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Index: Makefile.inc1
===================================================================
--- Makefile.inc1
+++ Makefile.inc1
@@ -161,11 +161,11 @@
.if !defined(X_COMPILER_TYPE)
CROSSENV+= COMPILER_VERSION=${COMPILER_VERSION} \
COMPILER_TYPE=${COMPILER_TYPE} \
- COMPILER_FEATURES=${COMPILER_FEATURES} \
+ COMPILER_FEATURES="${COMPILER_FEATURES}" \
COMPILER_FREEBSD_VERSION=${COMPILER_FREEBSD_VERSION}
.else
CROSSENV+= COMPILER_VERSION=${X_COMPILER_VERSION} \
- COMPILER_FEATURES=${X_COMPILER_FEATURES} \
+ COMPILER_FEATURES="${X_COMPILER_FEATURES}" \
COMPILER_TYPE=${X_COMPILER_TYPE} \
COMPILER_FREEBSD_VERSION=${X_COMPILER_FREEBSD_VERSION}
.endif
Index: share/mk/bsd.compiler.mk
===================================================================
--- share/mk/bsd.compiler.mk
+++ share/mk/bsd.compiler.mk
@@ -19,7 +19,9 @@
# COMPILER_FEATURES will contain one or more of the following, based on
# compiler support for that feature:
#
-# - c++11 : supports full (or nearly full) C++11 programming environment.
+# - c++11: supports full (or nearly full) C++11 programming environment.
+# - retpoline: supports the retpoline speculative execution vulnerability
+# mitigation.
#
# These variables with an X_ prefix will also be provided if XCC is set.
#
@@ -178,11 +180,13 @@
.endif
.endif
+${X_}COMPILER_FEATURES=
.if ${${X_}COMPILER_TYPE} == "clang" || \
(${${X_}COMPILER_TYPE} == "gcc" && ${${X_}COMPILER_VERSION} >= 40800)
-${X_}COMPILER_FEATURES= c++11
-.else
-${X_}COMPILER_FEATURES=
+${X_}COMPILER_FEATURES+= c++11
+.endif
+.if ${${X_}COMPILER_TYPE} == "clang" && ${${X_}COMPILER_VERSION} >= 60000
+${X_}COMPILER_FEATURES+= retpoline
.endif
.else
Index: share/mk/bsd.linker.mk
===================================================================
--- share/mk/bsd.linker.mk
+++ share/mk/bsd.linker.mk
@@ -12,7 +12,9 @@
# LINKER_FEATURES may contain one or more of the following, based on
# linker support for that feature:
#
-# - build-id : support for generating a Build-ID note
+# - build-id: support for generating a Build-ID note
+# - retpoline: support for generating PLT with retpoline speculative
+# execution vulnerability mitigation
#
# These variables with an X_ prefix will also be provided if XLD is set.
#
@@ -70,6 +72,9 @@
.if ${${X_}LINKER_TYPE} != "bfd" || ${${X_}LINKER_VERSION} > 21750
${X_}LINKER_FEATURES+= build-id
.endif
+.if ${${X_}LINKER_TYPE} == "lld" && ${${X_}LINKER_VERSION} >= 60000
+${X_}LINKER_FEATURES+= retpoline
+.endif
.endif
.else
# Use LD's values

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