The compiling failed with openblas

[qingqing01]

Error:

[ 98%] Built target softmax_with_cross_entropy_op
/home/xxx/.third_party/install/openblas/lib/libopenblas.a(memory.o): In function `openblas_fork_handler':
memory.c:(.text+0x190): undefined reference to `pthread_atfork'

From this link https://github.com/xianyi/OpenBLAS/wiki/faq :

It seems that needs to link the pthread library:

How to solve undefined reference errors when statically linking against libopenblas.a

On Linux, if OpenBLAS was compiled with threading support (USE_THREAD=1 by default), custom programs statically linked against libopenblas.a should also link to the pthread library e.g.:

gcc -static -I/opt/OpenBLAS/include -L/opt/OpenBLAS/lib -o my_program my_program.c -lopenblas -lpthread

[tensor-tang]

I encounter the same issue

[luotao1]

@helinwang Do we need add openblas (WITH_MKLDNN=OFF WITH_MKLML=OFF WITH_GPU=OFF ) in our teamcity? Since this issue and #5523 are both compiled fail with openblas version.

Current CPU version in teamcity is WITH_MKLDNN=ON WITH_MKLML=ON.

[helinwang]

@luotao1 sure, I can do that. But when I tried the following build command on the develop branch I got:

$ docker run --rm -i -v `pwd`/Paddle:/paddle -e WITH_GPU=OFF -e WITH_AVX=ON -e WITH_TESTING=OFF -e WITH_DEB=ON -e WITH_MKLDNN=OFF -e WITH_MKLML=OFF -e WITH_GOLANG=ON -e PADDLE_VERSION=0.10.0 -e RUN_TEST=OFF paddlepaddle/paddle:latest-dev
CMake Error at cmake/external/openblas.cmake:118 (IF):
  if given arguments:

    "EQUAL" "MKLML"

  Unknown arguments specified
Call Stack (most recent call first):
  CMakeLists.txt:123 (include)

Maybe we need to fix our develop branch first before it is turned on for every pull request CI (or perhaps I did not use the correct command)?

[tensor-tang]

@helinwang that is the issue #5523 , and I gave a PR #5521 , you can help review it.

[NHZlX]

Is this error fixed? I meet the same problem..

[luotao1]

I am working on it, and don't fix it sucessfully.
The reason caused is 0ede2a7 and #5441
If I delete USE_NO_KERNEL_OP(fill_constant), I can build successfully. But the unit test fails.
@reyoung can you help to see it as well ?

[luotao1]

@helinwang This issue is fixed by #5552 , you could add openblas version in the teamcity. Thanks very much!

[helinwang]

@luotao1 thanks! done.