mecab does not work on Ubuntu + apt? Then, source compile!
Summary
- Mecab(japanese tokenizer) does not work correctly when one installed it with apt on Ubuntu
- the solution is to compile from source.
Ubutn+apt to install mecab?
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sudo apt install mecab sudo apt install libmecab-dev sudo apt install mecab-ipadic-utf8 |
and then…. you’d like to know where dictionaries exist.
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$ mecab-config --dicdir /usr/lib/x86_64-linux-gnu/mecab/dic $ ls /usr/lib/x86_64-linux-gnu/mecab/dic ls: cannot access '/usr/lib/x86_64-linux-gnu/mecab/dic': No such file or directory |
It does not exist!
So where is the dictionary?
so let’s find it!
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$ find / -name "mecab*" | less 省略 /usr/share/doc/mecab/mecab_8h.html /usr/share/doc/mecab-ipadic-utf8 /usr/share/doc/mecab-utils /usr/share/doc/mecab-ipadic /usr/share/doc/mecab-jumandic /usr/share/doc/mecab-jumandic-utf8 /var/lib/mecab 省略 |
okay… it exists under /user/share/doc. So, you look at the directory, however, you find that dictionary files do not exist again!
Solution? source compile!
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# required libs sudo yum install -y bzip2 bzip2-devel gcc gcc-c++ git make wget curl openssl-devel readline-devel zlib-devel patch file # create working dir mkdir -p ~/source/mecab cd ~/source/mecab # download source wget 'https://drive.google.com/uc?export=download&id=0B4y35FiV1wh7cENtOXlicTFaRUE' -O mecab-0.996.tar.gz tar zxvf mecab-0.996.tar.gz cd mecab-0.996 # create target of install sudo mkdir -p /opt/mecab # configure and compile and install ./configure --prefix=/opt/mecab --with-charset=utf8 --enable-utf8-only make sudo make install # put env path echo "export PATH=/opt/mecab/bin:\$PATH" >> ~/.bashrc source ~/.bashrc mecab-config --libs-only-L | sudo tee /etc/ld.so.conf.d/mecab.conf sudo ldconfig # dictionary install mkdir ~/source/mecab-ipadic cd ~/source/mecab-ipadic wget 'https://drive.google.com/uc?export=download&id=0B4y35FiV1wh7MWVlSDBCSXZMTXM' -O mecab-ipadic-2.7.0-20070801.tar.gz tar zxvf mecab-ipadic-2.7.0-20070801.tar.gz cd mecab-ipadic-2.7.0-20070801 # compile and install ./configure --with-mecab-config=/opt/mecab/bin/mecab-config --with-charset=utf8 make sudo make install |
now it works!
For your info
A Python package JapaneseTokenizer, which I developed, could enable following options.
If you could not refer mecab-config by ENV
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mecab_wrapper = MecabWrapper(dictType='ipadic', path_mecab_config='/opt/mecab/bin') |
If you could not refer dictionary path by ENV
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mecab_wrapper = MecabWrapper(dictType='ipadic', path_dictionary='[path to dictionary]') |