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torch / torch7

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th binary missing in torch7 source build? #984

Open puneet336 opened 7 years ago

puneet336 commented 7 years ago

Hi all, I am trying to compile torch 7 with gcc/4.9.3 compiler on centos 6.5. I had downloaded torch7 using:- git clone -b master --recursive https://github.com/torch/torch7.git

After executing : cmake -DCMAKE_CXX_COMPILER=which g++ -DCMAKE_C_COMPILER=which gcc -DCMAKE_CXX_FLAGS='-fPIC' -DCMAKE_C_FLAGS='-fPIC' -DCMAKE_INSTALL_PREFIX="$HOME/MYSOFTWARES/TORCH/7.master.16032017/gnu/" ..|tee cmakelogs

I get libTH.so libTH.so.0 libluaT.so libluaT.so.0 libtorch.so libraries and i was unable to find th binary. Is this expected?

or th is part of https://github.com/torch/distro ?

Eagerly awaiting your replies.

albanD commented 7 years ago

Hi, You should install this repo using luarocks make if you want to install from source. The luarocks above should be the special one from torch (see where torch distro installs luajit).

What luarocks make execute to build this repo is this.

The thcommand line comes from the trepl package, and is just a lua script executed inside luajit that has some extra features to work better with torch. th is not a binary. The only binary that is shipped is luajit (from here), everything else are lua packages.

If you want to see exactly what is done to install torch from scratch, you can take a look at the install script from torch distro that installs luajit and all torch related packages.