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Index: head/Makefile.inc1
===================================================================
--- head/Makefile.inc1
+++ head/Makefile.inc1
@@ -659,7 +659,7 @@
-DNO_PIC MK_PROFILE=no -DNO_SHARED \
-DNO_CPU_CFLAGS MK_WARNS=no MK_CTF=no \
MK_CLANG_EXTRAS=no MK_CLANG_FULL=no \
- MK_LLDB=no MK_TESTS=no \
+ MK_LLDB=no MK_RETPOLINE=no MK_TESTS=no \
MK_INCLUDES=yes
BMAKE= \
@@ -680,7 +680,7 @@
-DNO_LINT \
-DNO_CPU_CFLAGS MK_WARNS=no MK_CTF=no \
MK_CLANG_EXTRAS=no MK_CLANG_FULL=no \
- MK_LLDB=no MK_TESTS=no
+ MK_LLDB=no MK_RETPOLINE=no MK_TESTS=no
# cross-tools stage
# TOOLS_PREFIX set in BMAKE
@@ -703,7 +703,7 @@
SSP_CFLAGS= \
MK_HTML=no -DNO_LINT MK_MAN=no \
-DNO_PIC MK_PROFILE=no -DNO_SHARED \
- -DNO_CPU_CFLAGS MK_WARNS=no MK_CTF=no
+ -DNO_CPU_CFLAGS MK_RETPOLINE=no MK_WARNS=no MK_CTF=no
# world stage
WMAKEENV= ${CROSSENV} \
@@ -2383,6 +2383,7 @@
MK_OFED=no \
MK_OPENSSH=no \
MK_PROFILE=no \
+ MK_RETPOLINE=no \
MK_SENDMAIL=no \
MK_SVNLITE=no \
MK_TESTS=no \
Index: head/share/mk/bsd.lib.mk
===================================================================
--- head/share/mk/bsd.lib.mk
+++ head/share/mk/bsd.lib.mk
@@ -69,6 +69,12 @@
TAG_ARGS= -T ${TAGS:[*]:S/ /,/g}
.endif
+.if ${MK_RETPOLINE} != "no"
+CFLAGS+= -mretpoline
+CXXFLAGS+= -mretpoline
+LDFLAGS+= -Wl,-zretpolineplt
+.endif
+
.if ${MK_DEBUG_FILES} != "no" && empty(DEBUG_FLAGS:M-g) && \
empty(DEBUG_FLAGS:M-gdwarf*)
CFLAGS+= ${DEBUG_FILES_CFLAGS}
Index: head/share/mk/bsd.opts.mk
===================================================================
--- head/share/mk/bsd.opts.mk
+++ head/share/mk/bsd.opts.mk
@@ -72,6 +72,7 @@
CCACHE_BUILD \
CTF \
INSTALL_AS_USER \
+ RETPOLINE \
STALE_STAGED
__DEFAULT_DEPENDENT_OPTIONS = \
Index: head/share/mk/bsd.prog.mk
===================================================================
--- head/share/mk/bsd.prog.mk
+++ head/share/mk/bsd.prog.mk
@@ -34,6 +34,12 @@
MK_DEBUG_FILES= no
.endif
+.if ${MK_RETPOLINE} != "no"
+CFLAGS+= -mretpoline
+CXXFLAGS+= -mretpoline
+LDFLAGS+= -Wl,-zretpolineplt
+.endif
+
.if defined(CRUNCH_CFLAGS)
CFLAGS+=${CRUNCH_CFLAGS}
.else
Index: head/tools/build/options/WITH_RETPOLINE
===================================================================
--- head/tools/build/options/WITH_RETPOLINE
+++ head/tools/build/options/WITH_RETPOLINE
@@ -0,0 +1,3 @@
+.\" $FreeBSD$
+Set to build the base system with the retpoline speculative execution
+vulnerability mitigation for CVE-2017-5715.

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