Building sysutils/synergy on powerpc I see an error from cmake: Target "core" requires the language dialect "CXX14", but CMake does not know the compiler flags to use to enable it. with "core" replaced by all targets individually.
Could you please confirm that adding compiler:c++14-lang to USES resolves this for you?
I just confirmed, adding "compiler:c++14-lang" to the USES list lets it build correctly.
A commit references this bug: Author: yuri Date: Mon Mar 5 20:54:53 UTC 2018 New revision: 463668 URL: https://svnweb.freebsd.org/changeset/ports/463668 Log: sysutils/synergy: Add USES=compiler:c++14-lang because powerpc build was failing without it PR: 226371 Reported by: jhibbits Approved by: tcberner (mentor, implicit) Changes: head/sysutils/synergy/Makefile
Thank you for confirming. Committed.