Added a patch to help fix the build with GCC 8+

kernel.spec

@@ -181,6 +181,9 @@ Patch101:	perf-xmlto-skip-validation.patch
 # http://bugs.rosalinux.ru/show_bug.cgi?id=6459
 Patch102:	audit-make-it-less-verbose.patch
 
+# May help when building with GCC 8+.
+Patch105:	perf-silence-format-warnings-gcc8.patch
+
 # Increase vmalloc area, https://bugs.mageia.org/show_bug.cgi?id=904
 Patch106:	x86-increase-default-minimum-vmalloc-area-by-64MB-to-192MB.patch
 

perf-silence-format-warnings-gcc8.patch

@@ -0,0 +1,19 @@
+perf: Silence two kinds of format warnings from GCC 8
+
+perf may be fixed properly in the newer kernel versions but for now, it is
+easier to just silence -Werror=format-overflow and -Werror=format-truncation.
+---
+
+diff --git a/tools/perf/Makefile.config b/tools/perf/Makefile.config
+index 3ec1969b6d3e..3d924b43db4f 100644
+--- a/tools/perf/Makefile.config
++++ b/tools/perf/Makefile.config
+@@ -203,6 +203,7 @@ CFLAGS += -funwind-tables
+ CFLAGS += -Wall
+ CFLAGS += -Wextra
+ CFLAGS += -std=gnu99
++CFLAGS += -Wno-format-truncation -Wno-format-overflow
+ 
+ CXXFLAGS += -std=gnu++11 -fno-exceptions -fno-rtti
+ CXXFLAGS += -Wall
+--