CODEWITHSUNDEEP
gotensorflow
Lee Rick
Lee Rick

Reputation: 13

TensorFlow for Go demo example run failed

i have the issue.

environment 

macbookpro:lib fredlee$ go version
go version go1.8.3 darwin/amd64
macbookpro:lib fredlee$ pwd
/usr/local/lib
macbookpro:lib fredlee$ ls -alh libtensorflow.so 
-r-xr-xr-x  1 root  wheel   102M  1  1  1970 libtensorflow.so
macbookpro:lib fredlee$ file libtensorflow.so 
libtensorflow.so: Mach-O 64-bit dynamically linked shared library x86_64
macbookpro:lib fredlee$

issue 

> macbookpro:~ fredlee$ go get
> github.com/tensorflow/tensorflow/tensorflow/go macbookpro:~ fredlee$
> go test github.com/tensorflow/tensorflow/tensorflow/go
> # github.com/tensorflow/tensorflow/tensorflow/go ld: library not found for -ltensorflow clang: error: linker command failed with exit code 1
> (use -v to see invocation)
> FAIL  github.com/tensorflow/tensorflow/tensorflow/go [build failed]

anyone can help me make it works?

Upvotes: 0

Views: 419

Answers (2)

Heissenberger
Heissenberger

Reputation: 306

I do not quit understand why you test a third-party package. But from your error, looks like a lib called ld is not found. If it is needed the the package, then I believe It should be installed in the $GOPATH/bin. So, please try:

export PATH=$PATH:$GOPATH/bin

Upvotes: 0

nessuno
nessuno

Reputation: 27070

The error is pretty clear:

ld: library not found for -ltensorflow

When you run go test you're invoking the go compiler that compiles the required libraries, your test files and then executes them.

When you compile a program that uses a "non-pure" go library, you have to make the compiler (and the linker) aware of the library.

In the compilation phase, the compiler looks for the libraries (also) in the paths listed into the environment variable:

LIBRARY_PATH on OS X & Linux.

Thus you have to add into this variable the location of the compiled library.

For example I have:

TFGOLIB="${GOPATH}/src/github.com/tensorflow/tensorflow/bazel-bin/tensorflow"
export LIBRARY_PATH="${TFGOLIB}:${LIBRARY_PATH}"

During the runtime, instead, the os looks for the library in order to perform dynamic linking.

Thus you have to set this other variable (LD_LIBRARY_PATH on Linux and DYLD_LIBRARY_PATH on OS X) to the same location.

Moreover I suggest you to also add the CUDA library path to this variable, in order to make it available at runtime.

export LD_LIBRARY_PATH="$LD_LIBRARY_PATH:/opt/cuda/lib64:/opt/cuda/extras/CUPTI/lib64:/opt/cudnn5.1/cuda/lib64:${TFGOLIB}"

Upvotes: 3

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