Just tried Vcpkg Manifest on my cmake project and it is cool, with exceptions however.
My project depends on opencv and it takes a long time for vcpkg to install opencv. So I realized I don't want vcpkg downloawding/installing opencv every time I clone the project in a different folder.
Is it possible to use Vcpkg Manifest but make it install libraries system wide instead of locally to the project?
Or at least not inside the build directory, so will be possible to reuse it?
No, you can't install libraries system-wide in manifest mode.
But binaries are cached so that if you use a library in multiple projects, you don't have to build it from scratch.
https://github.com/microsoft/vcpkg/blob/master/docs/users/binarycaching.md
I abused vcpkg's --x-install-root to achieve similar results as manifest mode.
--x-install-root= (Experimental) Specify the install root directory
Under your project folder, you can install this project's dependencies into a system global directory by using this parameter, so that all projects can share the installed packages system wide. For example, in my case, I installed all packages into $VCPKG_ROOT/installed directory like this:
vcpkg install --x-install-root=$VCPKG_ROOT/installed
You can even use vcpkg list anywhere if you (ab)use it this way.
I want to use conan to download and build some libraries in a specific folder.
The idea is that everything included in the export_sources field must be downloaded in a given folder from which I run the conan install command, and not in ~/.conan/data.
Once that is done, I want to move the downloaded files into separate directories (namely include, src, ...) starting from the given folder and then build the library.
Is there any way to do this?
Thanks in advance!
Some time ago I installed gloox library with the command sudo apt-get install libgloox-dev.
But it is not working in netbeans, for example. I noticed that there are only .h files (with only function declarations) in /usr/include/gloox directory. Need your help...
You need to configure your project dependencies in order to use a library.
Are you able to access Gloox files using <> ? If yes the environment variable is set correctly (should be done automatically in Ubuntu)
The library (.so file) will be in /usr/local/lib. You need to link the project against it in your makefile. On netbeans I think it's on project properties->c++ compiler. Personally, I use Cmake to generate my makefiles
Try to download library from http://camaya.net/gloox/download and follow installation instructions.
I have a large, crossplatform, python-dependent project, which is built by CMake.
In linux, python is either preinstalled or easily retrived by shell script. But on windows build, i have to install python manually from .msi before running CMake. Is there any good workaround using cmake scripts?
PS All other external dependencies are downloaded from dedicated FTP server.
Python doesn't really have to be installed to function properly. For my own CMake based projects on Windows, I just use a .zip file containing the entire python tree. All you need to do is extract it to a temporary directory, add it to your path, and set your PYTHONHOME/PYTHONPATH environment variables. Once that's done, you have a fully operational Python interpreter at your disposal. About the only 'gotcha' on Windows is to make sure you remember to copy the Python DLL out of C:\Windows\system32 into the top-level Python directory prior to creating the .zip.
I've recently got acquainted with Boost library and I'd like to use it in my Xcode project. But sadly there is no HowTo or FAQ on how to do it :(
What's the sequence of actions to build and use Boost libraries in Xcode?
The easiest way I've found to do it is to install MacPorts, then you can install/build Boost via a single command:
sudo port install boost
Plus you get similar access to other open source software. The only downside I've found is that, like any other package management system, they are not always up to date with the latest version.
If you prefer Homebrew as your package manager, the command is:
brew install boost
I don't know how to use Boost from XCode (I'm not a Mac programmer), but building boost is usually done through their own build tool, bjam.
They have a guide to building boost here, and you can download the latest version of bjam here
Once it is built, you reference it from Xcode the same way you would any other library. The boost/include should be added to your include path, and the libraries in boost/lib can be referenced for the boost libs that require it.
To build boost on a mac, follow the unix variants getting started page (http://www.boost.org/doc/libs/1_39_0/more/getting_started/unix-variants.html). You won't use Xcode directly to perform the build, but once complete you can add the boost include paths and dylib's to your Xcode project.
I found that to build Boost 1.41.1 on MacOS, you need to do the following:
Download boost 1.46.1 from here: http://sourceforge.net/projects/boost/files/boost/1.46.1/
Unpack the file
Open terminal, cd to the install directory, and do the following:
chmod u+x configure.sh
cd tools/build/v2/engine/src
chmod u+x build.sh
Then go back to the install directory, and:
./configure.sh
If that runs successfully, it will tell you to run:
./bjam
That's it.. for whatever reason, I needed to set those permissions manually before it would work.
su - root
enter root password and then run below as root
/opt/local/bin/port install boost
If you have never logged in as root or forgotten your password, here are the steps to reset root password
http://support.apple.com/kb/HT1528?viewlocale=en_US&locale=en_US
For most of the boost libraries, there's nothing to build, it's all in header files.
The remainder of the instructions are here.
Currently I'm very happy with using Pete Goodliffe's script which builds a framework from the Boost source package for both iOS and Mac. Drag and drop it into a project and it works!
There are multiple versions of the script out there. Here's one:
https://gist.github.com/faithfracture/c629ae4c7168216a9856/61be257e1c0839c85743777d0687becad9913bf7
Elaboration of Ferrucio's answer:
Install Boost using MacPorts (sudo port install boost) or Homebrew (brew install boost).
Find the path to the Boost header files (it should be in /opt/homebrew/include if you're using Homebrew).
Add the path to System Header Search Paths in the Build Settings of your Xcode target.
IMPORTANT NOTE: If you add the path to User Header Search Paths instead of System Header Search Paths, as other users suggested, then your code will fail to build, since the Boost files use angled-includes (#include <boost/filename.hpp>) to include each other. Angled-includes are only for including system library headers, and thus they only work if Boost is in the System Header Search Paths.
You can read about the difference between angled-includes and quoted-includes here.