instructions for compiing ETA from source

You are on the right track. Run cmake at the top level of Elektron SDK, according to your build platform, and make sure the build completes without errors.

For example:

cmake -G "Visual Studio 16 2019" -A x64
cmake -G "Visual Studio 15 2017 Win64"

cmake -G "Unix Makefiles" -DCMAKE_BUILD_TYPE=Debug

Please refer to CMAKE Generators for more information

umer.nalla

Hi @nrai

Also, did you refer to the ElektronSDK C installation guide on Github?

You can reach it by clicking on the Elektron Transport API - C Edition link under the Documentation paragraph. The document has a section on Building Wndows and Linux versions.

nrai

thanks for the info Zoya and Umer. I am waiting for cmake 3.10.3 to be installed on my build machine. I'll post in a few days if I have problems building.

nrai

 cmake3 -G "Unix Makefiles" -DCMAKE_BUILD_TYPE=Debug -DBULD_EMA_UNIT_TESTS=OFF -DBUILD_EMA_LIBRARY=OFF -DBULD_EMA_EXAMPLES=OFF

I get the following error building with cmake 3.13.1. Pls advise on next steps.

I do not want to build any extra stuff except bare minimum to run .How do I avoid open ssl dependency?

CMake Error at /usr/share/cmake3/Modules/FindPackageHandleStandardArgs.cmake:137 (message):   Could NOT find OpenSSL, try to set the path to OpenSSL root folder in the   system variable OPENSSL_ROOT_DIR (missing: OPENSSL_CRYPTO_LIBRARY   OPENSSL_INCLUDE_DIR) Call Stack (most recent call first):   /usr/share/cmake3/Modules/FindPackageHandleStandardArgs.cmake:378 (_FPHSA_FAILURE_MESSAGE)   /usr/share/cmake3/Modules/FindOpenSSL.cmake:412 (find_package_handle_standard_args)   CMakeLists.txt:350 (find_package) -- Configuring incomplete, errors occurred! See also "Reuters/Elektron-SDK/external/BUILD/curl/source/CMakeFiles/CMakeOutput.log". See also "Reuters/Elektron-SDK/external/BUILD/curl/source/CMakeFiles/CMakeError.log". gmake[2]: *** [curl-prefix/src/curl-stamp/curl-configure] Error 1 gmake[1]: *** [CMakeFiles/curl.dir/all] Error 2 gmake: *** [all] Error 2 CMake Error at CMake/rcdevExternalUtils.cmake:189 (message):   External Project Build step for curl in   /Reuters/Elektron-SDK/external/BUILD/curl failed: 2 Call Stack (most recent call first):   CMake/addExternal_curl.cmake:188 (rcdev_config_build_ep)   CMakeLists.txt:35 (include) -- Configuring incomplete, errors occurred! See also "Reuters/Elektron-SDK/CMakeFiles/CMakeOutput.log".

zoya faberov

Hello @nrai, Looks like the build is looking for OpenSSl library. In my understanding, libcurl and openssl are required to build ESDK1.4

But I have never intended to build minimal, to the contrary, I build ESDK, intending to be able to use all of the functionality, run all of the examples, including encrypted channels, that require OpenSSL to be installed.

I would make sure to include OpenSSL and libcurl dependencies in PATH and LD_LIBRARY_PATH, and see if this resolves your issue, eabling your to build succefully

Alternatively, you may report to ESDK product, on github that you would like to be able to build without OpenSSL and failing to do so (upon examination of the opened issue I do not see this), and possibly find out if this should work in the current release.

nrai

Zoya, the current downloaded libs work for us without open ssl and curl. There should be no need to install them for my purpose .

Also, It is quite possible that buld on github is not same as what I am building. That may explain why looking at source code doesn't explain the error I am getting.

I am an end user of application. I don't have enough bandwidth to be an ETA developer.

Lets' close this issue as unsupported and if I have time in future, I might spend time on this.

zoya faberov

@nrai

I would agree, except I believe you were looking to debug into the library, and that would have been fully transparent, when building from source.

That capability exists, except I do not believe that without the two dependencies.

nrai

Just when I had given up, the admins installed the openssl and libcurl and build completed!

However, I don't see any libs generated. Only under binarypack/cppJ.

Pls advise.

zoya faberov

Hello @nrai,

Glad to hear ESDK has built.

But let me just double-check:

Any errors you see on build, like "not completed" or "not found" or "errors occurred" or etc.?

In Elektron-SDK-1.4.0.L1.linux.rrg/Cpp-C/Eta/Libs/YOURPLATFROM you are not observing any librssl.so and librssl.a ?

Should be the same libraries generated as in pre-built Linux SDK.

nrai

that is correct. I don't see librssl.so in that dir.

I see something in binary pack :

Elektron-SDK-BinaryPack/Cpp-C/Eta/Libs/RHEL6_64_GCC444/Optimized/Shared/librsslRelMcast.so

I see multiple errors like follows:

-- Build files have been written to: Reuters/Elektron-SDK/external/BUILD/cjson/build
[100%] Built target cjson
CMake Error at Cpp-C/Eta/Applications/Training/Consumer/CMakeLists.txt:53 (add_subdirectory):
  The source directory
    Reuters/Elektron-SDK/Cpp-C/Eta/Applications/Training/Consumer/Module_1a_Connect/CMakeFiles
  does not contain a CMakeLists.txt file.

zoya faberov

Hello @nrai,

It does not look like your installation of ESDK has completed successfully. If it did, you should have all the libraries, for instance my folder

Elektron-SDK-1.4.0.L1.linux.rrg/Cpp-C/Eta/Libs/OL7_64_GCC482/Optimized

contains

Shared  libansi.a  librssl.a  librsslVA.a

Shared contains

librssl.so     librssl.so.3.4.0.0  librsslVA.so     librsslVA.so.3.4.0.0
librssl.so.10  librsslUpaJNI.so    librsslVA.so.13

I can not be completely sure at this point what have caused the issue on build, what went wrong, but it does not look to have completed. Right?

This is probably not the only approach, but I would have backed this up, and started from scratch, , and using Elektron SDK Installation Guide as resource.

If you see the same error as you have seen before, it points at OpenSSL missing. I would install OpenSSL (as that was the error you have got on your install before it failed)

And then:

cmake -G "Unix Makefiles" -DCMAKE_BUILD_TYPE=Debug

Just in case, my OpnSSL version looks like this

]# openssl version
OpenSSL 1.0.2k-fips  26 Jan 2017

Sorry for the late response and hope this helps you proceed.

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