From 971a69db7dc02faaeed325c195f5db5da597cb58 Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Wed, 11 May 2016 14:47:59 +0200 Subject: Xen: don't warn about 2-byte wchar_t in efi The XEN UEFI code has become available on the ARM architecture recently, but now causes a link-time warning: ld: warning: drivers/xen/efi.o uses 2-byte wchar_t yet the output is to use 4-byte wchar_t; use of wchar_t values across objects may fail This seems harmless, because the efi code only uses 2-byte characters when interacting with EFI, so we don't pass on those strings to elsewhere in the system, and we just need to silence the warning. It is not clear to me whether we actually need to build the file with the -fshort-wchar flag, but if we do, then we should also pass --no-wchar-size-warning to the linker, to avoid the warning. Signed-off-by: Arnd Bergmann Reviewed-by: Stefano Stabellini Fixes: 37060935dc04 ("ARM64: XEN: Add a function to initialize Xen specific UEFI runtime services") diff --git a/drivers/xen/Makefile b/drivers/xen/Makefile index 9b7a35c..030e91b 100644 --- a/drivers/xen/Makefile +++ b/drivers/xen/Makefile @@ -8,6 +8,7 @@ nostackp := $(call cc-option, -fno-stack-protector) CFLAGS_features.o := $(nostackp) CFLAGS_efi.o += -fshort-wchar +LDFLAGS += $(call ld-option, --no-wchar-size-warning) dom0-$(CONFIG_PCI) += pci.o dom0-$(CONFIG_USB_SUPPORT) += dbgp.o -- cgit v0.10.2