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Below is a list of known issues and fixes (if available).

Build Error in Function `fork_once_func’

Error Description: WAX Source Code Repository Build Issue

After running sudo ./ to build the WAX Source Code Repository on Ubuntu 18.04, the command line reports an error “In function ‘fork_once_func’” (around [90%]):

Scanning dependencies of target test_cypher_suites
Scanning dependencies of target eosio_chain
[ 90%] Building CXX object libraries/fc/test/crypto/CMakeFiles/test_cypher_suites.dir/test_cypher_suites.cpp.o
[ 90%] Building CXX object libraries/chain/CMakeFiles/eosio_chain.dir/merkle.cpp.o
[ 90%] Building CXX object libraries/chain/CMakeFiles/eosio_chain.dir/name.cpp.o
[ 90%] Building CXX object libraries/chain/CMakeFiles/eosio_chain.dir/transaction.cpp.o
[ 90%] Linking CXX executable test_cypher_suites
/usr/lib/x86_64-linux-gnu/libcrypto.a(threads_pthread.o): In function `fork_once_func':
(.text+0x16): undefined reference to `pthread_atfork'
clang: error: linker command failed with exit code 1 (use -v to see invocation)
libraries/fc/test/crypto/CMakeFiles/test_cypher_suites.dir/build.make:113: recipe for target 'libraries/fc/test/crypto/test_cypher_suites' failed
make[2]: *** [libraries/fc/test/crypto/test_cypher_suites] Error 1
CMakeFiles/Makefile2:783: recipe for target 'libraries/fc/test/crypto/CMakeFiles/test_cypher_suites.dir/all' failed
make[1]: *** [libraries/fc/test/crypto/CMakeFiles/test_cypher_suites.dir/all] Error 2
make[1]: *** Waiting for unfinished jobs....

Shortly after receiving this error, the build stops with the following message:

MAKE building EOSIO has exited with the above error. 


You can use the steps below to fix the issue and resume the WAX Source Code Repository build process.

  1. From the command line, change your directory to:
cd patches/fc
  1. From the patches/fc directory, run:
  1. When the patch completes, change your directory to:
cd ../../build
  1. From the build directory, run:
make -j $(nproc)

You should now be able to continue the build process.