DickJC123 opened a new issue #16478: CI unix-gpu GPU:CMake build failures URL: https://github.com/apache/incubator-mxnet/issues/16478 At least 2 PRs have seen GPU:CMake build failures for the unix-gpu: http://jenkins.mxnet-ci.amazon-ml.com/blue/rest/organizations/jenkins/pipelines/mxnet-validation/pipelines/unix-gpu/branches/PR-16462/runs/6/nodes/48/steps/182/log/?start=0 shows error: ``` building 'mxnet._cy2.symbol' extension gcc -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -fno-strict-aliasing -Wdate-time -D_FORTIFY_SOURCE=2 -g -fstack-protector-strong -Wformat -Werror=format-security -fPIC -I../include/ -I../3rdparty/tvm/nnvm/include -I/usr/include/python2.7 -c mxnet/cython/symbol.cpp -o build/temp.linux-x86_64-2.7/mxnet/cython/symbol.o cc1plus: warning: command line option '-Wstrict-prototypes' is valid for C/ObjC but not for C++ mxnet/cython/symbol.cpp:1568:18: warning: 'PyObject* __pyx_f_5mxnet_4_cy2_6symbol_py_str(const char*)' defined but not used [-Wunused-function] static PyObject *__pyx_f_5mxnet_4_cy2_6symbol_py_str(char const *__pyx_v_x) { ^ g++ -pthread -shared -Wl,-O1 -Wl,-Bsymbolic-functions -Wl,-Bsymbolic-functions -Wl,-z,relro -fno-strict-aliasing -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -Wdate-time -D_FORTIFY_SOURCE=2 -g -fstack-protector-strong -Wformat -Werror=format-security -Wl,-Bsymbolic-functions -Wl,-z,relro -Wdate-time -D_FORTIFY_SOURCE=2 -g -fstack-protector-strong -Wformat -Werror=format-security build/temp.linux-x86_64-2.7/mxnet/cython/symbol.o -L/work/build -lmxnet -o build/lib.linux-x86_64-2.7/mxnet/_cy2/symbol.so -Wl,-rpath=$ORIGIN/..:$ORIGIN/../../../lib:$ORIGIN/../../../build g++: fatal error: -fuse-linker-plugin, but liblto_plugin.so not found compilation terminated. error: command 'g++' failed with exit status 1 ``` A simple retrigger shows no similar problem. Also, from @access2rohit , http://jenkins.mxnet-ci.amazon-ml.com/blue/organizations/jenkins/mxnet-validation%2Funix-gpu/detail/PR-16476/1/pipeline fails at nearly the same point, but with error: ``` building 'mxnet._cy2.symbol' extension gcc -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -fno-strict-aliasing -Wdate-time -D_FORTIFY_SOURCE=2 -g -fstack-protector-strong -Wformat -Werror=format-security -fPIC -I../include/ -I../3rdparty/tvm/nnvm/include -I/usr/include/python2.7 -c mxnet/cython/symbol.cpp -o build/temp.linux-x86_64-2.7/mxnet/cython/symbol.o gcc: error trying to exec 'cc1plus': execvp: No such file or directory error: command 'gcc' failed with exit status 1 ninja: build stopped: subcommand failed. ``` @larroy
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