure what your threshold for "super-smooth" is, but you might want to take a look at Maven2, which has a plugin for Eclipse projects to do just this.
I know that this is a big problem (I had exactly the same; in addition: maintaining a build-workspace in svn is a real pain!)
Problems I see:
You will get into problems as soon as somebody adds or changes project settings files but doesn't trigger a new build for all possible platforms! (makefiles aren't updated).
There is no overall make file so you can not easily use the build order of your projects that Eclipse had calculated
BTW: I wrote an Eclipse plugin that builds up a workspace from a given (textual) list of projects and then triggers the build. That's possible but also not an easy task.
Unfortunately I can't post the plugin somewhere because I wrote it for my former employer...