D43497.id132943.diff
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	Index: Mk/Features/sanitize.mk
	===================================================================
	--- /dev/null
	+++ Mk/Features/sanitize.mk
	@@ -0,0 +1,24 @@
	+# Sanitize Support
	+#
	+# In order to enable it, add to your to your make.conf:
	+# - For all ports (not advised): WITH_SANITIZE=yes
	+# - For a specified port: WITH_SANITIZE_PORTS+=ftp/curl
	+# In order to replace the default asan by others, like msan as example:
	+# SANITIZE_FLAGS="memory"
	+#
	+
	+.if !defined(_SANITIZE_MK_INCLUDED)
	+_SANITIZE_MK_INCLUDED= yes
	+SANITIZE_Include_MAINTAINER= portmgr@FreeBSD.org
	+
	+. if !defined(SANITIZE_UNSAFE)
	+ SANITIZE_FLAGS?= address
	+. if defined(_INCLUDE_USES_MESON_MK)
	+ MESON_ARGS+= -Db_sanitize=${SANITIZE_FLAGS}
	+. else
	+ CFLAGS+= -fsanitize=${SANITIZE_FLAGS}
	+ CXXFLAGS+= -fsanitize=${SANITIZE_FLAGS}
	+ LDFLAGS+= -fsanitize=${SANITIZE_FLAGS}
	+. endif
	+. endif
	+.endif
	Index: Mk/bsd.port.mk
	===================================================================
	--- Mk/bsd.port.mk
	+++ Mk/bsd.port.mk
	@@ -1016,7 +1016,7 @@
	# These need to be absolute since we don't know how deep in the ports
	# tree we are and thus can't go relative. They can, of course, be overridden
	# by individual Makefiles or local system make configuration.
	-_LIST_OF_WITH_FEATURES= debug lto ssp pie relro bind_now
	+_LIST_OF_WITH_FEATURES= bind_now debug lto pie relro sanitize ssp
	_DEFAULT_WITH_FEATURES= ssp
	PORTSDIR?= /usr/ports
	LOCALBASE?= /usr/local