I would like to run scons from a directory different from the one which contains the SConstruct file. This directory is upstream in the hierarchy.
I know the command scons -u will search upwards in the directory tree for an SConstruct file. Does an option exist which will search downwards ?
Thanks
as #hcorg above stated:
scons -C <path to your subdir>
Related
Using any of the standard Robot libraries, is it possible to recursively copy the contents of a directory to an existing destination directory?
Basically, I'm looking for the equivalent of the following shell command: cp -r foo/. bar (note the trailing dot)
I tried Copy Directory but this creates a directory foo inside bar (as documented) and it doesn't stop doing that even when supplying the trailing dot. Copy Files chokes when it encounters a directory.
Is there anything I overlooked? Or do I need to just call cp -r myself?
As I only need this to work on Linux, I ended up implementing a custom keyword calling cp -r. If this is ever needed cross-platform, then I'll follow the suggestions to directly implement it in Python.
Copy Directory Contents
[Documentation] Recursively copies the contents of the source directory into the destination.
[Arguments] ${source} ${destination}
Directory Should Exist ${source}
Directory Should Exist ${destination}
${result} = Run Process cp -r ${source}/. ${destination}/
Should Be Equal As Integers ${result.rc} 0
I was trying to deploy my application on Ubuntu 16.04. So i made a package with the following hierarchy -
Package
|
----bin
|
-----application
-----application.sh
-----Qt
|
-----necessary qt libraries
-----platforms
Here is the application.sh file -
#!/bin/sh
export LD_LIBRARY_PATH=`pwd`/Qt
./application
When i execute the application.sh file, it shows me that it cant find the libQt5MultimediaWidgets.so.5 file. But its in the Qt folder. Also when i print the ldd application from the application.sh file after exporting LD_LIBRARY_PATH it gives me following output -
Please check the marked parts. Can anyone please explain why the libraries from the Qt folder are not found even after exporting the LD_LIBARRY_PATH?
Edit:
So as suggested by #Zang, i have checked the debug log and here it is -
Please check the marked parts.
It seems like its actually trying the actual libQt5MultimediaWidgets.so and then report that its unable to find it. Can anyone please help me understand whats happening here?
Edit-2: As per suggestion from #Tarun, i have ran ls -al on my Qt folder. Here is the output -
All files in Your Qt directory are actually simlinks to non-existing files in the same directory, therefore they cannot be found.
If you look at the output of your ls -al
These are soft links that you have. Your softlink libQt5MultimediaWidgets.so.5 points to libQt5MultimediaWidgets.so.5.9.2 in the same directory and the file is not there at all. So you need to either set the correct softlink path or have the file in same directory
First
Could it be that the pwd is not where you assume it is?
You could try adding
# Figure out where the application.sh script is located
scriptpath="$( cd "$(dirname "$0")" ; pwd -P )"
# Make sure our pwd is that location
cd "$scriptpath"
in the top of your script (assumes bash shell, from here)
By doing this all relative paths to Qt folder will be valid.
Second
Maybe you should considder exporting your new LD_LIBRARY_PATH, like so (from here):
LD_LIBRARY_PATH=whatever
export LD_LIBRARY_PATH
Third
It may be useful to run ldconfig command for ld to update after changing the variable (from here):
sudo ldconfig
The file libQt5MultimediaWidgets.so is not present in /Desktop/package/bin/Qt according to the screenshots shown.
I would like to install GHC 7.8.1, but would like to assign it different commands, so as not to clash with 7.6.3. For example:
runghc with runghc7.8.1
ghci with ghci7.8.1
etc...
Or similar. (ghci would be most important, for typed holes.)
Basically, I want to be able to use GHC 7.8 and 7.6, so if there is a more direct way to do this tell me (A-B problem.)
Note: Ubuntu 13.10
Because you are on a unix-like system (Ubuntu) you can do the following:
Choose a folder you like for installing ghc (e.g. in a subfolder of your home directory like $HOME/ghc7.8.1 or in a subfolder of /opt like /opt/ghc7.8.1 – I would prefer the later one if you are the only user of your computer and the first one if this isn't the case). See this wikipedia article for explanations about the unix directory structure.
Download the source code into that folder and follow the installation instructions:
See also https://ghc.haskell.org/trac/ghc/wiki/Building/Using#Runtheconfigurescript
In configure setp its important, that you set the --prefix to the folder you have chosen above (if you don't do this, ghc will be installed in /usr/local/ which you do not want)! For example:
./configure --prefix=/opt/ghc7.8.1
After the installations look for the folder with the created binaries (it will be called bin if you did not use another name for bindir). Lets imagine this folder is /opt/ghc7.8.1/bin.
Now you have two possibilities:
Solution with creating symlinks: Create symlinks in a folder which is in your $PATH pointing to the created binaries (for example /usr/local/bin or $HOME/bin – I would use the first one, if you are the only user on your computer and the second if, if you are not). Therefore you have to use the command line tool ln. For example:
sudo ln -s -T /opt/ghc7.8.1/bin/runghc /usr/local/bin/runghc7.8.1
After this command there is a file /usr/local/bin/runghc7.8.1 pointing to the binary /opt/ghc7.8.1/bin/runghc. Executing /usr/local/bin/runghc7.8.1 via typing runghc7.8.1 will now execute the runghc binary created in /opt (Note: sudo is not necessary if you create your symlink in $HOME/bin – it is just needed because root can create files under /usr)
Solution with bash aliases: Write in your $HOME/.bash_aliases (#Others: you can alternatively choose $HOME/.bashrc or $HOME/.profile depending of your system/preference) the following line:
alias runghc7.8.1='/opt/ghc7.8.1/bin/runghc'
Now typing runghc7.8.1 in your terminal is an shortcut (alias) for typing /opt/ghc7.8.1/bin/runghc and will execute this binary.
Note, that with this solution typing runghc7.8.1 will just work, when you typed it into your terminal. There are cases, when it does not work (for example calling runghc7.8.1 in a script).
Prolog: I'm an idiot for missing this in the documentation
cmake-2.8.10.2
How do you make cmake preserve the original file permissions when installing a directory? For the project at hand, I'd like it to essentially copy some directories from my source tree to the install tree. To wit:
install(
DIRECTORY config runp
DESTINATION ${CMAKE_INSTALL_PREFIX}
PATTERN ".svn" EXCLUDE
PATTERN ".git" EXCLUDE
PATTERN "start_collection.snl" EXCLUDE
)
All works as expected -- except that executable scripts are getting copied in with incorrect file permissions. In fact, none of the original file permissions are preserved. Globally setting permissions using FILE_PERMISSIONS and DIRECTORY_PERMISSIONS is something I do not want to do, and frankly, would be a hack in this context.
In the shell-scripting world, I'd do something simple like this:
for i in config runp ; do
tar cf - $i | tar -C $CMAKE_INSTALL_PREFIX -xf -
done
Documentation suggests using USE_SOURCE_PERMISSIONS when calling install():
install(
DIRECTORY config runp
DESTINATION ${CMAKE_INSTALL_PREFIX}
USE_SOURCE_PERMISSIONS
PATTERN ".svn" EXCLUDE
PATTERN ".git" EXCLUDE
PATTERN "start_collection.snl" EXCLUDE
)
Alternatively, you can use install(PROGRAMS signature of this command. See docs for more info.
I am trying to untar UNIX-based operating system from a .tar.gz file. In order to do so I use the following command:
tar -xvf rootfs.tar.gz -o
The -o flag is to not to preserve the ownership of the files (it gave some problems). The problem is that when a symbolic link is untared the following message shows up
Cannot create symlink to `toto': Operation not permitted
Moreover, mknod also gives problems
dev/tty0: Cannot mknod: Operation not permitted
I am in a FAT system. Does anyone know how to untar that file?
Thanks in advance
If the file is a tar.gz you must use:
tar -xvzf rootfs.tar.gz
And notice that a FAT filesystem doesn't support symbolic links, so it doesn't know how to make it on that FS, and it explains the Operation Not Permitted Error.
+1 fpr Ivan's answer
please note that:
flags always go right after the name of the command!
you will need to study "man tar" to see what other options you want, e.g. preserve owner, permissions, time-creation date, etc..
The correct answer is that if you're trying to untar a UNIX root file system, that's going to include special files such as device nodes (which is why tar is invoking mknod).
To create those successfully, tar must be allowed to run as root. Therefore, the correct answer is to use sudo, like so:
sudo tar -xvzf rootfs.tar.gz
Try this to untar a tar file. Hopefully it will work fine without any problem, as this one solved my issue
tar -xvvf foo.tar