[src/trunk]: src/share/mk explain how to allow coverity to use sysroot

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

details:   https://anonhg.NetBSD.org/src/rev/2d47ee7b164b
branches:  trunk
changeset: 829378:2d47ee7b164b
user:      christos <christos%NetBSD.org@localhost>
date:      Sat Jan 27 23:59:17 2018 +0000

description:
explain how to allow coverity to use sysroot

diffstat:

 share/mk/bsd.own.mk |  10 ++++++----
 1 files changed, 6 insertions(+), 4 deletions(-)

diffs (30 lines):

diff -r 0a5067c8d825 -r 2d47ee7b164b share/mk/bsd.own.mk
--- a/share/mk/bsd.own.mk       Sat Jan 27 23:07:36 2018 +0000
+++ b/share/mk/bsd.own.mk       Sat Jan 27 23:59:17 2018 +0000
@@ -1,4 +1,4 @@
-#      $NetBSD: bsd.own.mk,v 1.1028 2018/01/24 09:04:42 skrll Exp $
+#      $NetBSD: bsd.own.mk,v 1.1029 2018/01/27 23:59:17 christos Exp $
 
 # This needs to be before bsd.init.mk
 .if defined(BSD_MK_COMPAT_FILE)
@@ -312,15 +312,17 @@
 #
 DESTDIR?=
 
-# Coverity does not like --sysroot
+# Don't append another copy of sysroot (coming from COMPATCPPFLAGS etc.
+# because it confuses Coverity. Still we need to cov-configure specially
+# for each specific sysroot argument.
 .if !defined(HOSTPROG) && !defined(HOSTLIB)
 .  if ${DESTDIR} != ""
-.      if !defined(COVERITY_TOP_CONFIG)
+.      if empty(CPPFLAGS:M*--sysroot=*)
 CPPFLAGS+=     --sysroot=${DESTDIR}
 .      endif
 LDFLAGS+=      --sysroot=${DESTDIR}
 .  else
-.      if !defined(COVERITY_TOP_CONFIG)
+.      if empty(CPPFLAGS:M*--sysroot=*)
 CPPFLAGS+=     --sysroot=/
 .      endif
 LDFLAGS+=      --sysroot=/