Encountered the following error attempting to compile monero from source following this guide: https://github.com/moneroexamples/monero-compilation#example-compilation-of-monero-on-ubuntu-1804. Building on Ubuntu in a VM on windows

Error log

The error always occurred when it reaches the core_rpc_server. Sometimes it hangs my VM entirely, sometimes it manages to exit with the above error code. Any solutions? Can't use cli binary because I need to use the following library: https://github.com/moneroexamples/transactions-export

  • How much memory available, and what are your build steps? Are you able to build from github.com/monero-project/monero ? Jun 1, 2020 at 10:59
  • 6.8 GB available. Followed the exact steps from github.com/moneroexamples/…. No, I get the same error too. Jun 1, 2020 at 11:09
  • If you were refering to RAM, it was 2GB. I increased ram allocated to 8gb and restarted, still trying. Jun 1, 2020 at 11:56
  • 1
    Update: successfully compiled Monero after bumping RAM to 8GB. Looks like lack of RAM was causing GCC to crash. Thanks for the prompt. Jun 1, 2020 at 12:40
  • Yes. Minimum 2GB RAM per thread. Jun 1, 2020 at 12:41

1 Answer 1


c++: fatal error: Killed signal terminated program cc1plus usually means running out of memory.

You can confirm by running sudo dmesg right after the error, and looking for a message like:

Out of memory: Kill process 23747 (cc1plus) score 15 or sacrifice child
Killed process 23747, UID 2243, (cc1plus) total-vm:214456kB, anon-rss:178936kB, file-rss:5908kB

Two things to try:

  1. If you're running with a -j# flag (like -j8), that will use 8 cores - try using -j1 instead (will be a bit slower)
  2. Create a swap file (this uses your disk as extra RAM):
$ sudo dd if=/dev/zero of=/swapfile bs=64M count=128
$ sudo mkswap /swapfile
$ sudo swapon /swapfile

(These particular commands add 64M * 128 = 8GB of new "RAM" - Adjust as needed)

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