SSP support has been added to ports with WITH_SSP for i386 and amd64

on FreeBSD 10, and amd64 on earlier versions.

SSP_UNSAFE is added to disable in a port if it fails to build, but
this should only be used in rare circumstances such as kernel modules.
Otherwise, the port may just be failing due to lack of respecting
LDFLAGS.

On FreeBSD 10, this uses an ldscript in /usr/lib/libc.so to pull in
libssp_nonshared.a to address issues linking on i386 [1].

On earlier FreeBSD versions the WITH_SSP knob will add -lssp_nonshared
to LDFLAGS on i386. This is not needed on amd64. However, several hundred
ports do not currently respect LDFLAGS, so this support is disabled currently
as it causes build failures if a dependency is looking for the stack_chk
symbols.

Many thanks to jlh@ for this as he had many years of patience in getting
all of the necessary pieces [1][2] in.

[1] http://svnweb.freebsd.org/base/head/lib/libc/libc.ldscript?revision=251668&view=markup

PR:		ports/138228 [2]
Submitted by:	jlh (bsd.ssp.mk based on)
Reviewed by:	bapt
With hat:	portmgr
exp-runs done:	37 over a month on 91i386,91amd64,10i386,10amd64

5 files changed, 10 insertions, 10 deletions

diff --git a/emulators/kqemu-kmod-devel/Makefile b/emulators/kqemu-kmod-devel/Makefile
index 181dde346e7d..63e78af63933 100644
--- a/emulators/kqemu-kmod-devel/Makefile
+++ b/emulators/kqemu-kmod-devel/Makefile
@@ -19,6 +19,8 @@ COMMENT=	Kernel Accelerator for QEMU CPU Emulator (development version)
 LICENSE=	GPLv2
 LICENSE_FILE=	${WRKSRC}/COPYING
 
+SSP_UNSAFE=	kernel module does not support ssp
+
 ONLY_FOR_ARCHS=	i386 amd64
 HAS_CONFIGURE=	yes
 USE_GMAKE=	yes
diff --git a/emulators/kqemu-kmod/Makefile b/emulators/kqemu-kmod/Makefile
index 7d9c5aad4ee1..3283821e51e7 100644
--- a/emulators/kqemu-kmod/Makefile
+++ b/emulators/kqemu-kmod/Makefile
@@ -19,6 +19,8 @@ COMMENT=	Kernel Accelerator for QEMU CPU Emulator
 LICENSE=	GPLv2
 LICENSE_FILE=	${WRKSRC}/COPYING
 
+SSP_UNSAFE=	kernel module does not support ssp
+
 ONLY_FOR_ARCHS=	i386 amd64
 HAS_CONFIGURE=	yes
 USE_GMAKE=	yes
diff --git a/emulators/open-vm-tools/Makefile b/emulators/open-vm-tools/Makefile
index a2caf938d450..45dca188c45c 100644
--- a/emulators/open-vm-tools/Makefile
+++ b/emulators/open-vm-tools/Makefile
@@ -24,6 +24,8 @@ USES=			pkgconfig
 USE_LDCONFIG=		yes
 CPPFLAGS+=		-Wno-deprecated-declarations
 
+SSP_UNSAFE=		kernel module does not support ssp
+
 CONFIGURE_ARGS+=	--without-procps --sysconfdir=${LOCALBASE}/etc
 .if defined(WITHOUT_X11)
 LIB_DEPENDS+=		glib-2.0:${PORTSDIR}/devel/glib20
diff --git a/emulators/parallels-tools/Makefile b/emulators/parallels-tools/Makefile
index 034a37f6ce8f..690322a71fc1 100644
--- a/emulators/parallels-tools/Makefile
+++ b/emulators/parallels-tools/Makefile
@@ -1,9 +1,5 @@
-# New ports collection makefile for:	parallels-tools
-# Date created:		14 Jun 2009
-# Whom:			Alexander Nedotsukov <bland@FreeBSD.org>
-#
+# Created by: Alexander Nedotsukov <bland@FreeBSD.org>
 # $FreeBSD$
-#
 
 PORTNAME=	parallels-tools
 PORTVERSION=	0.1.1
@@ -14,6 +10,7 @@ MASTER_SITE_SUBDIR=	bland
 MAINTAINER=	bland@FreeBSD.org
 COMMENT=	Parallels Desktop Tools for FreeBSD
 
+SSP_UNSAFE=	kernel module does not support ssp
 USE_BZIP2=	yes
 
 ONLY_FOR_ARCHS=	amd64 i386
diff --git a/emulators/rtc/Makefile b/emulators/rtc/Makefile
index ce5856a2af5e..6cddc08adeba 100644
--- a/emulators/rtc/Makefile
+++ b/emulators/rtc/Makefile
@@ -1,9 +1,5 @@
-# New ports collection makefile for:	rtc
-# Date created:		28 March 2000
-# Whom:			Akinori MUSHA aka knu <knu@idaemons.org>
-#
+# Created by: Akinori MUSHA aka knu <knu@idaemons.org>
 # $FreeBSD$
-#
 
 PORTNAME=	rtc
 PORTVERSION=	2004.02.24.1
@@ -17,6 +13,7 @@ COMMENT=	Kernel module which provides /dev/rtc device support
 
 WRKSRC=		${WRKDIR}/files
 
+SSP_UNSAFE=	kernel module does not support ssp
 NO_FETCH=	yes
 USE_LINUX=	yes	# because of ${DEVDIR}