[src/trunk]: src/share/mk Add an alternative to NOGCCERROR for clang.

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

details:   https://anonhg.NetBSD.org/src/rev/008e689720f1
branches:  trunk
changeset: 765548:008e689720f1
user:      joerg <joerg%NetBSD.org@localhost>
date:      Mon May 30 13:47:01 2011 +0000

description:
Add an alternative to NOGCCERROR for clang.

diffstat:

 share/mk/bsd.README |  5 ++++-
 share/mk/bsd.sys.mk |  5 +++--
 2 files changed, 7 insertions(+), 3 deletions(-)

diffs (38 lines):

diff -r c9c309d8432e -r 008e689720f1 share/mk/bsd.README
--- a/share/mk/bsd.README       Mon May 30 13:10:38 2011 +0000
+++ b/share/mk/bsd.README       Mon May 30 13:47:01 2011 +0000
@@ -1,4 +1,4 @@
-#      $NetBSD: bsd.README,v 1.282 2011/05/20 16:02:23 plunky Exp $
+#      $NetBSD: bsd.README,v 1.283 2011/05/30 13:47:01 joerg Exp $
 #      @(#)bsd.README  8.2 (Berkeley) 4/2/94
 
 This is the README file for the make "include" files for the NetBSD
@@ -1623,6 +1623,9 @@
                        -Werror -Wa,--fatal-warnings
                (The latter being for as(1).)
 
+NOCLANGERROR   If defined and clang is used as C compiler, -Werror is not
+               passed to it.
+
 WARNS          Crank up GCC warning options; the distinct levels are:
                        WARNS=1
                        WARNS=2
diff -r c9c309d8432e -r 008e689720f1 share/mk/bsd.sys.mk
--- a/share/mk/bsd.sys.mk       Mon May 30 13:10:38 2011 +0000
+++ b/share/mk/bsd.sys.mk       Mon May 30 13:47:01 2011 +0000
@@ -1,4 +1,4 @@
-#      $NetBSD: bsd.sys.mk,v 1.201 2011/05/26 12:56:30 joerg Exp $
+#      $NetBSD: bsd.sys.mk,v 1.202 2011/05/30 13:47:01 joerg Exp $
 #
 # Build definitions used for NetBSD source tree builds.
 
@@ -65,7 +65,8 @@
 CWARNFLAGS+=   ${CWARNFLAGS.${ACTIVE_CC}}
 
 CPPFLAGS+=     ${AUDIT:D-D__AUDIT__}
-CFLAGS+=       ${CWARNFLAGS} ${NOGCCERROR:D:U-Werror}
+_NOWERROR=     ${defined(NOGCCERROR) || (${ACTIVE_CC} == "clang" && defined(NOCLANGERROR)):?yes:no}
+CFLAGS+=       ${CWARNFLAGS} ${${_NOWERROR} == "no" :?-Werror:}
 LINTFLAGS+=    ${DESTDIR:D-d ${DESTDIR}/usr/include}
 
 .if (${MACHINE_ARCH} == "alpha") || \