X-Git-Url: https://git.whamcloud.com/?a=blobdiff_plain;f=config%2Flustre-build.m4;h=f196ef0945a8bc27a052446239086c8f0f68b680;hb=4cccb265c5c2148cc4d1089fa1bdaa8db606d57e;hp=7fec7bbba35283f199fd742346e132a86c58f1cf;hpb=ae5ca4d6de847a186de7ef0e1121d846a900d4c2;p=fs%2Flustre-release.git

diff --git a/config/lustre-build.m4 b/config/lustre-build.m4
index 7fec7bb..f196ef0 100644
--- a/config/lustre-build.m4
+++ b/config/lustre-build.m4
@@ -362,6 +362,50 @@ AC_DEFUN([LB_CC_NO_FORMAT_TRUNCATION], [
 ])
 
 #
+# Check if gcc supports -Wno-stringop-truncation
+#
+# To supress many warnings with gcc8
+#
+AC_DEFUN([LB_CC_NO_STRINGOP_TRUNCATION], [
+	AC_MSG_CHECKING([for -Wno-stringop-truncation support])
+
+	saved_flags="$CFLAGS"
+	CFLAGS="$CFLAGS -Wno-stringop-truncation"
+
+	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [])], [
+		EXTRA_KCFLAGS="$EXTRA_KCFLAGS -Wno-stringop-truncation"
+		AC_SUBST(EXTRA_KCFLAGS)
+		AC_MSG_RESULT([yes])
+	], [
+		AC_MSG_RESULT([no])
+	])
+
+	CFLAGS="$saved_flags"
+])
+
+#
+# Check if gcc supports -Wno-stringop-overflow
+#
+# To supress many warnings with gcc8
+#
+AC_DEFUN([LB_CC_NO_STRINGOP_OVERFLOW], [
+	AC_MSG_CHECKING([for -Wno-stringop-overflow support])
+
+	saved_flags="$CFLAGS"
+	CFLAGS="$CFLAGS -Wno-stringop-overflow"
+
+	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [])], [
+		EXTRA_KCFLAGS="$EXTRA_KCFLAGS -Wno-stringop-overflow"
+		AC_SUBST(EXTRA_KCFLAGS)
+		AC_MSG_RESULT([yes])
+	], [
+		AC_MSG_RESULT([no])
+	])
+
+	CFLAGS="$saved_flags"
+])
+
+#
 # LB_CONDITIONALS
 #
 # AM_CONDITIONAL instances for everything
@@ -376,20 +420,10 @@ AM_CONDITIONAL([DOC], [test x$ENABLE_DOC = x1])
 AM_CONDITIONAL([MANPAGES], [test x$enable_manpages = xyes])
 AM_CONDITIONAL([LINUX], [test x$lb_target_os = xlinux])
 AM_CONDITIONAL([USE_QUILT], [test x$use_quilt = xyes])
-AM_CONDITIONAL([RHEL], [test x$RHEL_KERNEL = xyes])
-AM_CONDITIONAL([SUSE], [test x$SUSE_KERNEL = xyes])
+AM_CONDITIONAL([RHEL], [test -f /etc/redhat-release])
+AM_CONDITIONAL([SUSE], [test -f /etc/SUSE-brand -o -f /etc/SuSE-release])
 AM_CONDITIONAL([UBUNTU], [test x$UBUNTU_KERNEL = xyes])
 
-# Sanity check for PCLMULQDQ instruction availability
-# PCLMULQDQ instruction is a new instruction available beginning with
-# the all new Core processor family based on the 32nm microarchitecture
-# codename Westmere. So, $target_cpu = x86_64 should have this instruction
-# except MIC microarchitecture (k1om).
-AM_CONDITIONAL(HAVE_PCLMULQDQ, test x$target_cpu = "xx86_64" -a x$target_vendor != "xk1om")
-AS_IF([test x$target_cpu = "xx86_64" -a x$target_vendor != "xk1om"],
-	[AC_DEFINE(HAVE_PCLMULQDQ, 1, [have PCLMULQDQ instruction])])
-
-LIBCFS_CONDITIONALS
 LN_CONDITIONALS
 LC_CONDITIONALS
 ]) # LB_CONDITIONALS
@@ -583,6 +617,8 @@ LB_PATH_DEFAULTS
 
 LB_PROG_CC
 LB_CC_NO_FORMAT_TRUNCATION
+LB_CC_NO_STRINGOP_TRUNCATION
+LB_CC_NO_STRINGOP_OVERFLOW
 
 LC_OSD_ADDON
 
@@ -597,7 +633,6 @@ LB_CONFIG_SERVERS
 # Tests depends from utils (multiop from liblustreapi)
 AS_IF([test "x$enable_utils" = xno], [enable_tests="no"])
 
-m4_ifdef([LC_NODEMAP_PROC_DEBUG], [LC_NODEMAP_PROC_DEBUG])
 LIBCFS_CONFIG_CDEBUG
 LC_QUOTA