I've been trying to compile and analyze the so-called "Block King" contract, which can be found on Etherscan. However, I can't find a way to run the compiler which is claimed to have produced the EVM code currently on the blockchain, namely version v0.2.1-2016-02-10-7b5d96c. I have tried to specify this version in the remix IDE but nothing happends when I try to compile it. I also haven't found a way to get the corresponding version of solc.

Any recent version of solc (rightly, it seems) screams warnings and errors at this contract. Is there any hope to be able to compile it again?

migrated from stackoverflow.com Dec 20 '17 at 2:47

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v0.2.1 with a different timestamp can be found on the Github release page:


There's no release with the timestamp you mention, so I'd guess it was a nightly build at this commit (that's the -7b5d96c suffix from your version string):


So if you want to build with exactly this version just clone the repository, check out this commit and rebuild solc, though I'd probably just try changing the version pragma and try 0.2.1 first.

  • Thanks for answering. I did try to do that, however when I follow the Linux build instructions on my Ubuntu 16.04 laptop, I get on the command ~/projets/solidity/build$ cmake ../ the output CMake Error at CMakeLists.txt:7 (include): include could not find load file: EthPolicy CMake Error at CMakeLists.txt:8 (eth_policy): Unknown CMake command "eth_policy". -- Configuring incomplete, errors occurred! – user3078439 Dec 19 '17 at 16:14

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