I try to install Emscripten following their instructions on the website, but I ran into some weird errors:
When I do ls -l in the command line in the emscripten folder, the command line returns 0, but when I look it up with finder I can find the folder 1.35.0. So I cd 1.35.0
There I try to run ./emcc -v, but I get this error: env: python2: No such file or directory
Does anyone know what I am doing wrong ? Thanks for help.
I'm not sure about your first question, but Emscripten does require a version of Python 2.x called "python2" to be available. It doesn't matter than the Mac OS built-in version is Python 2.7.
Since the OS no longer allows sym-links to files in /usr/bin, I copied mine to /usr/local/bin and just called it python2 there. I'm sure there is a simpler solution, but this works.
Related
➜ YouCompleteMe git:(master) ./install.py --clang-completer
Searching Python 3.7 libraries...
ERROR: Python headers are missing in /Applications/Xcode.app/Contents/Developer/Library/Frameworks/Python3.framework/Versions/3.7/Headers.
I used brew to install python and have not downloaded Xcode
Ended here after having the same problem. The problem in my case was that the python version that was being used was not the correct one. So even after executing:
brew reinstall python3
I was getting the error.
What finally fixed the issue was to explicitly state which python interpreter to use:
/usr/local/bin/python3.9 install.py --all
In my case, I needed to close iTerm and re-open it. So if reinstalling python3 didn't work, try this or alternatively:
source ~/.zshrc
I encountered this problem because of multiple python installations on my machine, one is anaconda python, another is standard python.
I will introduce every step I've done to deal with it.
At first, I used anaconda Python to build YCM. The YCM Server cannot be started and I got the cause from this issue. But when I tried to install YCM using standard Python with the command:
$ /usr/bin/python3 install.py --go-completer --clang-completer --go-completer
The result of execution is an error message as follows:
ERROR: Python headers are missing in /Applications/Xcode.app/Contents/Developer/Library/Frameworks/Python3.framework/Versions/3.9/Headers.
The installation failed; please see above for the actual error. In order to get more information, please re-run the command, adding the --verbose flag. If you think this is a bug and you raise an issue, you MUST include the *full verbose* output.
For example, run:/Library/Developer/CommandLineTools/usr/bin/python3 /Users/jianxue/.vim/bundle/YouCompleteMe/third_party/ycmd/build.py --go-completer --clang-completer --go-completer --verbose
I was so confused for a long time. And at last, I tried to deactivate the anaconda python, and the standard Python was the default one now.
python3 install.py --go-completer --clang-completer --go-completer
Succeed! I guess anaconda overrides the python configurations. Although I used the standard python, the c header for python still couldn't be found by OS.
I'm trying to use the GLPK solver with Pyomo. I have a working model that's been tested, but keep getting an error saying GLPK can't be found.
WARNING: Could not locate the 'glpsol' executable, which is required for solver 'glpk'
I've installed glpk sucessfully. I also added the directory to my path variable so the executed can be called globally. I tested this with glpsol --help from my command line, and see the help info printed.
The below thread says it should be working, but alas, it is not.
How do you install glpk-solver along with pyomo in Winpython
Any ideas?
This answer is late but I want to share the solution that worked for me.
solvername='glpk'
solverpath_folder='C:\\glpk\\w64' #does not need to be directly on c drive
solverpath_exe='C:\\glpk\\w64\\glpsol' #does not need to be directly on c drive
I used to do this:
sys.path.append(solverpath_folder)
solver=SolverFactory(solvername)
This works for the cbc solver in coin-or but it does not work for glpk. Then I tried something different:
solver=SolverFactory(solvername,executable=solverpath_exe)
This worked for both cbc and glpk. No idea why this works (I really didn't do anything else).
Version: Python 2.7 or Python 3.7 (tested both), glpk 4.65
You can install glpk solver using this command -
brew install glpk
Installing the glpk package worked for me. As I use Anaconda:
conda install -c conda-forge glpk
This was after already including the 'glpsol' exectuable's folder path in my PATH variables.
So it looks like the set path variable is not handled by your Python installation.
A normal Python installation is set up for a seperated "PYTHONPATH" environment variable to look up additional modules.
There is also the option to make an entry in the windows registry or (like you already mentioned) move the files to the Python home directory, which is recognized relative to your installation directory if "PYTHONHOME" is not set.
More information in the Python Documentary under 3.3.3.
https://docs.python.org/2/using/windows.html#finding-modules
I was having the same issue. I don't know if this is a solution but it definitely got the solver working.
After downloading the Windows installation. I copied all the files in the w64 folder and pasted them directly into my Python working directory.
After that my python code could locate the solver.
NOTE: this was for Python 3.4.3.4, Windows 8.1 64 bit
Reading the source code here suggests you try:
from pyutilib.services import register_executable, registered_executable
register_executable(name='glpsol')
maybe will it give a clue
I had the same issue on Windows 10 and it was down to glpk being installed in a different conda environment. Full steps for installing pyomo and glpk below.
Test the installation by running 'Repeated Solves' example from https://pyomo.readthedocs.io/en/latest/working_models.html
Instructions (run at an anaconda prompt)
conda create --name myenv
conda activate myenv
conda install -c conda-forge pyomo
conda install -c conda-forge pyomo.extras
conda install -c conda-forge glpk
Run spyder from myenv so that if finds everything
spyder activate myenv
Here is the relevant part where pyomo 6.2 searches for the glpsol executable
https://github.com/Pyomo/pyomo/blob/568c6595a56570c6ea69c3ae3198b73b9f473abd/pyomo/common/fileutils.py#L288
def _path():
return (os.environ.get('PATH','') or os.defpath).split(os.pathsep)
There are two options to solve the PATH problem:
Putting the executable in an available folder in PATH (recommended practice). The glpsol executable must be in one of the folders present in the PATH system environment variable. Use in your code print(os.environ['PATH']) to see the available folders and put it there.
Adding the folder to PATH at runtime. You can add it to the system PATH statically or use code to add it dynamically (only while your script is running):
GLPK_FOLDER_PATH = "path/to/glpk"
os.environ["PATH"] += os.pathsep + str(GLPK_FOLDER_PATH)
In my case, my Python project has a virtual environment .venv, and I have an installation process that pastes the files essential to the glpsol executable when I install the project inside the .venv/Scripts folder. Because that folder is added automatically to the system PATH when Python is called from the virtual environment, libraries like Pyomo can find it. And I don't have to remember to add the folder to PATH at runtime whenever I want to use Pyomo.
For anyone that has the same issue, I found a workaround (not a solution!). I copied all the glpk files into my C:/Python27 directory, and (Surprise!) Python can now find them.
I'll hold out for a real solution before accepting this one.
I have developed some software using Python under Windows 7.
I have given it to a colleague to run on a Mac (OS X 10.9.2). I have never used a Mac and am having trouble helping them to get started. I have downloaded and installed Anaconda 1.9.2 on the Mac. According to the continuum documentation, libtiff is included, but when I run my python file using the Spyder IDE I get the following error when it tries to import libtiff:
ImportError: No module named libtiff.
Following one of the answers on Stack Ooverflow, I tried:
conda install libtiff
This runs and returns:
All requested packages already installed.
However on Windows 7 I can see a libtiff folder under \python27\lib\site-packages. On the Mac there is no libtiff folder under /lib/python2.7/site-packages.
Can anyone tell me what I am missing?
This question is answered here:
Installing Python modules with Anaconda or Canopy
If pip install libtiff does not work, you can download the source for PyLibTiff as directed at https://code.google.com/p/pylibtiff/source/checkout and run setup.py with whichever interpreter you would like for PyLibTiff to be installed to.
Also, you do not have to have the the C libraries that Anaconda installs installed for PyLibTiff to work if you have libtiff libraries installed elsewhere.
Unclear on this. But what you can do to begin with is to type echo $PATH from the terminal and see what paths are set. Unclear on how Anaconda interacts with the system, but a good hunch is that if the library file is not in a path then that would cause this.
Also, looking at this thread on Google Groups it seems that Anaconda installs it’s own libraries that might need to be symbolically linked into the main /usr/local/lib directory. The user Denis Engemann—who made the post—posts this bash script in the last response in the thread:
for lib in ~/anaconda/lib/*;
do
ln -s $lib /usr/local/lib/$(basename $lib);
done
I would recommend checking those two directories first before linking to make sure all is as expected.
I'm trying to install Boost for c++. Since I use cygwin (on Windows 7) I follow these instructions for Unix.
I start by downloading boost_1_55_0.zip from sourceforge. The instructions tell me to run tar --bzip2 -xf /path/to/boost_1_55_0.zip but this doesn't work (probably because the downloaded file is .zip and not .tar.bz2; I can't find the latter anywhere to download), so instead I use winrar and unzip it into /usr/local.
After this the header-only libraries work fine, but I need the ones where a build is necessary.
The instructions tells me to go to the boost folder and run./configure --help, but this doesn't work; I get the message -bash: ./configure: No such file or directory. So I locate the file configure in the folder /usr/local/boost_1_55_0/tools/build/v2/engine/boehm_gc, go there and try again, and this time it works: I get the help for configure.
I then try to run ./configure --prefix=/usr/local/boost_1_55_0 --enable-cplusplus but get the error message configure: error: cannot run /bin/sh ./config.sub. I try it with only one or none of the options too but that doesn't help.
Any ideas?
I don't know what guide you're following, but to install boost I have done:
cd boost
./bootstrap.sh
./b2
./b2 install
stop
As report boost doc:
If you plan to build from the Cygwin bash shell, you're actually
running on a POSIX platform and should follow the instructions for
getting started on Unix variants. Other command shells, such as
MinGW's MSYS, are not supported—they may or may not work.
After upgrading to Lion, and upgrading Xcode, make can't seem to locate headers and libs. I looked in /usr/include. The only thing in there was 'parallels-server'. So, I renamed /usr/include to /usr/include.old, and made a symlink to:
/Developer/SDKs/MacOSX10.6.sdk/usr/include/
This is pretty evil. But, make can now find headers. Still can't locate libs (e.g., lcrt1.10.6.o).
What is the correct way to solve both the include and lib problems?
Thanks!
After downloading Xcode 4 from the App Store, try running "/Applications/Install Xcode.app".
From me, just downloading the Xcode Command line tools did the trick. (For that, of course, I had first to install Xcode itself, which I installed trough App Store.
Start Xcode
Open Xcode→Preferences...
Select the Downloads tab
Install the Command line tools
That installs a few packages, see /var/db/receipts. The package that contains /usr/include is com.apple.pkg.DevSDKLeo.
I don't think xcode-select is needed, but I had run that command before I downloaded the Command line tools, so I don't know for sure.
To get Xcode to populate the /usr/include directory, run the following command:
sudo xcode-select -switch /Applications/Xcode.app/Contents/Developer/
You may need to install the Xcode Command Line Tools within Xcode for this to work. Open the Preferences menu, then under Downloads install Command Line Tools.
The above answer by njamesp also addresses the following error:
configure: error: C compiler cannot create executables
I received this error when trying to compile code on my 10.7 system after setting it up from a 10.5 time machine, so I assume the wrong version of xcode was installed on my system.