josephevans opened a new pull request #17527: Ensure destination directory exists before attempting to write. URL: https://github.com/apache/incubator-mxnet/pull/17527 ## Description ## Make sure build destination directory exists. Fixes race condition when compiling (with GNU make) with multiple jobs (-jX). Build fail log: ` g++ -shared -fPIC -std=c++11 example/extensions/lib_custom_op/gemm_lib.cc -o build/libcustomop_lib.so -I include/mxnet /usr/bin/ld: cannot open output file build/libcustomop_lib.so: No such file or directory collect2: error: ld returned 1 exit status Makefile:676: recipe for target 'custom_op_lib' failed make: *** [custom_op_lib] Error 1 make: *** Waiting for unfinished jobs.... `
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