Unable to find the "example" program in the In the "examples" directory

[hanyun2019]

I have successful run the following steps on MacOS:

1. ./install.sh

virtualenv -p python3 venv
source venv/bin/activate
pip3 install -r requirements.txt
3) ./open_spiel/scripts/build_and_run_tests.sh

But when I try to run my first example, like:
examples/example --game=tic_tac_toe

I can not find the "example" program in the "examples" directory:

Anyone knows what happens here? Thanks!

[lanctot]

The build_and_run_tests.sh script creates a build directory to put everything it compiles into. You need to run the example from within that build directory.

You can also do it manually as step 3 like explained here: https://github.com/deepmind/open_spiel/blob/master/docs/install.md#building-and-running-tests

[hanyun2019]

The build_and_run_examples.sh can not be found.
You means ./open_spiel/scripts/build_and_run_tests.sh ?

[lanctot]

Oh yes I was referring to your step 3. I edited my comment to fix it.

[lanctot]

@hanyun2019, were you able to run the example from within the build directory?

[hanyun2019]

If I use: ./open_spiel/scripts/build_and_run_tests.sh, I can pass all the test:

But I still can not find the "example" program in the "examples" directory:

Maybe I enter a wrong directory?
@lanctot

[lanctot]

It is great that the tests pass. This means that it is working.

As I said in a previous comment, this script creates a build subdirectory where all the binaries are placed (see lines 44-46 of the build_and_run_tests.sh script). You need to run the example from within that directory, or prepend the build directory to the command.

(If you do the build manually like the instructions I linked above, then you create this build directory yourself, so you know the name of it. Otherwise you can find it by running ls after running the build script.)

[hanyun2019]

And if I follow the detail steps (I think it's an alternative install way in the document) as:
https://github.com/deepmind/open_spiel/blob/master/docs/install.md#building-and-running-tests

I can not pass the following steps:
make -j$(nproc)

It's my situation now.
I am stilling fighting for the make ......

@lanctot

[lanctot]

You need the fixes for MacOSX from here: #6 to fix the dynamic lookup problem.

Try git pull to update the code or clone a fresh copy.

[lanctot]

Also note that nproc is not defined on MacOS. If you are building manually please use make -j12 instead of make -j$(nproc). Thanks.

[hanyun2019]

I have already git pull the code again:

But still failed to "make -j12":

@lanctot

[lanctot]

Can you try removing all the code, clone a fresh copy of the repos, and try again?

I think the CMake is reusing cached makefiles which need to be updated. That is why the test script works but the manual build does not. Because you ran cmake before those MacOS fixes were in.

[lanctot]

Alternatively you can remove all the cached cmake files with rm -rf CMakeCache.txt CMakeFiles and rerun the cmake command, then run the make command again.

[hanyun2019]

I have removed all the cached cmake files with: rm -rf CMakeCache.txt CmakeFiles

Which parameters should I take with the cmake command?

[lanctot]

The same one used in the manual build instructions specified here: https://github.com/deepmind/open_spiel/blob/master/docs/install.md#building-and-running-tests

[hanyun2019]

I have successfully pass the cmake again, with the command:
CXX=g++ cmake -DPython_TARGET_VERSION=3.6 -DCMAKE_CXX_COMPILER=${CXX} ../open_spiel

But still failed to "make -j12":