Xubuntu17.10安装mlpy3.5.0遇GSL头文件缺失问题求助

Hey there, let's work through this mlpy installation issue together. The root problem here is that your compiler can't locate the GNU Scientific Library (GSL) headers and libraries correctly, even after your attempts to install GSL. Let's clean up the previous steps and do this properly:

Step 1: Clean Up Previous Messy Installs #

First, let's remove any misplaced files and incomplete packages to avoid conflicts:

• Delete the manually copied GSL folders:

  sudo rm -rf /usr/local/include/gsl
  rm -rf mlpy-3.5.0/mlpy/gsl
  

• Uninstall any partial mlpy installs and conflicting GSL packages:

  pip uninstall -y mlpy
  sudo apt purge -y libgsl*
  

Step 2: Install the Correct GSL Development Package #

The key mistake earlier was installing a runtime GSL package instead of the development version, which includes the headers needed for compilation. Let's install the full, system-managed GSL dev package:

sudo apt update
sudo apt install -y libgsl-dev

This package places headers in /usr/include/gsl and libraries in /usr/lib/x86_64-linux-gnu—paths that your compiler checks by default, so no extra configuration is needed.

Step 3: Reinstall mlpy Properly #

Now navigate back to your extracted mlpy directory and install it correctly. Since you're using Anaconda, make sure you're in the right environment first:

1. Activate your Conda environment (skip if using base):

   conda activate your_environment_name
   

2. Move to the mlpy folder:

   cd mlpy-3.5.0
   

3. Install using either setup.py or pip (pip is more reliable for dependency handling):

   # Option 1: Using setup.py
   python setup.py build
   sudo python setup.py install
   
   # Option 2: Using pip (preferred)
   pip install .
   

If You Still Encounter Issues (Conda Environment Path Conflicts) #

Sometimes Conda can override system library paths. If the above fails, manually specify the GSL paths using pkg-config to get the correct locations:

1. Check GSL's installed paths:

   pkg-config --cflags gsl  # Returns header path
   pkg-config --libs gsl    # Returns library path
   

2. Build with explicit paths:

   python setup.py build_ext --include-dirs=/usr/include --library-dirs=/usr/lib/x86_64-linux-gnu --rpath=/usr/lib/x86_64-linux-gnu
   python setup.py install
   

Why Your Previous Attempts Failed #

• Misplaced header files: Copying /home/gsl/include/gsl into mlpy-3.5.0/mlpy/gsl created a nested path (mlpy/gsl/gsl/...), which didn't match the #include "gsl/gsl_sf.h" directive in the code.
• Incorrect GSL package: libgsl0ldbl is a runtime library—you need libgsl-dev for the header files required to compile mlpy.
• Path typo: You ran python setup.py build_ext --include-dirs=/home/gls/include/gls (note the typo gls instead of gsl), which pointed to a non-existent directory.

内容的提问来源于stack exchange，提问作者Loò