Created attachment 504710 [details] build.log The specific version tested was 1.1.0g-r1 with USE=bindist (to use the fedora patchset).
Created attachment 504894 [details, diff] Patch for openssl-1.1.0g-r1.ebuild The new async mode uses *context functions, which are missing from musl. It is not clear when/if they will be supported. This (untested) patch tries to fix the build by disabling the aysnc mode.
the patch seems to make sense to me, will include
confirmed and commited