pytools.prefork.ExecError: error invoking 'g++-4.2 --version': [Errno 2] No such file or directory

[fusaroli]

First thanks for this very promising project! I am having some issues getting the tests to work.

The installation worked smoothly and I got no error message. But when I try to run the tests I get this (see full version at the bottom):

pytools.prefork.ExecError: error invoking 'g++-4.2 --version': [Errno 2] No such file or directory

I am using OsX 10.10.4 and python 2.7. I wonder whether this is an issue due to changes in OsX compilers. This is my current:

Configured with: --prefix=/Applications/Xcode.app/Contents/Developer/usr --with-gxx-include-dir=/usr/include/c++/4.2.1
Apple LLVM version 6.1.0 (clang-602.0.53) (based on LLVM 3.6.0svn)
Target: x86_64-apple-darwin14.4.0
Thread model: posix

And here the full output of the tests:

  File "tests/gmm_test.py", line 4, in <module>
    from gmm_specializer.gmm import GMM 
  File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/pycasp-0.1-py2.7.egg/gmm_specializer/gmm.py", line 61, in <module>
    class GMM(object):
  File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/pycasp-0.1-py2.7.egg/gmm_specializer/gmm.py", line 69, in GMM
    platform = PlatformDetector()
  File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/asp-0.1.3.1-py2.7.egg/asp/config.py", line 24, in __init__
    self.cuda_util_mod = asp_module.ASPModule(use_cuda=True)
  File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/asp-0.1.3.1-py2.7.egg/asp/jit/asp_module.py", line 352, in __init__
    codepy.toolchain.guess_toolchain(),
  File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/codepy-2013.1.2-py2.7.egg/codepy/toolchain.py", line 415, in guess_toolchain
    result, version, stderr = call_capture_output([kwargs["cc"], "--version"])
  File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/pytools/prefork.py", line 197, in call_capture_output
    return forker[0].call_capture_output(cmdline, cwd, error_on_nonzero)
  File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/pytools/prefork.py", line 54, in call_capture_output
    % ( " ".join(cmdline), e))
pytools.prefork.ExecError: error invoking 'g++-4.2 --version': [Errno 2] No such file or directory
Traceback (most recent call last):
  File "tests/svm_test.py", line 4, in <module>
    from svm_specializer.svm import * 
  File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/pycasp-0.1-py2.7.egg/svm_specializer/svm.py", line 77, in <module>
    class SVM(object):
  File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/pycasp-0.1-py2.7.egg/svm_specializer/svm.py", line 84, in SVM
    platform = PlatformDetector()
  File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/asp-0.1.3.1-py2.7.egg/asp/config.py", line 24, in __init__
    self.cuda_util_mod = asp_module.ASPModule(use_cuda=True)
  File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/asp-0.1.3.1-py2.7.egg/asp/jit/asp_module.py", line 352, in __init__
    codepy.toolchain.guess_toolchain(),
  File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/codepy-2013.1.2-py2.7.egg/codepy/toolchain.py", line 415, in guess_toolchain
    result, version, stderr = call_capture_output([kwargs["cc"], "--version"])
  File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/pytools/prefork.py", line 197, in call_capture_output
    return forker[0].call_capture_output(cmdline, cwd, error_on_nonzero)
  File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/pytools/prefork.py", line 54, in call_capture_output
    % ( " ".join(cmdline), e))
pytools.prefork.ExecError: error invoking 'g++-4.2 --version': [Errno 2] No such file or directory
Traceback (most recent call last):
  File "tests/svm_gmm_test.py", line 1, in <module>
    from gmm_specializer.gmm import *
  File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/pycasp-0.1-py2.7.egg/gmm_specializer/gmm.py", line 61, in <module>
    class GMM(object):
  File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/pycasp-0.1-py2.7.egg/gmm_specializer/gmm.py", line 69, in GMM
    platform = PlatformDetector()
  File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/asp-0.1.3.1-py2.7.egg/asp/config.py", line 24, in __init__
    self.cuda_util_mod = asp_module.ASPModule(use_cuda=True)
  File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/asp-0.1.3.1-py2.7.egg/asp/jit/asp_module.py", line 352, in __init__
    codepy.toolchain.guess_toolchain(),
  File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/codepy-2013.1.2-py2.7.egg/codepy/toolchain.py", line 415, in guess_toolchain
    result, version, stderr = call_capture_output([kwargs["cc"], "--version"])
  File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/pytools/prefork.py", line 197, in call_capture_output
    return forker[0].call_capture_output(cmdline, cwd, error_on_nonzero)
  File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/pytools/prefork.py", line 54, in call_capture_output
    % ( " ".join(cmdline), e))
pytools.prefork.ExecError: error invoking 'g++-4.2 --version': [Errno 2] No such file or directory

[egonina]

Hi, thanks for your interest. This project is not under active development and was originally developed on linux platforms. What does g++-4.2 --version give you?

[fusaroli]

Thanks for your answer. OsX has replaced gcc with clang. If I write g++-4.2 -- version, I get "command not found". If I write g++ --version, I get:

Configured with: --prefix=/Applications/Xcode.app/Contents/Developer/usr --with-gxx-include-dir=/usr/include/c++/4.2.1
Apple LLVM version 6.1.0 (clang-602.0.53) (based on LLVM 3.6.0svn)
Target: x86_64-apple-darwin14.4.0
Thread model: posix

[egonina]

Try: sudo ln -sn /usr/bin/g++ /usr/bin/g++-4.2 ?
http://stackoverflow.com/questions/8368834/error-with-inline-and-xcode-4-2-1

[cunnie]

@fusaroli : I gave up installing PyCASP on a Mac, but I did have success installing it on Amazon AWS, and I've written some notes here: https://github.com/egonina/pycasp/wiki/PyCASP-on-Amazon-AWS .

Also, the procedure to install PyCASP should be generalizable to installing on any Ubuntu 14.04 system. For example, I followed the procedure to set up PyCASP on my Thinkpad T440p (with NVIDIA CUDA cores).

If you notice any mistakes, please don't hesitate to edit the Wiki directly.