Messages in this thread Patch in this message | | | From | Arnd Bergmann <> | Subject | [PATCH] Xen: don't warn about 2-byte wchar_t in efi | Date | Wed, 11 May 2016 14:47:59 +0200 |
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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 <arnd@arndb.de> Fixes: 37060935dc04 ("ARM64: XEN: Add a function to initialize Xen specific UEFI runtime services") --- drivers/xen/Makefile | 1 + 1 file changed, 1 insertion(+)
diff --git a/drivers/xen/Makefile b/drivers/xen/Makefile index 415f2869054b..8feab810aed9 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_ARM64) += arm-device.o dom0-$(CONFIG_PCI) += pci.o -- 2.7.0
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