x86/build: Fix build with older GCC versions

Older GCC (observed with 4.1.x) doesn't support -Wno-override-init and
also doesn't ignore unknown -Wno-* options.

Signed-off-by: Jan Beulich <[email protected]>
Cc: Linus Torvalds <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Cc: Valdis Kletnieks <[email protected]>
Cc: [email protected]
Fixes: 5e44258d16 "x86/build: Reduce the W=1 warnings noise when compiling x86 syscall tables"
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Ingo Molnar <[email protected]>

diff --git a/arch/x86/entry/Makefile b/arch/x86/entry/Makefile
index 77f28ce9c6464e71a942f767082391502c8fa80d..9976fcecd17edfca5d5dbfe94c2dad0a635edf2d 100644 (file)
--- a/arch/x86/entry/Makefile
+++ b/arch/x86/entry/Makefile
@@ -5,8 +5,8 @@
 OBJECT_FILES_NON_STANDARD_entry_$(BITS).o   := y
 OBJECT_FILES_NON_STANDARD_entry_64_compat.o := y
 
-CFLAGS_syscall_64.o            += -Wno-override-init
-CFLAGS_syscall_32.o            += -Wno-override-init
+CFLAGS_syscall_64.o            += $(call cc-option,-Wno-override-init,)
+CFLAGS_syscall_32.o            += $(call cc-option,-Wno-override-init,)
 obj-y                          := entry_$(BITS).o thunk_$(BITS).o syscall_$(BITS).o
 obj-y                          += common.o