[PATCH 1/1] always override stack-protector variables in EFI build

[Quirin Gylstorff]

From: Felix Moessbauer <felix.mo...@siemens.com>

These flags require libc support which we do not have in the EFI part.
As distro builders inject the hardening flags into CFLAGS, which is fine
for the userspace part, but for EFI we need to override it.

Signed-off-by: Felix Moessbauer <felix.mo...@siemens.com>
---
Makefile.am | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/Makefile.am b/Makefile.am
index 3b05e7c..831ed68 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -217,13 +217,18 @@ efi_cflags = \
-fshort-wchar \
-ffreestanding \
-fno-strict-aliasing \
- -fno-stack-protector \
-Wsign-compare \
-DGNU_EFI_USE_MS_ABI \
-Werror \
$(CFLAGS_MGENERAL_REGS_ONLY) \
$(CFLAGS)

+# the stack protectors needs libc support which we don't have in the EFI part
+# distro builders inject the hardening variables into CFLAGS, which is fine
+# for the userspace part, but for EFI we need to override it.
+efi_cflags += \
+ -fno-stack-protector
+
if ARCH_X86_64
efi_cflags += \
-mno-red-zone
--
2.39.2

[Jan Kiszka]

Can we do that a bit shorter as well? Eg.

# Override any stack protector enabling from CFLAGS -
# not supported in GNU EFI environment.

Jan

> if ARCH_X86_64
> efi_cflags += \
> -mno-red-zone

--

Siemens AG, Technology
Linux Expert Center

[MOESSBAUER, Felix]

On Mon, 2023-11-13 at 16:58 +0100, 'Jan Kiszka' via EFI Boot Guard

Feel free to fix that during merging. I would send a v2, but
temporarily don't have access to a SMTP server...

Felix

[JEMS EBERHARD HORBEL]

DIRECT SENDER IS HERE LETS DEAL.

JENS EBERHARD



MT103/202 DIRECT WIRE TRANSFER
PAYPAL TRANSFER
CASHAPP TRANSFER
ZELLE TRANSFER
TRANSFER WISE
WESTERN UNION TRANSFER
BITCOIN FLASHING 
BANK ACCOUNT LOADING/FLASHING
IBAN TO IBAN TRANSFER
MONEYGRAM TRANSFER
SLBC PROVIDER
CREDIT CARD TOP UP
SEPA TRANSFER
WIRE TRANSFER
GLOBALPAY INC US

Thanks.


NOTE; ONLY SERIOUS / RELIABLE RECEIVERS CAN CONTACT.

DM ME ON WHATSAPP FOR A SERIOUS DEAL.

+447405129573