How to use a library ported for Native Client(NaCl)? - c++

I was looking at the list of naclports for ported libraries and I want to use openssl for my native client extention. I can't find a proper instruction set to install these ported libraries, I downloaded the openssl compressed file and followed the instructions given in INSTALL file but that encountered some errors which I can't resolve.

To install a library ported to Native Client as part of naclports you'll need to:
Download and install the NaCl SDK:
https://developer.chrome.com/native-client/sdk/download
Set NACL_SDK_ROOT in your environment to point at the pepper_* version under the location you install it at.
You may want to explicitly install the very latest version: pepper_canary, with: ./naclsdk install pepper_canary
Sync the naclports repository: Checkout guide
Check out a branch that matches you SDK, or master for pepper_canary
To build openssl, do something like this:
./bin/naclports --force --from-source install openssl
If you have no local modifications you can drop the --force and --from-source flags
This will build the newlib NaCl version by default.
You can set TOOLCHAIN in the environment to: glibc / pnacl / newlib to select an explicit version.
The library will then be installed into your SDK.

Related

Adding binaries to other peoples conan recipes

I'm using given conan packages
gtest/1.8.0#bincrafters/stable
boost/1.66.0#conan/stable
log4cplus/2.0.2#bincrafters/stable`
and clang (version at least 6.0).
While first two packages has binaries for clang 6.0, log4cplus doesn't (last is clang 3.9). I don't like the idea that on each workstation I would need to build this package by hand.
How can I upload localy build binary with clang 6.0?
conan upload looks promising, however it suggest that it will be NEW package. Second question - wouldn't I interfere with package author in any way?
I do recommend open an issue for Bincrafters, requesting clang 3.9 support: https://github.com/bincrafters/community/issues/
Include a new package configuration is just one line in the Travis recipe.
How can I upload localy build binary with clang 6.0?
You could use JFrog Artifactory, there is a Community Edition with Conan support. Also, you could create a "mirror" for your packages locally with Artifactory, instead to download from Bintray:
https://docs.conan.io/en/latest/uploading_packages/artifactory_ce.html
However, Conan respects your remote list by it order, if your Conan client finds log4cplus first in Bincrafters' remote but the correct binary is only available in your local repository, Conan will ignore your local remote and will show a message error about missed binary package for log4cplus. Thus, in your case, you will need to copy ALL binaries to your local repository.
Regards!
You will find the conan packages installed on your Linux system at .conan/data/package_name/version/repo_name/tag. There will be a package folder inside it. If you want to manually add binaries to existing packages then you can add the binary in /bin folder in packages.
Or else you can look into the conan recipe in exports folder and look for the package, that from where it is getting its binaries from and add that binary in that path.

Qt - How to deploy application dynamically on Linux?

I have an application that I built using Qt Creator on Linux and want to deploy it now. However, I don't want to statically build it as I don't want it to be open-sourced. I tried the ldd ./YourExecutable command, however that only lists (and not add) the additional dependencies the application needs in order for it to run. My question is, how do I gather the necessary dependencies without having to individually look for these files? Is there a tool, such as windeployqt.exe on Windows, that I can use on Linux for the same purpose? Or is there a better approach than the one I'm thinking of?
Get Cygwin setup.exe: http://www.cygwin.com/
1.1. Run setup.exe and continue to package selection list.
1.2. Under Devel catagory select tools you need for compiling your source. For
example 'GNU make'.
1.3. Finish installing.
Get linux crosscompilers for cygwin:
"cygwin-gcc-linux.tar.bz2" (68.2 Mb).
md5sum: 340e91a346f5bb17e660db10e43005b8
These compilers are made with crosstool 0.28-rc37. This package contains:
gcc-3.3.4 and gcc-2.95.3 for i386 (glibc 2.1.3) and gcc-3.3.3 for amd64
(glibc 2.3.2).
Note! There is now newer version of GCC avaible with glibc 2.3.2:
"cygwin-gcc-3.3.6-glibc-2.3.2-linux.tar.bz2 (i386, x86_64)".
2.1. Copy 'cygwin-gcc-linux.tar.bz2' to 'c:\cygwin' or install directory which
you selected in setup.exe.
2.2. Open Cygwin shell and change directory to root with 'cd /'.
2.3. Uncompress to Cygwin root with command:
'tar -jxvf cygwin-gcc-linux.tar.bz2'.
Cross-compilers are installed under '/opt/crosstool'. You can use theim
directly or with commands: gcc-linux, g++-linux, gcc-linux-2.95,
g++-linux-2.95, gcc-linux-x86_64 and g++-linux-x86_64.
From: Cross-compiling on Windows for Linux
More info here.
It sounds like you want to use the shared library deployment option:
http://doc.qt.io/qt-5/linux-deployment.html#creating-the-application-package
Then if you wanted to go further than that, you could look into making a .rpm or a .deb .
There are lots of examples of qt projects that are now available on GitHub and have packages made. Usually for prebuilt binaries you need to make one for x86 and a separate one for x64.
Hope that helps.

RedHawk building from source --- locate the code installing uhd3.5.3

I am trying to build from source for RedHawk installation and trying to replace uhd3.5.3 with a higher version of uhd for USRP_UHD module. I saw USRP_UHD source code, but found nowhere for uhd3.5.3 source code. I am guessing it might simply use "yum install ..." to download and install uhd host code and suporting libraries. Does anybody know where this code is located in redhawk_src_2.0 package? Or is there an efficient way in linux to search for this among all the files in redhawk_src_2.0 package?
Thanks in advance!
UHD is the USRP Harware driver softwware from Ettus Research. The UHD is distributed from:
http://files.ettus.com/binaries/uhd_stable/
Version 3.5.3 is here:
http://files.ettus.com/binaries/uhd_stable/uhd_003.005.003-release/
The current release is 3.9.2:
http://files.ettus.com/binaries/uhd_stable/uhd_003.009.002-release/
Hopefully this helps. I wasn't 100% sure what you are asking for.
First, clone the uhd library:
git clone git://github.com/EttusResearch/uhd.git
Then checkout the 3.9.2 tag:
git checkout release_003_009_002
Using the instructions from Ettus (http://files.ettus.com/manual/page_build_guide.html), install the dependencies listed under the Fedora section:
sudo yum -y install boost-devel libusb1-devel python-mako doxygen python-docutils cmake make gcc gcc-c++
Next, generate the Makefiles with CMake:
cd <uhd-repo-path>/host
mkdir build
cd build
cmake -DCMAKE_INSTALL_PREFIX=/opt/uhd ../
I recommend using an alternate install prefix at first to preserve the 3.5.3 version, just in case, but if you don't want to, just run:
cmake ../
instead of the longer command with the -DCMAKE_INSTALL_PREFIX flag. (Note: I couldn't get cmake to find the installed boost version, so you may have to do some other research on that since it is probably a whole different stackoverflow post in and of itself)
Now build and install the uhd library:
make
make test
sudo make install
Now that the library is installed, you should edit the USRP_UHD/cpp/configure.ac so that the PKG_CONFIG_PATH points to your install prefix (either the one specified in the flag above, or if you did the default, just leave it, as it should already be pointing to /usr/local/lib/pkgconfig). Also in the configure.ac file, make sure to change the uhd version number to 3.9.2.
Now you should be able to rebuild the USRP_UHD Device:
./reconf && ./configure && make install
I don't guarantee that the Device will build against the new version of the uhd library, that will depend on what (if anything) has been deprecated an removed from the library between the supported version and the newest one.
Finally, if you get through all of those steps successfully and if you specified a non-standard install prefix, you will have to add this prefix to either the LD_LIBRARY_PATH or an /etc/ld.so.conf.d/ script in order for the Device to correctly execute.
Clarification - you can follow the Redhawk manual appendix B for building Redhawk from source AFTER installing UHD v3.9.3 from source as per pwolframs instructions. The UHD v3.5.3 is not packaged with the Redhawk source code, only the Redhawk RPM, disregard all those RPMs when building UHD and Redhawk from source.

Does Linux command libboost-all-dev install and compile the header-only libraries?

On Ubuntu there is a command to install boost libraries which is something like this:
sudo apt-get install libboost-all-dev
does this command also install and compile the header-only libraries?
If not, what other terminal command would I need to execute so that I can install the FULL set of boost libraries?
My ultimate aim is to know which linux terminal commands I need to install (and have available) to obtain all of the boost libraries.
As is implied by "header only", one does not need to compile the header-only libraries. They're just headers.
Now, the libbost-all-dev package does install those libraries which need compilation (in addition to the header-only libs), but it does not compile them on the spot. Ubuntu is a so-called binary distribution, which means that it distributes packages in compiled form. Apt downloads the binaries and installs them immediately. This is in contrast to e.g. Gentoo which is a source distribution (and compiles everything on your machine).
In short, no further commands are necessary. Installing libbost-all-dev will install all available Boost libraries on Ubuntu.
Your questions, as posed, makes no sense.
The Debian / Ubuntu package libboost-all-dev has dependencies, and those dependencies do include the few binary library packages (eg Boost Thread, the formatting parts of Boost DateTime, etc pp). All those will get installed.
And yes, the intent of this meta package is to install the rest of the Boost development environment.
But it does not compile anything. All Debian / Ubuntu packages are pre-generated and built-offline and "just installed" at your end.
You can inspect the content of a package by browsing the online database.
But if you are only interested in header-only libraries I suggest to download the latest version of the boost libraries right from the official website; you should also learn how to build boost from the source because it's a know-how that you are very likely to use in a near future if you are relying on that library.
An equivalent step to browsing the online database, it's about using the following command
apt-cache show <package>
so, in your case
apt-cache show libboost-all-dev
and this will give you a very specific idea about what you are about to install.

Needed environment for building gstreamer plugins in Windows

I've been strugling for two weeks to create an environment for building a gstreamer plugin on windows (needed for a songbird addon).
I've installed MSYS, MinGW and Cygwin, then installed GStreamer OSSBuild, and I also downloaded the sources for Songbird, which come with their own precompiled version of gstreamer.
I was unable to run gst-inspect (or any other gstreamer applications) from the songbird sources and I figured I will settle for OSSBuild (as I was able to run gst-inspect from the compiled OSSBuild).
When following the instructions for building a GST plugin (found here) through, cygwin will not recognize the OSSBuild and the build fails when running autogen, with the following error:
checking for GST... no
configure: error:
You need to install or upgrade the GStreamer development
packages on your system. On debian-based systems these are
libgstreamer0.10-dev and libgstreamer-plugins-base0.10-dev.
on RPM-based systems gstreamer0.10-devel, libgstreamer0.10-devel
or similar. The minimum version required is 0.10.16.
configure failed
I could also not use MSYS or MinGW as they are unable to run autogen at all.
I understand that cygwin should have it's own gstreamer development packages but I couldn't find how to install them.
My question: How do I install the gstreamer packages in cygwin or how do I build using cygwin with the OSSBuild dependencies?
In short, how do I get an environment where I can build a gstreamer plugin under windows?
you can install precompiled gstreamer packages for cygwin at cygwinports. there you will find installation instructions and a list of available packages. you should not need to build them from source.
Configure's most likely going to look for libtool (.la) or pkg-config (.pc) files. Since OSSBuild is built using MSVC, you're not likely to get those files so configure can pick them up. However, you can manually create them and set them in a location to be picked up by the script. I do know that OSSBuild does have as its goal to eventually provide Visual Studio-compatible C/C++ project templates for GStreamer plugins as well as libtool and pkg-config files, but they're not available just yet.
If you checkout the OSSBuild source and can follow MSVC property files, you can see how the plugins are setup and configured.