Applying ./patches/001-five-mins-builder-zonk.patch using plaintext: 
patching file node_build/builder.js

Applying ./patches/020-prefer-python2.patch using plaintext: 
patching file node_build/FindPython.js
timeout is 600000
rebuildIfChanges changed, rebuilding everything
Initialize 26ms
Copy dependencies
Build NaCl
Creating directories
cc1: error: -Werror=stringop-overread: no option -Wstringop-overread

Total build time: 375ms.
/mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_24kc_musl/cjdns-cjdns-v21.1/build_linux/dependencies/cnacl/node_build/RandomBytes.js:13
        if (retCode) { throw new Error('failed to compile'); }
                       ^

Error: failed to compile
    at /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_24kc_musl/cjdns-cjdns-v21.1/build_linux/dependencies/cnacl/node_build/RandomBytes.js:13:30
    at /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_24kc_musl/cjdns-cjdns-v21.1/node_build/builder.js:150:17
    at ChildProcess.<anonymous> (/mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_24kc_musl/cjdns-cjdns-v21.1/node_modules/saferphore/index.js:22:34)
    at ChildProcess.emit (events.js:400:28)
    at maybeClose (internal/child_process.js:1088:16)
    at Process.ChildProcess._handle.onexit (internal/child_process.js:296:5)
make[2]: *** [Makefile:149: /mnt/immortalwrt-18.06-k5.4/build_dir/target-mips_24kc_musl/cjdns-cjdns-v21.1/.built] Error 1
time: package/feeds/routing/cjdns/compile#0.63#0.29#1.04