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boot/at91bootstrap: disable PIE and stack-protector build flags

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The toolchain wrapper automatically adds Position Independent
Execution and stack protector flags in the build process when selected
in the configuration. at91bootstrap being freestanding code, it
doesn't support these, so we have to disable them.

Signed-off-by: Kory Maincent <kory.maincent@bootlin.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
(cherry picked from commit 1351222486)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
This commit is contained in:
Kory Maincent 2022-10-04 14:52:41 +02:00 committed by Peter Korsgaard
parent e785e38dcc
commit 67c5936f42
1 changed files with 7 additions and 1 deletions
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8
boot/at91bootstrap/at91bootstrap.mk
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@ -32,8 +32,14 @@ endef
AT91BOOTSTRAP_POST_PATCH_HOOKS += AT91BOOTSTRAP_APPLY_CUSTOM_PATCHES
endif
# The at91bootstrap Makefile doesn't support customizing
# CFLAGS/LDFLAGS, so we cheat and pass our custom flags through CC and
# LD.
define AT91BOOTSTRAP_BUILD_CMDS
$(MAKE1) CROSS_COMPILE=$(TARGET_CROSS) -C $(@D)/$(AT91BOOTSTRAP_MAKE_SUBDIR)
$(MAKE1) CROSS_COMPILE=$(TARGET_CROSS) \
CC="$(TARGET_CC) -fno-stack-protector" \
LD="$(TARGET_CC) -fno-PIE" \
-C $(@D)/$(AT91BOOTSTRAP_MAKE_SUBDIR)
endef
define AT91BOOTSTRAP_INSTALL_IMAGES_CMDS