Module Name: src
Committed By: lukem
Date: Tue May 30 18:54:21 UTC 2023
Modified Files:
src/tools/compat: configure.ac defs.mk.in
Log Message:
tools/compat: disable host CC warnings
Determine if the host CC supports flags to disable various
warnings similar to <bsd.own.mk> GCC_*, CLANG_*, and CC_*,
and override the <bsd.own.mk> equivalents in defs.mk.
Silences "warning: unknown warning option '...'" from our source.
External source (e.g., binutils and gcc) need their own fixes
to enhance their detection of supported clang compiler flags.
To generate a diff of this commit:
cvs rdiff -u -r1.103 -r1.104 src/tools/compat/configure.ac
cvs rdiff -u -r1.14 -r1.15 src/tools/compat/defs.mk.in
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/tools/compat/configure.ac
diff -u src/tools/compat/configure.ac:1.103 src/tools/compat/configure.ac:1.104
--- src/tools/compat/configure.ac:1.103 Tue May 30 18:39:19 2023
+++ src/tools/compat/configure.ac Tue May 30 18:54:21 2023
@@ -1,4 +1,4 @@
-# $NetBSD: configure.ac,v 1.103 2023/05/30 18:39:19 lukem Exp $
+# $NetBSD: configure.ac,v 1.104 2023/05/30 18:54:21 lukem Exp $
#
# Autoconf definition file for libnbcompat.
#
@@ -339,6 +339,7 @@ m4_pushdef([NB_WFLAG], m4_bpatsubst(NB_F
m4_pushdef([NB_VAR], [CC]m4_translit(NB_FLAG, [-a-z], [_A-Z]))
AX_CHECK_COMPILE_FLAG(NB_WFLAG, [AS_VAR_SET(NB_VAR,NB_FLAG)], [], [$cc_fail_unknown])
AC_SUBST(NB_VAR)
+m4_append([NB_CC_FLAG_VARS], NB_VAR, [ ])
m4_popdef([NB_FLAG])
m4_popdef([NB_WFLAG])
m4_popdef([NB_VAR])
@@ -347,13 +348,20 @@ m4_popdef([NB_VAR])
dnl Disable use of pre-compiled headers on Darwin.
NB_CC_FLAG([-no-cpp-precomp])
+dnl Detect HOST_CC support for <bsd.own.mk> CC_* warnings
+NB_CC_FLAG([-Wno-format-truncation])
+NB_CC_FLAG([-Wno-maybe-uninitialized])
+NB_CC_FLAG([-Wno-stringop-overflow])
+NB_CC_FLAG([-Wno-stringop-truncation])
AC_OUTPUT()
-# Display results
-#
+dnl Display results
+dnl
AC_MSG_NOTICE([========= Configuration results =========])
AC_MSG_NOTICE([CC $CC])
-AC_MSG_NOTICE([CC_NO_CPP_PRECOMP $CC_NO_CPP_PRECOMP])
+m4_foreach_w([NB_VAR], NB_CC_FLAG_VARS, [dnl
+AC_MSG_NOTICE(m4_format([%-32s],NB_VAR)[$NB_VAR])
+])
AC_MSG_NOTICE([LIBS $LIBS])
AC_MSG_NOTICE([=========================================])
Index: src/tools/compat/defs.mk.in
diff -u src/tools/compat/defs.mk.in:1.14 src/tools/compat/defs.mk.in:1.15
--- src/tools/compat/defs.mk.in:1.14 Tue May 30 18:39:19 2023
+++ src/tools/compat/defs.mk.in Tue May 30 18:54:21 2023
@@ -1,4 +1,4 @@
-# $NetBSD: defs.mk.in,v 1.14 2023/05/30 18:39:19 lukem Exp $
+# $NetBSD: defs.mk.in,v 1.15 2023/05/30 18:54:21 lukem Exp $
#
# Makefile fragment for building with libnbcompat and associated
# include files. It can also be used for building just with
@@ -73,6 +73,13 @@ BUILD_OSTYPE!= uname -s
HOST_CFLAGS+= @CC_NO_CPP_PRECOMP@
+# Override HOST_CC support for <bsd.own.mk> CC_* warnings
+#
+GCC_NO_FORMAT_TRUNCATION=@CC_WNO_FORMAT_TRUNCATION@
+GCC_NO_MAYBE_UNINITIALIZED=@CC_WNO_MAYBE_UNINITIALIZED@
+GCC_NO_STRINGOP_OVERFLOW=@CC_WNO_STRINGOP_OVERFLOW@
+GCC_NO_STRINGOP_TRUNCATION=@CC_WNO_STRINGOP_TRUNCATION@
+
HOST_CPPFLAGS+= ${COMPATINCFLAGS} -I${NETBSDSRCDIR}/tools/compat \
-DHAVE_NBTOOL_CONFIG_H=1 -D_FILE_OFFSET_BITS=64
