[src/trunk]: src/share/mk Introduce MKLIBCSANITIZER in the share/mk rules

[kamil <kamil%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/2bc1b1c855ce
branches:  trunk
changeset: 991680:2bc1b1c855ce
user:      kamil <kamil%NetBSD.org@localhost>
date:      Wed Jul 25 23:34:25 2018 +0000

description:
Introduce MKLIBCSANITIZER in the share/mk rules

Add flags that are required to build a program and a dynamically loaded
library.

Propagade LIBCSANITIZERFLAGS to CFLAGS and CXXFLAGS.

LDFLAGS is not changed on purpose, as a libcsanitizer is inside libc
and no external dependencies are needed.

Register NOLIBCSANITIZER, as certain distribution parts will need to be
skipped.

diffstat:

 share/mk/bsd.lib.mk  |   4 ++--
 share/mk/bsd.own.mk  |  14 ++++++++++----
 share/mk/bsd.prog.mk |   6 +++---
 share/mk/bsd.sys.mk  |   8 +++++++-
 4 files changed, 22 insertions(+), 10 deletions(-)

diffs (95 lines):

diff -r a511ff74a087 -r 2bc1b1c855ce share/mk/bsd.lib.mk
--- a/share/mk/bsd.lib.mk       Wed Jul 25 23:30:22 2018 +0000
+++ b/share/mk/bsd.lib.mk       Wed Jul 25 23:34:25 2018 +0000
@@ -1,4 +1,4 @@
-#      $NetBSD: bsd.lib.mk,v 1.376 2018/06/25 17:58:36 kamil Exp $
+#      $NetBSD: bsd.lib.mk,v 1.377 2018/07/25 23:34:25 kamil Exp $
 #      @(#)bsd.lib.mk  8.3 (Berkeley) 4/22/94
 
 .include <bsd.init.mk>
@@ -157,7 +157,7 @@
 PICFLAGS ?= -fPIC
 
 .if ${MKPICLIB} != "no"
-CSHLIBFLAGS+= ${PICFLAGS} ${SANITIZERFLAGS}
+CSHLIBFLAGS+= ${PICFLAGS} ${SANITIZERFLAGS} ${LIBCSANITIZERFLAGS}
 .endif
 
 .if defined(CSHLIBFLAGS) && !empty(CSHLIBFLAGS)
diff -r a511ff74a087 -r 2bc1b1c855ce share/mk/bsd.own.mk
--- a/share/mk/bsd.own.mk       Wed Jul 25 23:30:22 2018 +0000
+++ b/share/mk/bsd.own.mk       Wed Jul 25 23:34:25 2018 +0000
@@ -1,4 +1,4 @@
-#      $NetBSD: bsd.own.mk,v 1.1071 2018/07/18 02:18:45 christos Exp $
+#      $NetBSD: bsd.own.mk,v 1.1072 2018/07/25 23:34:25 kamil Exp $
 
 # This needs to be before bsd.init.mk
 .if defined(BSD_MK_COMPAT_FILE)
@@ -933,9 +933,9 @@
 # including bsd.own.mk.
 #
 .for var in \
-       NOCRYPTO NODOC NOHTML NOINFO NOLINKLIB NOLINT NOMAN NONLS NOOBJ NOPIC \
-       NOPICINSTALL NOPROFILE NOSHARE NOSTATICLIB NODEBUGLIB NOSANITIZER \
-       NORELRO
+       NOCRYPTO NODOC NOHTML NOINFO NOLIBCSANITIZER NOLINKLIB NOLINT NOMAN \
+       NONLS NOOBJ NOPIC NOPICINSTALL NOPROFILE NOSHARE NOSTATICLIB \
+       NODEBUGLIB NOSANITIZER NORELRO
 .if defined(${var})
 MK${var:S/^NO//}:=     no
 .endif
@@ -1093,6 +1093,12 @@
 USE_SANITIZER?=        address
 
 #
+# Sanitizers implemented in libc, only "undefined" is supported
+#
+MKLIBCSANITIZER?=      no
+USE_LIBCSANITIZER?=    undefined
+
+#
 # Exceptions to the above:
 #
 
diff -r a511ff74a087 -r 2bc1b1c855ce share/mk/bsd.prog.mk
--- a/share/mk/bsd.prog.mk      Wed Jul 25 23:30:22 2018 +0000
+++ b/share/mk/bsd.prog.mk      Wed Jul 25 23:34:25 2018 +0000
@@ -1,4 +1,4 @@
-#      $NetBSD: bsd.prog.mk,v 1.316 2018/07/12 10:46:41 maxv Exp $
+#      $NetBSD: bsd.prog.mk,v 1.317 2018/07/25 23:34:25 kamil Exp $
 #      @(#)bsd.prog.mk 8.2 (Berkeley) 4/2/94
 
 .ifndef HOSTPROG
@@ -9,8 +9,8 @@
 
 ##### Sanitizer specific flags.
 
-CFLAGS+=       ${SANITIZERFLAGS}
-CXXFLAGS+=     ${SANITIZERFLAGS}
+CFLAGS+=       ${SANITIZERFLAGS} ${LIBCSANITIZERFLAGS}
+CXXFLAGS+=     ${SANITIZERFLAGS} ${LIBCSANITIZERFLAGS}
 LDFLAGS+=      ${SANITIZERFLAGS}
 
 # Rename the local function definitions to not conflict with libc/rt/pthread/m.
diff -r a511ff74a087 -r 2bc1b1c855ce share/mk/bsd.sys.mk
--- a/share/mk/bsd.sys.mk       Wed Jul 25 23:30:22 2018 +0000
+++ b/share/mk/bsd.sys.mk       Wed Jul 25 23:34:25 2018 +0000
@@ -1,4 +1,4 @@
-#      $NetBSD: bsd.sys.mk,v 1.284 2018/06/24 19:35:12 kamil Exp $
+#      $NetBSD: bsd.sys.mk,v 1.285 2018/07/25 23:34:25 kamil Exp $
 #
 # Build definitions used for NetBSD source tree builds.
 
@@ -146,6 +146,12 @@
 SANITIZERFLAGS=                # empty
 .endif
 
+.if ${MKLIBCSANITIZER:Uno} == "yes"
+LIBCSANITIZERFLAGS+=   -fsanitize=${USE_LIBCSANITIZER}
+LIBCSANITIZERFLAGS+=   -fno-sanitize=vptr      # Unsupported in micro-UBSan
+.else
+LIBCSANITIZERFLAGS=    # empty
+.endif
 
 CWARNFLAGS+=   ${CWARNFLAGS.${ACTIVE_CC}}