svn commit: r344898 - stable/12/share/mk

[Konstantin Belousov]

Author: kib
Date: Thu Mar  7 20:40:39 2019
New Revision: 344898
URL: https://svnweb.freebsd.org/changeset/base/344898

Log:
  Disable WITH_RETPOLINE on stable/12.
  
  It is known that clang 7 generates broken ifunc calls when retpoline is
  enabled. Since libc uses ifuncs, mark WITH_RETPOLINE as always broken
  and disabled. To be removed after clang 8 MFC.
  
  This is a direct commit to the branch.
  
  Reported by:	many
  Tested by:	Nikola Mihaylov <c.source.code at gmail.com>
  Reviewed by:	emaste
  Sponsored by:	The FreeBSD Foundation

Modified:
  stable/12/share/mk/src.opts.mk

Modified: stable/12/share/mk/src.opts.mk
==============================================================================
--- stable/12/share/mk/src.opts.mk	Thu Mar  7 20:12:50 2019	(r344897)
+++ stable/12/share/mk/src.opts.mk	Thu Mar  7 20:40:39 2019	(r344898)
@@ -365,6 +365,9 @@ BROKEN_OPTIONS+=LOADER_UBOOT
 BROKEN_OPTIONS+=LOADER_GELI LOADER_LUA
 .endif
 
+# clang 7.0
+BROKEN_OPTIONS+=RETPOLINE
+
 .if ${__T:Mmips64*}
 # profiling won't work on MIPS64 because there is only assembly for o32
 BROKEN_OPTIONS+=PROFILE